Table 3-2. Unit Preventive Maintenance Checks and Services (PMCS)
Item To Be
Test each heating element (2) per para.
and Heater Cutout
Switch - Continued.
Inspect wire leads for heater elements (2)
and heater cutout switch for cracked or
burned insulation and for loose connect-
Check heating elements (2) for cracked
or damaged surfaces.
Inspect heater relay for cracked, burned,
or loose wire leads.
Remove conditioned air louver per para.
Check that all drain holes in drain pan
are clear and not clogged. Clean any
clogged drain holes and remove any
debris from drain pan.
Inspect all drain tubing for cuts and
Check for loose or missing tube clamps.
Check for broken or leaking elbows and
Inspect for loose or missing hardware.
Inspect scrolls for dents, cracks, or
Check for loose or missing mounting