Thermo King UT-1200, Manual

Page: 149 / 169

149
Structural Maintenance
Unit Inspection
Inspect the unit daily for loose or broken wires or
hardware, engine or compressor oil leaks, loose or
damaged belts, or other physical damage which
might affect unit performance and require repair
or replacement of parts.
Unit and Engine Mounting Bolts
Periodically check and tighten all unit and engine
mounting bolts. Torque the condenser section
mounting bolts to 130-170 ft-lb (176-230 N•m).
Torque the evaporating mounting bolts to 60 ft-lb
(81 N•m). Torque the engine mounting bolts to 50
ft-lb (68 N•m).
Condenser, Evaporator and
Radiator Coils
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 airflow.
Repair bent fins and any other noticeable damage.
Defrost Drains
Clean the defrost drains every 400 operating hours
to be sure the lines remain open.
1. Mounting Bolts
2. Engine Mounting Bolts
Figure 216: Condenser Unit and
Engine Mounting Bolts
1. Mounting Bolts
Figure 217: Evaporator Mounting Bolts
CAUTION: Air pressure should not be
high enough to damage coil fins.