Danfoss ICM 100 to 150 Motor Operated Valve Installation Guide
- June 3, 2024
- Danfoss
Table of Contents
Danfoss ICM 100 to 150 Motor Operated Valve
Installation
Refrigerants
- Applicable to HCFC, non flammable HFC, R717 (Ammonia) and R744 (CO2).
- Flammable hydrocarbons are not recommended.
- The valve is only recommended for use in closed circuits. For further information please contact Danfoss.
OVERVIEW
- Housing
- Top cover
- Gasket
- Bolts
- Allan screws
- Actuator
- Insert
- Magnetic coupling
Temperature range
- Media: -60/+120 °C (-76/+248 °F)
- Ambient: -30/+50 °C (-22/+122 °F)
Pressure
The valves are designed for a max. working pressure of 52 bar (754 psig).
Technical data
The ICM can be used in suction, liquid and hot gas 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 for
design and selection information.
The ICM 100-150 valves are designed for use with the ICAD 1200 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 valve open or close.
Regulation performance
The V-shaped opening in the insert provides optimum regulation accuracy.
Valve sizes
ICM is available in sizes from ICM 100-B (kv: 142 m3/h) to ICM 150-B (kv: 370 m3/h)
Service friendly valve design
The ICM 100-150 is delivered as a complete valve. For service needs different spare part kits are available.
Installation
- ICM + ICAD is installed in horizontal pipelines with the actuator pointing upwards (fig. 1).
- The top cover can be rotated in any given direction without any influence on the valve function. The motor can be mounted in any position before locking it with the 3 Allen screws (fig. 3, pos.5).
- The ICM valve must be installed with the arrow in the direction of flow.
- When installing an ICM, refrigerant must notV be allowed to escape and dirt ingress must be prevented.
- The valve is designed to withstand a 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 hammer” in the system.
- ICM valves must not be mounted in systems where the outlet side of the valve is open to 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. 2)
The valve can remain assembled during the welding process provided that the welding method is controlled and ensuring no welding debris.
The internal surfaces and weld connections of the enclosed ICS/ ICM valve have
been applied with an anti-corrosion treatment.
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. Welding with open flame is not
allowed.
Avoid welding debris and dirt in the valve body and the function module. The
valve body must be free from stresses (external loads) after installation.
Manual operation
A multi function tool (fig. 4) 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. 4). The code number for the multi
function tool is 027H0181.
Manual operation is also possible with the actuator mounted on the valve and
the power supply connected to the actuator. Irrespective 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% will correspond to a fully open
valve. Please refer to the ICAD instruction sheet for further information
regarding manual operation via the ICAD actuator.
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 against 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. When installing the insert into the valve house a small amount of refrigerant oil on both O-rings will ease the installation. Use the magnetic tool when mounting the top cover.
Tightening
Tighten the top cover/function module with a torque wrench, to the values indicated in fig. 5.
Maintenance
Service
- A precise service schedule cannot be given for the valve as service intervals will depend on operating conditions, i.e. how often the valve operates and the amount of impurities and dirt within the system.
- It is recommended to inspect, once a year, the spindle and cast iron nut against wear, see fig 12 lubrication point spindle – nut.
- The ICM 100-150 valves are easy to dismantle and spare part kits are available for servicing the valves. Do not open the valve while the valve is still under pressure.
- 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. 4) can be used to open the seat and thus equalize
pressure internally before removing the top cover.
If the teflon valve plate has been damaged this should be replaced as shown in
(fig. 11). When reassembling the servo piston after replacement of the Teflon
valve plate, Danfoss recommends to use Loctite 586 or similar on the thread of
the servo piston.
Dismantling the valve
Do not remove the top cover while the valve is still under pressure.
- Remove the 8 to 10 bolts from the top cover (fig. 6).
- Push two screwdrivers in between the top cover and the valve body (fig. 6).
- Pull the screwdriver upwards to remove the top cover (fig. 6).
- Use the same two screwdrivers to remove the insert from the valve body. Place the end of the screwdrivers in the machined groove on the outside of the insert (fig. 7) and pull the screwdrivers downwards to release the function module and its o-rings from the valve body.
Servicing and replacing the function module
The function module can easily be serviced or replaced.
- Remove the 8 to 10 bolts from the top cover (fig. 6).
- Push two screwdrivers in between the top cover and the valve body (fig. 6).
- Pull the screwdriver upwards to remove the top cover (fig. 6).
- Use the same two screwdrivers to remove the insert from the valve body. Place the end of the screwdrivers in the machined groove on the outside of the insert (fig. 7) and pull the screwdrivers downwards to release the function module and its o-rings from the valve body.
- Screw the spindle 4 times counter clockwise to lift the bearing house from the insert (fig. 8).
- By pulling up on the bearing house the piston assembly can be withdrawn from the insert (fig. 8).
- Unscrew the spindle and bearing house from the piston assembly (fig. 9).
- By pushing down and turning on the pilot piston the piston assembly can easily be dismantled (fig. 10).
- Replace wear parts according to the sparepart kits and reassemble the valve
Oil the new o-rings on the insert with a small amount of refrigerant oil when reassembling the valve.
- For cast iron nut in the piston (see fig. 12 – steel material (standard with production from week 49, 2021)), lubricate the spindle. (Sales codes 027H7135 /027H7155/ 027H7175).
- For peek nut in the piston (see fig. 12 peek plastic material (standard until production week 49, 2021)), no oil or grease on the spindle. (Sales codes 027H7479 /027H7480 / 027H7481).
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
The following text is applicable to the UL listed products ICM 100-150 Applicable to all common non-flammable refrigerants, including/excluding (+) R717 and to non-corrosive gases/liquids dependent on sealing material compatibility (++). The design pressure shall not be less than the value outlined in Sec. 9.2 of ANSI/ASHRAE 15 for the refrigerant used in the system. (+++).
© Danfoss | Climate Solutions | 2022.06
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