Water Mixed In The Circuit; Poor Compressor Performance - Kubota KX080-3 Workshop Manual

WSM KX080-3 Service

4) Water mixed in the circuit

Phenomenon
Gradual drop to negative pressure at
low-pressure side after a certain period
of use

5) Poor compressor performance

Phenomenon
Too high pressure at low-pressure
side and too low pressure at high-
pressure side
Same pressure levels at high-pressure
and low-pressure sides soon after the
air conditioner is turned off
Possible cause
Water mixed (Water mixed in the refrig-
eration cycle freezes at the extension
valve port, which temporarily blocks the
refrigerant flow. After the ice has
thawed, the normal state resumes.)
(1) (2)
Possible cause
Compressor in trouble
(1) (2)
VI-S-15
VI Air Conditioner
Correction
Do the complete vacuuming before
charging fresh refrigerant into the
receiver (dryer). This helps keep off
water.
(1) Low-pressure side
(2) High-pressure side
Correction
Check and repair the compressor as
required.
(1) Low-pressure side
(2) High-pressure side