mycom J Series User Manual

2205B0JE-DA-J-N_2014.05.
6 Troubleshooting
Screw Compressor J-series
6-3
Trouble Direct causes Factors Actions
04 Low
oil-supply
pressure
Defect in hydraulic
pressure detection
feature.
Malfunction in
hydraulic pressure
protection device,
pressure sensor,
relays, etc.
Identify malfunctioning devices,
examine their causes, and take
measures.
Then, replace malfunctioning
devices.
Clogging in
connecting pipes
Remove clogging. Check oil
contamination level and replace oil
as necessary.
05 Abnormally
high
pressure
(abnormal
discharge
pressure)
Heat exchange
failure at condenser
(heat exchanger)
Contaminated and
blocked heat trans-
mission tubes, fins,
etc.
Clean and wash them.
Use solvent to clean depending on
contamination.
Malfunction of fan
motor,
thermo-switch,
water spray bars,
cooling water
pumps, etc.
(including waterfall)
Identify malfunctioning devices,
examine their causes, and take
measures.
Then, replace malfunctioning
devices.
Flow volume
adjustment fault for
cooling water, brine,
etc.
If valve is manually adjusted,
readjust it.
If an automatic control valve
(including wax valve) is used,
examine its cause and take
measures.
Other insufficient
circulation volume
problems of cooling
water, etc.
Inspect for clogging and
contamination of circulation route
filters, and take measures.
Inspect for leak in circulation routes,
and take measures.
Inspect water supply routes and
construction, and take measures.
If frozen, improve by insulation or
heating.
Poor performance
in heat exchanger
If the trouble is caused by change in
operating conditions, re-examine
the conditions to improve.
If the trouble is caused by change in
installation environment, improve
the environment if possible.
For both cases, if it is difficult to
improve, add more heat exchangers
or increase their sizes.
Uncondensed gas
in the system
Leak on low
pressure side
* Cases of erosion
of compressor’s
suction
thermometer
protection pipe
have also been
confirmed.
Inspect for leak, and take necessary
measures.
Then, air purge the heat exchanger.

mycom J Series Specifications

General

Brand	mycom
Model	J Series
Category	Air Compressor
Language	English