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Mfg. Since 6/10 Model SB1044
-5-
INSTRUCTIONS
Troubleshooting
Little or no cutting
fluid is being
pumped. Pump and
motor may also
vibrate or be noisy.
1.
No power; voltage is incorrect.
1.
Switch power supply ON/verify machine and pump
voltages match.
2.
Blown fuse/tripped circuit breaker
at main panel.
2.
Correct the cause of overload, then reset/replace
fuse or breaker.
3.
Coolant level is too low, and pump
cavitation is occurring.
3.
Fill coolant tank with a minimum of four gallons of
cutting fluid.
4.
Coolant is incorrect, or is too thick
and incorrectly mixed.
4.
Use water-soluble cutting fluid, or add water to
lower fluid viscosity.
5.
Pump is operating in reverse.
5.
Pump power supply wires are connected out of
phase. Swap any two pump power supply power
leads.
6.
Motor or cover is loose.
6.
Tighten any loose fasteners.
Debris is obstructing pump suction
or impeller is damaged.
Remove pump, remove impeller cover, clean and
replace as required.
8.
Plug or receptacle is corroded or
mis-wired.
8.
Clean/retighten contacts; correct the wiring.
9.
Break or short in wiring; or loose
connections.
9.
Trace/replace broken or corroded wires; fix loose
connections.
10.
Pump ON/OFF switch at fault.
10.
Replace switch.
11.
Motor connection wired incorrectly.
11.
Wire motor correctly (refer to inside junction box
cover or manual).
12.
Emergency stop button is at fault.
12.
Reset or replace emergency stop switch assembly.
13.
Thermal relay has tripped.
13.
Improve pump motor cooling and airflow.
Disconnect machine from power, manually reset
thermal relay, and slightly turn-up trip setting.
14.
Transformer is at fault.
14.
Test/replace transformer.
15.
Contactor not energized/has poor
contacts.
15.
Test all legs for power, test field coil and replace if
at fault.
16.
Motor at fault.
16.
Test for shorted windings, bad bearings and repair
or replace.
7.
7.
Symptom Possible Cause Possible Solution