TK 61552-2-MM-EN
123
Suction Pressure Transducer
Removal
1.
Pump down the low side and equalize pressure to slightly positive.
2.
Disconnect the wires and remove the suction pressure transducer.
Installation
1.
Apply a refrigerant Loctite to the threads of the suction pressure transducer.
2.
Install and tighten the suction pressure transducer and reconnect the wires.
3.
Pressurize the low side and check for leaks. If no leaks are found, evacuate the low side.
4.
Open the refrigeration valves and place the unit in operation.
Electronic Throttling Valve (ETV)
Removal
1. Pump down the low side and equalize the pressure to slightly positive.
2. The ETV must be open to remove the stepper motor and piston assembly. Open the ETV by
placing the unit in the Evacuation Mode/Test, and disconnecting the four-pin connector on
the main/unified harness from the four-pin connector on the ETV before turning the unit off.
The microprocessor closes the ETV when the unit is turned off. Refer to the appropriate
Diagnostic Manual for information about the Evacuation Mode/Test.
Figure 94. ETV
1.
Four-Pin Connector
2.
Stepper Motor
3.
Valve Body
