Table 4-11. Air Conditioner Cooling Coil Troubles Troubleshooting (Continued).

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Table 4-11. Air Conditioner Cooling Coil Troubles Troubleshooting.

TM-55-1905-219-14-8 Landing Craft Utility (LCU) 1667 Class Boston Hull Numbers 1667-1670 NSN 1905-00-168-5764 Manual

Table 4-11. Air Conditioner Cooling Coil Troubles Troubleshooting.

TM 55-1905-219-14-8

4-5. GENERAL (Continued).

Table 4-11. Air Conditioner Cooling Coil Troubles

Troubleshooting (Continued).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

Step 2.

Solenoid coil burned out.

Check to see if coil responds to current. If not, replace coil.

Step 3.

Solenoid thermostat set too high.

Reset thermostat to maintain desired temperature.

Step 4.

Compressor not running.

Determine cause of compressor shutdown. Make any adjustments required and

restart.

Step 5.

Thermal expansion valve improperly set.

Reset expansion valve to 8 - 10superheat.

Step 6.

Thermal expansion valve remote bulb has lost its charge or improperly installed or

insulated.

Check installation and insulation of remote bulb. Visibly check bulb charge.

Step 7.

Thermal expansion valve orifice clogged.

Clean valve orifice with compressed air.

Step 8.

Stop valve in liquid line closed. Open valve.

4. Complete frosting of coil - failure to cool.

Step 1.

Fan not running.

Check switches, wiring, fuses, and thermostat. Correct any faulty condition.

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