Service manual

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1.3.2 Checking during operation
1. Check the compressor, fan, pipes, etc. for abnormal noise and vibration.
2. Check the refrigerant for shortage.
3. Check the refrigerant for moisture inclusion.
4. Check operating conditions with the pilot lamps.
Method of check
Visual and auditory
Visual
 Bubbles in moisture indicator on PULLDOWN or
FROZEN operation may mean shortage of refrigerant in the
system.
 Charge specified amount of refrigerant to the system, if inside
temperature cannot maintain the setting temperature due to
shortage of refrigerant.
 Please note, there will be bubbles in the moisture indicator
after the unit starts and in chilled operation. This is normal.
Visual
The moisture indicator colour;
Green: normal
Yellow: abnormal.
Visual
Checking items(precautions)
1.3.3 Procedure after operation
(1) Turn off the UNIT ON/OFF key e, and turn off
the circuit breaker w.
(2) Close the control box cover tightly.
(3) Stow the power cable.
Disconnect the power plug q, and stow the
power cable directing the plug opening
downward to prevent sea water or rain water
from collecting in the power plug.
q
e
w
Liquid moisture indicator
qPower plug