Thermo King 098916, Руководство по обслуживанию

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Electrical Maintenance
120
High Pressure Cutout Switch
Removal
Remove the high pressure cutout switch by
performing the following steps:
1. Isolate the compressor from the system.
a. Front seat the discharge service valve by
turning the valve fully clockwise.
b. Front seat the suction service valve by
turning the valve fully clockwise. Turn the
digital service valve one quarter turn to the
right.
2. Recover the refrigerant from the compressor.
(see “Recovering Refrigerant from the
System).
3. Disconnect the high pressure cutout switch
wires from the control box.
4. Remove the high pressure cutout switch from
the compressor flange.
High Pressure Cutout Switch
Installation
Install the high pressure cutout switch by
performing the following steps:
1. Apply Locktite sealant to the threads of the
switch.
2. Install switch in compressor flange.
3. Pressurize the compressor with refrigerant and
check for leaks.
4. Evacuate the compressor (see “Evacuation
and Cleanup of the Refrigeration System”).
5. Route wires into the control box and connect
to proper terminals.
6. Back seat the discharge service valve by
turning the valve fully counter-clockwise.
7. Back seat the suction service valve by turning
the valve fully counter-clockwise.
8. Turn the digital service valve one quarter turn
to the left.
9. Perform a controller pretrip test to verify
system operation.
1. Low Pressure Cutout Switch
2. High Pressure Cutout Switch
3. Discharge Service Valve
4. Suction Service Valve
Figure 66: Low and High Pressure Cutout Switches
1
2
3
4