
-60-
Model G0887 (Mfd. Since 01/19)
Review the troubleshooting procedures in this section if a problem develops with your machine. If you need
replacement parts or additional help with a procedure, call our Technical Support.
Note: Please gather the
serial number and manufacture date of your machine before calling.
SECTION 7: SERVICE
Troubleshooting
Motor & Electrical
Symptom
Possible Cause
Possible Solution
Hydraulic
motor does not
start, or power
supply breaker
immediately
trips after
startup.
1. Emergency Stop button depressed/at fault.
2. Control panel or electrical cabinet power
switch turned OFF/at fault.
3. Blown fuse.
4. Incorrect power supply voltage or circuit size.
5. Plug at fault/wired incorrectly.
6. Wheel cover safety door limit switch
engaged/at fault.
7. Blade tension limit switch engaged/at fault.
8. Power supply circuit breaker tripped or fuse
blown.
9. Hydraulic motor thermal overload relay
tripped/at fault.
10. Hydraulic motor contactor not energized/poor
contacts/at fault.
11. Wiring broken, disconnected, or corroded.
12. Electrical cabinet or control panel circuit
board at fault.
13. Hydraulic motor at fault.
1. Rotate button to reset; test/replace if at fault.
2. Turn power switch ON; test/replace if at fault.
3. Replace fuse/ensure no shorts.
4. Ensure correct power supply voltage and circuit size.
5. Test for good contacts; correct wiring.
6. Close wheel cover/replace switch.
7. Tension blade correctly (
Page 36)/replace switch.
8. Ensure circuit is sized correctly and free of shorts.
Reset circuit breaker or replace fuse.
9. Reset; adjust trip load dial; replace if at fault.
10. Test all legs for power; replace if at fault.
11. Replace/fix broken, disconnected, or corroded wires.
12. Inspect/replace if at fault.
13. Test/repair/replace.
Headstock
does not raise/
lower.
1. Incoming power supply out of phase.
1. Switch any two of three incoming power supply wires
on plug.
Vise does not
close/open.
1. Table motor thermal overload relay tripped/at
fault.
2. Table motor contactor not energized/poor
contacts/at fault.
3. Wiring broken, disconnected, or corroded.
4. Electrical cabinet or control panel circuit
board at fault.
5. VFD at fault.
6. Table motor at fault.
1. Reset; adjust trip load dial; replace if at fault.
2. Test all legs for power; replace if at fault.
3. Replace/fix broken, disconnected, or corroded wires.
4. Inspect/replace if at fault.
5. Inspect VFD; replace if at fault.
6. Test/repair/replace.
Coolant pump
motor does not
start.
1. Coolant pump motor thermal overload relay
tripped/at fault.
2. Coolant pump motor contactor not energized/
poor contacts/at fault.
3. Wiring broken, disconnected, or corroded.
4. Electrical cabinet or control panel circuit
board at fault.
5. Coolant pump motor at fault.
1. Reset; adjust trip load dial; replace if at fault.
2. Test all legs for power; replace if at fault.
3. Replace/fix broken, disconnected, or corroded wires.
4. Inspect/replace if at fault.
5. Test/repair/replace.
Summary of Contents for G0887
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