Danfoss ICMTS 50-80 Motor Operated Valve Type With Actuator Installation Guide

: August 22, 2024
: Danfoss

Table of Contents

Danfoss ICMTS 50-80 Motor Operated Valve Type With Actuator
Specifications
Product Usage Instructions
FAQ
Installation
Assembly
Maintenance
Replacement of the function module
CONTACT
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Danfoss ICMTS 50-80 Motor Operated Valve Type With Actuator

Specifications

Valve Type: Motor-Operated Valve
Model : ICMTS 50/80
Actuator Type: ICAD 600A-TS
Max. Working Pressure: 140 bar (2030 psig)
Valve Sizes: DN 50, DN 80

Product Usage Instructions

Installation

Ensure the valve is mounted in a closed circuit system.
Install the motor in any position and lock it with the 3 Allen screws.
Do not mount the valve in systems where the outlet side is open to the atmosphere.
Before welding or brazing, remove the top cover and function module to prevent damage.

Maintenance

Clean connections with a suitable cleaning agent.
Apply flux on piping ends before brazing.
Use recommended brazing material and follow specified temperature ranges.
Remove residual flux after brazing.

Manual Operation

To manually operate the valve:

Use a multi-function tool (code number: 027H0181) to rotate the spindle.

FAQ

Q : What refrigerants is the ICMTS 50/80 designed for?
A: The valve is specifically designed for high-pressure R744 applications.
Q: What control signal activates the motor in the ICAD 600A-TS actuator?
A: A control signal from a Danfoss controller or PLC will activate the motor.
Q: Can the ICMTS be used in different types of lines?
A: Yes, the ICMTS can be used in suction, liquid, hot gas, and liquid/vapor lines.

Installation

Refrigerants

The ICMTS 50/80 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

Allowable TS: -60/+150 °C (-76/+302 °F) Operation: -40/+50 °C (-40/+122 °F)
Ambient: -30/+50 °C (-22/+122 °F)
In systems with continuous media temperatures above +50 °C (+122 °F), Danfoss recommends inspecting the valve annually and replacing the PTFE valve seat if needed.

Pressure

The valves are designed for a max.
working pressure of 140 bar (2030 psig).

Function

ICMTS is a balanced valve which remains in its position. The return function must be provided by use of the actuator.
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 ˛ function, depending on the control impulse to the actuator. Refer to the technical lea°et 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 change opening degree.
Valve sizes
ICMTS is available in sizes from

ICMTS 50-A (Kv: 9,0 m3/h)
ICMTS 80-A (Kv: 18 m3/h)
ICMTS 80-B (Kv : 27 m3/h)

Installation
ICMTS + ICAD 600A-TS can be installed in pipelines with the actuator pointing upwards FIg. 1) or in 45 °C angle to vertical up.

The motor can be mounted in any position before locking it with the 3 Allen screws (FIG. 6, pos. 2). The ICMTS valve must be installed with the arrow in the direction of °ow. 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 the atmosphere. The outlet side of the valve must always be connected to the system or properly capped o˛, such as the case with a welded-on end plate.

Welding or brazing (fig. 3 & 4)

The top cover, complete with the function module, should be removed before welding or brazing to prevent damage to O-rings and Teflon (PTFE) in the function module and to avoid getting welding debris in the module. Be careful not to damage the sealings and sealing surfaces and make sure the complete bonnet is protected from dirt and water while removed. The internal surfaces and weld connections of the enclosed ICMTS valve have been applied with an anti-corrosion treatment. 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 them in a polyethylene bag or by applying a rust protection agent (e.g. refrigeration oil) on the surfaces.
Only materials and welding methods, compatible with the valve body material, must be applied. 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.

Brazing (fig. 4)

When brazing, Danfoss recommends using Ag40 minimum 450 – 700 °C filler or better which is suitable for the working pressure, and following the procedure observed (fig. 4):

Remove top cover/insert
Clean connections with a cleaning agent
Wrap around wet cloth
Apply °ux on piping ends
Apply inert gas internally
Heat up piping
Braze with recommended brazing material and within temperature range specific
Remove residual °ux

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 ÿg. 7). 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 the 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. After welding, the external surface around the connections of the valve body must be protected to prevent 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. Use the manual magnetic tool (fig. 7) 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 bonnet with a torque wrench, to the values indicated in the table (fig. 2). Please note that the table (fig. 2) containing maximum torque must be adhered to and never exceeded.
ICAD 600-TS configuration
To work with ICMTS 50/80 the ICAD parameter i26 Valve configuration shall be set to 3 (ICM 32).

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. 7) can be used to open the seat to equalize pressure internally before removing the top cover.
Before servicing the valve, isolate it from
the system. Drain CO˝ liquid e.g. to above
5,2 bar to prevent a large formation of dry ice before evacuation to zero pressure. Check for refrigerant pressure before unscrewing and removing the top cover. If the °at gasket FIG6, pos. 1) or the O-ring sealing (FIG. 6, pos. 3) has been damaged, it must be
replaced using the ICMTS inspection kit.

Replacement of the function module

Remove the old module.
Oil the O-rings (ÿg. 6, pos. 3 & 4) on the new module with a small amount of refrigeration oil.
The spindle inside the valve must not be greased or oiled Fig. 5 ).

Repair of the function module

The ICMTS 50/80 seat PTFE sealing can be replaced using a Danfoss repair kit.

Unscrew the 4 M4 Allen screws (fig. 8)
Fasten the cylindrical assembly lower part in a vise at the °at surfaces and unscrew the upper part with a wrench at the °at surfaces (Fig, pos. 1 & fig. 9)
Disassemble the assembly into two parts (fig 10)
Replace the PTFE sealing with the one from the repair kit (fig10, pos. 1)
Reassemble the 2 parts and tighten the assembly by use of a vise and wrench to the torque indicated in fig11
Clean and reassemble the entire insert with the 4 M4 Allen screws tightened to torque 5 Nm (3.7 lb-feet) (fig. 12)
Add refrigeration oil to the new O-ring and replace the O-ring (fig. 12, pos. 1)
Replace the Flat gasket fig.6, pos. 1) and assemble the valve to the torque indicated in fig. 2

The piston is not subject to replacement, but it may be cleaned including the Ø2,5 mm equalization hole. The spindle inside the valve must not be greased or oiled (ÿg. 5). In case the piston has been damaged, the entire top module shall be replaced. Charge CO˝ gas to above 5,2 bar to prevent a large formation of dry ice when charging with CO˝ liquid or equalizing with system pressure. Use only original Danfoss parts, including O-rings and gaskets for replacement. Materials of new parts are certiÿed 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.

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