PREVENTIVE MAINTENANCE (TO BE PERFORMED BY TRAINED SERVICE PROVIDERS ONLY)
23
WARNING! TURN OFF CASE BEFORE PERFORMING PREVENTIVE MAINTENANCE!
PREVENTIVE
MAINTENANCE
FREQ.
INSTRUCTIONS
Case Exterior
Quarterly Condensing Coil:
Remove side panel (by lifting up and off).
Use air pressure or industrial strength vacuum; clean dust and dirt that
may collect on the Condenser Coil. Take care to NOT allow dust to
become airborne. Use wet rags to cover area where dust will flow
when air pressure is applied.
Caution! Coil fins are sharp. Handle with care!
Replace front panel to case.
Quarterly Refrigeration Package/Compressor Area:
Caution! Be certain to
disconnect power from case before cleaning refrigeration package!
Warning! Evaporator Pan Is HOT! Disconnect power from case and
allow to cool before cleaning evaporator pan!
Slide/Roll compressor package out from under case.
See
REFRIGERATION FUNDAMENTALS
section for in-depth
instructions on accessing the evaporator pan.
Use a scrub-brush and a de-scaling solution such as CLR® (to prevent
corrosion, lime and rust). Follow instructions as to proper dilution,
safety precautions and scrubbing method.
After thoroughly cleaning pan with scrub-brush and solution, rinse
thoroughly with clean water (in spray bottle) and wipe dry with sponge
or paper towel.
Use moist cloth to wipe off dust & debris that collects on various parts
(fans, sight glass, overflow pan, etc.).
Slide refrigeration assembly back under case.
Replace front panel and lower grille via hooks (no screws required).
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.
Case Interior
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 and Fan Shroud.
Use vacuum to clean Evaporator Coils.
Clean Tub, Coil and Drain with warm water, clean cloth, brush and
mild soap solution.
Remove any debris that may clog drain.
Clean Fan Blades, Motors and Brackets by wiping down with moist
cloth.
Quarterly
Honeycomb:
Check honeycomb air diffuser to determine whether it is
dirty. If dirty, remove from case. See
MAINTENANCE FUNDAMENTALS -
HONEYCOMB AIR DIFFUSERS (SERVICE TECHNICIANS ONLY)
section of this manual (next page) for cleaning specifics.
