TK 61552-2-MM-EN
127
Figure 100.
Installing Complete ETV Assembly
1.
Use Heat Sink
2.
Direction of Refrigerant Flow
3.
Use a heat sink or wrap the valve body with a wet rag to prevent damage and solder the
tubing connections with 95-5 soft solder.
4.
Connect the main/unified wire harness to the ETV at the four-pin connector.
5.
Pressurize the low side and test for leaks.
6.
If no leaks are found, evacuate the low side.
7.
Install the components that were removed to access the ETV.
8.
Open the refrigeration valves and place the unit in operation.
Hot Gas Bypass Solenoid Valve
Removal
1.
Recover the refrigerant charge.
2.
Disconnect the wires and remove the coil for the valve.
3.
Unsolder the refrigeration lines.
4.
Remove the mounting bolts and remove the valve.
Installation
1.
Clean the tubes for soldering.
2.
Remove the coil from the valve.
3.
Place the valve in the unit and install the mounting bolts. The arrow on the valve indicates
the direction of flow through the valve. Verify that the arrow points in the proper direction.
4.
Solder the inlet and outlet connections. After the valve cools, install the coil.
5.
Pressurize the refrigeration system and test for leaks.
6.
If no leaks are found, evacuate the system.
7.
Recharge the unit with proper refrigerant and check the compressor oil.
Compressors with Internal Oil Filter
In the first quarter of 2014, four cylinder compressors with an internal oil filter are being phased
into truck and trailer units that typically use compressors with external oil filters. The internal oil
filter is located in the compressor sump near the oil pickup tube (
N
No
otte
e:: These units use compressors with oil filters. If the compressor does not have an external
oil filter, it has an internal oil filter.
