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Fluid inspection lens is
clear with no bubble at
start, when working or
shut down.
Air outlet is not cold,
condenser inlet is not
hot, condenser outlet
is like environment
temperature, air
intake duct is warm
and the side pressure
is low.
No bubble at start and
after shut down, a few
bubbles appear when
working with long
strings of oil dripping
and oil stain
sometimes.
Note： The above mentioned outcomes all happen on hot days. Owing to the external conditions, etc,
sometimes it‘s hard to judge the condition of fluid inspection lens, so pay attention to the high and side
pressure and fluid inspection lens at the same time when filling refrigerant.
(9) Cautions while disassembling the pipeline system
①. The joints disassembled from the pipelines must be sealed in time to make the inner system exposed
to air for a short time as possible, avoiding the wet air from entering the system.
②. Please dip some drops of refrigerant oil onto the O-type gasket before assembling the pipelines.
③. While assembling or disassembling the pipe joint, two spanners must be strong in an
opposite direction to avoid distorting the pipe.
④. The following is the reference torques for screwing down the pipeline joint:
(10) If you find the electromagnetic clutch of the compressor attracts and disengages frequently, that is
because the condenser is too dirty, there is some air in the system or the refrigerant is overfull to make too high
pressure, the air-conditioner must be shut down at once and be repaired by professional maintenance people.
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