6
VI. Pre-Installation Testing
Before mounting the air conditioner to the enclosure, test for proper operation. This will verify the shipping
integrity of the system. Please follow the steps below prior to installation.
CAUTION
1
. The unit must sit in an upright position at a minimum room temperature of 65°F to allow the system to
warm-up. This is particularly important during winter months.
2. Refer to the nameplate for proper electrical voltage and current requirements. Connect the power cord
to a properly grounded and fused electrical supply, leaving electrical power to the unit turned off.
3. Remove the rubber plug from the lower panel. The thermostat dial is visible through the hole in the
lower panel. Note the factory thermostat setting which is typically 75
o
F.
4. Adjust the thermostat to its maximum setting (turn it clockwise).
5. Turn the electrical power on.
6. Verify that the evaporator blower is running.
7. Adjust the thermostat to its minimum setting (turn it counterclockwise). The compressor should start.
On units equipped with a short cycle protector, the compressor will have a delayed start of 6 minutes
from the time power is applied to the unit.
8. Verify that the condenser fan is running.
9. Operate the air conditioner for approximately ten (10) minutes. During this period no unusual noise or
vibration should be evident. Both the evaporator and condenser fans or blowers should be delivering
air through their respective discharge ports. The cool air discharged should be less than 70°F when the
room temperature is between 70°F and 80°F.
10. Turn off the electrical power and disconnect the air conditioner from the power source.
11. Adjust the thermostat back to 70°F. Failure to do this will cause the coil to freeze.
12. Reinstall the rubber plug.
NOTE:
Before shipment all Kooltronic Air Conditioners are subjected to a performance test.
The air conditioner must be standing in its proper mounting position for a minimum of
five (5) minutes prior to testing. Failure to follow this procedure will cause permanent
damage to the compressor.
