Routine Maintenance; Monthly; Annually - Greenheck DGX Installation, Operation And Maintenance Manual

Routine Maintenance

DANGER
Electric shock hazard. Can cause injury or death.
Before attempting to perform any service or
maintenance, turn the electrical power to the unit
to OFF at disconnect switch(es). Unit may have
multiple power supplies.
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.
This unit requires minimal maintenance to operate
properly. To ensure proper operation and longevity,
the following maintenance schedule should be
followed. The items in this list assume a relatively
clean air environment, and may require attention more
frequently in a dusty or dirty area. If this unit contains
an indirect gas-fired heater, refer to the Installation,
Operation and Maintenance manual provided with
the unit for maintenance purposes. An EPA Certified
Technician should complete all refrigeration systems
checks.
Maintenance Frequency:

Monthly

1. Condensate Drain
Inspect and clean. Refill with water or glycol.

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 manner.
1. Door Seal
Check if intact and pliable.
2. Wiring Connections
Check all connections for tightness.
3. Cabinet
Check entire cabinet, inside and out, for dirt
build-up or corrosion. Remove accumulated
dirt, remove any surface corrosion and coat
the area with appropriate finish.
4. Evaporator Coil Maintenance
Check for cleanliness. Clean if required.
5. Condenser Coil Maintenance
Check for cleanliness. Clean if required.
6. Condensate Drain
Inspect and clean. Refill with water.
7. Condensing Fan Blades and Motors
Check for cleanliness.
Check all fasteners for tightness.
Check for fatigue, corrosion and wear.
®
Maintenance Procedures:
Lubrication
Check all moving components for proper lubrication.
Apply lubricant where required. Any components
showing excessive wear should be replaced to
maintain the integrity of the unit and ensure proper
operation.
Dampers
Check damper (if present) to ensure it opens and
closes properly and without binding. Apply power to
motorized dampers to ensure the actuator opens and
closes the damper as designed.
Packaged DX Module for Make-Up Air Unit
17