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MAINTENANCE
Recommended Maintenance Schedule —
The fol-
lowing are only recommended guidelines. Jobsite conditions
may dictate that maintenance schedule is performed more often
than recommended.
Every month:
• Check condenser coils for debris, clean as necessary.
Every 3 months:
• Check all refrigerant joints and valves for refrigerant
leaks, repair as necessary.
• Check condenser coils for debris.
• Check all condenser fans for proper operation.
Every 12 months:
• Check all electrical connections, tighten as necessary.
• Inspect all contactors and relays, replace as necessary.
• Check condition of condenser fan blades and ensure they
are securely fastened to the motor shaft.
Microchannel Heat Exchanger (MCHX) Con-
denser Coil Maintenance and Cleaning
Recommendations
Routine cleaning of coil surfaces is essential to maintain
proper operation of the unit. Elimination of contamination and
removal of harmful residues will greatly increase the life of the
coil and extend the life of the unit. The following steps should
be taken to clean MCHX condenser coils:
1. Remove any foreign objects or debris attached to the
coreface or trapped within the mounting frame and
brackets.
2. Put on personal protective equipment including safety-
glasses and/or face shield, waterproof clothing and
gloves. It is recommended to use full coverage clothing.
3. Start high pressure water sprayer and purge any soap or
industrial cleaners from sprayer before cleaning condens-
er coils. Only clean, potable water is authorized for clean-
ing condenser coils.
4. Clean condenser face by spraying the core steady and
uniformly from top to bottom while directing the spray
straight toward the core. Do not exceed 900 psig or 30 de-
gree angle. The nozzle must be at least 12 in. from the
core face. Reduce pressure and use caution to prevent
damage to air centers.
CAUTION
Do not apply any chemical cleaners to MCHX condenser
coils. These cleaners can accelerate corrosion and damage
the coil.
CAUTION
Excessive water pressure will fracture the braze between
air centers and refrigerant tubes.