Greenheck ERCH - Energy Recovery Unit with Packaged DX (468151) - Manual (Page 33)

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Energy Recovery Unit with Packaged DX
This unit requires minimal maintenance to operate properly . To ensure proper operation and longevity, the
following items should be completed . The items in this list assume a relatively clean air environment, and may
require attention more frequently in a dirty or dusty area . If this unit contains an Indirect Gas Heater, refer to the
Installation, Operation and Maintenance Manual provided with the unit for maintenance purposes . A Certified
Technician should complete all refrigerant systems checks .
SAFETY CAUTION!
Use caution when removing access panels or other unit
components, especially while standing on a ladder or
other potentially unsteady base . Access panels and unit
components can be heavy and serious injury may occur .
SAFETY DANGER!
Electric shock hazard . Can cause injury or death . Before
attempting to perform any service or maintenance,
turn the electrical power to unit to OFF at disconnect
switch(es) . Unit may have multiple power supplies .
ROUTINE MAINTENANCE
Monthly
External Filter Check for cleanliness – clean if required
Internal Filter Check for cleanliness – replace if required
Condensate Drain Inspect and clean – refill with water
Semi-Annually
Fan Belts Check for wear, tension, alignment
Energy Recovery Wheel Check for cleanliness – clean if required
Check for belt wear
Check pulley, bearings, and motor
Annually
It is recommended that the annual inspection and maintenance occur at the start of the cooling season . After
completing the checklist, follow the unit start-up checklist provided in the manual to ensure the refrigeration
system operates in the intended matter .
Lubrication Apply lubrication where required
Dampers Check for unobstructed operation
Motors Check for cleanliness
Fan Belts Check for wear, tension, alignment
Motors Check for cleanliness
Blower Wheel & Fasteners Check for cleanliness
Check all fasteners for tightness
Check for fatigue, corrosion, wear
Bearings Check for cleanliness
Check set screws for tightness
Energy Recovery Wheel Check for cleanliness – clean if required
Check belt for wear
Check pulley, bearings, and motor
Door Seal Check if intact and pliable
Evaporator Coil Maintenance Check for cleanliness – clean if required
Condenser Coil Maintenance Check for cleanliness – clean if required
Condensate Drain Inspect and clean – refill with water
Condensing Fan Blades and Motor Check for cleanliness
Check all fasteners for tightness
Check for fatigue, corrosion, and wear
Wiring Connections Check all connections for tightness