![background image](http://html1.mh-extra.com/html/gardner-denver/vst225/vst225_installation-operating-and-service-manual_3899650083.webp)
13-17-609 Page 82
15-1
SECTION 15
TROUBLESHOOTING
Air/oil under pressure will cause severe personal injury or death. Shut down
compressor, relieve system of all pressure, disconnect, lockout and tagout
power supply to the compressor package before removing valves, caps, plugs,
fittings, bolts and filters.
SYMPTOM
POSSIBLE CAUSE
REMEDY
1.
Main disconnect open
1.
Check and reset.
Compressor
fails to start
2.
Blown fuses in control box
2.
Replace fuse.
3.
Variable Frequency Drive fault
active
3.
Investigate cause of fault and press
“STOP/RESET” button to reset.
4.
Shutdown event sensed by
controller not re-set
4.
Investigate cause of fault and press
“STOP/RESET” button to reset.
5.
Read error message on control
panel
5.
Take appropriate action. See
Manual 13-17-600.
6.
Remote Contact is open
6.
Replace switch or jumper.
7.
Compressor lock-up
7.
Confirm compressor shaft is not free
to turn, then call Gardner Denver for
further instructions. See
“High
Discharge Air Temperature
”, this
section.
Compressor
starts but
stops after a
short time
1.
High discharge temperature
1.
See
“High Discharge Air
Temperature,
” this section.
2.
Low oil injection pressure
2.
Check oil level.
Check oil filter dP.
3.
Blown fuse in control box
3.
Replace fuse (investigate if fuses
continue to blow).
4.
Variable Frequency Drive
overload sensor tripped
4.
Reset and investigate cause of
overload.
5.
Compressor lock-up
5.
Confirm compressor shaft is not free
to turn, then call Gardner Denver for
further instructions.