SWE90UF-2PB Operation & Maintenance Manual
Too many bubbles
appear during work
Air outlet is not cold
enough, condenser
inlet is not hot
enough, condenser
outlet is like the
environment
temperature, air
intake duct is warm
and the pressure of
high pressure side
is very low.
Check,
repair and
fill
refrigerant
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 very 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 ring 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:
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