Ingersoll-Rand 900829, Maintenance Manual

Page: 81 / 142

79
Structural Maintenance
Evaporator Coil
Clean the coils during scheduled maintenance
inspections. Remove any debris (e.g., leaves or
plastic wrap) that reduces the air flow. Clean dirty
coils with compressed air or a pressure washer. Be
careful not to bend the fins when cleaning a coil.
If possible, blow the air or water through the coil
in the direction opposite the normal air flow.
Repair bent fins and any other noticeable damage.
Condenser Coil
Clean the coils during scheduled maintenance
inspections. Remove any debris (e.g., leaves or
plastic wrap) that reduces the air flow. Clean dirty
coils with compressed air or a pressure washer. Be
careful not to bend the fins when cleaning a coil.
If possible, blow the air or water through the coil
in the direction opposite the normal air flow.
Repair bent fins and any other noticeable damage.
Unit Mounting Bolts
Periodically check and torque the unit mounting
bolts.
Figure 80: Evaporator
Figure 81: Condenser
Maintenance Inspection Schedule
Procedures Weekly Monthly
Semi-
Annual Annually
Visually inspect unit and refrigerant hoses for fluid leaks. • • • •
Visually inspect unit for damaged, loose or broken parts. • • • •
Clean defrost drains. • • • •
Inspect belts for condition and proper tension. • • •
Clean entire unit including evaporator coil and condenser coil. • • •
Check all unit mounting bolts, brackets, lines, hoses, etc. • •
WARNING: Take precautions to ensure
the unit will not accidentally start while
you are servicing the system.
CAUTION: The air pressure should not
be high enough to damage coil fins.
AMA523
AMA1003