![background image](http://html1.mh-extra.com/html/gardner-denver/apex25-30a/apex25-30a_operating-and-service-manual_3576437081.webp)
13-25-608 Page 80
SECTION 13
TROUBLESHOOTING
SYMPTOM
POSSIBLE CAUSE
REMEDY
Compressor fails to start
1.
No electrical power.
1.
Check main disconnect,
fuses and supply line.
2.
[FS] Motor starter
overload relay tripped.
2.
Reset and investigate
cause of overload.
3.
Pressure in reservoir.
3.
Inspect unload valve.
4.
Wrong lead connections
4.
Change leads.
5.
Emergency stop
depressed.
5.
Release button.
6.
Unacknowledged fault
6.
Clear fault at controller
Compressor starts but
stops after a short time
1.
High separator/ high
compressor temperature
shutdown event
1.
See
“High Discharge Air
Temperature,
” this
section.
2.
[FS] Delta motor wiring
configuration is incorrect.
2.
Inspect and correct.
3.
Blown fuse in starter/
control box.
3.
Replace fuse (investigate
if fuses continue to blow).
4.
Motor starter or vfd
overload relay tripped.
4.
Reset and investigate
cause of overload.
5.
Fast pressure buildup due
to open inlet valve
5.
Inspect inlet valve and
unloader valve operation.
Replace if faulty.
6.
7.
High oil viscosity.
Aftercooler is frozen.
6.
7.
Review oil type for
ambient temperature or
provide site heating.
Thaw out. Operation
below 32°F is not allowed.
Compressor does not
unload (or load)
1.
Improperly adjusted
control.
1.
Refer to Control Manual
13-17-600 and adjust
control.
2.
Faulty inlet valve or
unloaded valve solenoid.
2.
Inspect and/or replace
faulty component.
Compressor cycles from
load to unload
excessively
1.
Insufficient receiver
capacity.
1.
Increase receiver size.
2.
Restriction in service
piping.
2.
Inspect and clean service
piping.
3.
4.
Pressure range too
narrow.
[Mo] Feed pressure
regulator not adjusted
3.
4.
Extend pressure range.
Inspect, adjust or replace
regulator.
Compressor starts too
slowly
1.
[FS] Wye Delta switch
time set too long.
1.
Contact your Gardner
Denver distributor.
Summary of Contents for APEX25-30A
Page 11: ...13 25 608 Page 10 Figure 1 2 COMPRESSOR ILLUSTRATION VARIABLE SPEED 304USC797 A Ref Drawing...
Page 12: ...13 25 608 Page 11 Figure 1 3 COMPRESSOR ILLUSTRATION FIXED SPEED 305USC797 A Ref Drawing...
Page 27: ...13 25 608 Page 26 Figure 4 2 WIRING DIAGRAM VS 230 VOLT 306USC546 01 Ref Drawing Page 1 of 4...
Page 28: ...13 25 608 Page 27 Figure 4 3 WIRING DIAGRAM VS 230 VOLT 306USC546 01 Ref Drawing Page 2 of 4...
Page 29: ...13 25 608 Page 28 Figure 4 3 WIRING DIAGRAM VS 230 VOLT 306USC546 01 Ref Drawing Page 3 of 4...
Page 30: ...13 25 608 Page 29 Figure 4 3 WIRING DIAGRAM VS 230 VOLT 306USC546 01 Ref Drawing Page 4 of 4...
Page 31: ...13 25 608 Page 30 Figure 4 3 WIRING DIAGRAM VS 575 VOLT 307USC546 02 Ref Drawing Page 1 of 4...
Page 32: ...13 25 608 Page 31 Figure 4 4 WIRING DIAGRAM VS 575 VOLT 307USC546 02 Ref Drawing Page 2 of 4...
Page 33: ...13 25 608 Page 32 Figure 4 4 WIRING DIAGRAM VS 575 VOLT 307USC546 02 Ref Drawing Page 3 of 4...
Page 34: ...13 25 608 Page 33 Figure 4 4 WIRING DIAGRAM VS 575 VOLT 307USC546 02 Ref Drawing Page 4 of 4...
Page 45: ...13 25 608 Page 44 Figure 4 7 WIRING DIAGRAM FS 575 VOLT 309USC546 01 Ref Drawing Page 1 of 3...
Page 46: ...13 25 608 Page 45 Figure 4 8 WIRING DIAGRAM FS 575 VOLT 309USC546 01 Ref Drawing Page 2 of 3...
Page 47: ...13 25 608 Page 46 Figure 4 8 WIRING DIAGRAM FS 575 VOLT 309USC546 01 Ref Drawing Page 3 of 3...
Page 51: ...13 25 608 Page 50 Figure 4 8 PIPING AND INSTRUMENTATION ILLUSTRATIONJ 301USC797 C Ref Drawing...