Check Air Conditioner; Check Air Conditioner Piping - Hitachi ZW180 Operator's Manual

2
Check Air Conditioner --- every 6 months
Check the air conditioner switch panel, air conditioner unit,
and condenser mounting areas for any abnormality, and check
hoses for any damage.
NOTE: When the season to use the air conditioner comes
close, check the air conditioner to get it ready to use at
all times. When not required to use the air conditioner
for a long period of time, operate the air conditioner
in the cooling mode once a week to prevent the lack of
lubrication.
WARNING: Avoid steam cleaning
Do not clean the compressor and receiver tank with
steam. The refrigerant gas pressure will increase, pos-
sibly causing the hoses to break.
3
Check Air Conditioner Piping --- every 6 months
Check the piping for abnormal deformation and/or damage. If
a pipe joint is contaminated with oil, refrigerant leakage may
be suspected. Check for leakage using a gas leak detector.
CAUTION: If any leakage is found, repair or replace
the corresponding pipes. Tighten the joint bolts to
specification.
MAINTENANCE
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