Ingersoll-Rand Thermo King CRR DF MPC2000, Maintenance Manual

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137
Structural/Accessory Maintenance
Mounting Bolts
Check and tighten all unit, compressor, and fan motor mounting bolts during pretrip inspections and every
1,000 operating hours. Unit mounting bolts should be tightened to a torque value of 204 N.m (150 ft-lb).
Compressor and fan motor mounting bolts should be tightened to a torque value of 20 to 21 N.m (15 to 20
ft-lb).
Unit Inspection
Inspect the unit during unit pretrip inspection and every 1,000 operating hours for loose or broken wires
or hardware, compressor oil leaks, or other physical damage which can affect unit performance and
require repair or replacement of parts.
Condenser Coil
Clean the condenser coil by blowing low pressure compressed air or a medium pressure warm water
spray from the inside of the coil outward (opposite direction of normal airflow). Inspect coil and fins for
damage and repair if necessary.
If a build up of salt or debris is present on the condenser coil, the coil should be cleaned using a mild
alkaline cleaner with a pH of 9.5 to 10.5. For example, a 2-3% solution of SIMPLE GREEN® would
make a suitable cleaning solution. Apply the solution using a pressure spray/wash type apparatus. Spray
the condenser coil thoroughly from both the inside and outside of the coil. Always thoroughly rinse the
coil with a fresh water spray.
1. Tighten Unit Mounting Bolts
2. Tighten Compressor, Condenser Fan and
Evaporator Fan Mounting Bolts
Figure 42: Mounting Bolts
CAUTION: Air pressure or water spray must not be high enough to damage coil fins.
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BEC851