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(7) Compressor Drive Belt Replacement
Safety Precautions
Stopping only the indoor unit is extremely dangerous because the engine
may suddenly start if the customer operates the remote controller on the
indoor unit side. Before carrying out work on the inside of the outdoor unit,
make sure you turn off the power supply circuit breaker of the outdoor unit.
(However, if a system controller or other centralized control device is being
used, an abnormal communications error may be generated.) Alternatively,
perform the STOP operation for the outdoor unit.
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Replacement Period
Replace the compressor drive belt every 5 years or 10,000 operating hours, whichever comes first.
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Preparations
The following tools, gauges, and parts are required for doing this work. Prepare them before starting.
Name
Specification
Q’ty
Remarks
Parts
Compressor drive belt
638-018-9625
Tools,
Gauges
Open end or closed wrench
19mm
Socket wrench
10mm, 19mm
Torque wrench
450QL and 900QL
Linear scale
Tension meter
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Preparation
1) Stop the engine. (Refer to Section 1. (4) “
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Engine Stop.”)
2) Remove the front and rear panels of the unit.
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Belt removal
1) Loosen the compressor bracket securing bolts. (3 locations indicated by arrows in Figure 1)
Figure 1 Compressor bracket securing bolts
