Startup and operational check. - TM-55-1905-223-24-170035

TM 55-1905-223-24-17

Make sure blower motor, fan and other internal parts are free of dust and dirt. Clean with

soft bristle brush and vacuum cleaner with a non-metallic nozzle.

Open discharge and suction service valves on the compressor.

Make sure external seawater inlet and outlet valves are open.

Make sure external seawater strainer is clean (TM 55-1905-223-24-18).

Make sure no electrical components are wet and that panels are closed before turning

power ON to the unit.

Turn electrical power ON to the unit. Run the unit and conduct operational check.

(b)

Startup and operational check.

Set thermostat to COOLING position. Set the clear dial on the thermostat to the desired

temperature. The red dial is the room temperature indicator.

NOTE

The fan will run continuously if the fan switch is set to ON.

Make sure the thermostat is set to a lower setting than the ambient room temperature as

indicated on the red dial.

Adjust discharge outlets for desired air flow direction.

When the unit has started, run the unit for 5 to 10 minutes. Check the entering air

temperature at the filter with a thermometer. Also check the leaving air temperature at the

discharge duct. There should be a 15 to 20 degree difference in the two temperatures. If

not, refer to Troubleshooting, Table 2-2.

While the unit is running, listen for noise or vibration.

Correct as required

(Troubleshooting, Table 2-2).

Make sure any water collected in the condensate drain pan is draining properly.

Visually check and make sure the condenser seawater is properly discharging overboard.

NOTE

After an air conditioner has been OFF for an extended period of time, it may take

several hours for the unit to reach maximum cooling performance. This is

especially true in high ambient temperatures.

2-6