MiniPurge Type Z(Y) CF
Manual
ML432
This manual covers Mini-Z(Y)-Purge Continuous Flow
Size:
1&2
Mounting Options: bp, pm, nm, ss
Output Options:
IS, PO
CONTENTS:
1. Specification Sheet – MiniPurge Type Z(Y) Systems
2. Application Suitability
3. Installation, Operation and Maintenance for CF Systems
Section 0. Description and Principle of Operation
Section 1. Installation of the System
Section 2. Operation of the System
Section 3. Maintenance of the System
Section 4. Fault Finding - CF Systems
Section 5. Annex of Options Fitted
4. Drawings
5. Certificates
ML432 v14
25-Nov-14
1. Specification Sheet – MiniPurge Type Z(Y) Systems
Model No. (Example):
07 1 ZCF / ss / IS
Purge System Type
(Note: Not all codes are applicable)
Alarm (Signals)
07 = MiniPurge
IS =
Internal Switch
“Alarm” : Dry, VFC,SPSTN/O Contact
NI – Ex nA Non-Incendive Circuits
Vmax < 254 Vac rms
Imax < 1 A
Pmax = 70 W
IS – Ex i circuits
Umax = 30 Vdc
Imax = 350 mA
Li = 0
Ci = 0
Hermetically Sealed Switch
Ex m IIC T4 Gc
Vmax = 254 Vac rms
Imax 0.7 A
PO =
Pneumatic Output
“Alarm” : Loss of Pressure = No signal
”Pressurized” = at supply pressure
Size
1 = Sub MiniPurge
Purge flow rate: 4 - 8 scfm / 10 - 225 Nl / min
2 = MiniPurge
Purge flow rate: 8 - 16 scfm / 255 - 450 Nl /min
Approval / Certification
Z=
Y=
Europe
EN 60079-0, EN 60079-2,
EN 61241-4
Sira 01ATEX1295X
II 3 (2) G D
0518
Ex [pz Gc] IIC T6 Gb
Ex [p Dc] IIIC T85ºC Db
Tamb -20ºC +55ºC
0518
II 2 (2) G D
Ex [py] IIC T6 Gb
Ex [p] IIIC T85ºC Db
Tamb -20ºC +55ºC
IEC
IEC 60079-0, IEC 60079-2,
IEC 61241-4
IECEx SIR 07.0027X
Ex [pz Gc] IIC T6 Gb
Ex [p Dc] IIIC T85ºC Db
Tamb -20ºC +55ºC
Ex [py] IIC T6 Gb
Ex [p] IIIC T85ºC Db
Tamb -20ºC +55ºC
USA / Canada NFPA 496
FM 1X8A4AE
Class I Div 2
Groups A, B, C & D
bp =
Back Plate (Top/Side Mount) 316L
Stainless Steel (NROB finish)
pm =
Panel Mount (Side/Front Mount) 316L
Stainless Steel (NROB finish)
nm =
Non Metallic (Top/Side Mount)
Polystyrene c/w clear cover
ss =
316L Stainless Steel (NROB finish)
Neoprene “Top” Mount Gasket, loose
Class I Div 1
Groups A, B, C & D
UL E190061
Class I Div 2
Groups A, B, C & D
Class I Div 1
Groups A, B, C & D
Brazil
INMETRO - TÜV 12.1462X
Ex [pz Gc] IIC T6 Gb
Ex [p Dc] IIIC T85ºC Db
Tamb -20ºC +55ºC
Supply Pressure
MiniPurge Housing
Purging Method
CF = Continuous Flow
Ex [py] IIC T6 Gb
Ex [p] IIIC T85ºC Db
Tamb -20ºC +55ºC
60 psi / 0.4MPa / 4 bar must be regulated at inlet.
Maximum supply pressure 115 psi / 0.8MPa / 8 bar.
Compressed Air / Nitrogen
Flow & Pressure Sensor
One sensor for both “Low Pressure and Flow” :
1 "WC / 250 Pa ( 2.5 mbarg )
Spark Arrestor Unit:
Model No
Purge / Dilution Flow Rate
Material
MiniPurge Size 1
SAU25
0.4 to 8 scfm / 10 to 225 Nl/min
8 User selectable orifice plates
Stainless Steel
MiniPurge Size 2
SAU40
8 to 16 scfm / 255 to 450 Nl/min
4 User selectable orifice plates
Stainless Steel
Model No
RLV25/ss
RLV36/ss
Relief Valve
Opening Pressure
4” WC / 1 kPa (10 mbar)
Material :
316L Stainless Steel,
Spark Arrestor: Stainless Steel mesh,
Gasket:
Neoprene
Action on “Loss of Pressure”:
ML432 v14
4” WC / 1 kPa (10 mbarg)
ALARM ONLY
25-Nov-14
2. Application Suitability
MiniPurge Systems are certified for use in Hazardous Areas, where the Hazardous Area is
non-mining (i.e. above ground) and the hazard is caused by flammable gasses, vapours or dust.
Mini-Z-Purge Systems may be used in IECEx, ATEX Zone 2(22) - Category 3 and NEC 500
Class I, Div 2.
Mini-Y-Purge Systems may be used in IECEx, ATEX Zone 1(21) - Category 2 and NEC 500
Class I, Div 1.
MiniPurge systems may be used for hazards of any gas group. However, apparatus
associated with the MiniPurge system, such as Non-Incendive, Intrinsically Safe signalling
circuits and flameproof enclosures containing switching devices may be limited in their gas
group. The certification documentation supplied with any such devices must be checked to
ensure their suitability.
This system is designed for use primarily with compressed air. Where other inert compressed
gasses are used (Nitrogen, for example) the user must take suitable precautions so that the
build up of the inert gas does not present a hazard to health. Consult the Control of Substances
Hazardous to Health (COSHH) data sheet for the gas used. Where a risk of asphyxiation
exists, a warning label must be fitted to the Pressurized Enclosure.
The following materials are used in the construction of MiniPurge systems. If substances that
will adversely affect any of these materials are present in the surrounding environment, please
consult Expo for further guidance.
Materials of construction:
 Stainless Steel
 Mild (carbon) Steel
 Brass



Aluminium
Nylon
Polyurethane



Acrylic
Silicone Rubber
Neoprene
3. Installation, Operation and Maintenance for CF Systems
This MiniPurge is designed for use under normal industrial conditions of ambient temperature,
humidity and vibration. Please consult Expo before installing this equipment in conditions that
may cause stresses beyond normal industrial conditions.
The MiniPurge system shall be installed and operated in accordance with relevant standards,
such as IEC / EN 60079-14, NEC 500, NFPA 496 and any local codes of practice that are in
force.
For IEC / ATEX applications, references to the NFPA 496 within the ML383, should be replaced
by the equivalent clause in IEC / EN 60079-2.
For IEC / ATEX applications, the "Example calculations:" in section 1.1.4 within ML383 should
read:
If the PE external dimensions indicate a volume of 500 Litres then,
500 litres enclosure volume x 5 volume changes = 12 minutes purge time
225 litres/minute purge flow rate
ML432 v14
25-Nov-14
Installation, Operation and Maintenance Manual for
MiniPurge Continuous Flow (Model CF)
conforming to NFPA 496
IMPORTANT NOTE It is essential, to ensure conformity with the standard,
that the user of the system observes the following instructions:
Please refer to the latest standard for detailed requirements and definitions.
(N.B. These instructions apply only to the Pressurizing system. It is the responsibility of the manufacturer of the
Pressurized Enclosure to provide equivalent instructions for the Enclosure.)
Contents:
Section 0
Section 1
Section 2
Section 3
Section 4
Section 5
Description and Principle of Operation
Installation of the System
Operation of the System
Maintenance of the System
Fault Finding
Annex (if applicable)
Section 0
Description and Principle of Operation

All MiniPurge pressurization systems provide:
a) a method of pressurizing a Pressurized Enclosure (PE)
while at the same time compensating for any leakage,
together with
b) a method of purging the enclosure, before power is
turned on, to remove any flammable gas that may have
entered the enclosure while it was not pressurized.
Continuous Flow Systems, Model CF, allow air to flow
through the PE continuously by having a fixed outlet
aperture, which does not have any means of closure. The
act of pressurizing the enclosure forces air to “leak”
through the outlet aperture. The Control Unit admits
sufficient air at the inlet to the PE to compensate for the
air leaking out of the outlet aperture as well as from any
other accidental leakage paths. The flow rate is constant
both during purging and thereafter.
The Purging Flow rate is monitored by a separate “Purge
Flow Sensor” located in the CU, which detects the
differential pressure across the purge flow orifice located
directly before the Outlet Orifice. The Purge Flow Sensor
is set to operate when the desired differential pressure is
exceeded. The output from the Flow Sensor is indicated
on the CU and on “X” Pressurization systems, used to
operate the automatic purge timer. Both Enclosure
Pressure and Purge Flow have to be correct before the
Purge Timer can start.
Type CF systems comprises the following major parts:
- A Control Unit (CU) containing as a minimum, for “Y”
and “Z” Pressurization, a Flow Control Valve (FCV),
Minimum Pressure and Purge Flow sensing devices, and
a “Pressurized”/”Alarm” indicator. The CU supplies a
“Pressurized” signal showing whether the PE pressure is
satisfactory or not.
For Type “X” Pressurization, the CU has, in addition, a
fully automatic Purging controller with a purge timer and
electrical power switch interlock.
Expo Technologies Limited
Page 1 of 6
- A Relief Valve (RLV) fitted to the PE to provide a
means of limiting the maximum pressure
experienced by the enclosure during operation.
The RLV model number has suffixes giving the
diameter of the valve aperture (in millimeters) and
material, e.g. RLV **/cs (Carbon Steel) or /ss
(Stainless Steel). All RLVs incorporate a Spark
Arrestor to prevent sparks being ejected from the PE
through the RLV aperture. The Relief Valve is fitted
solely as a safety device and does not open in
normal operation.
- An Outlet Orifice, which has been pre-calibrated
so that the pressure drop at the desired flow rate is
known. The Minimum Pressure Sensor within the
CU will be set to the same figure as the pressure
drop. When the PE pressure exceeds the calibrated
pressure the Continuous Flow must be taking place.
The system is provided with one of the following
types of calibrated Outlet Orifices. Please consult
the system specification sheet to determine which
has been supplied. The choice:
- Type SAU** where the Outlet Orifice disk is
removable and can be easily changed by the user to
give different flow rates according to the size of the
PE and the available air supply capacity. (** denotes
the metric thread size of the SAU body)
- SA** where the orifice size is fixed and the way to
change the flow rate is either to change the setting
of the Minimum Pressure Sensor or to replace the
SA with one of another size. (** denotes the nominal
thread size of the SA body)
- For low flow rates, the Outlet Orifice may be
incorporated within the Relief Valve making use of
the existing Spark Arrestor. The Relief Valve will
then have a suffix /CF**, where ** is the orifice size
in millimeters.
ML383 issue 03 – 09.01.13
Section 1
Installation of the System
The installation of the MiniPurge system, the
protective gas supply, any alarm device should be in
accordance with the requirements of NFPA 496.
The electrical installation associated with the
MiniPurge system shall conform to the local codes
and the relevant clauses of NFPA 496.
1.1
Installation of the Expo CF System
1.1.1 The Expo system should be installed either
directly on or as close as possible to the Pressurized
Enclosure (PE). It should be installed so that the system
indicators may be readily observed.
1.1.2 All parts of any system carry a common serial
number. If installing more than one system, ensure that
this commonality is maintained on each installation.
1.1.3 Any tubing, conduit and fittings used to connect
to the PE should be metallic, or, if non-metallic, conform
to the local codes for flammability ratings. No valve may
be fitted in any tube connecting the Expo system to the
PE.
1.1.4 The user or manufacturer of the PE shall
determine the volume of the PE, the necessary purging
volume, and the time to be allowed for purging, using the
chosen Expo system purging flow rate. It is the user’s
responsibility to verify or enter this data on the PE and/or
Expo system nameplate. Ask Expo if in doubt.
Example calculations:
a) If the PE external dimensions give a volume of 20
cubic feet, and it is NOT a motor, multiply the volume by
four to get the Purging Volume i.e. 80 cubic feet. Divide
the Purging Volume by the purge rate e.g. 32 cubic feet
per minute, and round up to the next even minute above,
i.e. purging time would be 4 minutes.
b) If the PE is a motor, multiply the internal free volume
by ten to get the Purging Volume. For the above
example, the Purging time would be 8 minutes.
1.1.5 If the PE contains an internal source of release of
flammable gas or vapor, the procedures for assessment
of the release as given in NFPA 496 shall be observed.
The user must verify that the specification of the Expo
system e.g. pressures, continuous flow (dilution) rate and
type of protective gas are correct for the specific
application.
1.1.6 More than one PE can be protected by a single
system. If PEs are connected and purged in “series” e.g.
“Daisy Chained”, the Outlet Orifice must be fitted on the
last enclosure with the Purge Inlet to the first enclosure.
The Relief Valve may be fitted at any convenient location
except when it has the option code /CF in which case it
must be fitted on the last enclosure. The bore and length
of the tube or conduit used to interconnect the enclosures
is critical and will determine the maximum pressure
experienced by the first enclosure in the series. Advice
on sizing can be obtained from your Expo Technologies,
sales office. The test pressure for all the enclosures
Expo Technologies Limited
Page 2 of 6
should be 3 times the pressure inside the first
enclosure when purging is taking place.
If PE’s are to be connected in parallel each
enclosure must have its own Outlet Orifice/Spark
Arrestor, Relief Valve, Purge Flow Sensor and
Pressure Sensor. System “Models” can be mixed
e.g. Model LC for one enclosure and Model CF for
another. An example would be a Gas
Chromatograph instrument. Expo systems with this
facility have option code /TW.
1.2
Quality
and
Installation
Pressurizing Air or Inert Gas Supply
of
the
1.2.1 The source of the compressed air must be
in a non-classified area. Inert gas may be used as
an alternative to compressed air.
1.2.2 Unless a supply shut-off valve has been
specially fitted within the Expo system, a valve with
the same, or larger, thread size as the Control Unit
(CU) inlet fitting shall be fitted externally. In addition,
for "Y" and "Z" Pressurization systems, a suitable
nameplate shall be provided.
1.2.3 The tubing and fittings used must conform to
1.1.3 above.
1.3
Provision
Devices
and
Installation
of
Alarm
Expo Technologies systems have a Minimum
Pressure Sensor set to a pressure of at least 0.1”
WC (0.25 mbar). When the PE pressure is above
this set point the Sensor produces a positive
"Pressurized" signal. This is displayed on the
Red/Green indicator. This signal can be used to
operate an electrical contact for a remote “Alarm”.
The pneumatic signal may be supplied either
a) to a pressure operated switch (MiniPurge  Option
Code /IS) suitable for an Intrinsically Safe circuit, in
accordance with Expo drawing EP80-2-11 (or for a
Non-Incendive circuit in Division 2), or
b) to a bulkhead fitting where it is available to the
user (MiniPurge Option Code /PO). It can then be
used to operate an external electrical switch either
local e.g. explosionproof, or remote in a nonclassified area.
When the enclosure pressure falls below the set
point of the Sensor, the "Pressurized" signal is
removed, i.e. the absence of the signal indicates an
“Alarm” ("Pressure Failure") condition. If the system
“Alarm” indicator is not located in a place where it
can be readily observed, the user must make use of
this external alarm facility in accordance with NFPA
496 requirements.
Example: The "Pressurized" signal can be used to
produce an "Alarm" action by means of a
conventional "pressure switch" set to operate at
around 15 psi (1 bar). The "Pressurized" signal from
the CU at 30 psi (2 bar) or more will hold the switch
in the operated position until the CU detects a low
pressure in the PE and removes the "Pressurized"
ML383 issue 03 – 09.01.13
signal. The Alarm switch will reset and its contacts can be
used to operate a remote electrical alarm.
1.4.4 No valves are permitted between the Power
Switch and the Expo system.
If the switch is located in the hazardous area it must
either be part of an Intrinsically Safe circuit, or be suitably
protected e.g. explosionproof. The pressure switch
should be IS or explosionproof even if it is fitted within the
PE.
1.4.5 For "X" Pressurization, the PE door shall
have fasteners that can be opened only by the
use of a tool or key. Otherwise the additional
requirements from NFPA 496 should apply.
Expo Technologies Tip: Exception: For a “Z Purge”
system fitted in a Division 2 area a non-classified
switch inside the PE can be used to operate a remote
Alarm provided its electrical supply comes from
within the PE (i.e. NOT PROVIDING DRY CONTACTS).
When the PE is in use the Alarm can operate
normally in response to the pneumatic signal from
the CU with option /PO. When the PE is switched off
there is no need for an alarm! Ask Expo for the circuit
diagram.
The Alarm switch can also be located in a nearby
non-classified location. To get the best response
time the switch should be as close as possible to the
CU and the maximum length of tubing between the
CU and the Alarm switch should not exceed 150 feet
(45 m) unless “Quick Exhaust Valves” are used
(please ask Expo if in doubt.)
Note: No valves may be fitted between the Expo system
and the alarm switch.
Note: The door switch provided with the Expo
system (when requested) can be either pneumatic or
electric.
1.5
Marking
1.5.1 The MiniPurge system carries a nameplate
and a specification sheet, which give specific data
such as serial and models numbers, Pressure
Sensor settings, flow rates and purge time.
1.5.2 Other marking, for the PE, required by the
standard includes:
“WARNING - PRESSURIZED ENCLOSURE This enclosure shall not be opened unless the
area is known to be free of flammable materials
or unless all devices within have been deenergized"
"Power shall not be restored after the enclosure
has been opened until the enclosure has been
purged for___minutes at a flow rate of___."
1.4.1 All power entering the PE shall be provided with a
means of isolation. This requirement also applies to any
external power sources that are connected to "dry
contacts" or "volt-free contacts" within the PE.
Expo note: It is understood that NFPA 496 requires
the de-energization of all devices that are not
suitable for the hazard e.g. devices that are not
Explosionproof or Intrinsically Safe. For example, an
explosionproof anti-condensation heater would not
have to be de-energized.
Exception: Power to Intrinsically Safe, or other apparatus,
which is already suitable for the location need not be
isolated by the Expo Technologies system.
1.5.3 If Inert Gas is used as the Protective Gas and
a risk of asphyxiation exists, a suitable warning plate
should be fitted to the PE.
1.4
Power Supplies and their Isolation
Expo Technologies Tip: It is recommended to fit dry or
volt-free contacts in the non-classified area or inside
an explosionproof box rather than inside the PE.
Please ask Expo about “MiniPurge Interface Units”
(MIU).
In the case of "X" Pressurization, the isolation of the
power must be controlled by the Expo system using the
"Purge Complete" pneumatic signal to operate a "Power
Switch" in a similar manner to that described in 1.3
above.
In the case of "Y" or "Z" Pressurization the power may be
controlled manually by the operator using a local isolating
switch.
1.4.2 In accordance with NFPA496 ; Expo Mini-X-Purge
systems can have the "Action on Pressure Failure"
(normally "Alarm and Trip") adjusted by the user to
"Alarm Only". In case of an alarm, it is the responsibility
of the user to de-energize the protected equipment as
soon as possible. The system may require the addition of
an “Alarm Only Kit” (/AO) to perform this function. Please
contact Expo Sales office for further details.
1.4.3 The Power (cut-off) Switch must be approved for
the location or located in a non-classified area.
Expo Technologies Limited
Page 3 of 6
Section 2
Operation of the System
2.1 Check that the system has been installed in
accordance with Section 1 of this manual.
2.2 Disconnect the supply pipe from the inlet to the
Control Unit (CU) and blow clean air through for at
least 5 seconds per foot of length (15 sec/metre) to
remove any debris, oil and condensation.
2.3 Connect a temporary pressure gauge or liquid
manometer to the PE or CU “Pressure Test Point”
(on the Low Pressure Sensor, by the removal of the
Red plug - 4mm OD nylon tube).
2.4 Open the supply shutoff valve. On "X" Purge
systems check that the internal gauge reads 30 psi
(2 bar). If not, adjust the logic pressure regulator to
suit (lift the red ring to unlock the knob first.)
2.5 Adjust the Flow Control Valve (FCV) so that the
enclosure pressure rises to the point where the
"Pressurized" indicator turns Green.
2.6 Continue to raise the PE pressure until the Relief
Valve (RLV) opens. Verify that the RLV opens at or
below the figure specified in the documentation.
Repeat the test several times.
ML383 issue 03 – 09.01.13
2.7 Lower the PE pressure until the "Pressurized"
indicator turns Red. Verify that the indicator turns Red at
or above the pressure specified in the documentation.
Check the external alarm contacts (if fitted).
Note: On Expo CF systems the Minimum Pressure
Sensor set point may be significantly above the minimum
of 0.1"WC (0.25 mbar) since it doubles as both the
Pressure and the Purge Flow Sensor Set points of 1"WC
(2.5 mbar) are common. Please check the documentation
for the actual setting.
2.8 Open the FCV again and set the PE pressure to a
level somewhere between the Minimum Pressure Sensor
set point and the RLV opening pressures. This "working"
pressure is not critical. Enough pressure to keep the
“Pressurized” indicator Green is sufficient.
2.9 On "X" CF Purge systems the purge timer will start as
soon as the “Pressurized” indicator turns Green. Check
that the time delay between the indicator turning Green
and the application of power to the PE is not less than
the minimum time required to purge the PE. Times in
excess of the minimum are permitted and a tolerance of
+25% is normally acceptable. If the time is shorter than
the minimum permitted, it must be adjusted accordingly.
MiniPurge uses a pneumatic incremental timer which is
adjusted by fully opening or closing one or more of five
screwdriver-operated valves, arranged in a block on the
control logic manifold – see GA Drawing. The opening of
each valve incrementally provides a fixed number of
minutes of purging time as in the following table
Valve:
1
2
3
4
5
Minutes:
2
4
8
8
16
Section 3
Maintenance of the System
The maintenance recommended for the system
consists of the following, supplemented by any
additional local requirements imposed by the
authority having jurisdiction.
3.1
Initial Maintenance
Expo recommends that the commissioning test be
repeated at least every six months. They include
checking the opening pressure of the Relief Valve,
setting of the Minimum Pressure Sensor, the
"Normal Working Pressure" of the enclosure and, for
"X" Purge systems, the setting of the purge timer (as
described in Section 2 of this manual).
In addition, the following
recommended at that time:
checks
are
also
- Check the RLV and any other Spark Arrestors.
Remove any debris or corrosion, or replace the
Spark Arrestor with a spare.
- Check the condition of the air supply filter element.
Clean or replace it as necessary.
3.2
Routine Maintenance
At least every two years, the following additional
checks are recommended:
Thus for a 12 minute purge time, valves 2 and 3 would be
open and the others closed. For twenty-four minutes, 4
and 5 would be open and the others closed. At least one
valve must always be open and the screws must be at
the appropriate limit of travel.
2.10 On “Y” and “Z” Purge systems the purge timing and
power control is performed manually by the user.
Never turn on the power without purging first, unless
you have proved that the interior of the PE is gas free
and checked that the “Pressurized” indicator is
green!
2.11 On "X" CF Purge systems, once the purge time is
completed the “Purge Complete” indicator turns Green.
With both indicators Green, the power will be turned on
by the CU. Using the FCV reduce the PE pressure to the
point where both indicators turn Red and check that the
power is automatically turned off. When the PE pressure
is restored the system should re-purge the PE before
power is once again turned on.
2.12 After initial commissioning, the system is ready for
normal operation:
a) “X” CF Purge systems: Turn the air supply valve On or
Off to start or stop the system. After this, the Pressurizing
and Purging sequence is entirely automatic.
b) “Y” and “Z” Purge systems are started and stopped in
the same way as “X” Purge system but the user must
Expo Technologies Limited
close the Power Switch only after the enclosure has
been pressurized and purged sufficiently to ensure
that the interior of the enclosure is gas free. The
power should be shut off as soon as possible after a
pressure failure. This is also the user’s
responsibility.
Page 4 of 6
- Apparatus is suitable for the Hazardous Location
- There are no unauthorised modifications
- The source of air is uncontaminated
- The interlocks and alarms function correctly
- Approval labels are legible and undamaged
- Adequate spares are carried
- The action on pressure failure is correct
Section 4
4.1
Fault Finding for CF Systems
General
If the system does not behave in the manner
described above there is a fault. Some of the more
likely faults are dealt with below. If a cure cannot be
effected by following the procedure shown below,
please call Expo (24 hour answering) or your
supplier for further assistance.
The system has been designed for ease of fault
finding and many of the components fitted are plugin or sub-base mounted. Check components by
substitution only after establishing that such action is
necessary. If the system is less than 12 months old,
parts under warranty should be returned to Expo
Technologies for investigation, with a full report of
the fault and the system serial number.
ML383 issue 03 – 09.01.13
As with any pneumatic system the greatest enemies are
water, oil and debris in the air supply. For this reason a
dust and water filter may be fitted. But debris can enter
from other sources and it is vital therefore that the
procedures described in Section 2 are carried out before
using the system for the first time, or following any
disconnection of the pipework. Failure to perform this
work may cause damage which will not be covered under
warranty.
Fault Finding
NOTE: Before making the following checks verify that the
main supply pressure is between 60 and 115 psi (4-8 bar)
at the Control Unit (CU) and, for “X” Purge systems, the
regulated pressure on the logic gauge is 30 psi (2 bar)
4.3
Relief Valve Opens (Continuously or
Intermittently)
Possible Cause 1: The PE pressure is too high. The
Flow Control Valve (FCV) is too far open. Adjust the
FCV as described in Section 2 above.
Possible Cause 2: Debris on the RLV disk allowing
air to leak from the valve. Remove the RLV cover
and clean the valve disk. The disk and spring may
be removed from the RLV without affect the
calibration.
4.4
System Fails to Switch Power On after
the Purge Time has Elapsed? (“X” Purge
Systems Only)
4.2
Minimum Pressure Alarm is ON Continuously
(“Pressurized” Indicator is Red)
Possible cause 1: Is power available? Is the power
disconnect closed? Are the fuses or circuit breaker
OK?
Possible cause 1: The PE pressure is too low. Try
increasing the setting of the Flow Control Valve (FCV) to
raise the pressure in the PE.
Possible cause 2: System fault? Timer not timed
out?
Possible cause 2: Enclosure fault?
- Is the ACTUAL PE pressure below the setting of the
Minimum Pressure Sensor? Check it with a manometer
or gauge.
- Is the Outlet Orifice (if separate from the RLV) fitted
correctly?
- Is debris stuck on the face of the Relief Valve disk,
holding the valve open?
- Has the PE door been closed and all conduit/cable
glands sealed?
Possible cause 3: Insufficient purging Flow due to
inadequate air supply pressure. Check the air supply
pressure at the inlet to the CU when flow is taking place.
Excessive pressure drop in the supply pipe is a very
common cause of this problem. The supply pipe must be
at least as big as the CU inlet fitting, i.e. at least ½” NB.
Possible cause 4: Excessive PE leakage. Check around
the PE when flow is taking place. Any significant leakage
must be cured. Has a Leakage Test been done? The
total leakage should not exceed 10% of the Continuous
Flow rate.
Possible cause 5: PE not strong enough. Repeat the PE
pressure test. FM recommend that the PE is tested to
three times the Relief Valve opening pressure e.g.
12”WC (30 mbar) for standard systems. Has this test
been done?
Possible cause 6: System fault?
Has the pressure sensing tube been damaged?
If checks above reveal that the PE is correct the fault
probably lies in the CU. The basic operation of the
Minimum Pressure Sensor can be checked by
unscrewing the 2.4” diameter diaphragm and, by using a
finger, blocking the threaded hole in the top of the valve
module. The valve should operate and the indicator
should turn Green. If this works correctly and the
enclosure pressure is above the setting of the Minimum
Pressure Sensor it is likely that the Pressure Sensor
diaphragm needs re-calibrating or replacing (See 4.5).
Expo Technologies Limited
Page 5 of 6
a) Has the “Pressurized” indicator been Green for
the whole of the purge time?
b) Is the logic pressure gauge at 30 psi (-0, +10%)
c) Is there pressure at the Power Switch output
bulkhead and at the Power Switch itself? Is the
Switch set at 15 psi?
d) Is the pipe to the Power Switch airtight? The
signal to the Power Switch bulkhead has a restrictor
that limits the permissible leakage from the pipe.
e) Note the timer setting and reduce the time down
to a low setting to check operation on a short purge
time. If it works OK, gradually increase the time until
either the time is correct, or it ceases to time out at
all. In the latter case, there is an air leak in the timer
circuit.
If possible establish the source of the leak with
soapy water and retest the system. This will involve
removing the chassis from the CU –be sure this is
the cause before starting the work. It is VERY
unusual!!
Ensure that the timer is returned to its original
setting and the purge time checked before
putting the system back into service.
Possible cause 3: Faulty Power Switch. Check the
operation of the Power Switch. It should close above
20 psi (1.4 bar).
4.5
Pressure Sensor Calibration If it is
decided that the Minimum Pressure Sensor needs
recalibrating it can either be returned to Expo
Technologies for this service or it can be done by
the user as follows:
Disconnect the pressure sensing pipe from the top
of the diaphragm. (It is a “push-in” quick release
fitting; firmly push inwards the collar surrounding the
pipe where it enters the fitting and then pull the pipe
outwards while maintaining the pressure on the
collar). Unscrew the 2.4” (60mm) diameter
diaphragm housing from the top of the Sensor.
Invert it and note the brass adjusting screw in the
ML383 issue 03 – 09.01.13
centre. Turning the screw inwards (clockwise) will lower
the setting. It is likely that the screw will be very stiff due
to the locking sealant. If the screw cannot be moved the
application of gentle heat in the area of the brass screw
can often help. DO NOT OVERHEAT!
4.6
Filter Cleaning If the filter element needs
cleaning the transparent bowl can be unscrewed and
removed. The filter element also unscrews and can then
be cleaned in soapy water. Do not use solvents on any
part of the filter assembly.
Expo Technologies Tip: If the bowl is very tight, it is
easier to remove the filter by undoing the fitting that
holds the filter into the CU. On Sub-MiniPurge
systems it may be necessary to remove the
Minimum Pressure Sensor diaphragm first.
Section 5
Annex of Options Fitted
Refer to the annexes of this manual for any options
fitted as designated by the model code of the
system.
Expo Technologies Ltd
Expo Technologies Inc,
Unit 2 The Summit,
9140 Ravenna Road Unit #3,
Hanworth Road,
Twinsburg,
Sunbury-On-Thames,
OH 44087,
TW16 5DB. UK.
U.S.A.
Expo Technologies Limited
Page 6 of 6
ML383 issue 03 – 09.01.13
ML432 v14
AGE-SW0Z-017
MiniPurge
System
4. Certificates
SYSTEM
*ZCF
XBR-8TD0-012
MZ-1CF-17-CL
SD7568
XBR-8TD0-010
MZ-1CF-23-GA
MZ-1CF-26-GA
XBR-8TD0-014
MZ-1CF-02-GA
MZ-1CF-01-CL
MZ-1CF-01-CT
EP80-2-11
SAU25-GA
SAU40-GA
XSD-ATD0-003
XSD-RTD0-001 sht 1
XSD-RTD0-001 sht 2
Sira
Sira
INMETRO/TUV
FM
UL
Approval Authority













/bp/PO



/bp/IS



IECEx SIR 07.0027X
01ATEX 1295X
TÜV 12.1462X
1X8A4.AE
E190061
EXPO11ATEX1200X
SC020
Certificate Number

















/pm/PO
/pm/IS
Consult the appropriate drawings according to the selected system.
3. Drawings








/nm/IS







/nm/PO










/ss/IS
25-Nov-14









/ss/PO
DO NOT SCALE
DIMENSIONS IN mm
UNSPECIFIED NO DEC PLACE ±0.5
TOLERANCES
1 DEC PLACE ±0.2
2 DEC PLACE ±0.1
FLATNESS TO BE LESS THAN 0.4mm OVER ANY 100mm LENGTH
PAO
PAO
PAO
CDM
CHK'D
DR'WN
1
2
3
4406
4442
DRAWN
05/01/04 08/02/08 18/3/08
MLC
MLC
PAO
DRAWING STATUS:
APPROVED:
DATE:
MOD. No:
ISSUE:
* /PO option shown
5979
25/11/13
SM
4
FINISH
MATERIAL
SELECT ORIFICE
NOTE: Spark arrestors are only used in CF systems.
APP'D
1.
2.
3.
4.
RE
L
VA IEF
LV
E
JOB No:
CUSTOMER:
Z(Y)CF & DP /bp QUICK INSTALLATION GUIDE
TITLE
TW16 5DB
Expo Technologies Limited SURREY
UNITED KINGDOM
S
RE PAR
ST K
OR
AR
W
FLO OL
R
NT LVE
O
C VA
OL
TR
N
O IT
* C UN
NTS
SHEET No.
1
OF
XBR-8TD0-012
DRAWING No.
SCALE
D
IZE
R
SU RE
ES OSU
R
P CL
EN
1
The contents of this drawing / document are Copyright ã Expo Technologies Limited. They are to be treated as confidential and are returnable
upon request. They are not to be copied or communicated in part or in whole without written consent from Expo Technologies Limited, neither
are they to be used in any way against our interests.
With aid of supplied mounting template cut mounting holes into the enclosure.
Fix MiniPurge Control Unit to enclosure.
Fix Relief Valve to enclosure.
For CF systems only, select orifice for required purge flow rate and fit into Spark
Arrestor with circlip. Fix Spark Arrestor to enclosure ensuring that Control Unit and
Spark Arrestor Unit are diagonally opposing.
5. Connect Output option, /IS or /PO as required, refer to manual.
6. Connect isolated air supply to MiniPurge Control Unit
7. Ensure enclosure door is closed and sealed from leaks.
8. Turn on air supply 60 psig (4 barg).
9. Slowly increase Flow Control Valve until Alarm Indicator turns from RED to GREEN.
10. After Purge time has been completed power can be applied to enclosure.
11. All queries refer to manual for assistance in the first instance.
Quick Installation Guide FOR CF or DP systems:
3rd ANGLE
PROJECTION
DR'WN
CHK'D
APP'D
DO NOT SCALE
DIMENSIONS IN mm
DRAWING STATUS:
APPROVED:
DATE:
MOD. No:
ISSUE:
1X DP/bp/PO
1Z DP/bp/PO
1Z DP/bp/IS
1Z(Y)CF/bp/PO
1Z(Y)CF/bp/IS
FINISH
MATERIAL
JOB No:
TITLE
CUSTOMER:
SURREY KT7 0RH
UNITED KINGDOM
IS PRESSURE SWITCH (IS OPTION)
PLUG 4mm (PE TEST POINT)
Expo Technologies Limited
50
26
SENSOR, MINIMUM PRESSURE
INDICATOR "ALARM/PRESSURIZED"
8
14
FLOW CONTROL VALVE
17
PURGE AIR INLET
1/4"NPTF
8
26
17
14
SHEET No.
DRAWING No.
SCALE
OF
The contents of this drawing / document are Copyright ã Expo Technologies Limited. They are to be treated as confidential and are returnable
upon request. They are not to be copied or communicated in part or in whole without written consent from Expo Technologies Limited, neither
are they to be used in any way against our interests.
50
ENCLOSURE PRESSURE
1/8"NPTF
UNSPECIFIED NO DEC PLACE ±0.5
TOLERANCES
1 DEC PLACE ±0.2
2 DEC PLACE ±0.1
FLATNESS TO BE LESS THAN 0.4mm OVER ANY 100mm LENGTH
1. APPLICABLE MODEL NUMBERS:
NOTES:
ALARM/PRESSURIZED OUTPUT
1/8" NPT(F) (PO OPTION)
PURGE ENCLOSURE
OUTLET 1/8"NPTF
FLOW CONTROL VALVE
ENCLOSURE LOW PRESSURE
ALARM/PRESSURIZED
PURGING INDICATOR
3rd ANGLE
PROJECTION
DO NOT SCALE
DR'WN
CHK'D
APP'D
10 [0.39"]
DRAWING STATUS:
APPROVED:
DATE:
MOD. No:
ISSUE:
56 [2.19"]
4 OFF M6 SCREWS FOR
MOUNTING SYSTEM
197 [7 3/4"]
132 [5.19"]
ENCLOSURE PRESSURE
1/8" NPT(F)
MATERIAL
FINISH
CERTIFICATION LABEL
NOTES:
112 [4.41"]
JOB No:
TITLE
CUSTOMER:
Expo Technologies Limited
1X DP/bp/PO
1Z DP/bp/PO
1Z DP/bp/IS
1Z(Y)CF/bp/PO
1Z(Y)CF/bp/IS
SURREY KT7 0RH
UNITED KINGDOM
2. APPLICABLE MODEL NUMBERS:
1. APPROX WEIGHT: 2kg (4.4 lbs)
10 [0.39"]
91 [3.58"]
66 [2.60"]
CUTOUT DETAIL
SHEET No.
DRAWING No.
SCALE
4 OFF ø7 (9/32") HOLES
2 OFF ø25 (1") HOLES
OF
The contents of this drawing / document are Copyright ã Expo Technologies Limited. They are to be treated as confidential and are returnable
upon request. They are not to be copied or communicated in part or in whole without written consent from Expo Technologies Limited, neither
are they to be used in any way against our interests.
ENCLOSURE PURGING INDICATOR:
LOW PRESSURE ALARM (RED)
PRESSURIZED(GREEN)
FLOW CONTROL VALVE
INDICATOR LABEL
PURGE AIR INLET 1/4" NPT (F)
UNSPECIFIED NO DEC PLACE ±0.5
TOLERANCES
1 DEC PLACE ±0.2
2 DEC PLACE ±0.1
FLATNESS TO BE LESS THAN 0.4mm OVER ANY 100mm LENGTH
112 [4.41"]
101 [3.98"]
76 [2.99"]
76 [2.99"]
38
[1.50"]
PURGE ENCLOSURE OUTLET
1/8" NPT(F)
ALARM/PRESSURIZED
OUTPUT (PO OPTION)
1/8" NPT(F)
[0.39"]
GASKET
Ex nA-NI OR I.S. ALARM PRESSURE SWITCH
(IS OPTION - SEE DRAWING EP80-2-11 Fig 1a)
55 [2.17"]
10
79 [3 15/32"]
127 [5"]
31
55 [2.17"]
14 [0.54"]
DIMENSIONS IN mm
34 [1.35"]
3rd ANGLE
PROJECTION
[1.20"]
9 [0.37"]
DO NOT SCALE
DIMENSIONS IN mm
PAO
PAO
PAO
CDM
APP'D
CHK'D
DR'WN
1
2
3
4406
4442
DRAWN
23/12/03 08/02/08 18/3/08
MLC
MLC
SM
DRAWING STATUS:
APPROVED:
DATE:
MOD. No:
ISSUE:
5979
25/11/13
SM
4
FINISH
MATERIAL
SELECT ORIFICE
NOTE: Spark arrestors are only used in CF systems.
With aid of supplied mounting template cut mounting holes
into the enclosure.
2. Fix MiniPurge Control Unit to enclosure [use 1/4" (6 mm)
Nut and Bolt].
3. Fix Relief Valve to enclosure.
4. For CF systems only, select orifice for required purge flow
rate and fit into Spark Arrestor with circlip. Fix Spark
Arrestor to enclosure ensuring that Control Unit and Spark
Arrestor Unit are diagonally opposing.
5. Connect Output option, /IS or /PO as required, refer to
manual.
6. Connect isolated air supply to MiniPurge Control Unit
7. Ensure enclosure door is closed and sealed from leaks.
8. Turn on air supply 60 psig (4 barg).
9. Slowly increase Flow Control Valve until Alarm Indicator
turns from RED to GREEN.
10. After Purge time has been completed power can be applied
to enclosure.
11. All queries refer to manual for assistance in the first
instance.
1.
F
LIE
RE LVE
VA
A
CUSTOMER:
Z(Y)CF&DP/pm QUICK INSTALLATION GUIDE
JOB No:
TITLE
TW16 5DB
Expo Technologies Limited SURREY
UNITED KINGDOM
PR
ES
EN SUR
C L IZ
OS ED
UR
E
T
NTS
NI
VE
AL
SHEET No.
1
OF
XBR-8TD0-010
DRAWING No.
SCALE
N
CO
U
OL
TR
W LV
FLO TRO
N
CO
1
The contents of this drawing / document are Copyright ã Expo Technologies Limited. They are to be treated as confidential and are returnable
upon request. They are not to be copied or communicated in part or in whole without written consent from Expo Technologies Limited, neither
are they to be used in any way against our interests.
K
AR
SP TOR
ES
RR
UNSPECIFIED NO DEC PLACE ±0.5
TOLERANCES
1 DEC PLACE ±0.2
2 DEC PLACE ±0.1
FLATNESS TO BE LESS THAN 0.4mm OVER ANY 100mm LENGTH
Quick Installation Guide FOR CF or DP systems:
3rd ANGLE
PROJECTION
DR'WN
CHK'D
APP'D
DRAWING STATUS:
APPROVED:
DATE:
MOD. No:
ISSUE:
FINISH
MATERIAL
PURGE OUTLET 1/2" NPT (F)
5 OFF M4 MOUNTING HOLES: SCREWS AND
SEALOC WASHERS SUPPLIED BY EXPO.
I.S. ALARM PRESSURE SWITCH
(SEE DRAWING EP80-2-11)
(IS OPTION)
50
PASSIVE ALARM/PRESSURIZED
OUTPUT 1/8"NPT(F)
(PO OPTION)
8
26
17
ENCLOSURE
PRESSURE
1/8" NPT (F)
15
JOB No:
TITLE
FLOW CONTROL VALVE
PURGE AIR/INERT GAS
SUPPLY 1/2" NPT (F)
CUSTOMER:
SURREY KT7 0RH
UNITED KINGDOM
SHEET No.
DRAWING No.
SCALE
OF
NOTES:
1. SUB MINI-Z-PURGE / SUB MINI-Y-PURGE MUST BE
MOUNTED IN THE ATTITUDE SHOWN.
2. APPROX WEIGHT: 1.4 Kg (3 POUNDS)
3. EQUIVALENT IMPERIAL DIMENSIONS ARE SHOWN IN
BRACKETS
4. APPLICABLE MODEL NUMBERS:
1Z(Y)CF/nm/IS 1Z DP/nm/IS 1X DP/nm/PO
1Z(Y)CF/nm/PO 1Z DP/nm/PO
I.S. PRESSURE SWITCH (PO OPTION)
FLOW CONTROL VALVE
17
50
FILTER, MANUAL DRAIN
15
PLUG 4mm (PE TEST POINT)
SENSOR, MINIMUM PRESSURE
14
26
INDICATOR "ALARM/PRESSURIZED"
SYSTEM BREATHER
DO NOT OBSTRUCT
8
HINGES FITTED
The contents of this drawing / document are Copyright ã Expo Technologies Limited. They are to be treated as confidential and are returnable
upon request. They are not to be copied or communicated in part or in whole without written consent from Expo Technologies Limited, neither
are they to be used in any way against our interests.
Expo Technologies Limited
= =
114 [4 31/64"]
CL
165 [6 1/2"]
14
180 [7 3/32"]
240 [9 29/64"]
UNSPECIFIED NO DEC PLACE ±0.5
TOLERANCES
1 DEC PLACE ±0.2
2 DEC PLACE ±0.1
FLATNESS TO BE LESS THAN 0.4mm OVER ANY 100mm LENGTH
ENCLOSURE
LOW PRESSURE ALARM (RED)
PRESSURIZED (GREEN)
PURGING INDICATOR
DO NOT SCALE
DIMENSIONS IN mm
37 [1 29/64"]
3rd ANGLE
PROJECTION
95 [3 47/64"]
16 [5/8"]
110 [4 21/64"]
DO NOT SCALE
DIMENSIONS IN mm
UNSPECIFIED NO DEC PLACE ±0.5
TOLERANCES
1 DEC PLACE ±0.2
2 DEC PLACE ±0.1
FLATNESS TO BE LESS THAN 0.4mm OVER ANY 100mm LENGTH
PAO
PAO
PAO
CDM
CHK'D
DR'WN
1
2
3
4406
4442
DRAWN
12/01/04 08/02/08 18/3/08
MLC
MLC
PAO
DRAWING STATUS:
APPROVED:
DATE:
MOD. No:
ISSUE:
5979
25/11/13
SM
4
FINISH
MATERIAL
SELECT ORIFICE
NOTE: Spark arrestors are only used in CF systems.
APP'D
1.
2.
3.
4.
A
PR
ES
EN SUR
C L IZ
OS ED
UR
E
JOB No:
CUSTOMER:
Z(Y)CF & DP/ss QUICK INSTALLATION GUIDE
TITLE
TW16 5DB
Expo Technologies Limited SURREY
UNITED KINGDOM
F
LIE
RE LVE
VA
K
AR
SP TOR
ES
RR
NI
T
NTS
SHEET No.
1
OF
XBR-8TD0-014
DRAWING No.
SCALE
CO
NT
RO
LU
1
The contents of this drawing / document are Copyright ã Expo Technologies Limited. They are to be treated as confidential and are returnable
upon request. They are not to be copied or communicated in part or in whole without written consent from Expo Technologies Limited, neither
are they to be used in any way against our interests.
With aid of supplied mounting template cut mounting holes into the enclosure.
Fix MiniPurge Control Unit to enclosure.
Fix Relief Valve to enclosure.
For CF systems only, select orifice for required purge flow rate and fit into Spark
Arrestor with circlip. Fix Spark Arrestor to enclosure ensuring that Control Unit and
Spark Arrestor Unit are diagonally opposing.
5. Connect Output option, /IS or /PO as required, refer to manual.
6. Connect isolated air supply to MiniPurge Control Unit
7. Ensure enclosure door is closed and sealed from leaks.
8. Turn on air supply 60 psig (4 barg).
9. Slowly increase Flow Control Valve until Alarm Indicator turns from RED to GREEN.
10. After Purge time has been completed power can be applied to enclosure.
11. All queries refer to manual for assistance in the first instance.
Quick Installation Guide FOR CF or DP systems:
3rd ANGLE
PROJECTION
58 [2.28"]
DO NOT SCALE
JTP
JTP
BRD
CHK'D
DR'WN
1
5
6
7
CERT RELATED
FINISH
MATERIAL
35 [1.38"]
240 [9 29/64"]
180 [7.09"]
MOUNTING HOLES
85 [3.35"]
MiniPurge
180 [7 7/64"]
150 [59/64"]
OUTLET POINTING DOWNWARDS.
JOB No:
6 [0.24"]
SYSTEM BREATHERDO NOT OBSTRUCT
1Z DP/ss/IS
1Z(Y)CF/ss/PO 1ZDP/ss/PO
1Z(Y)CF/ss/IS
CUSTOMER:
MINIPURGE 1Z(Y)CF&DP/ss/IS & PO
N.T.S
SHEET No.
1
OF
1
MZ-1CF-02-GA
DRAWING No.
SCALE
1X DP/ss/PO
APPLICABLE MODEL NUMBERS
4. WALL MOUNTING BRACKETS ARE OPTIONAL.
3. USE DIRECT MOUNTING WHEREVER POSSIBLE.
TW16 5DB
Expo Technologies Limited SURREY
UNITED KINGDOM
TITLE
PURGE AIR/INERT
GAS SUPPLY
1/2"NPT(F)
PASSIVE ALARM
"PRESURIZED"
OUTPUT 1/8"
NPT(F)GAS SUPPLY
(PO OPTION)
THE MINIPURGE MUST BE MOUNTED WITH THE PURGE
2. APPROX WEIGHT: 5 kg (11 lbs)
1.
NOTES:
ENCLOSURE PRESSURE 1/8"NPT(F)
CERTIFICATION LABEL
77 [3.03"]
20 [0.79"]
ENCLOSURE LOW PRESSURE ALARM (RED)/
PRESSURIZED (GREEN) PURGING INDICATOR
The contents of this drawing / document are Copyright ã Expo Technologies Limited. They are to be treated as confidential and are returnable
upon request. They are not to be copied or communicated in part or in whole without written consent from Expo Technologies Limited, neither
are they to be used in any way against our interests.
210 [8.27"]
MOUNTING HOLES
INDICATOR LABEL
3955
4406
5952
DRAWN
03/03/1995 01/03/05 08/02/08 16/10/13
HE
MLC
SM
JTP
DRAWING STATUS:
APPROVED:
DATE:
MOD. No:
ISSUE:
PURGE OUTLET 1/2"NPT(F)
MOUNTING BAR
(SPECIAL OPTION ONLY)
CABLE ENTRY SUITABLE FOR M20
GLAND (GLAND NOT SUPPLIED)
(IS OPTION)
APP'D
28 [1.10"]
UNSPECIFIED NO DEC PLACE ±0.5
TOLERANCES
1 DEC PLACE ±0.2
2 DEC PLACE ±0.1
FLATNESS TO BE LESS THAN 0.4mm OVER ANY 100mm LENGTH
230 [9.06"]
DIMENSIONS IN mm
65 [2.56"]
3rd ANGLE
PROJECTION
75 [2.95"]
130 [5.12"]
DR'WN
CHK'D
APP'D
DIMENSIONS IN mm
SENSOR, MINIMUM PRESSURE
FILTER, MANUAL DRAIN
FLOW CONTROL VALVE
PLUG 4mm (PE TEST POINT)
I.S. PRESSURE SWITCH (IS OPTION ONLY)
14
15
17
26
50
FINISH
MATERIAL
INDICATOR "ALARM/PRESSURIZED"
8
15
BLACK COLLAR (PLUGGED)
14
26
7
7
DOOR INTERNAL
JOB No:
CUSTOMER:
Expo Technologies Limited
SURREY KT7 0RH
UNITED KINGDOM
NOTES:
1. APPLICABLE MODEL NUMBNERS:
1Z(Y)CF/ss/IS
1Z(Y)CF/ss/PO
1Z DP/ss/IS
1Z DP/ss/PO
1X DP/ss/PO
8
SHEET No.
DRAWING No.
SCALE
OF
The contents of this drawing / document are Copyright ã Expo Technologies Limited. They are to be treated as confidential and are returnable
upon request. They are not to be copied or communicated in part or in whole without written consent from Expo Technologies Limited, neither
are they to be used in any way against our interests.
TITLE
UNSPECIFIED NO DEC PLACE ±0.5
TOLERANCES
1 DEC PLACE ±0.2
2 DEC PLACE ±0.1
FLATNESS TO BE LESS THAN 0.4mm OVER ANY 100mm LENGTH
ENCLOSURE PRESSURE
TEST POINT
DO NOT SCALE
17
DRAWING STATUS:
APPROVED:
DATE:
MOD. No:
ISSUE:
50
3rd ANGLE
PROJECTION
DR'WN
CHK'D
APP'D
DRAWING STATUS:
APPROVED:
DATE:
26
1
3
2
50
8
FINISH
MATERIAL
JOB No:
TITLE
CUSTOMER:
Expo Technologies Limited
/IS OPTION
IS SWITCH
/PO OPTION
MINIMUM PRESSURE &
PURGING INDICATOR
RED = ALARM
GREEN = PRESSURE OK
PURGE OUTLET TO PRESSURIZED ENCLOSURE
ENCLOSURE PRESSURE
7
15 FILTER
(OPTIONAL)
SURREY KT7 0RH
UNITED KINGDOM
ALARM
CONTACT
SHEET No.
DRAWING No.
SCALE
OF
PASSIVE ALARM / PRESSURIZED" SIGNAL
60-115 PSI (4-8 barg)
PURGE SUPPLY AIR OR INERT GAS
60 psig (4 barg) - MAX 115 PSI (8 barg)
The contents of this drawing / document are Copyright ã Expo Technologies Limited. They are to be treated as confidential and are returnable
upon request. They are not to be copied or communicated in part or in whole without written consent from Expo Technologies Limited, neither
are they to be used in any way against our interests.
MINIMUM
14 PRESSURE
SENSOR
UNSPECIFIED NO DEC PLACE ±0.5
TOLERANCES
1 DEC PLACE ±0.2
2 DEC PLACE ±0.1
FLATNESS TO BE LESS THAN 0.4mm OVER ANY 100mm LENGTH
ENCLOSURE PRESSURE
TEST POINT (PLUGGED)
DO NOT SCALE
DIMENSIONS IN mm
FLOW CONTROL
VALVE
MOD. No:
ISSUE:
17
3rd ANGLE
PROJECTION
Vmax = 30V
Imax = 100mA
Ci = 0 Li = 0
Unit
Outputs e.g. to relays
or power contactors.
PCB Pt# S108/*
(* = configuration)
MOD NUMBER
4330
5076
5297
REV.
4
05
06
20/07/2011
01/11/2010
13/7/2007
APPROVED DATE
AMO
AMO
MLC
APPROVED
DR'WN
AMO
CHK'D
AMO
APP'D
AMO
Certified
13/07/2007
DRAWING STATUS:
DRAWN DATE:
THIS IS A CERTIFICATION
DOCUMENT.
ANY UNAUTHORISED
CHANGE INVALIDATES
APPROVAL.
Alternatively: For Gas Group A, B with Vpeak = 19.2V Imax for I.S. is 350mA.
6 For Gas Groups A, B permitted Imax for I.S., for V peak = 30V is 101 mA
5 "Simple Apparatus" is a device that will not generate or store more than 1.2V, 0.1A, 25mW or 20uJ
Li plus inductance of interconnecting cabling is less than La of the associated apparatus
Ci plus capacitance of interconnecting cabling is less than Ca of the associated apparatus
Isc or It of associated apparatus is less than Imax
4 Voc or Vt of associated apparatus is less than Vmax
SURREY KT7 0RH
Simple Apparatus Connection for
Manual Override Switch (dry contact)
Vmax = 0V, Imax = 0A, Ci = 0, Li = 0
Vmax = 30V
Imax = 100mA
Ci = 0 Li = 0
JOB No:
TITLE
CUSTOMER:
MINIPURGE OPTION 'IS'
Expo Technologies Limited UNITED KINGDOM
3 For guidance on Installation see ANSI/ISA RP12.6, (Installation of IS Instrument Systems in Class I Hazardous Locations)
M
0
2
1
+
Hazardous Location
Class I or II, Div 1 or 2
Groups A, B, C, D, E, F and G
MiniPurge: Option Code /IS
Fig 1b Multi-channel interface circuit
e.g. "X" pressurization Alarm & Power Control
Unit
Interface
I.S.
NTS
SHEET No.
1
OF
1
06
REV:
EP80-2-11
DRAWING No.
SCALE
Outputs e.g. to relays
or power contactors.
Power supply
(or suitably protected apparatus)
Non-Hazardous Location
The contents of this drawing / document are Copyright © Expo Technologies Limited. They are to be treated as confidential
and are returnable upon request. They are not to be copied or communicated in part or in whole without written consent
from Expo Technologies Limited, neither are they to be used in any way against our interests.
2 Installation shall be in accordance with the manufacturer's instructions and the National Electrical Code (ANSI/NFPA 70)
1 Electrical equipment connected to associated apparatus should not use or generate more than 250 volts
Notes for both Fig 1a and Fig 1b
Simple apparatus
device
Interface
I.S.
Power supply
(or suitably protected apparatus)
Non-Hazardous Location
Fig 1a Single channel interface circuit
e.g. "Y" or "Z" Pressurization Alarm circuit
DO NOT SCALE
DIMENSIONS IN mm
Hazardous Location
Class I or II, Div 1 or 2
Groups A, B, C, D, E, F and G
MiniPurge: Option Code /IS
3rd ANGLE
PROJECTION
DR'WN
CHK'D
DRAWING STATUS:
APPROVED:
DATE:
MOD. No:
ISSUE:
FINISH
MATERIAL
DECIDE UPON THE REQUIRED FLOW RATE.
SELECT THE REQUIRED ORIFICE PLATE.
INSTALL THE PLATE IN THE SPARK ARRESTOR BODY AND RETAIN WITH THE CIRCLIP.
i
ii
iii
APP'D
ASSEMBLY INSTRUCTIONS:
3
THE FLOW RATE OF THE CONTINUOUS FLOW SYSTEM MAY BE CHOSEN BY THE
USER BY SELECTING THE REQUIRED ORIFICE PLATE.
FOR RANGE OF FLOW RATES SEE TABLE OF VALUES OPPOSITE.
FLOW RATE SELECTION:
EXPO PART No. SAU25
RECOMMENDED MOUNTING HOLE ø26 [1"]
WEIGHT: 0.25kg [0.55lb]
ø55 [2 5/32"]
SELECTION OF ORIFICE PLATE
1.4
3
4.8
6.4
8.0
6
7
8
225
180
135
90
65
40
25
10
Nl/min
0.24
10.5
0.81
1.08
1.35
36
48
60
JOB No:
TITLE
CUSTOMER:
SHEET No.
DRAWING No.
SCALE
* VC = VOLUME CHANGES
(BASED ON 30min PURGE TIME)
OF
Nl/min =NORMAL LITRES/MINUTE
scfm = STANDARD CUBIC FEET/MINUTE
SURREY KT7 0RH
UNITED KINGDOM
0.54
24
0.39
0.15
8.3
17.2
0.06
m³ (5VC*)
3.0
ft³ (4VC*)
ENCLOSURE VOLUME
Expo Technologies Limited
3.2
5
2.3
0.9
2
4
0.4
1
scfm
PURGE FLOW
BASED ON A PURGE SUPPLY OF 4 barg [60 psi]
& ENCLOSURE PRESSURE OF 2.5 mbarg [1" WC]
ORIFICE
PLATE No
WASHER
RETAINING NUT
ORIFICE PLATE & CIRCLIP
(SEE NOTE 2)
GASKET
PART SECTION THRU SPARK ARRESTOR BODY
SPARK ARRESTOR BODY
The contents of this drawing / document are Copyright ã Expo Technologies Limited. They are to be treated as confidential and are returnable
upon request. They are not to be copied or communicated in part or in whole without written consent from Expo Technologies Limited, neither
are they to be used in any way against our interests.
TO SUIT PANEL THICKNESS
1.5 [1/16"] MINIMUM
9.5 [3/8"] MAXIMUM
2
25 [1"]
35 [1 3/8"]
UNSPECIFIED NO DEC PLACE ±0.5
TOLERANCES
1 DEC PLACE ±0.2
2 DEC PLACE ±0.1
FLATNESS TO BE LESS THAN 0.4mm OVER ANY 100mm LENGTH
TO ENSURE EFFECTIVE PURGING THE SPARK ARRESTOR SHOULD BE LOCATED
ON THE PRESSURIZED ENCLOSURE AS FAR AWAY AS PRACTICABLE FROM THE
PURGE AIR INLET.
DO NOT SCALE
DIMENSIONS IN mm
1
NOTES:
3rd ANGLE
PROJECTION
M25 x 1.5P
DR'WN
CHK'D
APP'D
DRAWING STATUS:
APPROVED:
DATE:
MOD. No:
ISSUE:
FINISH
MATERIAL
JOB No:
TITLE
60.0
75.0
97.5
120.0
1.35
1.65
2.19
2.70
ENCLOSURE VOLUME
ft³ (4VC*)
m³ (5VC*)
CUSTOMER:
SHEET No.
DRAWING No.
SCALE
FIT THE ORIFICE PLATE IN THE SPARK ARRESTOR BODY AND RETAIN WITH THE CIRCLIP.
SELECT THE REQUIRED ORIFICE PLATE.
USE THE TABLE ABOVE TO CHOOSE THE REQUIRED FLOW RATE.
ASSEMBLY INSTRUCTIONS:
TW16 5DB
Expo Technologies Limited SURREY
UNITED KINGDOM
(c)
TO ENSURE EFFECTIVE PURGING THE SPARK ARRESTOR
SHOULD BE LOCATED ON THE PRESSURIZED ENCLOSURE AS
FAR AWAY AS PRACTICABLE FROM THE PURGE AIR INLET.
3.
RECOMMENDED MOUNTING HOLE ø41 [158" DIA]
(b)
EXPO PART CODE : MSK-S000-020
2.
4.
(a)
WEIGHT: 0.25kg [0.55lb]
225
275
365
450
PURGE FLOW
Nl/min
scfm
8
10
13
16
Nl/min =NORMAL LITRES/MINUTE
scfm = STANDARD CUBIC FEET/MINUTE
* VC = VOLUME CHANGES (BASED ON 30min PURGE TIME)
1
2
3
4
ORIFICE
PLATE No
BASED ON A PURGE SUPPLY OF 4 barg [60 psi]
AND ENCLOSURE PRESSURE OF 2.5 mbarg [1" WC]
SELECTION OF ORIFICE PLATE FOR CF SYSTEMS
OF
The contents of this drawing / document are Copyright ã Expo Technologies Limited. They are to be treated as confidential and are returnable
upon request. They are not to be copied or communicated in part or in whole without written consent from Expo Technologies Limited, neither
are they to be used in any way against our interests.
]
2"
1.
M40 NUT
ORIFICE PLATE
AND CIRCLIP
17.5 [11/16"]
1.5 [1/16"] MINIMUM
9.5 [3/8"] MAXIMUM
PANEL THICKNESS
UNSPECIFIED NO DEC PLACE ±0.5
TOLERANCES
1 DEC PLACE ±0.2
2 DEC PLACE ±0.1
FLATNESS TO BE LESS THAN 0.4mm OVER ANY 100mm LENGTH
/3
NOTES:
GASKET
SPARK ARRESTOR BODY
60 [2 3/8"]
19.5 [25/32"]
DO NOT SCALE
DIMENSIONS IN mm
AIR/INERT GAS EXHAUST
3rd ANGLE
PROJECTION
23
[1
44
DR'WN
CHK'D
APP'D
3rd ANGLE
PROJECTION
Y
DRAWING STATUS:
APPROVED:
DATE:
MOD. No:
ISSUE:
MIN 25
[1"]
X
DO NOT SCALE
DIMENSIONS IN mm
FINISH
MATERIAL
Z
RLV36
RLV52
SIZE 2
SIZE 3
JOB No:
TITLE
CUSTOMER:
Expo Technologies Limited
RLV25
SIZE 1
MINIPURGE
HEIGHT Y
SURREY KT7 0RH
UNITED KINGDOM
SHEET No.
DRAWING No.
SCALE
110 [4.33"] 185 [7.28"] 37 [1.46"]
88 [3.46"] 170 [6.69"] 33 [1.30"]
62 [2.44"] 133 [5.24"] 28 [1.10"]
WIDTH X
DEPTH Z
OF
The contents of this drawing / document are Copyright ã Expo Technologies Limited. They are to be treated as confidential and are returnable
upon request. They are not to be copied or communicated in part or in whole without written consent from Expo Technologies Limited, neither
are they to be used in any way against our interests.
GASKET 5 [0.20"] BEFORE COMPRESSION
UNSPECIFIED NO DEC PLACE ±0.5
TOLERANCES
1 DEC PLACE ±0.2
2 DEC PLACE ±0.1
FLATNESS TO BE LESS THAN 0.4mm OVER ANY 100mm LENGTH
133 [5.24"]
DR'WN
CHK'D
APP'D
DRAWING STATUS:
APPROVED:
DATE:
MOD. No:
ISSUE:
-0
-0
HOLE ø25 +2
[1" +0.1
]
= 62 [2.44"] =
=
44
[1.73"]
=
DETAIL 'A'
RLV25 CUTOUT
46 [1.81"]
=
=
44
[1.73"]
4 HOLES
ø5.5
[7/32"]
RLV
OUTLINE
170 [6.69"]
DO NOT SCALE
FINISH
MATERIAL
56 [2.20"]
88 [3.46"]
=
=
=
JOB No:
TITLE
CUSTOMER:
Expo Technologies Limited
-0
-0
HOLE ø36 +2
[1 1/2"+0.1
]
64 [2.52"]
=
4 HOLES
ø5.5
[7/32"]
RLV
OUTLINE
=
=
SHEET No.
DRAWING No.
SCALE
-0
-0
HOLE ø52 +2
[2" +0.1
]
109 [4.29"]
76 [3.00"]
SURREY KT7 0RH
UNITED KINGDOM
=
=
DETAIL 'C'
RLV52 CUTOUT
4 HOLES
ø5.5
[7/32"]
RLV
OUTLINE
The contents of this drawing / document are Copyright ã Expo Technologies Limited. They are to be treated as confidential and are returnable
upon request. They are not to be copied or communicated in part or in whole without written consent from Expo Technologies Limited, neither
are they to be used in any way against our interests.
DETAIL 'B'
RLV36 CUTOUT
UNSPECIFIED NO DEC PLACE ±0.5
TOLERANCES
1 DEC PLACE ±0.2
2 DEC PLACE ±0.1
FLATNESS TO BE LESS THAN 0.4mm OVER ANY 100mm LENGTH
185 [7.28"]
DIMENSIONS IN mm
65 [2.56"]
3rd ANGLE
PROJECTION
=
64 [2.52"]
=
=
76 [3.00"]
OF
=
Address:
This equipment and any acceptable variation thereto is specified in the schedule to this certificate and
the documents therein referred to.
Sira Certification Service, notified body number 0518 in accordance with Article 9 of Directive 94/9/EC of 23
March 1994, certifies that this equipment has been found to comply with the Essential Health and Safety
Requirements relating to the design and construction of equipment intended for use in potentially explosive
atmospheres given in Annex II to the Directive.
7
8
29097
Form 9400 Issue 1
This certificate and its schedules may only be
reproduced in its entirety and without change.
Project Number
II 2(2) GD
Ex [px] ia IIC T6 Gb
Ex [p] ia IIIC T95°C Db
(Ta –20oC to +55oC)
II 2(3) GD
Ex [pz Gc ] IIC T6 Gb
Ex [p Dc] IIIC T85°C Db
(Ta –20°C to +55°C)
Standard /ET versions
II 2(2) GD
Ex [px] IIC T6 Gb
Ex [py] IIC T6 Gb
Ex [p] IIIC T85°C Db
(Ta –20°C to +55°C)
Page 1 of 7
Sira 01ATEX1295X
Issue 8
Metal foam
Tortuous path with at least 4 x 90°or 2 x 180° bends
Multi-layer stainless steel mesh
Knitted mesh
Threaded Orifices e.g. ¼″ NPT or 2″ BSP with a built in spark arrester. These are selected to maintain a
desired back pressure within the Ex p protected apparatus when used with the Continuous Flow options.
The designation of each outlet orifice indicates the nominal inlet diameter. The designations are as
follows: SA3, SA6, SA9, SA12, SA19, SA25, SA32, SA38 and SA50.
Plain holes in the Relief Valve disk, sized according to the flow rate required.
Replaceable orifice type SAU**.
•
•
+44 (0) 1244 670900
+44 (0) 1244 681330
info@siracertification.com
www.siracertification.com
Tel:
Fax:
Email:
Web:
Form 9400 Issue1
Page 2 of 7
Rake Lane, Eccleston, Chester, CH4 9JN, England
+44 (0) 1244 670900
+44 (0) 1244 681330
info@siracertification.com
www.siracertification.com
Tel:
Fax:
Email:
Web:
Sira Certification Service
Pneumatically Operated Outlet Valve - The pneumatically operated outlet valve is used to
positively open or close the outlet of the purged enclosure by means of a spring return pneumatic
cylinder. Systems fitted with the Pneumatically Operated Outlet Valve will carry the option OV.
High Pressure Sensor for LC Systems (HP code) - If the pressure in the pressurized enclosure
rises above the setting of the High Pressure sensor, the purge gas flow is isolated from the pressurised
enclosure. The valve isolates both the leakage compensation and the purge streams. On detecting the
overpressure, an optional facility is available for the generation of an alarm or indicator. On systems
with a High Pressure sensor, the relief valve may be omitted.
High Pressure Sensor for CF Systems (HP code) - If the pressure in the pressurized enclosure
rises above the setting of the High Pressure sensor, the controller resets cutting the power to the
enclosure. On detecting the overpressure an optional facility is available for the generation of an alarm
or indicator. On systems with a High Pressure sensor, the relief valve may be omitted.
•
•
•
Outlet Orifice - Three types of orifice are used:
•
•
The outlet of each relief valve is fitted with a spark arrestor, of which there are four optional types:
RLV3, RLV6, RLV9, RLV12, RLV19, RLV25, RLV26, RLV52, RLV36, RLV75, RLV104, RLV125, RLV150 and
RLV200.
Relief Valve - The MiniPurge controller is supplied with an optional overpressure relief valve, which is to be
fitted to the Ex p protected apparatus to prevent an internal overpressure above the maximum overpressure
rating of the apparatus. There are 14 models of relief valve; the designation of each relief valve refers to its
nominal bore in mm, as follows:
The MiniPurge option pD is for use in combustible dust
The MiniPurge control unit may be supplied within a heated enclosure to permit the use of the system within
an ambient temperature down to –50oC.
LC-Leakage compensation only after initial high purge
CF-Continuous flow (same flow rate during and after purging)
CF2-Two flow CF system with initial high purge rate only at one orifice
CFHP-Continuous (lower) flow after initial high purge
The Purge Controllers are pneumatically operated devices, which are intended to provide a given flow rate of
purging gas for a predetermined time to unspecified Ex p protected electrical equipment. The MiniPurge
Control Units provide one of the following four methods of purge operation.
DESCRIPTION OF EQUIPMENT
This certificate and its schedules may only be
reproduced in its entirety and without change.
13
EC TYPE-EXAMINATION CERTIFICATE
SCHEDULE
CERTIFICATION
Rake Lane, Eccleston, Chester, CH4 9JN, England
Sira Certification Service
C Ellaby
Deputy Certification Manager
Ex [px] dem ia IIC T3 or T4 Gb
Ex [p] ia IIIC T200°C or T135°C Db
(Ta –50°C to +55°C)
Low temperature /ET versions
II 2(2) GD
II 2(2) GD
Ex [px] dem IIC T3 or T4 Gb
Ex [p] IIIC T200°C or T135°C Db
(Ta –50°C to +55°C)
Low temperature versions
The marking of the equipment shall include the following:
12
Standard versions
This EC type-examination certificate relates only to the design and construction of the specified equipment. If
applicable, further requirements of this Directive apply to the manufacture and supply of this equipment.
EN 61241-4: 2006
11
EN 60079-2:2007
If the sign ‘X’ is placed after the certificate number, it indicates that the equipment is subject to special
conditions for safe use specified in the schedule to this certificate.
IEC 60079-0:2011
Compliance with the Essential Health and Safety Requirements, with the exception of those listed in the
schedule to this certificate, has been assured by compliance with the following documents:
The examination and test results are recorded in the confidential reports listed in Section 14.2.
Unit 2, The Summit, Hanworth Road, Sunbury on Thames, Surrey TW16 5DB UK
EXPO Technologies Limited
10
9
Applicant:
8
6
Issue:
5
Sira 01ATEX1295X
Purge Controllers: Sub-MiniPurge, MiniPurge, Super-MiniPurge,
Super-MiniPurge 1800/3500/7000/7000X
Certificate Number:
Equipment:
3
Equipment intended for use in Potentially Explosive Atmospheres Directive 94/9/EC
2
4
EC TYPE-EXAMINATION CERTIFICATE
1
CERTIFICATION
Form 9400 Issue1
This certificate and its schedules may only be
reproduced in its entirety and without change.
Page 3 of 7
Tel:
Fax:
Email:
Web:
+44 (0) 1244 670900
+44 (0) 1244 681330
info@siracertification.com
www.siracertification.com
Rake Lane, Eccleston, Chester, CH4 9JN, England
Sira Certification Service
Model Number Designation for ATEX approved MiniPurge systems
a
Size or Capacity
Model Number:
1
Sub-MiniPurge
2
MiniPurge
1 X LC cs DS SS AA MO FM OA TW
3
Super-MiniPurge
Key:
4
Super-MiniPurge 1800
a b cc mm Example option codes
5
Super-MiniPurge 3500
6
Super-MiniPurge 7000
7
Super-MiniPurge xxxx
b
Pressurization Type
X
X Pressurization
Y
Y Pressurization
Z
Z Pressurization
cc
Action after initial purging
LC
Leakage Compensation only after initial High Purge
CF
Continuous Flow (same flow rate during and after purging)
CF2
Two Flow CF system with initial High Purge rate but only one orifice
CFHP
Continuous (lower) Flow after initial High Purge
DP
Dust Protection (pressurization only)
mm
Material of the Control Unit Enclosure
al
Aluminium alloy
cs
Mild steel, painted
ss
Stainless steel
bp
Back Plate only
co
Chassis only
pm
Panel mounting
nm
Non-Metallic
Option codes (Added only if used)
AA
Active Alarm output fitted.
AC
Alarm cancellation circuit.
AO
"Alarm Only" Action on Pressure or Flow Failure.
AS
Alarm "Action on Pressure or Flow failure", Selector valve.
CS
Containment System Monitor.
DS
Door switch Power Interlock fitted.
DT
Delayed Trip after Pressure or Flow failure.
DXXX
Special design for specific flow rates
ET
Electronic Timer
FM
Flow Meter(s) fitted.
HP
System LC or CF with High Pressure Sensor
IS
Internal Switches suitable for Ex i circuits.
MO
Manual Override fitted.
MT
Mechanical Timer.
OA
On/Off switch controlling Protective gas and logic supply.
OB
On/Off switch controlling logic supply only.
OC
On/Off switch controlling Protective gas supply only.
OS
Outlet (Orifice) Selector valve.
OV
Outlet valve, pneumatically operated.
PA
"Ex" switch(es) built-in, with/without "Ex" junction box.
PC
PE Pressure Control Leakage Compensation Valve (CLAPS System.)
PO
Pneumatic Output signals for Power and Alarm control.
SP
Secondary Pressurization supply options.
SS
Separate Supply for Protective gas and Logic air.
TW
Twin (or more) outputs for two or more separate pressurized enclosures purged in parallel
Old Name:
Expo Telektron Safety System Limited
New name:
Expo Technologies Limited
A change of the Applicant’s name on the certificate and the substitution of the new name for the
old name on the approved label affixed to the purge controllers:
Any suitably ATEX, Category 2 approved cable gland may be used, if it can be used with the
ambient temperature range.
An Ex e terminal box is provided within the main enclosure for connection of the heater leads. This
polyester box is manufactured by Bartec and coded Ex e II T6 under BAS 98ATEX3008X. Other
alternative ATEX terminal boxes may be used as a replacement if they are suitably certified, carry
the same or greater ambient temperature range, occupy the same or smaller physical space, have
the same certification code and have the same Temperature Class.
RTDs are fitted to the air inlet pipe-work and inside the purge controller enclosure.
The enclosure is made from 1.5mm or 2.5 mm thick stainless or mild steel painted and the lid is
made from 1.5 mm thick stainless steel, lined with 38 mm thick insulation, or other materials with
equivalent insulating properties. The purge inlet, purge outlet and pressure sensing lines are
similarly insulated. The door may optionally be hinged with quick release catches, these will be
fitted with a padlock. An enclosure breather tube is fitted to help prevent condensation. A plastic
clear viewing window may optionally be fitted to the door.
The heater (500 W maximum) is manufactured by Intertec-Hess GmbH and coded Ex d m IIC T3
(max) under PTB 02ATEX1041X. If the outer enclosure is reduced in size the power of the heater
may be reduced in proportion to the reduction in surface area. Other alternative heaters may be
used as a replacement if they are suitably certified, carry the same or greater ambient
temperature range, occupy the same or smaller physical space, have the same certification code
and have the same or more restrictive Temperature Class.
Form 9400 Issue1
II 2(2) G D
Page 4 of 7
The ATEX coding is modified to:
[Ex pD] II T200°C 21 (Ta = -20°C to +55°C) [Ex pD] II T85°C 21 (Ta = -20°C to +55°C) -
Tel:
Fax:
Email:
Web:
+44 (0) 1244 670900
+44 (0) 1244 681330
info@siracertification.com
www.siracertification.com
Rake Lane, Eccleston, Chester, CH4 9JN, England
Sira Certification Service
(used with the low temperature versions)
(used with the standard temperature versions)
To permit the pressurisation of enclosures for the exclusion of combustible dusts in accordance
with IEC61241-4:2001 and modification of the marking to include one of the following:
This certificate and its schedules may only be
reproduced in its entirety and without change.
i.
Sira 01ATEX1295X
Issue 8
CERTIFICATION
The purge controller to be fitted inside an additional, heated, stainless steel enclosure that allows
it to be used down to -50oC.
Variation 2 This variation introduced the following change:
ii.
i.
Variation 1 This variation introduced the following changes:
EC TYPE-EXAMINATION CERTIFICATE
EC TYPE-EXAMINATION CERTIFICATE
Sira 01ATEX1295X
Issue 8
SCHEDULE
SCHEDULE
CERTIFICATION
Following appropriate re-assessment to demonstrate compliance with the requirements of the EN
60079 series of standards, the documents originally listed in section 9, EN 50014:1997
(amendments A1 to A2) and EN 50016:1995, were replaced by EN 60079-0:2006, EN 60079-1:2004,
EN 61241-0:2006 and EN 61241-1:2006, the markings in section 12 were updated accordingly.
The removal of special conditions for safe use that were not specifically associated with the
equipment covered by this certificate.
To permit the inclusion of the following coding for the Low Temperature MiniPurge Enclosure:
Ex [p] dem IIC T4
Ex pD II 21 T135°C
(Ta –50oC to +55oC)
The introduction of the /ET version, an alternative to the pneumatic or mechanical timer system,
this incorporates an Electronic Timer Module ETM-IS**-*** in the Mini Purge, the certification
includes ‘ia’ marking when the ETM is fitted.
The dust marking was changed to be consistent with the marking for gases and vapours.
The introduction of a high pressure sensor for the LC option.
Following appropriate re-assessment to demonstrate compliance with the requirements of the
latest EN 60079 series of standards, the documents previously listed in section 9, EN 60079-0:
2006 and EN 60079-2: 2004 were replaced by those currently listed (EN 61241-0: 2006 was
removed as this is incorporated into the current version of 60079-0), the markings in section 12
were updated accordingly and a new condition of certification was added.
Date
3 July 2002
29 March 2004
30 September 2004
19 September 2006
Form 9400 Issue1
This certificate and its schedules may only be
reproduced in its entirety and without change.
Issue
0
1
2
3
Page 5 of 7
Report no.
R53A7169A
R53V11342A
R51A11080A
R51A15629A
Tel:
Fax:
Email:
Web:
+44 (0) 1244 670900
+44 (0) 1244 681330
info@siracertification.com
www.siracertification.com
Rake Lane, Eccleston, Chester, CH4 9JN, England
Sira Certification Service
Comment
The release of prime certificate.
The introduction of Variation 1.
The introduction of Variation 2.
The re-issue of Variation 2 to include the changes
described in report number R51A15629A.
Associated Sira Reports and Certificate History
Refer to Certificate Annexe.
Drawings
14.2
DESCRIPTIVE DOCUMENTS
14.1
The recognition of the Applicant’s address change from Summer Road, Thames Ditton, Surrey KT7
0RH to Unit 2, The Summit, Hanworth Road, Sunbury on Thames, Surrey TW16 5DB.
14
i.
Variation 7 - This variation introduced the following changes:
i.
Variation 6 - This variation introduced the following changes:
ii.
iii.
i.
Variation 5 - This variation introduced the following changes:
i.
Variation 4 - This variation introduced the following changes:
ii.
i.
Variation 3 This variation introduced the following changes:
This MiniPurge Control Unit shall be incorporated into equipment and the appropriate Conformity
Assessment Procedures applied to the combination as defined by Directive 94/9/EC. This certificate
does not cover the combination.
15.4
Form 9400 Issue1
Page 6 of 7
Holders of Type Examination Certificates are required to comply with the production control
requirements defined in Article 8 of directive 94/9/EC.
17.2
Tel:
Fax:
Email:
Web:
+44 (0) 1244 670900
+44 (0) 1244 681330
info@siracertification.com
www.siracertification.com
Rake Lane, Eccleston, Chester, CH4 9JN, England
Sira Certification Service
The use of this certificate is subject to the Regulations Applicable to Holders of Sira Certificates.
17.1
This certificate and its schedules may only be
reproduced in its entirety and without change.
CONDITIONS OF CERTIFICATION
17
The relevant EHSRs that are not addressed by the standards listed in this certificate have been
identified and individually assessed reports listed in Section 14.2.
ESSENTIAL HEALTH AND SAFETY REQUIREMENTS (EHSRs)
The values of the safety parameters shall be set in accordance with the equipment certificate that
covers the combination of the pressurised enclosure(s) and MiniPurge Control Unit.
15.3
16
The installer/user shall ensure that the MiniPurge Control Unit is installed in accordance with the
equipment certificate that covers the combination of the pressurised enclosure(s) and MiniPurge
Control Unit.
15.2
The purge controller, low temperature version, shall be protected by a safety related system that
ensures that it cannot be energised if the temperature of the air inlet or purge controller falls below 20oC. This system shall utilise the RTDs that are fitted to the purge controller to provide the
appropriate level of system integrity, i.e. a level of operational safety of Cat 3 according to EN 954-1 for
ATEX Category 2 (Zone 1) applications; note that these RTDs have not been assessed as a safety
related device in accordance with EHSR 1.5 of Directive 94/9/EC.
When using the AO, AS and DT options, the recommendations for the additional requirements of Ex p
apparatus contained within EN 60079-14 shall be applied.
15.5
SPECIAL CONDITIONS FOR SAFE USE (denoted by X after the certificate number)
R25983A/00
R29097A/00
Comment
This Issue covers the following changes:
• All previously issued certification was rationalised
into a single certificate, Issue 4, Issues 0 to 3
referenced above are only intended to reflect the
history of the previous certification and have not
been issued as documents in this format.
• The introduction of Variation 3.
The introduction of Variation 4.
This Issue covers the following changes:
• This certificate history was modified to recognise
that that Variation 2 was re-issued, subsequent
Variations have therefore been re-numbered.
• The introduction of Variation 5.
The introduction of Variation 6.
The introduction of Variation 7.
15
07 December 2011
05 October 2012
7
8
R51L19695A
R23665A/00
Report no.
R51L15966B
Sira 01ATEX1295X
Issue 8
CERTIFICATION
15.1
18 February 2009
22 December 2010
Date
7 June 2007
5
6
Issue
4
EC TYPE-EXAMINATION CERTIFICATE
EC TYPE-EXAMINATION CERTIFICATE
Sira 01ATEX1295X
Issue 8
SCHEDULE
SCHEDULE
CERTIFICATION
The following routine tests shall be performed by the manufacturer:
17.4
Form 9400 Issue1
Page 7 of 7
The Purge Controllers: Sub-MiniPurge, MiniPurge, Super-MiniPurge, Super-MiniPurge
1800/3500/7000/7000X shall not be marked as suitable for use in explosive dust atmospheres when a
non-metallic or painted housing is used.
17.7
Tel:
Fax:
Email:
Web:
+44 (0) 1244 670900
+44 (0) 1244 681330
info@siracertification.com
www.siracertification.com
Rake Lane, Eccleston, Chester, CH4 9JN, England
Sira Certification Service
The certification code that is appropriate to Purge Controllers low temperature version shall appear in
the product marking applied to outer stainless steel enclosure.
17.6
This certificate and its schedules may only be
reproduced in its entirety and without change.
The products covered by this certificate incorporate previously certified devices, it is therefore the
responsibility of the manufacturer to continually monitor the status of the certification associated with
these devices, and the manufacturer shall inform Sira of any modifications of the devices that may
impinge upon the explosion safety design of the products.
17.5
Where the HP is specified an overpressure shall be simulated whilst the MiniPurge Control Unit is
cycling, it shall be verified that the controller provides the appropriate output and resets.
Verification of Purging Overpressure protection
An air supply failure shall be simulated whilst the MiniPurge Control Unit is cycling, it shall be verified
that the controller provides the appropriate output and resets.
Verification of Air Supply Failure Protection
A purge failure shall be simulated whilst the MiniPurge Control Unit is cycling, it shall be verified that
the controller provides the appropriate output and resets.
Verification of Purge Failure Protection
An overpressure loss shall be simulated whilst the MiniPurge Control Unit is cycling, it shall be verified
that the controller provides the appropriate output and resets.
Verification of Minimum Overpressure Cut Off
The switches incorporated in the PA option shall be suitably certified for Category 2.
Sira 01ATEX1295X
Issue 8
17.3
EC TYPE-EXAMINATION CERTIFICATE
SCHEDULE
CERTIFICATION
EXPO Technologies Limited
Equipment:
Applicant:
Sheet
1 to 4
1 to 2
1 of 1
1 of 1
1 of 1
Rev.
3
2
1
1
1
Date
02 Jul 02
21 May 01
21 Sep 00
21 Sep 00
21 Sep 00
Sheet
1 of 1
Rev.
3
Date
Description
22 March 04 Low Temperature Housing - General Arrangement
Description
Certification label
Low temperature housing wiring certification drawing.
Sheet
1 of 1
1 of 1
1 of 1
1 of 1
1 of 1
1 of 1
1 of 1
1 of 1
1 of 1
1 of 1
1 of 1
1 of 1
1 of 1
1 of 1
1 of 1
1 of 1
1 of 1
1 of 1
1 of 1
1 of 1
1 to 2
1 to 2
Sheet
1 to 5
Rev.
02
03
02
02
02
02
02
03
03
02
02
02
02
01
01
01
01
02
01
04
06
03
Rev.
5
Date
15 Mar 07
09 Jul 07
15 Mar 07
15 Mar 07
15 Mar 07
15 Mar 07
15 Mar 07
15 Mar 07
15 Mar 07
15 Mar 07
15 Mar 07
15 Mar 07
15 Mar 07
15 Mar 07
15 Mar 07
18 Apr 07
27 Mar 07
15 Mar 07
25 Apr 07
15 Mar 07
20 Feb 07
20 Feb 07
Date
30 Aug 06
Form 9400 Issue 1
This certificate and its schedules may only be
reproduced in its entirety and without change.
Number
EP99-3-1
EP99-2-1
EP99-2-3
EP99-2-2
EP99-2-7
EP99-2-8
EP99-2-9
EP99-2-10
EP99-2-11
EP99-2-12
EP99-2-14
EP99-2-17
EP99-2-16
SD7533
SD7535
SD7536
SD7538
SD7449
SD7500
SD7448
SD7281
SD7282
Issue 4
Number
SD7281
Page 1 of 2
Tel:
Fax:
Email:
Web:
+44 (0) 1244 670900
+44 (0) 1244 681330
info@siracertification.com
www.siracertification.com
Rake Lane, Eccleston, Chester, CH4 9JN, England
Sira Certification Service
Description
Minipurge Control Unit – General Assembly
Schematic - Type x Leakage Compensation
Sequence Diagram - Type x Leakage Compensation
Schematic - Type x Continuous Flow
Schematic – Separate Supply and Mechanical Timer
Schematic – Delay Before Trip and On/Off
Schematic – Twin Output and Manual Override
Schematic – Pressure Control Leakage Compensation
Internal “IS” Switches
Schematic – Containment System and Secondary pressurisation
Schematic – Continuous Flow with 2 Flow Rates
Schematic – Continuous Flow with High Pressure
Schematic – Outlet Valve Control
Schematic – Dust Protection
Spark Arrestor
Differential Flow Monitor
Continuous Flow Outlet Orifice
Wiring Diagram – Low temperature
Outlet Orifice Closing Device
Low Temperature Housing
Certification Label Details
MiniPurge Data Sheet
Description
Certification label
Issue 3 (The drawings associated with this issue were replaced by those listed in Issue 4)
Number
Sheet
Rev.
Date
SD7281*
1 to 5
4
17 Dec 03
SD7449
1 of 1
1
18 Dec 03
* Modified by Sira 30 September 2004
Issue 2 (The drawings associated with this issue were replaced by those listed in Issue 4)
Number
SD7448
CERTIFICATION
Description
MiniPurge ATEX Certification Labelling
MiniPurge ATEX Certification Type Numbering Scheme
MiniPurge, Continuous Flow with /HP Sensor –Schematic diagram
RLV, outlet orifice
Outlet Valve Control Circuit Diagram
Issue 1 (The drawings associated with this issue were replaced by those listed in Issue 4)
Number
SD7281
SD7282
EP/99-2-17
EP99-7-7
EP99-7-9
Issue 0 (The drawings associated with this issue were replaced by those listed in Issue 4)
Sira 01ATEX1295X
Purge Controllers
Sub-MiniPurge, MiniPurge, Super-MiniPurge,
Super-MiniPurge 1800/3500/7000/7000X
Certificate Number:
Certificate Annexe
Sheets
1 to 3
Sheets
1 of 1
1&2
1 to 3
1 of 1
Sheets
1 to 2
1 to 2
1 of 1
1 of 1
Sheets
1 to 2
1 of 1
Rev.
10
Rev.
6
5
9
2
Rev.
8
4
2
2
Rev.
7
05
Form 9400 Issue 1
CERTIFICATION
Date (Sira stamp)
05 Oct 12
Date (Sira stamp)
23 Nov 11
23 Nov 11
23 Nov 11
23 Nov 11
Date (Sira stamp)
23 Dec 10
21 Dec 10
21 Dec 10
21 Dec 10
Page 2 of 2
Tel:
Fax:
Email:
Web:
+44 (0) 1244 670900
+44 (0) 1244 681330
info@siracertification.com
www.siracertification.com
Rake Lane, Eccleston, Chester, CH4 9JN, England
Sira Certification Service
Title
Minipurge Certification Label
Description
Minipurge Low Temperature Housing
Minipurge Data Sheets
Minipurge ATEX/IECEx Certification Label
Minipurge Dust Protection Schematic
Description
Minipurge ATEX/IECEx Certification Label
MiniPurge Data Sheet
MiniPurge electronic timer
MiniPurge HP sensor
Description
Minipurge ATEX/IECEx Certification Label
Minipurge Low temperature Housing
Description
Fault Evaluation
Outlet Valve Circuit N/O
Outlet Control Valve N/C
Schematic – Type Z or Y leakage compensation
Schematic Type Z or Y Continuous Flow
Sequence Diagram – Type X Continuous Flow
Schematic – Alarm only and Alarm Action Selector
Schematic – Door Switch Active Alarm and Alarm Cancel
RLV Configurations
Alternative Z&Y LC System
Alternative Z&Y LC System
Date (Sira stamp)
12 Feb 09
12 Feb 09
Date
20 Feb 07
15 Mar 07
15 Mar 07
09 Jul 07
15 Mar 07
15 Mar 07
15 Mar 07
15 Mar 07
05 Jul 07
09 Jul 07
09 Jul 07
This certificate and its schedules may only be
reproduced in its entirety and without change.
Number
SD7281
Issue 8
Number
SD7448
SD7282
SD7281
SD7533
Issue 7
Number
SD7281
SD7282
SD7913
SD7914
Issue 6
Number
SD7281
SD7448
Issue 5
Rev.
01
02
01
02
01
02
02
02
01
01
01
EXPO Technologies Limited
Applicant:
Sheet
1 to 3
1 of 2
2 of 2
1 of 1
1 of 1
1 of 1
1 of 1
1 of 1
1 to 4
1 of 2
2 of 2
Purge Controllers
Sub-MiniPurge, MiniPurge, Super-MiniPurge,
Super-MiniPurge 1800/3500/7000/7000X
Equipment:
Number
SD7537
EP99-7-9
EP99-7-9
SD7531
SD7532
EP99-2-4
EP99-2-5
EP99-2-6
SD7555
SD7556
SD7556
Sira 01ATEX1295X
Certificate Number:
Certificate Annexe
E190061
Print this page
Te rm s of Use
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© 2012 UL LLC
database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/show page.html?name=RFPW7.E190061&cc…
UL pe rm its the re production of the m aterial containe d in the O nline Ce rtification Dire ctory subje ct to the following conditions: 1.
The Guide Inform ation, De signs and/or Listings (file s) m ust be pre se nte d in the ir e ntire ty and in a non-m isle ading m anne r,
without any m anipulation of the data (or drawings). 2. The state m e nt "R e printe d from the O nline Ce rtifications Dire ctory with
pe rm ission from UL" m ust appe ar adjacent to the e x tracte d m ate rial. In addition, the re printe d m aterial m ust include a copyright
notice in the following form at: "© 2012 UL LLC".
The appearance of a com pany's nam e or product in this database doe s not in itse lf assure that products so ide ntifie d have be e n
m anufacture d unde r UL's Follow-Up Se rvice . O nly those products bearing the UL Mark should be conside re d to be Liste d and
cove re d unde r UL's Follow-Up Se rvice . Always look for the Mark on the product.
W he n the UL Le af Mark is on the product, or whe n the word "Environm e nt" is include d in the UL Mark , ple ase se arch the UL
Environm e nt database for additional inform ation re garding this product's ce rtification.
Q ue stions?
Last Update d on 2012-10-14
** - Inte rnal se rie s ide ntifie r, pre ce de s m ode l num be r, which m ay contain one or m ore characte rs.
Purge control accessory: Vent unit for use in hazardous (classifie d) locations, Mode l R LV followe d by 25, 36, 52, 75, 104, 125,
150, or 200, followe d by CS or SS, m ay be followe d by FS.
Type Z for use in hazardous (classifie d) locations, Mode ls** 1, 2, 3, 4, 5, 6 followe d by Z, followe d by CF, CFHP or LC, followe d by
BP, CS, PM, SS, m ay be followe d by AO , DS, DT, IS, MO , NO , PO , SS.
Type Y for use in hazardous (classifie d) locations, Mode l** 1, 2, 3, 4, 5, 6 or 7 followe d by Y, followe d by CF, CFHP or LC, followe d
by BP, CS, NM, PM, SS, m ay be followe d by AO , DS, DT, IS, MO , NO , PO , SS.
Purge control units, Type X for use in hazardous (classifie d) locations, Mode l** 1, 2, 3, 4, 5, 6 or 7 followe d by X, followe d by CF,
CFHP or LC, followe d by BP, CS, PM, SS, m ay be followe d by AO , DS, DT, IS, MO , PO , SS.
SUNBUR Y O N THAMES, SUR R EY TW 16 5DB UNITED KINGDO M
HANW O R TH R O AD
UNIT 2 THE SUMMIT
EXPO TECHNOLOGIES LIMITED
Se e General Inform ation for Purging and Pre ssurizing Controls and Acce ssorie s for Use in Hazardous Locations C e rtifie d for
Canada
Purging and Pressurizing Controls and Accessories for Use in Hazardous Locations
Certified for Canada
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RFPW7.E190061
Purging and Pressurizing Controls and Accessories for Use in Hazardous Locations
Certified for Canada
rizing11/7/12
Controls and Accessories for Use in Hazardous Locati…
1/1
E190061
Print this page
Te rm s of Use
Page Top
© 2012 UL LLC
database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/show page.html?name=RFPW.E190061&ccn…
UL pe rm its the re production of the m aterial containe d in the O nline Ce rtification Dire ctory subje ct to the following conditions: 1.
The Guide Inform ation, De signs and/or Listings (file s) m ust be pre se nte d in the ir e ntire ty and in a non-m isle ading m anne r,
without any m anipulation of the data (or drawings). 2. The state m e nt "R e printe d from the O nline Ce rtifications Dire ctory with
pe rm ission from UL" m ust appe ar adjacent to the e x tracte d m ate rial. In addition, the re printe d m aterial m ust include a copyright
notice in the following form at: "© 2012 UL LLC".
The appearance of a com pany's nam e or product in this database doe s not in itse lf assure that products so ide ntifie d have be e n
m anufacture d unde r UL's Follow-Up Se rvice . O nly those products bearing the UL Mark should be conside re d to be Liste d and
cove re d unde r UL's Follow-Up Se rvice . Always look for the Mark on the product.
W he n the UL Le af Mark is on the product, or whe n the word "Environm e nt" is include d in the UL Mark , ple ase se arch the UL
Environm e nt database for additional inform ation re garding this product's ce rtification.
Q ue stions?
Last Update d on 2012-10-14
** - Inte rnal se rie s ide ntifie r, pre ce de s m ode l num be r, which m ay contain one or m ore characte rs.
Purge control accessory: Vent unit for use in hazardous (classifie d) locations, Mode l R LV followe d by 25, 36, 52, 75, 104, 125,
150, or 200, followe d by CS or SS, m ay be followe d by FS.
Type Z for use in hazardous (classifie d) locations, Mode ls** 1, 2, 3, 4, 5, 6 followe d by Z, followe d by CF, CFHP or LC, followe d by
BP, CS, PM, SS, m ay be followe d by AO , DS, DT, IS, MO , NO , PO , SS.
Type Y for use in hazardous (classifie d) locations, Mode l** 1, 2, 3, 4, 5, 6 or 7 followe d by Y, followe d by CF, CFHP or LC, followe d
by BP, CS, NM, PM, SS, m ay be followe d by AO , DS, DT, IS, MO , NO , PO , SS.
Purge control units, Type X for use in hazardous (classifie d) locations, Mode l** 1, 2, 3, 4, 5, 6 or 7 followe d by X, followe d by CF,
CFHP or LC, followe d by BP, CS, PM, SS, m ay be followe d by AO , DS, DT, IS, MO , PO , SS.
SUNBUR Y O N THAMES, SUR R EY TW 16 5DB UNITED KINGDO M
HANW O R TH R O AD
UNIT 2 THE SUMMIT
EXPO TECHNOLOGIES LIMITED
Se e General Inform ation for Purging and Pre ssurizing Controls and Acce ssorie s for Use in Hazardous Locations
Purging and Pressurizing Controls and Accessories for Use in Hazardous Locations
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RFPW.E190061
Purging and Pressurizing Controls and Accessories for Use in Hazardous Locations
zing 11/7/12
Controls and Accessories for Use in Hazardous Locations
1/1
(1)
Declaration of Conformity.
(2)
Expo Technologies Document Number EXPO11ATEX1200X/3.
(3)
This declaration is issued for the electrical apparatus:
AGE-SW0Z-017 non- sparking switch
(4)
Manufacturer:
Expo Technologies Ltd
Unit 2, The Summit
Hanworth Road
Sunbury on Thames
TW16 5DB
(5)
This electrical apparatus and any acceptable variation thereto is specified in
the Annex to this certificate and the documents therein referred to.
(6)
This declaration and schedule confirms compliance of each unit with the
following standards:
EN 60079-0: 2009
EN 60079-18: 2009
General requirements
Encapsulation “m”
(7)
This apparatus fulfils all the requirements for Group II Category 3 equipment
in accordance with European Directive 94/9/EC.
(8)
The design is documented in Expo Technologies Technical Construction
File number 33182
(9)
The apparatus marking:
Ex m IIC T4 Gc
II 3 G
For and on behalf of Expo Technologies Ltd.
Sunbury on Thames, 14th October 2013.
Sarah Wickson
Certification Engineer
Page 1 of 2
Expo Technologies Ltd. Registered in England No2854600
David Baker
Certification Engineer
Expo Technologies Ltd
Unit 2, The Summit,
Hanworth Rd.
Sunbury on Thames,
Surrey. TW16 5DB
T +44 (0)20 8398 8011
F +44 (0)20 8398 8014
E info@expoworldwide.com
www.expoworldwide.com
Annex to Declaration of Conformity EXPO11ATEX1200X/3.
10
Description:
A pneumatically operated, hermetically sealed switch. The switch is
contained in an aluminium alloy 6082 block encapsulated with an epoxy
resin potting compound.
Ambient temperature range –20 C to + 55 C.
11
Switch data:
Maximum Voltage
Maximum Current
Humidity range
Pneumatic signal:
12
254Vac rms
0.7A
0% to 100% RH at 55C, condensing.
22 to 100 p.s.i. 1.5 – 7Barg.
Special conditions of safe use:
The unit shall be grounded using a cable lug and appropriate grounding wire. The
conductor shall be secured against loosening or twisting and that contact pressure
is permanently secured.
The circuit shall be protected by a suitable fuse or similar device.
13
Test Documentation
Description
General Arrangement
Reed switch data sheet
Test procedure
Doc. Ref.
AGE-SW0Z-017
2118502030
TP518-040-WD
Rev.
3
2
2
Revision History
Version
0
1
2
3
Date
12-Oct-2011
7-Jun-2012
27-Sep-2013
14-Oct-2013
Page 2 of 2
Expo Technologies Ltd. Registered in England No2854600
Comment
Initial issue of DoC
Maximum voltage modified from 230V to 254Vac rms
Manufacturer’s address updated
Rectification of anomalies in address
Expo Technologies Ltd
Unit 2, The Summit,
Hanworth Rd.
Sunbury on Thames,
Surrey. TW16 5DB
T +44 (0)20 8398 8011
F +44 (0)20 8398 8014
E info@expoworldwide.com
www.expoworldwide.com
Manufacturer’s Self Evaluation In
accordance with NFPA-70
National Electric Code Clause 500.8
Expo Technologies Ltd
Hanworth Road
Sunbury on Thames, TW16 5DB UK
The non-incendive switch AGE-SW0Z-017 Manufactured by Expo Technologies can be
marked for use in Class I division 2 hazardous location.
The switch contacts are formed of a reed switch which is a hermetically sealed contact. It
is therefore is suitable for use in Class I Division 2 Hazardous Location in accordance
with NFPA-70 clause 500.7 J Hermetically sealed.
NEC 501.105 B 1 Exception 2 Allows for hermetically sealed devices to be used as an
alternative to using a listed device. i.e. there is not a requirement for these to be listed .
Similarly 501.1.150 .2 exception 2 also permits hermetically sealed switch for use as
remote alarm.
The switch is marked with the voltage and current ration of the hermetically sealed
contacts and is marked as
V max
I max
P max
Non Incendive Circuit
254V AC
200V DC
1 Amp
70 W
For Intinsically safe circuits or the switch contact is simple apparatus as described in
NEC504.2 and used with control drawing EP-80-2.11
Similarly for non incendive circuits the switch is simple apparatus ( though also
hermetically sealed.).
Therefore the switch AGE-SW0Z-017 can be used as simple apparatus either in an
intrinsically safe circuit or in a non incendive circuit, or it can be used as a hermetically
sealed contact in a Class I Division2 Location within the ratings shown.
Signed
Managing Director
Date 7 June 2012
Confidential Assessment file reference SC020
V3 – 10 Jun 13
S:\Files\QA\CERTS\C-OF-C\SC020 V3 Non Incendive switch.doc
With
European
Directives
EC-Declaration of
Conformity
Expo Technologies Ltd
Unit 2, The Summit, Hanworth Road
Sunbury on Thames TW16 5DB, UK
This is to declare that
Purge Controllers Type “MiniPurge”
are manufactured in conformity with the following
European Directives and standards:
Electromagnetic Compatibility Directive 2004/108/EG
MiniPurge Systems with a /PO suffix in the type number are non-electrical and are outside the scope
of the EMC Directive.
MiniPurge Systems with suffices /PA or /IS incorporate one or more volt-free (“dry”) contacts which
work in circuits specified by others. In normal operation these circuits are “benign” and no CE mark is
appropriate.
MiniPurge Systems with Electronic Timer (Option /ET) are designed to conform to the EMC Directive,
in compliance with EN 61000-6-4:2007 and EN 61000-6-2:2005 (Intertek Report EM10048000).
Low Voltage Directive 2006/95/EC
MiniPurge Systems are intended for use in potentially explosive atmospheres (Hazardous Areas) and
are therefore excluded from the Low Voltage Directive.
Pressure Equipment Directive 97/23/EC
MiniPurge Systems are classified as not higher than category I under Article 9 of this Directive and
intended for use in potentially explosive atmospheres (Hazardous Areas) and are therefore excluded
from the Pressure Equipment Directive.
ATEX Directive 94/9/EC
MiniPurge Systems are designed to conform to the ATEX Directive, in compliance with:
EN 60079-0 : 2012 + A11:2013
EN 60079-2 : 2007
EN 61241-4 : 2006
MiniPurge Systems are certified by SIRA Certification Service, Rake Lane, Eccleston, Chester CH4 9JN,
England, under EC Type-Examination Certificate SIRA 01ATEX1295X, in compliance with:
IEC 60079-0 : 2011
EN 60079-2 : 2007
EN 61241-4 : 2006
According to the model, MiniPurge Systems are rated and shall be marked as follows:
MiniPurge, X & Y models
MiniPurge, Z models
Group II Category 2G & 2G
Group II Category 3G & 3D
II 2(2) GD
II 2(3) GD
MiniPurge systems are manufactured under Production Quality Assurance Notification
SIRA 99 ATEX M043, issued by SIRA Certification Service, Notified Body No 0518.
John Paul de Beer
Managing Director
S:\Files\QA\CERTS\C-OF-C\Minipurge CE SC004 Issue6.doc
Date 02/09/2014
Confidential Assessment file reference SC004
Expo Technologies Ltd.
Unit 2, The Summit
Hanworth Road
Sunbury on Thames
TW16 5DB
Tel
Fax
E-mail:
+ 44 (0) 20 8398 8011
+ 44 (0) 20 8398 8014
sales@expoworldwide.com
Expo Technologies Inc.
9140 Ravenna Road Unit #3
Twinsburg
OH 44087
USA
Tel:
Tel:
Fax:
E-mail:
+1 888-NFPA-496
+1 (440) 247 5314
+1 (330) 487 0611
sales.na@expoworldwide.com
www.expoworldwide.com