Danfoss ICAD 600A-TS Motor Operated Valve Installation Guide
- June 9, 2024
- Danfoss
Table of Contents
Danfoss ICAD 600A-TS Motor Operated Valve
Installation
Motor operated valve
Type ICMTS with actuator, type ICAD 600A-TS
Refrigerants
The ICMTS is specifically designed for high pressure R744 applications.
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
The valves are designed for a max.
working pressure of 140 bar g (2030 sprig).
Technical data
ICMTS is a balanced valve which remains in its position. The return function
must be provided with the actuator used.
The ICMTS can be used in suction, liquid, hot gas and liquid/vapor lines. The
ICMTS regulates the flow of the medium by modulation or the on/off function,
depending on the control impulse to the actuator. Refer to the technical
leaflet for details on design and regarding selections.
The ICMTS valve is designed for use with the ICAD 600A-TS actuator from
Danfoss.
The ICAD 600A-TS actuator on the ICMTS 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 600A-TS motor and, through a magnetic coupling, rotate the
spindle in the ICMTS to make the cone move vertically. A Danfoss EKC 326 or
EKC 326A controller is typically used for high pressure applications.
Valve sizes
ICMTS is available in sizes from ICMTS 20A-33
(kv : 0.2 m3/h) to ICMTS 20-C (kv : 4.6 m3/h).
Installation
ICMTS + ICAD 600A-TS can be installed in horizontal pipelines with the
actuator pointing upwards (fig. 1).
The motor can be mounted in any position before locking it with the 3 Allen
screws (fig. 6, pos. 1).
The ICMTS valve must be installed with the arrow in the direction of flow.
When installing an ICMTS, refrigerant must not be allowed to escape and dirt
must not be allowed to enter the valve.
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.
ICMTS 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, such as the case with a welded-on end plate.
Welding or soldering (fig. 3)
The top cover, complete with function module, should be removed before welding
or soldering 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 or soldering
(as shown in fig. 3).
It is important to remove the seat (fig. 6, pos. 2) as the heat will damage
the seat.
Reassemble and tighten of seat (fig. 6, pos. 2):
Tools:
ICMTS 20-A/ICM 20-A33
Socket wrench:
13 mm (0.51 in.)
ICMTS 20-B/ICMTS 20-C
Allen key(hexagon socket wrench): 12 mm (0.47 in)
The internal surfaces and weld connections of the enclosed ICMTS 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 commencing the welding / brazing process.
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 body must be free from stresses (external loads) after installation.
Manual operation
A 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. 5). 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. If the signal connections are
wired to the actuator, it is possible to use the manual operation function
built into the actuator electronics which allows the motor to step in 1%
increments meaning that 100 steps will correspond to a fully open valve.
Please refer to the separate instruction manual 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 ICMTS
- ICAD 600A-TS, no insulation is necessary when kept inside temperature limits.
Surface treatment and identification
The ICMTS valves are surface treated 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. After welding, the
external surface around the connections of the valve body must be protected to
prevent against corrosion with a suitable coating.
When repainting the valve, it is recommended to protect the ID plate.
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. 5) 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 value
indicated in fig. 2.
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 the system carries.
The ICMTS 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. 5) can be used to open the seat to equalize pressure
internally before removing the top cover.
Replacement of the function module
- 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). Old orings cannot be reused.
Use only original Danfoss parts, including orings 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.
Danfoss A/S Climate Solutions danfoss.com.
+45 7488 2222
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