PREVENTIVE MAINTENANCE (TO BE PERFORMED BY TRAINED SERVICE PROVIDERS ONLY)
25
WARNING! TURN OFF CASE BEFORE PERFORMING PREVENTIVE MAINTENANCE!
FREQ.
AREA / INSTRUCTIONS
Quarterly Tub, Coil, Drain, Evaporator Fan Blades, Motors, Brackets:
Disconnect power from the case before cleaning the tub, coil, fan, motor and drain area!
Remove decking, sub-deck (if any) and fan shroud.
Remove any debris that may clog drain.
Use
WASH
spray bottle on tub, coil, drain, trough, tub, fan blades, motors and other
components. Clean with paper towel or wet/dry vacuum to remove residue.
Use
RINSE
spray bottle on components.
Replace decking.
Quarterly Condensing Coil (Self-Contained Units Only):
Remove lower panel (by lifting it up and off).
Condenser coil brush may be used to dislodge dust, dirt
and debris from condenser coil.
Slide condensing package out from underside of case
(taking care to NOT slide out too far and damage hoses).
Use air pressure or industrial strength vacuum; clean dust
and dirt that may collect on condenser coil.
DO NOT allow dust to become airborne. Use wet cloths
or paper towels to cover area where dust will fly when air
pressure is applied.
Caution! Coil fins are sharp. Handle with care!
Replace lower panel in reverse order it was removed.
See sample condenser coil cleaning brushes at right.
Quarterly Refrigeration Package/Compressor Components (Self-Contained Units Only):
Caution! Disconnect power from case before cleaning!
Warning! Hot gas loop is HOT! Allow to cool before cleaning evaporator pan and wiping down
hot gas loop!
Slide/roll compressor package out from under case.
See
REFRIGERATION FUNDAMENTALS: SELF-CONTAINED UNIT ILLUSTRATED PARTS
BREAKDOWN
section in manual for breakdown of condensate package.
Clean evaporator pan with scrub-brush and a de-scaling solution (to prevent corrosion, lime and
rust); follow instructions as to proper dilution, safety precautions and scrubbing method. After
cleaning pan with scrub-brush and solution, use
RINSE
spray bottle on evaporator pan.
Use
WASH
spray bottle on tub, coil, drain, fans, fan blades, sight glass, overflow condensate
pan, motors and other components. Wipe down and remove residue with paper towel or wet/dry
vacuum. Use
RINSE
spray bottle on components. Wipe with paper towel.
Slide refrigeration assembly back under case.
Replace side panel.
Quarterly Under Case Cleaning: Once refrigeration package is clear of unit, vacuum under case to remove
all dust and dirt that may collect under case.
Quarterly Honeycomb: See next page for cleaning instructions.
