OPERATOR TROUBLESHOOTING - continued
TEST OR INSPECTION
C O R R E C T I V E ACTION
REDUCED COOLING CAPACITY. - continued
Step 6. With unit operating in COOL mode, check condition of refrigerant in sight glass.
If indicator color is in the yellow zone or numerous bubbles appear in window, turn
selector to OFF/RESET and notify supervisor.
Step 1. Check that all doors, windows, and other openings in room or enclosure are tightly closed.
Tightly close all openings.
Step 2. Check operation of TEMPERATURE control potentiometer.
Set control to fully WARM then, if condition improves, adjust properly.
Step 3. Check that discharge and intake louvers are properly adjusted.
Adjust louvers properly.
Step 4. Check that excessive cold, outside air is not being introduced through fresh air damper.
Fully close damper, then, if condition improves, adjust properly.
Section Ill MAINTENANCE PROCEDURES
Operator maintenance is limited to the adjustments performed during operational checks. See paragraphs 2-6