MANUAL FOR CIMBRIA
TWO-WAY VALVES
Type LM & LN
LM
LN
MA01020000002
01.2010
 Copyright by Cimbria Manufacturing A/S
7700 Thisted, Denmark . www.cimbria.com
Subject to alteration
Manual for Cimbria
Two-way valves LM - LN
Table of contents
Foreword
3
EC Declaration of Conformity...............................................................................................4
Personal protection ............................................................................................................. 5
Explosion protection............................................................................................................ 6
Conditions of use
7
Delivery / Marking ............................................................................................................... 7
Preservation ....................................................................................................................... 7
General design
8
Application .......................................................................................................................... 8
Installation .......................................................................................................................... 9
Equipotential bonding ........................................................................................................11
Maintenance
12
Two-way valve ...................................................................................................................12
Valve flap ...........................................................................................................................12
Indication switches .............................................................................................................12
Manually operated valves ..................................................................................................13
Manually operated valves with wires and weights ..............................................................13
Motor-operated valves ...................................................................................................... 13
Spindle actuator .................................................................................................................13
Pneumatically operated valves ..........................................................................................14
Operation
Dismantling
Checklist for Two-way valve
14
15
16
2
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Manual for Cimbria
Two-way valves LM - LN
Foreword
You have chosen a product manufactured by one of Scandinavia’s leading manufacturers of
machines and equipment for grain and seed treatment.
We have developed, constructed and tested the machine in accordance with the most up-todate principles and techniques.
The machine is fitted only with proven products from respected suppliers.
As the machine consists of an optimised design in order to achieve maximum efficiency and
performance, this requires that you study the manual thoroughly.
Therefore please read the manual carefully BEFORE installation and commissioning.
Please pay particular attention to the section entitled “Maintenance”. Maintenance of
the machine is an important prerequisite for problem-free operation.
We would like to draw your attention to the fact that installation, operation and maintenance
of machines and plants for industry and agriculture must always be carried out by qualified
personnel.
This manual has been compiled in accordance with the current EU Machinery Directive and
must therefore be retained throughout the service life of the machine. When reordering the
manual, please quote the document number on the front page of the manual, or the
machine’s order no. on the order confirmation.
If you have any questions or comments, you are welcome to contact us:
Tel.: +45 9617 9000, Fax: +45 9617 9099 or e-mail: manufacturing@cimbria.com.
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Manual for Cimbria
Two-way valves LM - LN
Content of
EC Declaration of Conformity
Machine
Directive 2006/42/EC
Annex II, A
Manufacturer:
Cimbria Manufacturing A/S
Faartoftvej 22, 7700 Thisted, Denmark, +45 9617 9000
Person authorised to
compile the technical file:
Does hereby declare that
Machine name:
Machine type:
Machine no:
Pos. no.
Is in conformity with directive 2006/42/EC relating to machinery. Harmonised standards used:
EN ISO 12100-1: 2005: Basic terminology, methodology
EN ISO 12100-2: 2005: Technical principles
EN ISO 14121-1: 2007: Risk assessment - Principles
EN ISO 14121-2: 2007: Risk assessment - Practical guidance and examples of methods
The fitted electrical components are in conformity with:
Directive 2006/95/EC relating to electrical equipment designed for use within certain voltage limits.
Directive 2004/108/EC relating to electromagnetic compatibility.
Place:
DK 7700 Thisted
Date:
Head of production:
Signature:
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7700 Thisted, Denmark . www.cimbria.com
Subject to alteration
Manual for Cimbria
Two-way valves LM - LN
Personal protection
Safety precautions for the prevention of
accidents involving personal injury
1 Machines and equipment from Cimbria
11 Particular care must be exercised with regard to
Manufacturing A/S are fitted at the factory with safety
devices that are in accordance with current
manufacturing methods and comply with prevailing
regulations for the prevention of accidents, taking into
account the application for which the machine has
been designed.
2 The operator of the machine is expected, as a
minimum, to observe the regulations below with a
view to achieving maximum safety conditions for the
operators working at the machines.
3 Belt and chain guards must always be fitted and
closed. Open or missing guards are frequent causes
of serious injuries.
4 Safety switches, lock cylinders, speed monitors,
control units, solenoid valves or magnetic locks used
for locking doors must always be maintained in good
working condition. Safety switches must never be
short-circuited or otherwise bypassed.
5 Safety gratings and bars are usually permanently
attached to the machines. They can only be removed
by means of tools. Machines that are equipped with
such safety devices must only be operated with these
fitted and functioning correctly.
6 Satisfactory maintenance requires that the employer
takes appropriate steps to ensure that the machine
and its constructions are maintained at a safe and
proper level for as long as the machine is in service.
7 When carrying out setting-up, inspection,
maintenance and repair work, the drive motor must
be rendered inoperable by cutting off all phases.
This is done by means of a lockable circuit breaker
that isolates all the poles fitted either adjacent to the
machine, in the control desk or in the plant’s control
panel.
8 If the machine is driven by other power sources, e.g.
compressed air, hydraulics or steam, the supply lines
must also be shut off. The machine’s internal supply
system must be relieved of pressure. If the machine
is driven by means of weight, spring force or another
form of stored energy, this energy must be released.
9 Heated or cooled components must be handled with
caution due to the risk of burns/frostbite.
10 If the machine is put out of operation using the
emergency stop switch, it must not be possible to
restart it by resetting the emergency stop switch. It
must also be impossible to restart the machine before
the main switch is turned on again.
machines with cut-out mechanisms, e.g. pellet
presses, etc. The instructions accompanying the
machine must be strictly observed. When operating
machines with cut-out mechanisms, you must always
be prepared for the build-up of pressure, vacuum,
temperature, etc., at certain time intervals.
12 If a plant’s employees are unable to read or write, the
plant manager must clearly draw their attention to any
existing hazards and give them special instructions.
13 Cleaning and lubrication of machines or machine
sections may only be carried out when the machine
is not in operation. If it is necessary to climb onto or
into the machine, it is, without exception, absolutely
necessary to isolate all of the drive motor’s poles and
lock the service switches in question.
14 In the event that material samples have to be taken
from a machine, particular care must be exercised to
ensure that this can be done without risk. It is often
possible to take samples from an outlet pipe instead
of from within the machine itself.
15 When carrying out tasks that produce a lot of dust,
e.g. cleaning, respiratory protective equipment
must be used.
16 When working high up, anti-fall equipment must be
used according to applicable national regulations.
17 If a machine is losing oil or grease, this must be
removed and the leak repaired. Grease and oil on the
floor considerably increase the risk of accidents.
18 If Cimbria machines are incorporated into a plant or
assembled to make a new machine, all national
regulations must be complied with.
19 Cimbria machines and equipment may only be
operated by personnel who have received training in
the operation of the machines or equipment.
20 Noise levels (sound pressure level) at the workplace
can exceed 85 dB(A). In such cases, the operators
shall use ear defenders.
21 When the machine is taken out of service,
consideration must be taken of the environment and
recycling.
Fluids such as oil, coolant, brake fluid, etc., should be
drained into special containers and sent to a
processing facility. Toxic waste such as batteries
should be disposed of according to the provisions of
national legislation. Plastic materials should be
separated and sent for recycling. Sort metal
components by type.
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Manual for Cimbria
Two-way valves LM - LN
Explosion protection
Precautions for the prevention of dust fires
and dust explosions
1. General tidiness and cleanliness
4. Smoking and welding
1.1 Keeping areas clean in which combustible dust is
processed is an important prerequisite for safety.
1.2 The storage of materials in sacks and in bulk
near the machines should be avoided.
1.3 In order to reduce emissions of dust to the
surroundings, all conveying equipment, cyclones
and filters must be kept in good condition, and
any leaks in pipes and covers must be remedied
immediately.
1.4 In order to reduce the risk of dust explosion,
frequent and effective cleaning must be carried
out wherever dust is present. Please refer to the
operator’s manual and installation manual.
1.5 The motors must be kept free of dust.
2. Routine checks and maintenance
2.1 In order to prevent drive belts from generating
heat due to slipping (friction), the V-belts and flat
belts must be regularly checked at least once a
week.
2.2 Speed monitors and similar safety equipment
must be regularly checked at least once a week.
2.3 In order to avoid heat generation, all shafts and
bearings must be tested and inspected for
insufficient lubrication at least once a week.
3. Electrical installations
3.1 Electrical installations and auxiliary equipment
must be checked regularly.
The following must be observed:
 Portable lamps and lamp fittings without
shielding or protective glass must not be used.
 Avoid the use of extension cables and electric
heaters.
 Faulty installations must be repaired or
replaced.
 Loose cables must not be placed on the floor.
 Outside working hours the power within the
plant must be switched off.
 The entire wiring system must be examined by
an authorised electrician in accordance with
prevailing national regulations at least once a
year.
4.1 Smoking is strictly prohibited.
4.2 In the event that welding or similar is to be
carried out in the production or stock areas, prior
written permission to this effect must be
obtained from the manager responsible.
Such work may only be carried out when special
safety precautions have been put in place.
Moistened or special fire-retardant tarpaulins
must be spread out over the surrounding areas
and fire-extinguishing equipment must be placed
ready for use at the site
4.3 The welding area and its surroundings must be
kept under supervision for at least 10 hours after
welding work has been completed. The red-hot
metal particles (welding beads) that result from
welding or flame cutting are extremely
hazardous, as it is not always possible to see
where they land. They can pass through small
cracks and wall passages to adjacent and
underlying rooms and thereby be spread more
than 10 metres from the original working area.
Under no circumstances may welding or
cutting work take place on conveyor systems
in operation. After stopping and thoroughly
cleaning the system, the welding area must be
shielded, e.g. by closing off with mineral wool,
such that there is no connection to other
conveying units through inlets and outlets. When
working with downpipes and transport pipes,
these must be dismantled or the bottom end
flushed and covered so that sparks cannot get
into the conveying system or silos.
5. Static electricity
Equipotential bonding must always be carried
out on machines and components from Cimbria
in accordance with prevailing national
regulations.
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 Copyright by Cimbria Manufacturing A/S
7700 Thisted, Denmark . www.cimbria.com
Subject to alteration
Manual for Cimbria
Two-way valves LM - LN
Conditions of use
This machine must be used for the products as agreed in the contract.
Cimbria has more than 50 years of experience in the handling and treatment of grain, seeds
and pulses. On the basis of this experience backed up by theoretical studies, we have
deemed that our products are able to comply with the requirements of the ATEX directive
94/4/EC.
If products other than those specified are used or if the machine is used in a way other than
that specified to the manufacturer, new estimates will have to be made, and a new
assessment with regard to explosion hazards in the atmosphere must be performed.
It is the responsibility of the user of the product to inform us if this is the case.
Must not be set up in areas that are classified as potentially explosive.
Delivery / Marking
The two-way valve is normally assembled and tested at the factory, ready for incorporation
with other machines.
The parts are delivered without electrical components for starting the control system.
When contacting us, please state order number, type designation and item no.
The type plate is self-adhesive and is attached to the two-way valve.
Preservation
No special measures have been implemented for long-term storage.
After reception, all parts should be unpacked and stored in a suitable dry location until
installation is carried out.
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Subject to alteration
Manual for Cimbria
Two-way valves LM - LN
General design
Type LM and LN two-way valves are manufactured for industrial use and designed for
installation in Cimbria’s Q-spout system. The valve is designed for the transport of grain,
flour products and similar granulates.
If you are in any doubt about the application and utilisation of the two-way valve, please
contact Cimbria Manufacturing, stating the type and size of the two-way valve in question:
Q16/ Q20/ Q24/ Q30.
Application
Type LM and LN two-way valves are used to
control the flow of grain where one pipe
branches into two.
Type LM is used where a vertical pipe branches
into two angled pipes, whereas LN directs the
grain into one vertical and one angled pipe. If
the supply pipe is vertical, position “A” is used; if
it is inclined, position “B” should be used (see
fig. 1).
Fig. 1
LM
LN Pos. A
LN Pos. B
The two-way valves are available as manually operated valves with or without indication.
They are also available as pneumatically operated or motor-operated valves with indication.
Type LM pneumatic
Type LM motor-operated
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Manual for Cimbria
Two-way valves LM - LN
Installation
Before installation: check the conveying direction by referring to the flow diagram.
Remember necessary safety equipment such as safety helmets and footwear, gloves,
protective goggles and lifeline, if required, before commencing work.
NB! If lifting gear is utilised, it must be certified to lift the load in
question.
The weight is stated on the valve’s type label.
Make sure that no cleaning/inspection hatches or similar are located
in the pipe sections close to the two-way
valve Fig. 2
(minimum distance 850 mm), as there may be a risk of
serious injury if you put your hand into the valve. Fit
the two-way valve into the pipe section using 2 sets of
special Cimbria pipe assembly flanges.
In order to prevent dust emission, apply Secomastic
sealing compound to the grooves of the assembly
flanges (see fig. 2).
Fig. 3
Then push the two halves of the flange onto the
two-way valve. This may require light tapping in
the corners with a hammer. Then screw the
flanges together by means of 4 Pozidrive screws
and 4 x 4 square nuts (see fig. 3).
Valves from Q30 and up are installed by means of
nuts and bolts as shown in fig. 4.
Fig. 4
Ensure that the valve is neither under strain nor
twisted, as this may prevent the valve from
functioning correctly and result in unnecessary
wear on the joints.
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Manual for Cimbria
Two-way valves LM - LN
Electrical connection: Please refer to the enclosed documentation from the motor and
micro switch suppliers.
Pneumatic connection: Please refer to the enclosed documentation from the solenoid
valve supplier.
1
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Manual for Cimbria
Two-way valves LM - LN
Equipotential bonding
Static electricity
Equipotential bonding must always be carried out on machines and components from
Cimbria in accordance with prevailing national regulations.
Extra nut for static electricity equalizing
Mark for static electricity equalizing
Mark for static electricity equalizing
Extra nut for static electricity equalizing
11
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Manual for Cimbria
Two-way valves LM - LN
Maintenance
The machine has undergone a thorough safety review with regard to machine safety,
explosion and fire.
Use the checklist.
Failure to comply with the maintenance, cleaning and service intervals will result in the
warranty being void - and Cimbria A/S no longer being able to vouch for the integrity of the
machine’s safety standards, etc.
The two-way valve requires minimal maintenance. However, the following items should be
inspected every 500 hours.
Warning
Never clean or repair the two-way valve while it is in operation.
When carrying out cleaning or repair work, the power supply must be cut off in such a
manner that the two-way valve cannot be restarted inadvertently.
This is best carried out by means of a lockable emergency stop switch or by shutting off the
compressed air supply and removing the hose at the solenoid valve.
Two-way valve
Use compressed air to clean the two-way valve and check that all bolts and screws are
properly tightened (remember to use a dust mask).
Valve flap
Flaps that are worn must be replaced.
This can be done by loosening the 6 Allen screws in the valve, and then replacing the flap as
shown in fig. 5.
Fig. 5
Indication switches
Check the indication switches for defects and make any necessary adjustments.
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Manual for Cimbria
Two-way valves LM - LN
Manually operated valves
Type LM
Type LN
Manually operated valves with wires and weights
Check that the handle/lever is securely fastened to the shaft.
Check that the wire clamps are fastened to the wires.
Check the indication switches for faults by activating.
Motor-operated valves
Clean any dust from the motor’s cooling fins.
The cooling fan on the motor should be inspected for defects and then cleaned (refer to the
motor supplier’s maintenance manual).
Spindle actuator
Use compressed air to clean the motor of dust and inspect it for any defects. Check the
spindle actuator for defects and make sure that it is securely fastened to the valve (refer to
the motor supplier’s maintenance manual).
13
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Manual for Cimbria
Two-way valves LM - LN
Pneumatically operated valves
Check the pneumatic cylinder, valve block and
hose connections for leaks and defects (see
fig. 6). Check the micro switches for defects
(see fig. 7).
Fig. 6
Check that all bolts and screws are properly
tightened.
If the compressed air system is not equipped
with an oil lubrication system, it is
recommended that the system be lubricated
once a month with neutral oil.
This should be carried out by shutting off the
compressed air supply and then disconnecting
the compressed air hose at the solenoid
valve. Pour a little oil into the hose, before
refitting the hose and re-establishing the
compressed air supply.
Fig. 7
Operation
The two-way valve is characterised by a high level of durability and reliability, as well as low
energy consumption.
REMEMBER!!
Before starting the two-way valve following installation or maintenance work, always check
that all guards and plates are in place and securely fastened with bolts, nuts and screws,
etc. All covers must also be closed and locked.
The two-way valve is normally integrated into a pipe section that is built into a machine plant.
In such cases, the two-way valve is activated from a control room, from where the plant can
also be stopped.
The start-up of the plant may depend on whether the two-way valves are in the correct
position. A plant is normally started in reverse order, i.e. output transport must be
established first.
NB! Important.
Original spare parts must be used. The machine has undergone a thorough appraisal of
its safety with respect to machinery safety, explosion and fire, as a result of which a checklist
has been drawn up with regard to maintenance and cleaning.
If non-original spare parts are used, the prerequisite conditions for the checklist will not be
met, and the warranty will be void.
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4
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Subject to alteration
Manual for Cimbria
Two-way valves LM - LN
Dismantling
When, after many years, the service life of the two-way valve has expired, it should be
dismantled and disposed of in an environmentally sound manner.
Dismantling should take place as described under installation of the two-way valve, only in
reverse order.
After dismantling, separate the two-way valve into different material parts, i.e. steel in one
area, nylon and rubber seals in another, gear oil in a third, etc.
Finally, all individual components should be sorted into various different material categories
and then delivered for disposal according to the regulations applicable at the time.
Please keep these instructions in a safe place!
©Copyright by Cimbria Manufacturing A/S
7700 Thisted . Denmark – Tel. +45 9617 9000 . Fax +45 9617 9099
Web: www.cimbria.com . E-mail: manufacturing@cimbria.com
Member of the Cimbria Group of Companies.
15
 Copyright by Cimbria Manufacturing A/S
7700 Thisted, Denmark . www.cimbria.com
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Manual for Cimbria
Two-way valves LM - LN
Checklist for Two-way valve
Log
Description
Listen for abnormal noises
Check the machine for abnormal
vibrations
Vacuum clean the two way valve
Check whether there are leaks at
the inlet/outlet
Check bearings that are lubricated
for life for abnormal sounds,
vibrations and increases in
temperature
Check seals for leaks
Check that all bolts and screws are
properly tightened
Check the Micro-switches for
defects
Manually operated:
Check that the handle/lever is
securely fastened to the shaft
Check that the wire clamps are
fastened to the wires
Pneumatically operated shutter:
Check the valve block and hose
connections for leaks and defects
Check the air for impurities
Lubricate the compressed air
system
Motorised shutter:
Check the cooling fan and clean
*Check that motor’s cooling fins
and electrical components are not
covered with dust
Check the motors bearings for
noise
Daily
after
50
hours
every
150
hours
every
1000
hours
every
2000
hours
Yearly
x
x
x
x
x
x
Date
Initials
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
All bearings are lubricated for life, and must be replaced after 15,000 hours of operation.
Note! ONLY use originally spare parts
If non-original spare parts are used, the prerequisite conditions for the checklist will not be
met, and the warranty will be void.
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