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ARMY TM 9-4210-381-14
NAVY EE-000-CA-MMA-010/7053-AC
AIR FORCE TO 35E9-136-31
5-37.
HOT GAS BYPASS VALVE.
This task cover:
Inspection
Adjust
Removal
Disassembly
Repair/Replace
Reassembly
Installation
INITIAL SETUP:
Tools
Tool kit, service, refrigeration unit (Item 1, Appendix B)
Personnel: 1
Equipment Conditions:
WARNING
Disconnect input power to the air conditioner before performing any Internal maintenance. Voltages
used can KILL. Shutting the unit off at the control panel does not disconnect unit power.
1.
Disconnect air conditioner input power at source.
2.
Remove right front condenser panel (para 4-28).
3.
Remove right front evaporator panels (para 4-25).
INSPECTION
1.
Inspect for evidence of leaks, damaged lines, and loose or missing mounting hardware (see Figure 5-26).
2.
If a leak is suspected or indicated, test per paragraph 5-15.
3.
Check that mounting damp is secure.
ADJUST
1.
Connect compound gauge to low service valve (para 5-11).
2.
Open manual valve (para 5-39).
3.
Open left electrical plate (para 4-30).
4.
Install jumper wires to TB2 (para 4-61) for single mode operation (see FO-3).
5.
Set cool control thermostat (para 4-87) to lowest temperature setting.
WARNING
High voltage is used in operation of this equipment. DEATH ON CONTACT may result if personnel fail to
observe safety precautions.
6.
Connect air conditioner input power at source.
7.
Start unit in COOL mode.
NOTE
• The hot gas bypass valve is set at the factory to maintain the suction pressure above 55 to 58 psig
(3.9 to 4.1 kg/cm2) at the compressor.
• Allow air conditioner to run until pressure remains constant.
5-79
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