Thermo King 098203, Руководство по обслуживанию

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Electrical Maintenance
155
High Pressure Cutout Manifold
1. Connect the manifold gauge to the compressor discharge service valve with a heavy duty, black
jacketed thick wall #HCA 144 hose with 6024 kPa, 60.24 bar, 900 psig working pressure rating.
2. Operate the unit in Cool by performing a Capacity 100 percent test from the Manual Function Test
menu of the controller.
3. Raise the discharge pressure f the compressor by blocking the condenser coil airflow. Temporarily
cover the compressor compartment, control box and power cord storage compartment with cardboard
to reduce condenser coil airflow. This should increase the discharge pressure enough to cause the
switch to open. When the switch opens, The compressor should
stop immediately.
NOTE: The discharge pressure should never be allowed to exceed 3,447 kPa, 34.4 bar, 500 psig.
4. Be sure to remove the cardboard installed in step 3.
NOTE: If the HPCO switch fails to stop compressor operation, replace the switch and repeat steps 1
through 4.
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.
1. Relief Valve
2. O-ring
3. Adapter Tee (Weather Head)
Figure 129: High Pressure Cutout Manifold
AXA0174