Danfoss ICM 20-65 Motor Operated Valve Installation Guide
- June 5, 2024
- Danfoss
Table of Contents
ICM 20-65 Motor Operated Valve
Installation Guide
Installation
Refrigerants
ICM 20:
Applicable to HCFC, non flammable HFC, R717 (Ammonia) and R744 (CO2)
ICM 25-65:
Applicable to HCFC, nonflammable HFC, R717 (Ammonia), R744 (CO2) and R1234ze
Flammable hydrocarbons are not recommended.
The valve is only recommended for use in closed circuits.
For further information please contact Danfoss.
Temperature range
Media: -60 – 120 °C / -76 – 248 °F
Ambient: -30 – 50 °C / -22 – 122 °F
Pressure
ICM 20: The valves are designed for a max. working pressure of 52 bar(g)
/ 754 psig.
ICM 25-65: The valves are designed for a max. working pressure of 65
bar(g)/943 psig.
Technical data
ICM is a balanced valve that remains in its position. The return function must
be provided with the actuator used.
The ICM can be used in suction, liquid, hot gas, and liquid/vapor lines. The
ICM regulates the flow of the medium by modulation or on/off function,
depending on the control impulse to the actuator. Refer to the technical
leaflet for details on design and regarding selections.
The ICM valve is designed for use with the ICAD actuator from Danfoss. The
ICAD actuator on the ICM ensures compatibility with the regulators provided by
Danfoss plus a range of other controllers, especially PLC controllers. A
control signal from a Danfoss controller or PLC will activate the ICAD motor
and through a magnetic coupling rotate the spindle in the ICM to make the cone
move vertically.
Valve cone
A V-shaped regulating cone provides optimum regulation accuracy.
Valve sizes
ICM is available in sizes from ICM 20-A (kv: 0.6 m 3 /h) to ICM 65-B (kv: 70 m
3 /h).
Modular valve concept
The ICM valve can be delivered as a parts program or a complete valve
depending on the combination of parts wanted to form the selected and needed
valve.
If the valve is delivered as a parts program it will consist of a valve body,
a complete function module, and an actuator.
Installation
ICM + ICAD can be installed in horizontal pipelines with the actuator pointing
upwards (fig. 1).
The top cover of the ICM can be turned 90° in any direction without any
influence on the valve function. The motor can be mounted in any position
before locking it with the 4 Allen screws (fig. 5, pos.13).
The ICM valve must be installed with the arrow in the direction of flow.
When installing an ICM, the refrigerant must not be allowed to escape and dirt
must not be allowed to enter the valve.
The valve is designed to withstand high internal pressure. However, the piping
system should be designed to avoid liquid traps and reduce the risk of
hydraulic pressure caused by thermal expansion. It must be ensured that the
valve is protected from pressure transients like “liquid hammers” in the
system.
ICM valves must not be mounted in systems where the outlet side of the valve
is open to the atmosphere. The outlet side of the valve must always be
connected to the system or properly capped off, for example with a welded-on
end plate.
Welding (fig. 3)
The top cover, complete with the function module, should be removed before
welding to prevent damage to O-rings and Teflon (PTFE) in the function module
and to avoid getting welding debris in the module.
Note: Remove all parts from the valve body before welding (as shown in
fig. 3). Especially on ICM 20, it is important to remove the seat (fig. 5,
pos. 15) as the heat will damage the seat.
Reassemble and tighten with hexagon key 12 mm (2 Nm).
The internal surfaces and weld connections of the enclosed ICS/ICM valve have
been applied with an anti-corrosion treatment.
In order to maintain the effectiveness of this anti-corrosion treatment, it is
important to ensure that the valve is disassembled just prior to the
welding/brazing process being undertaken.
In the event that the function modules are to be left disassembled for any
length of time, please ensure that the function modules are further protected
by placing in a polyethylene bag or by applying a rust protection agent (e.g.
refrigeration oil or BRANOROL) on the surfaces.
Only materials and welding methods, compatible with the valve body material,
must be welded to the valve body. The valve should be cleaned internally to
remove welding debris on completion of welding and before the valve is
reassembled.
Avoid welding debris and dirt in the valve body and the function module. The
valve the body must be free from stresses (external loads) after installation.
Manual operation
Magnetic coupling can be used to rotate the spindle manually if the actuator
has been removed. To make use of the manual operation, a multi-function tool
(optional) is used (see fig.
The code numbers for the multi-function tools are:
ICM 20 – ICM 32: 027H0180
ICM 40 – ICM 65: 027H0181
Manual operation is also possible with the actuator mounted on the valve and
the power supply connected to the actuator. No matter if the signal
connections are wired to the actuator it will be possible to use the manual
operation function built into the actuator electronics allowing the motor to
step in 1% increments meaning that 100 steps will correspond to a fully open
valve. Please refer to the separate instruction on ICAD to address the manual
function.
Insulation
Insulating the valve and its actuator is only necessary if an energy
consideration in the plant requires this. Regarding the function of the ICM +
ICAD, no insulation is necessary when kept inside temperature limits.
Surface treatment and identification
The ICM valves are Zinc-Chromated from factory.
If further corrosion protection is required, the valves can be painted.
Note: Magnet coupling must be protected.
Precise identification of the valve is made via the ID plate on the top cover.
After welding, the external surface around the connections of the valve body
must be protected to prevent corrosion with a suitable coating.
Protection of the ID plate when repainting the valve is recommended.
Assembly
Remove welding debris and any dirt from pipes and valve body before assembly.
Check that the cone has been fully screwed back towards the top cover before
it is mounted in the valve body.
Use the manual magnetic tool (fig. 6) to achieve rotation through the top. A
small amount of refrigeration oil on both O-rings can make the insert easier
to install into the valve body.
Tightening
Tighten the top cover/function module with a torque wrench, to the values
indicated in the table (fig. 7).
Maintenance
Service
A precise service schedule cannot be given for 0the valve as service intervals
will depend on operating conditions, i.e. how often the valve operates and the
number of impurities and dirt the system carries. The ICM valves are easy to
dismantle and all parts inside can be replaced by changing the function
module.
Do not open the valve while the valve is still under pressure.
Be aware that the valve can be under pressure from both sides and that the
manual magnet tool (fig. 6) can be used to open the seat and thus equalize
pressure internally before removing the top cover.
If the Teflon ring (fig. 4, pos. 19) has been damaged, the Teflon must be
machined or replaced according to the condition of the parts.
Dismounting ICAD from ICM
When dismounting the ICAD from ICM, make sure that the 3 locking screws have
been loosened and are not in contact with the ICM top.
Do not attempt to turn or remove the ICAD if the locking screws are not
loosened.
Dismantling the valve (fig. 2)
Do not remove the function module while the valve is still under pressure.
- Upon removing the 4 bolts twist the module approx. 45° in either direction.
- Push two screwdrivers in between the top cover and the valve body.
- Pull the screwdrivers upwards to release the function module and its o-rings.
Replacement of the function module
The function module is easily replaced.
Remove the existing module (fig. 2):
- Upon removing the 4 bolts twist the module approx. 45° in either direction.
- Push two screwdrivers in between the top cover and the valve body.
- Pull the screwdrivers upwards to release the function module and its o-rings.
– Remove the old module.
– Oil the O-rings on the new module with a small amount of refrigeration oil.
The spindle inside the valve must not be greased or oiled (fig. 4).
If the valve seat has been dismounted, the ICM top must remain loosely
connected to this. The two Allen screws that are holding the insert should not
be tightened for the alignment to be precise.
Use only original Danfoss parts, including o-rings and gaskets for
replacement. Materials of new parts are certified for the relevant
refrigerant.
In cases of doubt, please contact Danfoss.
Drawings are only for illustration, not for dimensioning or construction.
Danfoss accepts no responsibility for errors and omissions. Danfoss Industrial
Refrigeration reserves the right to make changes to products and
specifications without prior notice.
Any information, including, but not limited to information on selection of
product, its application or use, product design, weight, dimensions, capacity,
or any other technical data in product manuals, catalogs descriptions,
advertisements, etc. and whether made available in writing, orally,
electronically, online or via download, shall be considered informative and is
only binding if and to the extent, explicit reference is made in a quotation
or order confirmation. Danfoss cannot accept any responsibility for possible
errors in catalogs, brochures, videos, and other material. Danfoss reserves
the right to alter its products without notice. This also applies to products
ordered but not delivered provided that such alterations can be made without
changes to the form, fit, or function of the product. All trademarks in this
material are property of Danfoss A/S or Danfoss group companies. Danfoss and
the Danfoss logo are trademarks of Danfoss A/S.
All rights reserved.
© Danfoss|climate solutions|2022.03
AN00008641851404-000701 | 8
Documents / Resources
|
Danfoss ICM 20-65 Motor Operated
Valve
[pdf] Installation Guide
ICM 20-65, Motor Operated Valve, Operated Valve, Pressure Control Valve, ICM
20-65, Control Valve
---|---
|
Danfoss ICM 20-65 Motor operated
valve
[pdf] Installation Guide
ICM 20-65 Motor operated valve, ICM 20-65, Motor operated valve, operated
valve, valve