END USER MANUAL
SEM-SAFE® HIGH-PRESSURE WATER MIST PUMP UNIT
REVISION 4, MAY 2016
End User Manual
High-Pressure Water Mist Pump Unit
Revision 4, May 2016
Copyright 2016 by Danfoss Semco A/S.
All rights reserved. No part of this manual may be reproduced, distributed, or transmitted in any form or by
any means, including photocopying, recording, or other electronic or mechanical methods, without the prior
written permission of Danfoss Semco. For permission request, please contact us:
Danfoss Semco A/S
Middelfartvej 9, 5000 Odense C, Denmark
Tel.: +45 74 88 78 00
Fax: +45 74 88 78 01
E-mail: fireprotection@danfoss-semco.com
Web: www.danfoss-semco.com
Foreword
This End User Manual provides basic understanding as well as guidance for operation and
maintenance of the SEM-SAFE® High-Pressure Water Mist Pump Unit manufactured by Danfoss
Semco A/S. This manual is prepared for system owners and users of the SEM-SAFE® HighPressure Water Mist Pump Unit. If you encounter any problems with the system, please contact
Danfoss Semco A/S Service department (email: service@danfoss-semco.com).
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OPERATION AND MAINTENANCE OF HIGH PRESSURE WATER MIST PUMP UNIT
REVISION 4, MAY 2016
PAGE 3 / 48
Table of Contents
1
Introduction .................................................................................................................................7
Safety instructions for SEM-SAFE® pump unit ..................................................................7
1.1
1.1.1
General Safety instructions ..............................................................................................7
1.1.2
Workplace Safety.............................................................................................................7
1.1.3
Electrical Safety ...............................................................................................................7
1.1.4
Personal Safety ................................................................................................................8
1.1.5
Personal Safety Equipment ..............................................................................................8
1.2
Copyright, Confidentiality Statement and Trademark ........................................................8
1.3
Liability ...............................................................................................................................9
1.4
Health and safety .................................................................................................................9
1.5
Reservation clause .............................................................................................................10
2
System description ....................................................................................................................11
2.1
General system description ...............................................................................................11
2.2
General description of Wet Pipe Water Mist System ........................................................11
2.3
General description of Dry Pipe Water Mist System ........................................................11
2.4
General description of Pre-action Water Mist System ......................................................11
2.5
General description of Deluge Water Mist System ...........................................................12
3
Pump unit component description ............................................................................................12
3.1
Pump unit with unit tank ...................................................................................................12
3.2
Pump unit with supply manifold (without unit tank) ........................................................13
3.3
High-pressure pumps .........................................................................................................14
PAGE 4 / 48
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OPERATION AND MAINTENANCE OF HIGH PRESSURE WATER MIST PUMP UNIT
REVISION 4, MAY 2016
3.4
Electric motors ..................................................................................................................15
3.5
Pilot pump (optional in Land and Marine applications) ....................................................15
3.6
Unit without pilot pump (marine systems) ........................................................................15
3.7
Unit tank ............................................................................................................................15
3.8
Supply manifold ................................................................................................................16
3.9
High-pressure manifold .....................................................................................................17
3.10
Valves ...............................................................................................................................18
3.11
Pressure controlling and monitoring devices ....................................................................18
3.12
Filter system ......................................................................................................................19
3.13
Emergency back-up system ...............................................................................................20
3.14
Standard Unit Control Panel..............................................................................................21
3.14.1
Land application ............................................................................................................21
3.14.2
Marine application .........................................................................................................25
3.14.3
VdS Unit Control Panel .................................................................................................29
3.14.4
FM Global Unit Control Panel.......................................................................................32
4
Pump unit operation ..................................................................................................................34
4.1
Pump unit activation ..........................................................................................................34
4.2
Increasing discharge capacity in a fire situation................................................................34
4.3
Shut-down of pump unit after activation (fire suppression)..............................................34
4.4
Reestablishment of the SEM-SAFE® system after starting up ..........................................35
5
5.1
Pump unit maintenance .............................................................................................................36
Maintenance of land units according to CEA 4001 ..........................................................36
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PAGE 5 / 48
5.2
Maintenance according to FM Global ...............................................................................39
5.3
Maintenance according to VdS Schadenverhütung ...........................................................42
5.4
Maintenance of marine units according to MSC.1/Circ. 1432 ..........................................45
PAGE 6 / 48
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OPERATION AND MAINTENANCE OF HIGH PRESSURE WATER MIST PUMP UNIT
REVISION 4, MAY 2016
1
Introduction
Safety instructions for SEM-SAFE® pump unit
1.1
The SEM-SAFE® system is a high-pressure water mist system and consists of nozzles, pump unit,
section valves, piping system, etc. The SEM-SAFE® High-Pressure Water Mist Pump Unit and
system operates under high pressure and high voltage.
Care must be taken when operating the SEM-SAFE® High-Pressure Water Mist Pump Unit.
Installation, test, commissioning and service of the system is only to be carried out by appropriately
trained, competent personnel. It must be ensured that all relevant procedures are followed to the
satisfaction of the authority having jurisdiction, defined as organization, office, or individual
responsible for approving equipment, materials, an installation or a procedure.
1.1.1
General Safety instructions
WARNING
Read all safety instructions and instructions.
If the safety instructions and the instructions are not followed, there is a risk of electric shock and /
or serious injury.
Save all warnings and instructions for future use.
1.1.2
Workplace Safety
a) Make sure to keep the area around the pump unit free and clean. Disorder in the work area
increases the risk of accidents.
b) Make sure that other people and especially children are kept away from the pump unit when
the pump unit is operating.
1.1.3
Electrical Safety
a) The SEM-SAFE® pump unit is always connected to high voltage during standby and
operation.
b) The door on the Unit Control Panel should never be opened by anyone other than educated /
trained personnel as there is an increased risk of electric shock.
c) The main switch should always be switched off during replacement of electrical
components. If the main switch is not switched off there will be an increased risk of
electrical shock.
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PAGE 7 / 48
IMPORTANT. When the work is finished on the pump unit, the main switch
must be turned on again. If the main switch is not turned on, the SEM-SAFE® pump unit
will not activate if a fire occurs in the protected areas.
1.1.4
Personal Safety
a) Always use personal safety equipment (See chapter 1.1.5 Personal Safety Equipment).
Safety equipment will reduce personal injuries.
b) When replacing mechanical or electrical components on the pump unit, the main switch
should always be switched off. If this is not done, there will be an increased risk of injury.
IMPORTANT. When the work is finished on the pump unit, the main switch
must be turned on again. If the main switch is not turned on, the SEM-SAFE® pump unit
will not activate if a fire occurs in the protected areas.
1.1.5
Personal Safety Equipment
a) Persons staying in the area, during operation of the SEM-SAFE® pump unit must wear
hearing protection.
b) Persons who work with service and maintenance of SEM-SAFE® pump unit must wear hand
protection.
c) Persons who work with service and maintenance of SEM-SAFE® pump unit must wear
safety shoes.
1.2
Copyright, Confidentiality Statement and Trademark
This manual is the property of Danfoss Semco A/S, is confidential information and shall only be
used for carrying out operation and maintenance of the SEM-SAFE® High-Pressure Water Mist
Pump Unit. The manual shall not, in whole or in part, be reproduced, copied, disclosed or used as
the basis for manufacture, marketing or sale without the prior written permission of Danfoss Semco
A/S.
PAGE 8 / 48
END USER MANUAL
OPERATION AND MAINTENANCE OF HIGH PRESSURE WATER MIST PUMP UNIT
REVISION 4, MAY 2016
The content of this manual reflects the state of the art and experience at the time of issuing,
however, Danfoss Semco A/S will constantly improve systems, procedures and instructions.
Consequently, Danfoss Semco A/S will reserve the right to revise and improve this manual without
prior notification.
All trademarks in this manual are property of Danfoss Semco A/S. Danfoss Semco A/S logotype is
a registered trademark and is property of Danfoss Semco A/S. All rights reserved.
1.3
Liability
This manual is prepared for system owners, operators and occupants (hereinafter referred to as End
User) of the SEM-SAFE® High-Pressure Water Mist Pump Unit that will perform periodic
scheduled test and maintenance of the pump unit.Test and maintenance must be done according to
this manual, which specifies daily, weekly, monthly and annual check procedures. These tasks shall
be performed only by personnel who have developed competence through for example training and
experience. The pump unit must be serviced by an approved installer at least once per year.
The SEM-SAFE® High-Pressure Water Mist Pump Unit is intended for use only in accordance with
the instructions in this manual. Any use which is not consistent with the content of this manual is
considered incorrect. Operation and maintenance of the SEM-SAFE® High-Pressure Water Mist
Pump Unit shall be carried out in accordance with this manual. It is the responsibility of the End User
to ensure that requirements in this manual comply with applicable legislation in the area where the
SEM-SAFE® High-Pressure Water Mist Pump Unit is used.
The End User shall ensure that the fire risk has not changed after the system and thus the SEMSAFE® High-Pressure Water Mist Pump Unit was installed and the system / application became
operational. The End User shall also ensure that all necessary information is available and if any doubt
exists, it is the responsibility of the End User to verify with Danfoss Semco A/S.
Danfoss Semco A/S cannot be held responsible for SEM-SAFE® High-Pressure Water Mist Pump
Units that have not been operated, maintained or used in accordance with this manual.
1.4
Health and safety
Danfoss Semco A/S health and safety procedures and environmental policies according to OHSAS
18001, ISO 14001 and rules and regulations on the local territory shall be strictly followed.
Furthermore, it is the End User’s responsibility to ensure that territorial legislation and on-site
safety regulations are followed during operation and maintenance of the SEM-SAFE® HighPressure Water Mist Pump Unit.
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PAGE 9 / 48
1.5
Reservation clause
Danfoss Semco A/S can accept no responsibility for possible errors in catalogues, brochures and
other printed material.
Danfoss Semco A/S reserves the right to alter its products without notice. This also applies to
products already on order provided that such alterations can be made without subsequent changes
being necessary in specifications already agreed.
PAGE 10 / 48
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OPERATION AND MAINTENANCE OF HIGH PRESSURE WATER MIST PUMP UNIT
REVISION 4, MAY 2016
2
2.1
System description
General system description
The SEM SAFE® High-Pressure Water Mist System consists of nozzles, pipe work, section valves
and pump unit and can be classified as one of the following four different types of systems:
 Wet Pipe Water Mist System
 Dry Pipe Water Mist System
 Pre-action Water Mist System
 Deluge Water Mist System
The SEM SAFE® High-Pressure Water Mist Pump Unit can serve any combination of these four
systems.
2.2
General description of Wet Pipe Water Mist System
The wet system is a system using automatic nozzles attached to a piping system permanently filled
with water at maintained standby pressure. The system is activated when a thermal-sensitive glass
bulb in the automatic nozzle bursts, which is caused by an increase of the temperature at the nozzles
during fire. This creates a pressure drop in the system which activates the SEM SAFE® HighPressure Water Mist Pump Unit that immediately delivers water under high pressure to activated
water mist nozzle(s) located in the area of fire.
2.3
General description of Dry Pipe Water Mist System
Dry pipe water mist system is a system using automatic nozzles attached to piping system
containing air under standby pressure. Protected sections are separated from the supply sources by
dry pipe section valve(s). The system is activated when a thermal-sensitive glass bulb in the
automatic nozzle bursts, which is caused by an increase of the temperature at the nozzles during
fire. It allows the water pressure to open a dry pipe section valve. The water then flows into the
piping system and discharges through any activated water mist nozzles located in the area of fire.
2.4
General description of Pre-action Water Mist System
A pre-action water mist system is used where special precautions are required to avoid the water
mist being released unexpectedly in the protected rooms. It is using automatic nozzles attached to a
piping system containing air under standby pressure, with a supplemental detection system installed
in the same area at the water mist nozzles. The actuation of the detection system opens a valve that
allows water to flow into the piping system and discharge through any activated water mist nozzles.
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2.5
General description of Deluge Water Mist System
A deluge water mist system uses open (nonautomatic) nozzles attached to a piping system that is
connected to a high-pressure pump unit through a section valve which is opened by means of a
detection system installed in the same area as the water mist nozzles or manually. When the section
valve opens, water flows into the piping system and discharges through all water mist nozzles
attached to the system.
3
Pump unit component description
The SEM-SAFE® High-Pressure Water Mist Pump Unit is constructed in a modular design. It
consists of 1 to 8 electrically driven high-pressure pumps supplying a high-pressure manifold,
control panel (UCP), pilot pump (to maintain pressure in the system in stand-by mode) and pressure
and flow controlling devices. All assemblies are mounted on a common skid frame.
3.1
Pump unit with unit tank
During operation of the SEM-SAFE® High-Pressure Water Mist Pump Unit with unit tank, the water
from the unit tank is pressed from the pump through a non-return valve and into a common highpressure manifold. From there, water is discharged into sections of the protected area and reaches
water mist nozzles. The system pressure is regulated by a pressure relief valve, which is also a
dedicated safety valve, capable of bypassing the total capacity of the high-pressure pumps (when a
section valve or main valve is closed). The excess water from the valve is returned to the unit tank.
The picture below shows an example of a pump unit with the unit tank and water filter attached to
it. A detailed description of components is presented in the following chapters.
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Figure 1. SEM-SAFE® High-Pressure Water Mist Pump Unit with unit tank
3.2
Pump unit with supply manifold (without unit tank)
During operation of a SEM-SAFE® High-Pressure Water Mist Pump Unit with supply manifold
instead of unit tank, the water under low pressure (min. 1-3 bar) is delivered from an outside reservoir
into the supply manifold on the SEM-SAFE® High-Pressure Water Mist Pump Unit. Delivery is
performed either with the help of a booster pump between the reservoir and the supply manifold or
with the reservoir tank placed on a higher level than the SEM-SAFE® High-Pressure Water Mist
Pump Unit, ensuring positive water flow.
From the supply manifold, through the hoses, water is discharged into high-pressure pumps, which
are raising the water pressure to system pressure. Then, water under high pressure reaches the water
mist nozzles in protected areas.
The picture below shows an example of a SEM-SAFE® High-Pressure Water Mist Pump Unit with
the supply manifold. A detailed description of components is presented in the following chapters.
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Figure 2. SEM-SAFE® High-Pressure Water Mist Pump Unit with supply manifold
3.3
High-pressure pumps
The high-pressure pumps are stainless steel, water-lubricated
positive displacement pumps with multiple pistons mounted in a
rotating cylinder, which reduce ripple and pulsation in the
discharge water stream. A typical SEM-SAFE® High-Pressure
Water Mist Pump Unit consists of 1 to 8 electrically driven,
stainless-steel high-pressure pumps.
Figure 3. High-pressure pump
with electric motor
During SEM-SAFE® High-Pressure Water Mist Pump Unit
activation, high-pressure pumps are pumping water from the water
supply to the manifold, discharging it to sections of the protected
area.
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OPERATION AND MAINTENANCE OF HIGH PRESSURE WATER MIST PUMP UNIT
REVISION 4, MAY 2016
3.4
Electric motors
SEM-SAFE® High-Pressure Water Mist Pump Unit consists of 1 to 8 electric motors, each one
attached to a high-pressure pump.
3.5
Pilot pump (optional in Land and Marine applications)
Figure 4. Pilot pump
The function of the pilot pump is to establish and maintain a
pilot/standby pressure in the pipe system. The pilot pump will not
activate the SEM-SAFE® High-Pressure Water Mist Pump Unit. The
pilot pressure is set to a maximum 14 bar and minimum 10 bar and is
monitored by the system pressure transmitter.
3.6
Unit without pilot pump (marine systems)
A SEM-SAFE® High-Pressure Water Mist Pump Unit without pilot pump is started by signal from a
separate Fire Detection Panel, or manually from the Valve Operation Panel (VOP), Local Call
Points or from the Unit Control Panel (UCP) by operating the pump start button. These systems are
mainly dry pipe Local Application or Total Flooding Systems.
3.7
Unit tank
The unit tank is made of stainless steel grade AISI 316, the capacity of the tank is adapted to the
discharge capacity of the SEM-SAFE® High-Pressure Water Mist Pump Unit. As standard, the unit
tank capacities are 820l, but for large capacity units the tank capacity is 1200l. There is also
available a version of unit tank with capacity of 300l for special applications.)
One basic function of the unit tank is to establish an air gap between the supply source (public water
supply) and the water contained in the water mist system (backflow protection according to
standard DS/EN 1717). Its other function is supplying clean filtered water to the high-pressure
pumps and receiving surplus water from the pressure relief valve. Tank and pump skid must have
earth grounding.
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Example of unit tank automatic filling facilities for Land application:
Alarm Level
Function
L5: Alarm at too high a
level
Alarm shown in display, system failure relay is de-energized and
high level relay is energized.
L4: Stop filling level
De-energize filling solenoid valve.
L3: Tank filling level
Energize filling solenoid valve.
L2: Alarm at too low a level Activates alarm for low level in tank, shown in display, system
in tank
failure relay is de-energized and low level relay is energized.
L1: Low-low level in tank
Activates alarm in display, system failure relay is de-energized, all
high pressure pumps stopped.
Automatic pump restart at rising level in tank < 35cm
Figure 5. Example of unit tank
3.8
Supply manifold
The supply manifold delivers the water under low pressure (min. 1-3 bar) from the outside reservoir
into the SEM-SAFE® High-Pressure Water Mist Pump Unit. Delivery is performed either with the
help of a booster pump between the reservoir and the supply manifold or with the reservoir tank
placed on a higher level than the pump unit, ensuring positive water flow.
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Figure 6. Example of supply manifold
3.9
High-pressure manifold
The high-pressure manifold collects and discharges water pumped from the pilot pump (wet system)
or high-pressure pumps through the main valve into the water mist distribution pipe system. The
main components attached to the manifold are described in the following chapters.
Figure 7. Example of high-pressure manifold
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Figure 8. Main valve
3.10
Valves
Main valve
The main valve is used for isolating the high-pressure pump system
from the rest of pipe system during service and maintenance.
Test valve
The test valve is used for the following operations and pump start procedures during maintenance
and service:
Figure 9. Test valve





3.11
Relieving pressure on the high-pressure manifold
during maintenance and service operations
Test of pilot pump start and stop when pressure falls
High-pressure pump start when pressure falls, by 6 bar
pressure transmitter, by simulating system pressure
drop when the main valve is in the closed position
High-pressure start on falling pressure, 6 bar pressure
switch (back-up start) by simulating system pressure
drop when the main valve is in the closed position
Relieve pressure during manual start of high-pressure
pump(s)
Pressure controlling and monitoring devices
Figure 10. Example of
pressure relief valve
Pressure relief valve
The purpose of the pressure relief valve is to maintain the
system pressure at the desired pressure level at any given
discharge and to avoid over pressurization. It is done by
relieving surplus pumping capacity back to the unit tank and
thereby keeping the system pressure constant at the pre-set
level.
The standard SEM-SAFE® High-Pressure Water Mist Pump
Unit is provided with one pressure relief valve installed in each
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REVISION 4, MAY 2016
line between the high-pressure manifold and the high-pressure pump discharge gate. For VdS, FM
Global, and marine SEM-SAFE® High-Pressure Water Mist Pump Units, one single large capacity
pressure relief valve is used for the complete unit. The pressure relief valve is pre-set at the factory
acceptance test, and this setting should not be altered. Any service or repair of the valve should be
carried out by a service engineer.
System pressure transmitter
Figure 11. Pressure transmitter
The system pressure transmitter has the following functions:




Displaying the actual system pressure in the alarm
display on the Unit Control Panel (UCP)
Start of the pilot pump or re-charge of pressure level at
system pressure of ca. <10bar
Stop of the pilot pump at system pressure of ca. >14bar
(Land applications) or ca. >12bar (Marine applications)
Initiating the high-pressure pump start sequence at
pressure level of less than 6bar (Land application) or
less than 10bar for more than 10 seconds (Marine
application)
The system pressure transmitter is monitored for wire break and short circuit. Wire break in the
cabling will not cause pump start.
Pressure switch
The 6 bar pressure switch is back-up for the system pressure transmitter used in Land applications
in order to secure monitoring of the system pressure, in case the system pressure transmitter has a
malfunction. The 6 bar pressure switch will activate the high-pressure pump starting sequence if
pressure is below 6 bar. A leak alarm is initiated if the pilot pump starts more than 2 times within 5
minutes
3.12
Filter system
In order to avoid contamination, clogging of water mist nozzles and malfunction of pumps and
valves, the extinguishing water has to be filtered before it is delivered into the SEM-SAFE® HighPressure Water Mist Pump Unit. On pump units with a unit tank, the filter is mounted before the
water supply reaches the tank. On pump units with a supply manifold, the filter is mounted before
the water supply reaches the supply manifold, under condition that it is going through the booster
pump beforehand. If there is no booster pump, the filter must be placed before the reservoir tank.
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The required grade of filtration is 10µmeter. The ΔP across the filter cartridge should be limited to
1.5bar. Minimum water supply pressure through the filter system should not be less than 2.5bar and
max. 5.4bar.
Figure 12. Filters
3.13
Emergency back-up system
In case of loss of power from the main supply and pressure drop under 5bar, the emergency back-up
system (cylinder unit) shall be capable of supplying the required pressure to the most remote nozzle in
the system, until emergency power is available for the pumping system, or not less than 1 minute of
operation. The capacity of the emergency back-up system shall contain the amount of water (H2O) to
cover the largest section of nozzles for 1
minute at the design pressure.
Figure 12. Emergency back-up system – N2 cylinders
Nitrogen (N2) is used as prime mover of the
water for immediate operation in case of
pressure drop and power failure in a fire
situation. The (N2) is supplied in standard gas
cylinders at a filling pressure of about 200bar.
A pressure regulating device is mounted on the
(N2) cylinder bank in order to maintain the
system pressure at its pre-set value.
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REVISION 4, MAY 2016
3.14
Standard Unit Control Panel
The Unit Control Panel constantly monitors the function of the SEM-SAFE® High-Pressure Water
Mist Pump Unit. It controls power and water supply for failure as well as monitors alarm and
system status. It informs of any failure and which parts of the unit are working during activation of
the system.
3.14.1
Land application
Figure 13. Example of Unit Control Panel for Land applications
A functional description of buttons, lamps and switches placed on the unit control panel is presented
below. Please note that this is a description of unit control panel including all options, and your
SEM-SAFE® High-Pressure Water Mist Pump Unit might not contain all of them.
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Button/Lamp/Switch
Description
Amp. meter
Displays the value of electric current (ampere) used by the Unit Control
Panel.
Lamp test
Press this button if you need to check if all lamps on the Unit Control
Panel are functioning properly. When pressed, all lamps will turn on. If
they do not, you should check the bulbs and wiring of lamps.
System (unit) start
Button for manual start of the SEM-SAFE® High-Pressure Water Mist
Pump Unit. By pressing the button, the first pump on the unit will start.
Then the unit will automatically control the pressure level and turn on
additional high-pressure pumps if required.
Lamp which indicates that an error/failure occurred in the SEM-SAFE®
System error light
High-Pressure Water Mist Pump Unit. When it is ON, a description of
and system reset error
the failure appears on the Alarm Display. After the error is solved, the
switch
system may be reset by using the system reset error switch.
HP pump 1-8 running
Lamp which turns on when a specific high-pressure pump on the SEMSAFE® High-Pressure Water Mist Pump Unit is running. There is a
separate lamp for each high-pressure pump.
Power supply main
switch
Switch used to turn on and off the power supply to the Unit Control
Panel.
Emergency stop push
button
Push button for emergency stop of the SEM-SAFE® High-Pressure
Water Mist Pump Unit.
Volt meter
Displays the value of electric potential (Volt) of the Unit Control Panel.
Volt meter selector
switch
Switch for manual selection of the electric potential value.
Buzzer
Audio alarm in case of error/failure.
Mute buzzer
Button for manual mute of buzzer.
HP pump 1-8
emergency start key
switch
Emergency switch for each pump in case of error/failure on the SEMSAFE® High-Pressure Water Mist Pump Unit. Each switch can be turned
on with the key placed in the bag inside the cabinet.
Alarm and status
display
Description of alarm that occurred. It appears when the System error
light is on. Please see the list of alarms below.
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System ready
Lamp is turned on when the SEM-SAFE® High-Pressure Water Mist
Pump Unit is ready to run. It indicates normal stand-by operation when
the supply is turned on.
Akku on/off
Switch for turning on and off the 24V battery supply (UPS) placed in the
cabinet. By default, the Akku switch is turned on.
Supply on
Power supply for the SEM-SAFE® High-Pressure Water Mist Pump Unit
is turned on.
Booster pump
Optional button, for when there is a need to raise inlet pressure.
Normally it is a function performed automatically, with no need for the
button.
Release section
Buttons for manual opening of section valves in the system. Each valve
has its own button.
Close section
Switches for manual closing of section valves in the system. Each valve
has its own button.
Flow SILO display
Display showing which section valves are open. Each valve is
represented by one light.
Auto / Auto off
Switch which is turned on by default, indicating that the SEM-SAFE®
High-Pressure Water Mist Pump Unit should start automatically. If
required, it can be switched off.
Alarm display on UCP
In ready mode, without any alarm, the display shows the unit tank level (for the SEM-SAFE® HighPressure Water Mist Pump Unit with unit tank) and actual pressure on the manifold (pilot pressure).
In alarm mode, the display shows the latest alarm raised. When the alarm is rectified, this alarm is
reset by pressing the reset button on the Unit Control Panel. The next unsolved alarm will appear on
the display until solved. For pressure and level indication in the alarm condition, press and hold the
reset push button.
END USER MANUAL
OPERATION AND MAINTENANCE OF HIGH PRESSURE WATER MIST PUMP UNIT
REVISION 4, MAY 2016
PAGE 23 / 48
Figure 14. Alarm display
Examples of alarms in the Alarm display on the Unit Control Panel are listed below.
Alarms
Power supply phase error
Control circuit error on HP 1-8
HP 1-8 phase error
Main or test valve not fully open or closed
Pilot pump phase error
System failure repeat alarm
24V DC pilot voltage supply error
High level in unit tank
Low level in unit tank
System activated
Emergency stop activated
Wire break error on system pressure transmitter,
pressure switch, main and test valve
Note:
Refer to the DIOMA (Design Installation Operation Maintenance Approval) manual for your
system received from Danfoss Semco A/S to see a complete list of alarms, their meaning and ways
to solve the problem.
PAGE 24 / 48
END USER MANUAL
OPERATION AND MAINTENANCE OF HIGH PRESSURE WATER MIST PUMP UNIT
REVISION 4, MAY 2016
3.14.2
Marine application
Figure 15. Example of Unit Control Panel for Marine applications
A functional description of buttons, lamps and switches placed on the unit control panel is presented
below. Please note that this is a description of unit control panel including all options, and your
SEM-SAFE® High-Pressure Water Mist Pump Unit might not contain all of them.
Button/Lamp/Switch
Description
System ready
Lamp is turned on when the SEM-SAFE® High-Pressure Water Mist
Pump Unit is ready to run. It indicates normal stand-by operation
when supply is turned on.
Main power
Button for manual start of main supply. Should be used if
lamp ‘System ready’ is not turned on.
Control power
Controlling if circuits in UCP are working properly. If lamp is on, it
means that control of circuits is turned on. If it is off, system is not
ready to run (System ready lamp is off).
END USER MANUAL
OPERATION AND MAINTENANCE OF HIGH PRESSURE WATER MIST PUMP UNIT
REVISION 4, MAY 2016
PAGE 25 / 48
Supply switch board
Lamp which indicates that the SEM-SAFE® High-Pressure Water Mist
Pump Unit is connected to supply. Lamp should be turned on at all
times during operation.
Emergency supply
switchboard
Lamp which indicates that the SEM-SAFE® High-Pressure Water Mist
Pump Unit is connected to the emergency supply. Lamp should be
turned on at all times during operation.
System (unit) start
Button for manual start of the SEM-SAFE® High-Pressure Water Mist
Pump Unit. By pressing the button, the first pump on the unit will start.
Then the SEM-SAFE® High-Pressure Water Mist Pump Unit will
automatically control the pressure level and turn on additional highpressure pumps if required.
HP pumps 1-8 running
Lamps which turn on when a specific high-pressure pump on the SEMSAFE® High-Pressure Water Mist Pump Unit is running. There is a
separate lamp for each high-pressure pump.
Standby pump running
Lamp which turns on when the standby high-pressure pump on the
SEM-SAFE® High-Pressure Water Mist Pump Unit is running.
Lock
Used for locking main door of UCP.
System pressure
display
System pressure display shows the pressure level in the system and
controls the work of the pilot pump. It consists of 4 digits display and 2
relay indicators in a 14-segment LED display.
Emergency power
Switch for manual start of emergency supply.
Fault from foam unit
(optional)
Indicates the failure in the SEM-SAFE® High-Pressure Water Mist
Pump Unit from the foam unit.
System stop
Button for manual stop of the SEM-SAFE® High-Pressure Water Mist
Pump Unit.
Release section
Buttons for manual opening of section valves in the system. Each valve
has its own button.
Close section
Switches for manual closing of section valves in the system. Each valve
has its own button.
Flow SILO display
Display showing which actuator valves are open. Each valve is
represented by one light.
PAGE 26 / 48
END USER MANUAL
OPERATION AND MAINTENANCE OF HIGH PRESSURE WATER MIST PUMP UNIT
REVISION 4, MAY 2016
Water filling
Lamp indicating that the unit tank is being filled with water (in case of
too low a water level – please refer to unit tank alarms).
Lamp test
Press this button if you need to check if all lamps on the Unit Control
Panel are functioning properly. When pressed, all lamps will turn on. If
they do not, you should check the bulbs and wiring of lamps.
Emergency stop push
button
Push button for emergency stop of the SEM-SAFE® High-Pressure
Water Mist Pump Unit.
Alarm panel
Displays failures which may occur. Please see below.
Displays for how many hours the SEM-SAFE® High-Pressure Water
Mist Pump Unit has been working (during operation or service).
Hour meter
Alarm panel on UCP
The alarm panel on the Unit Control Panel for marine application is equipped with 8 LED lamps
marked 1 to 8 which indicate the condition of alarm for individual functions and 2 lamps indicating
contact output. In ready mode with power on and no alarm initiated, LED lamps on the alarm panel
will light green which means that auxiliary voltage is connected and the processor is active.
When an alarm condition occurs, LED lamps for the particular function will flash with red light or,
only in the case of cable failure, with yellow light. Alarm indicators are reset using the “LAMP
RESET” push-button. If more than one alarm occurs, and the “LAMP RESET” push-button is not
activated, the first alarm LED lamp will flash ahead of others.
END USER MANUAL
OPERATION AND MAINTENANCE OF HIGH PRESSURE WATER MIST PUMP UNIT
REVISION 4, MAY 2016
PAGE 27 / 48
Figure 16. Alarm panel
The following alarms are displayed on the alarm panel after a 1 to 10-second delay:
Alarms
1: PUMP FAULT
5: spare
2: EMERGENCY STOP activated
6: SYSTEM STARTED
3: LOW LOW LEVEL in unit tank
7: MAIN VALVE NOT OPEN
4: spare
8: opt FW PUMP FAULT
Note:
Refer to the DIOMA (Design Installation Operation Maintenance Approval) manual for your
system received from Danfoss Semco A/S to see a complete list of alarms, their meaning and ways
to solve the problem.
PAGE 28 / 48
END USER MANUAL
OPERATION AND MAINTENANCE OF HIGH PRESSURE WATER MIST PUMP UNIT
REVISION 4, MAY 2016
3.14.3
VdS Unit Control Panel
Figure 17. Example of VdS Unit Control Panel
A Functional description of buttons, lamps and switches placed on the unit control panel is
presented below. Please note that this is a description of unit control panel including all options, and
your SEM-SAFE® High-Pressure Water Mist Pump Unit might not contain all of them.
Button/Lamp/Switch
Description
Amp. meter
Displays the value of electric current (ampere) used by the Unit
Control Panel.
Lamp test
Press this button if you need to check if all lamps on the Unit
Control Panel are functioning properly. When pressed, all lamps
will turn on. If they do not, you should check the bulbs and
wiring of lamps.
System ready
Lamp is turned on when the SEM-SAFE® High-Pressure Water
Mist Pump Unit is ready to run. It indicates normal stand-by
operation when supply is turned on.
END USER MANUAL
OPERATION AND MAINTENANCE OF HIGH PRESSURE WATER MIST PUMP UNIT
REVISION 4, MAY 2016
PAGE 29 / 48
System error light and
system reset error switch
Lamp which indicates that an error/failure occurred in the SEMSAFE® High-Pressure Water Mist Pump Unit. When it is ON,
description of the failure appears on the Alarm Display. After the
error is solved, the system may be reset using the system reset
error switch.
HP pump 1-3 running lamp
Lamp which turns on when a specific high-pressure pump on the
SEM-SAFE® High-Pressure Water Mist Pump Unit is running.
There is a separate lamp for each high-pressure pump.
Main switch
Turn on power supply
Pump 1-3 emergency start
key switch
Emergency switch for each pump in case of error/failure on
SEM-SAFE® High-Pressure Water Mist Pump Unit. Each switch
can be turned on with the key placed in the bag inside the
cabinet.
Volt meter
Displays the value of electric potential (Volt) of Unit Control
Panel.
Volt meter selector switch
Switch for manual selection of electric potential value.
Buzzer
Audio alarm in case of error/failure.
Mute buzzer
Button for manual mute of buzzer.
Start (unit) start
Button for manual start of the SEM-SAFE® High-Pressure Water
Mist Pump Unit. By pressing the button, the first pump on the
unit will start. Then the unit will automatically control the
pressure level and turn on additional high-pressure pumps if
required.
Akku on/off
Switch turns on and off the 24V battery supply (UPS) placed in
the cabinet. By default, the Akku switch is turned on.
System pressure below 6
bar
Yellow lamp which turns on during normal operation when
pressure in the system drops below 6 bar and the high-pressure
pump starts working.
Disabled below 6 bar
Blue lamp which turns on during service of the SEM-SAFE®
High-Pressure Water Mist Pump Unit in order to let the service
technician know that automatic start of the high-pressure pump
after pressure drops below 6 bar is disabled.
HP pump 1-3 fault
If the failure occurred on the high-pressure pump, the lamp turns
yellow.
PAGE 30 / 48
END USER MANUAL
OPERATION AND MAINTENANCE OF HIGH PRESSURE WATER MIST PUMP UNIT
REVISION 4, MAY 2016
Emergency stop push
button
Push button for emergency stop of the SEM-SAFE® HighPressure Water Mist Pump Unit.
Alarm and status display
Description of alarm that occurred. It appears when the System
error light is on. Please see the list of alarms below.
Alarm display on UCP
In ready mode without any alarm, the display shows the unit tank level (for SEM-SAFE® HighPressure Water Mist Pump Unit with unit tank) and actual pressure on the manifold (pilot pressure).
In alarm mode, the display shows the latest alarm raised. When the alarm is rectified, this alarm is
reset using the reset button on the Unit Control Panel. The next unsolved alarm will appear on the
display until solved. For pressure and level indication in alarm condition, press and hold the reset
push button.
Figure 18. Alarm display
Examples of alarms in the Alarm display on the Unit Control Panel are listed below.
Alarms
Power supply phase error
Control circuit error on HP 1-4
HP 1-4 phase error
Main or test valve not fully open or closed
Pilot pump phase error
System failure repeat alarm
24V DC pilot voltage supply error
High level in unit tank
END USER MANUAL
OPERATION AND MAINTENANCE OF HIGH PRESSURE WATER MIST PUMP UNIT
REVISION 4, MAY 2016
PAGE 31 / 48
Low level in unit tank
System activated
Emergency stop activated
Wire break error on system pressure transmitter,
pressure switch, main and test valve
Note:
Refer to the DIOMA (Design Installation Operation Maintenance Approval) manual for your
system received from Danfoss Semco A/S to see a complete list of alarms, their meaning and ways
to solve the problem.
3.14.4
FM Global Unit Control Panel
The FM Global SEM-SAFE® High-Pressure Water Mist Pump Unit is designed differently to all
other pump units produced by Danfoss Semco A/S. It has a separate Unit Control Panel for each
high-pressure pump. Please see example of the complete FM Global SEM-SAFE® High-Pressure
Water Mist Pump Unit below.
Figure 19. FM Global High-Pressure Pump Unit with 4 HP pumps
PAGE 32 / 48
END USER MANUAL
OPERATION AND MAINTENANCE OF HIGH PRESSURE WATER MIST PUMP UNIT
REVISION 4, MAY 2016
Functional description of buttons, lamps and switches placed on the unit control panel is presented
below.
Figure 20. Example of an FM Global Unit Control Panel
Button/Lamp/Switch
Description
Buzzer
Unit start
Unit stop
Main switch
Emergency start handle
Alarm and status display
Audio alarm in case of error/failure.
Button for manual start of the unit.
Button for manual stop of the unit.
Switch for turning on power supply
Handle for emergency start of the unit
Description of alarm that occurred.
END USER MANUAL
OPERATION AND MAINTENANCE OF HIGH PRESSURE WATER MIST PUMP UNIT
REVISION 4, MAY 2016
PAGE 33 / 48
4
4.1
Pump unit operation
Pump unit activation
With the SEM-SAFE® High-Pressure Water Mist Pump Unit in stand-by mode (pilot pressure
maintained at 10-14 bar), activation of one or more water mist nozzles causes a sharp pressure drop
in the system. The pressure drop and increasing water demand is monitored by the system pressure
transmitter which at pressure below 6 bar creates a start signal initiating the high-pressure pump’s
start sequence.
The system will not activate in the case of an error on the cable to the pressure transmitter. In case
of short circuit or wire break on the pressure transmitter, the back-up pressure switch initiates the
pump start sequence.
The high-pressure pump start sequence can be also initiated manually by pressing the “Pump start”
push button placed on the Unit Control Panel front. Then the sequence is initiated as for an automatic
start. The high-pressure pumps can also be individually started at the Unit Control Panel by operating
the dedicated key switch located in the Unit Control Panel front.
4.2
Increasing discharge capacity in a fire situation
Activation of more nozzles and thereby increasing water demand is monitored by the system
pressure transmitter. If system pressure drops below 100 bar for 5 sec., the next high-pressure pump
in the start sequence is started and is adding its capacity to the pump unit discharge capacity. The
same procedure is used for the remaining number of pumps in the start sequence until the design
capacity has been achieved.
If the pressure has been above 100 bar for more than 10 minutes, the last started high-pressure
pump is stopped automatically, but re-started again if the pressure is below 100 bar for 5 sec. The
first started high-pressure pump can only be stopped by activating the emergency stop push button.
4.3
Shut-down of pump unit after activation (fire suppression)
SEM-SAFE® High-Pressure Water Mist Pump Unit will operate until it is stopped manually. Stop of
the pump unit after activation shall only be ordered by the responsible leader of the firefighting
team. The SEM-SAFE® High-Pressure Water Mist Pump Unit should only be stopped by the direct
orders of the fire brigade commander.
PAGE 34 / 48
END USER MANUAL
OPERATION AND MAINTENANCE OF HIGH PRESSURE WATER MIST PUMP UNIT
REVISION 4, MAY 2016
The high-pressure pumps are stopped by activation of the emergency stop push button, the zone
struck by fire shall be isolated at the section valve, and the pump system shall be re-established in
order to serve sections other than the section struck by fire.
4.4
Reestablishment of the SEM-SAFE® system after starting up
If the system has been activated, the following procedure must be followed to bring the system back to
the ready state.
1. The nozzle(s) which is/are released are to be changed. This is done after closing the section
valve for the section concerned.
2. After mounting new nozzles, the section where the release has taken place is to be pressuretested with operation pressure to secure that the system is tight. In practice, this is done by reopening the section valve for the section concerned and letting the high-pressure pumps, which
are still running, raise the pressure in the section. When the section concerned has been repressurized, the section valve is closed again and the total system is de-pressurised by means of
the relieve button.
3. The section concerned is now the only one pressurised to operational pressure. Please observe
whether the pressure in this section is falling – this would indicate a leakage. If not, the section
is ready for stand-by operation. The replaced nozzles are checked for leakages. Finally, the
section valve is re-opened.
4. By a release of the system (i.e. all sections have been pressurized), in order to bring the system
back to normal operation procedure (stand-by function), the system is to be de-pressurized
using the “Relieve System” button.
The “Relieve System” button functions as follows:
1. All high-pressure pumps are stopped.
2. The by-pass valves on the pump unit and main risers are opened until the pressure drops to 12
bars.
3. System alarms are reset.
4. High-pressure pump stop is deactivated.
After this procedure, the system is back at stand-by function and ready to start up again should it be
necessary.
END USER MANUAL
OPERATION AND MAINTENANCE OF HIGH PRESSURE WATER MIST PUMP UNIT
REVISION 4, MAY 2016
PAGE 35 / 48
In case it is necessary to get the system in stand-by position before this mentioned time period, it will
be possible, after having activated the “Relieve System” button, to manually activate the test valve
on the Pump Unit. The procedure will then only take a few minutes.
In case a new fire should start during the resetting period, please note that the system can
always be manually released by activating the “pump start” button on the Unit Control Panel
placed at the pump unit.
5
Pump unit maintenance
5.1
Maintenance of land units according to CEA 4001
To maintain operational readiness of the SEM-SAFE® High-Pressure Water Mist Pump Unit,
regular inspections and repairs shall be carried out. This section describes the minimum measures to
be taken and the parties responsible for carrying them out.
If required by the authorities having jurisdiction, the user shall have required inspections carried out
under contract by the system installer or a similarly certified company.
Each routine of the schedule shall be carried out by a competent person who shall provide the user
with a signed, dated report of the inspection and advice of any rectification carried out or needed,
and advice of any external factors, which may have affected the result. The user of this manual must
ensure that periodical inspections are performed.
According to CEA 4001 standard, following routine maintenance procedures has to be carried out:
1.
2.
3.
4.
5.
Weekly routine according to CEA4001 §18.3.2
Quarterly routine according to CEA4001 §18.4.2
Half yearly routine according to CEA4001 §18.4.3
Yearly routine according to CEA4001 §18.4.4
Three years and five years inspection according to CEA4001 §18.4.5 & §18.4.6
The main inspection tasks are listed below, but be aware that you need to follow the procedures
listed in the main manual DIOMA (Design Installation Operation Maintenance Approval manual)
for your system received from Danfoss Semco.
Each part of the weekly routine shall be carried out at intervals of not more than 7 days.
PAGE 36 / 48
END USER MANUAL
OPERATION AND MAINTENANCE OF HIGH PRESSURE WATER MIST PUMP UNIT
REVISION 4, MAY 2016
The following shall be checked and recorded:
Weekly routine
1
The fill levels of water tanks (storage tanks, reduced capacity tanks, ground and elevated
tanks and break water tank).
2
System standby pressure.
3
Functionality of heating equipment (during heating period) in the water mist equipment
room, for wet pipe systems if installed etc.
4
Automatic pump starting test.
5
No errors indicated on the pump unit motor control panel.
6
No leakage from the pump unit.
7
The correct operational position of the main and test valves.
8
The alarm horn and flash light shall be operated for not less than 30 seconds.
9
Connection between the alarm switch and the ABA control station.
10
Connection from the the ABA control station to the fire brigade shall be checked. Note: The
procedure shall be agreed with the alarm signal recipient.
In addition to the weekly routine checks, the below mentioned checks and inspections shall be
carried out at intervals of not more than 13 weeks.
Quarterly routine
1
Stop valves
All stop valves on the water mist pump unit shall be checked for
good working order, and re-established in the operational position.
Check and confirm filling level and alarm levels

2
Automatic filling of
unit tank




L5: Alarm at too high a level: alarm shown in display,
system failure relay de-energized and high level relay
energized.
L4: Stop filling level: de-energize filling solenoid valve.
L3: Tank filling level: energize filling solenoid valve.
L2: Alarm at too low a level in tank: Activates alarm for low
level in tank, shown in display, system failure relay is deenergized and low level relay is energized.
L1: Low-low level in tank: Activates alarm in display,
system failure relay is de-energized, all high-pressure pumps
stopped.
END USER MANUAL
OPERATION AND MAINTENANCE OF HIGH PRESSURE WATER MIST PUMP UNIT
REVISION 4, MAY 2016
PAGE 37 / 48
Change to alternative supply if any, run pump start sequence as in
weekly test. Confirm all functions and alarms.
3
Electrical supplies
Any secondary electrical supply from diesel generators shall be
checked for satisfactory operation.
4
Review of hazard
The effect of any changes of structure, occupancy, storage
configuration, heating, lighting, or equipment etc. of a building on
hazard classification or installation shall be identified in order to
that the appropriate modification may be carried out.
5
Replacement parts
Replacement parts held as spare shall be checked for number and
condition.
6
Control of fire and
remote alarm
central
Check connection of cable and conduit between UCP and remote
alarm control panel, release actual alarms from UCP and confirm
receipt of alarms with remote control panel. Make “pump running”
signal and check that the alarm is received by the fire department.
In addition to the quarterly routine checks, the below mentioned checks and inspections shall be
carried out at intervals of not more than 6 months.
Half-yearly inspection
Check continuity of cables and wires connections
between UCP and remote alarm central, raise actual
alarms from the UCP and acknowledge reception of the
alarms at the remote alarm central.
1
Fire brigade and remote central
alarm check
2
Raise the pump running signal, check that the alarm is received at the fire brigade.
In addition to the weekly routine checks, the below mentioned inspections shall be carried out at
intervals of not more than 12 months by a Danfoss Semco approved service company.
PAGE 38 / 48
END USER MANUAL
OPERATION AND MAINTENANCE OF HIGH PRESSURE WATER MIST PUMP UNIT
REVISION 4, MAY 2016
Yearly inspection
Automatic pump flow test
Each water supply pump in the installation shall be
tested at the full load condition (by means of the test line
connection coupled to the pump delivery branch
downstream of the outlet back pressure valve) and shall
provide the minimum system pressure and flow values
stated on the name plate.
2
Back up batteries for Logic
relay in UCP
Batteries supplying the logic relay in the unit control
panel shall be inspected and checked for capacity (24
VDC). At capacity below 80%, the batteries shall be
replaced.
3
Water inlet supply filters
Check and inspect water inlet filters clean filter housing
and replace filter element if contaminated
4
Float valves on storage tanks
Check and exercise all float valves for proper function
and corrosion, repair or replace as necessary
1
5.2
Maintenance according to FM Global
The system installer/supplier shall provide the operator with instructions on the control of the
system to be carried out. This includes action to be taken in respect of faults and operation of the
system, with particular mention of the procedures for emergency manual starting of SEM-SAFE®
High-Pressure Water Mist Pump Unit, and details of weekly control as described in the following
section.
In the case of installations without any extra restrictions or obligations set out in the building
permit:



Inspected by the relevant authority at least once a year.
Being subject to the conclusion of a servicing contract with an approved installer.
Being subject to appropriate organisational measures.
The daily and weekly controls may be adjusted accordingly and by agreement with the relevant
authority.
Daily controls shall be carried out on all weekdays.
END USER MANUAL
OPERATION AND MAINTENANCE OF HIGH PRESSURE WATER MIST PUMP UNIT
REVISION 4, MAY 2016
PAGE 39 / 48
For systems where operational status is monitored automatically, daily controls are not necessary.
For monitored systems, the daily inspection can be deleted and the daily test carried out together
with the weekly routine that shall be carried out at intervals of not more than 7 days.
The following shall be checked and recorded:
Daily/weekly inspection
1
The fill level of the unit tank.
2
Unit standby pressure.
3
No errors indicated on the pump unit UCP.
4
No leakage from the pump unit.
5
Start the high-pressure pump unit by simulated pressure drop. Check the correct operational
position of unit’s main stop and test valves when inspection is finished.
In addition to the weekly programme, the following shall be controlled and recorded at intervals of
not more than 30 days:
Monthly Controls
1
Check condition of unit gauges (mechanical) and that normal system pressures are being
maintained.
2
Function control of refill equipment for unit tank.
3
Visual control of unit filters; clean or replace as necessary.
4
Conduct visual control of pipe work, nozzles and pipe hangers
In addition to the monthly programme, the following shall be controlled and recorded at intervals of
not more than 3 months:
Quarterly Controls
1
Carry out the weekly test program.
2
Test audible and visual alarm devices supplied from the unit.
3
Check all water flow alarm valves with regard to flow and alarm transmission to alarm panel
Each routine of the quarterly schedule shall be carried out by a competent person of the approved
installer who shall provide the operator with a signed and dated report of the inspection, advise any
PAGE 40 / 48
END USER MANUAL
OPERATION AND MAINTENANCE OF HIGH PRESSURE WATER MIST PUMP UNIT
REVISION 4, MAY 2016
rectification carried out or needed, and advice of any external factors, which may have affected the
result. Any procedures stipulated by the system manufacturer shall be carried out in addition to this
program.
The following checks and inspections shall be made and recorded at intervals of not more than 6
months:
Half-yearly Servicing Routine by Danfoss Semco Approved Installer
1
Test operation of manual starting means (electrical system).
2
Check and test operation of safeties and alarms (electrical system).
3
Clean boxes, panels and cabinets.
4
Control of change over switch
between normal and emergency
supply
For UCP provided with power supply from more than
one source.
Normal supply and Emergency Power Supply.
The function of the automatic change-over switch.
Each routine of the half-yearly schedule shall be carried out by a competent person from Danfoss
Semco approved service company who shall provide the operator with a signed and dated report of
the inspection, advice of any rectification carried out or needed, and advice of any external factors,
which may have affected the results.
In addition to the weekly routine, the following checks and inspections shall be made and recorded
at intervals of not more than 12 months:
Yearly Servicing by Danfoss Semco Approved Installer
1
Valves and supply controls
Mechanically moveable components on the unit shall be
checked for smooth movement.
2
Automatic pump flow test
Automatic high-pressure pump unit flow test checks that
the pump unit capacity is according to type label.
3
Float valves
Float valves in unit tank shall be checked for correct
function.
4
Strainers and filters
Unit filters shall be inspected, cleaned or replaced as
necessary.
Back up batteries for Logic
relay in UCP
Batteries supplying the logic relay in the unit control
panel shall be inspected and checked for capacity (24
VDC). At capacity below 80%, the batteries shall be
replaced.
5
END USER MANUAL
OPERATION AND MAINTENANCE OF HIGH PRESSURE WATER MIST PUMP UNIT
REVISION 4, MAY 2016
PAGE 41 / 48
5.3
Maintenance according to VdS Schadenverhütung
To maintain operational readiness of the SEM-SAFE® High-Pressure Water Mist Pump Unit,
regular inspections and repairs shall be carried out. This section describes the minimum measures to
be taken and the parties responsible for carrying them out.
The operator shall appoint one responsible staff member (water mist warden) and one deputy to be
in charge of servicing and controlling the extinguishing system. They shall see to it that the
operational and maintenance instructions of the installer and any legal regulations are met.
The installer shall provide the operator with instructions on the control of the system to be carried
out. This includes action to be taken in respect of faults and operation of the system, with particular
mention of the procedures for emergency manual starting of the pump unit, and details of weekly
control as described in the section ”Weekly control”.
Note: In the case of installations without any extra restrictions or obligations set out in the building
permit:



Inspected by VdS at least once a year.
Being subject to the conclusion of a servicing contract with a VdS-approved installer.
Being subject to appropriate organisational measures.
Each routine of the schedule shall be carried out by a competent person who shall provide the user
with a signed, dated report of the inspection and advice of any rectification carried out or needed,
and advice of any external factors, which may have affected the result.
For systems where operational status is monitored automatically, daily controls are not necessary.
For monitored systems, the daily inspection can be deleted and the daily test carried out together
with the weekly routine that shall be carried out at intervals of not more than 7 days.
As the system is approved as a monitored system, the daily and weekly inspections have been
merged, the combined routine shall be carried out at intervals of not more than 7 days.
PAGE 42 / 48
END USER MANUAL
OPERATION AND MAINTENANCE OF HIGH PRESSURE WATER MIST PUMP UNIT
REVISION 4, MAY 2016
Daily/Weekly routine
1
The fill levels of the unit tank.
2
System stand-by pressure.
3
Automatic pump starting test
4
No errors indicated on the pump unit motor control panel.
5
No leakage from the pump unit.
6
The correct operational positions of unit stop and test valves.
7
The audible and visual alarm shall be operated for not less than 30 seconds and
simultaneously the connection to the fire brigade or the permanently manned location shall
be checked.
Note: The procedure shall be agreed with the alarm signal recipient.
In addition to the weekly routine checks, the below mentioned checks and inspections shall be
carried out and recorded at intervals of not more than 5 weeks.
Monthly routine
1
Visual control of unit supply filters.
2
Examine the unit filter system. Check for contamination, clean or replace as necessary.
In addition to the weekly routine checks, the below mentioned checks and inspections shall be
carried out and recorded at intervals of not more than 13 weeks.
Quarterly routine
1
Electrical supplies
Any secondary electrical supplies from diesel generators shall be
checked for satisfactory operation.
2
Stop valves
Unit stop, test and drain valves shall be tested for good working
function, positioned in the right operation position and secured.
In addition to the weekly routine checks, the below mentioned checks and inspections shall be
carried out by a VdS-approved installer at intervals of not more than 6 months.
END USER MANUAL
OPERATION AND MAINTENANCE OF HIGH PRESSURE WATER MIST PUMP UNIT
REVISION 4, MAY 2016
PAGE 43 / 48
Each routine of the below listed items shall be carried out by a competent person of the VdSapproved installer who shall provide the operator with a signed, dated report of the inspection and
advise of any rectification carried out or needed, and advise of any external factors, which may have
affected the results.
Half – yearly servicing routine by VdS– approved installer
1
Control of pump start
If in the event of a power supply failure an
electric supplied pump unit is supplied by an
emergency source of power, the automatic
change over shall be tested.
2
Check of float valves for unit tank filling
Check the float valves for automatic tank
filling
In addition to the weekly routine checks the below mentioned checks and inspections shall be
carried out by VdS-approved installer at intervals of not more than 12 months.
Each routine of the below listed items shall be carried out by a competent person of the VdSapproved installer who shall provide the operator with a signed, dated report of the inspection and
advise of any rectification carried out or needed, and advise of any external factors, which may have
affected the results.
Yearly servicing routine by VdS approved installer
1
Automatic highpressure pump
flow test
Each HP pump unit in the installation shall be tested at the full load
condition (by means of the test line connection coupled to the pump
delivery branch downstream of the outlet back pressure valve) and shall
provide the minimum system pressure and flow values stated on the
name plate.
Note: Appropriate allowances shall be made for pressure losses in the
supply pipe and valves between the source and the gauge at the
measuring point.
2
Check function of UCP
3
Check of alarm transmission from UCP to alarm recipient according to the alarm list
4
Back up batteries
for Logic relay in
UCP
PAGE 44 / 48
Batteries supplying the logic relay in the unit control panel shall be
inspected and checked for capacity (24 VDC). At capacity below 80%,
the batteries shall be replaced.
END USER MANUAL
OPERATION AND MAINTENANCE OF HIGH PRESSURE WATER MIST PUMP UNIT
REVISION 4, MAY 2016
5
Float valves in
unit tank
Float valves supplying water the unit tank shall be checked for correct
function.
6
Filters and
strainers
Filters in the water supply to the unit shall be inspected and cleaned as
necessary.
5.4
Maintenance of marine units according to MSC.1/Circ. 1432
These guidelines apply to all ships and provide the minimum recommended level of maintenance
and inspection for fixed fire protection systems.
Onboard maintenance and inspection should be carried out in accordance with the vessels
maintenance plan, which should include the minimum elements listed in sections 4 to 10 in the
MSC.1/Circ. 1432 guidelines.
Weekly test and inspection
1
Verify all UCP indicators and alarms are functional (lamp test).
2
Visually inspect the pump unit and its fittings.
3
Check pump unit valve positions, if valves are not locked, as applicable.
4
Verify unit tank water level.
Monthly inspections should be carried out to ensure that indicated actions are taken for the specified
equipment.
Monthly test and inspection
1
Verify all unit control or stop valves are in proper condition, and in the right open or closed
position.
2
Test automatic starting arrangements on all unit pumps as designed.
3
Verify unit standby pressure.
4
Check unit audible and visual alarm devices for proper function.
In addition to the monthly test schedule, the following check and inspections should be carried out
at least every 12 months, to ensure that the indicated actions are taken for the specified equipment.
END USER MANUAL
OPERATION AND MAINTENANCE OF HIGH PRESSURE WATER MIST PUMP UNIT
REVISION 4, MAY 2016
PAGE 45 / 48
Annual test and inspection
1
Externally examine all high-pressure cylinders for evidence of damage or corrosion.
2
Check the hydrostatic test date of all high-pressure cylinders.
3
Functionally test unit(s) audible and visual alarms.
4
Flow test all unit pumps for proper pressure and capacity.
5
Verify that all pump unit relief valves are properly set.
6
Examine unit filters to verify they are free of debris and contamination.
7
Functionally test the automatic unit tank filling system (see test procedure in DIOMA manual
for your system).
8
Test emergency power supply switchover, where applicable.
9
Check condition of batteries if any. Renew if capacity is less than 80% or batteries are more
than 3 years old.
PAGE 46 / 48
END USER MANUAL
OPERATION AND MAINTENANCE OF HIGH PRESSURE WATER MIST PUMP UNIT
REVISION 4, MAY 2016
NOTES
END USER MANUAL
OPERATION AND MAINTENANCE OF HIGH PRESSURE WATER MIST PUMP UNIT
REVISION 4, MAY 2016
PAGE 47 / 48
Danfoss Semco A/S
History
Danfoss Semco A/S is a global leader in the sale, development, production and
service/commissioning of certified fixed fire fighting systems. In 2006, two leading firms in the
field, Danfoss A/S and Semco Maritime A/S, joined forces to form the present company, with
Semco Maritime boasting over half a century of expertise in designing and installing fixed fire
fighting systems. All the while, Danfoss has developed and delivered key components for the hightech systems.
Today Danfoss Semco is an integral part of the Danfoss Group, Denmark’s largest industrial
manufacturing company with a daily output of more than 250,000 finished components. With more
than 24,000 employees worldwide, Danfoss is truly a global company.
Our business
Our company is located in Odense, Denmark.
Our Marine division comprises two main technologies: high-pressure water mist technology and gas
and foam technology. We push the boundaries of design and development to offer a wide range of
solutions for numerous application areas on almost any type of vessel.
Danfoss Semco is the world’s largest supplier of low-pressure CO2 fire fighting systems for the
marine industry. This division supplies gas, foam and dry chemical powder systems worldwide.
In the Industrial and Commercial division, Danfoss Semco has a successful track record with
applications ranging from complex fire fighting systems for museums and heritage sites to industrial
applications, office buildings and universities.
Global service
The Service Department at Danfoss Semco provides service, spare parts and technical support for
ship owners and vessels worldwide. Experience shows that periodic service carried out by the
manufacturer and the use of manufacturer approved spare parts is the best way to keep your fire
fighting system in good operating condition at the lowest possible life cycle cost.
Please do not hesitate to contact our Service Department at: service@danfoss-semco.com
PAGE 48 / 48
DANFOSS SEMCO A/S
MIDDELFARTVEJ 9 · DK-5000 ODENSE C · DENM ARK
TEL.: +45 7488 7800 · FAX: +45 7488 7801
fireprotection@danfoss-semco.com
CVR / VAT DK 29 42 44 70
www.danfoss-semco.com