Greenheck Packaged DX Module (474681) - Manual (Page 15)

15 Packaged DX Module for Make-Up Air Unit
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.
Routine Maintenance 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.
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.
Reference - component location
Model DGX Make-Up Air Unit
Outdoor
Air Intake
Model DGX Make-Up Air Unit
Unit Control Center
Condenser Fans
and Condenser Coil
Evaporator Coil
Direct Gas-Fired Burner
Model IGX Make-Up Air Unit
Outdoor
Air Intake
Model IGX Make-Up Air Unit
Unit Control Center
Condenser Fans
and Condenser Coil
Evaporator Coil
Indirect Gas-Fired
Furnace
Model MSX Make-Up Air Unit
with Electric Heat
Outdoor
Air Intake
Model MSX with Electric Heat
Unit Control
Center
Condenser Fans
and Condenser Coil
Evaporator Coil
Outdoor
Air Intake
Model DGX Make-Up Air Unit
Unit Control Center
Condenser Fans
and Condenser Coil
Evaporator Coil
Direct Gas-Fired Burner
Outdoor
Air Intake
Model IGX Make-Up Air Unit
Unit Control Center
Condenser Fans
and Condenser Coil
Evaporator Coil
Indirect Gas-Fired
Furnace
Outdoor
Air Intake
Model MSX with Electric Heat
Unit Control
Center
Condenser Fans
and Condenser Coil
Evaporator Coil
®