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© SPX FLOW, Inc.
Form No. 102371
Rev. 1 November 20, 2019
TROUBLE-SHOOTING GUIDE
Refer to Parts List #100353 and the following hydraulic schematic when using this trouble-shooting guide.
IMPORTANT: Any repair work or trouble-shooting should be performed by qualified personnel familiar with
this equipment. Use the proper gauges and equipment when trouble-shooting.
NOTE: Depending on the type of pump, it is often best to check for leaks by using a hand pump and
applying pressure to the suspect area without the motor running. Watch for leaking oil and follow it back to
its source.
PROBLEM
CAUSE
SOLUTION
Motor Does Not Run
WARNING
: Disconnect
power supply before removing
cover. Any electrical work should
be performed by a qualified
electrician.
1. Pump not tuned to “On” position
2. Unit is not plugged in
3. No voltage supply
4. Broken lead wire or defective
power cord plug
5. Defective switches
6. Defective motor
7. Thermal protector switch inside
motor housing is open.
8. Defective starter relay
1. Flip toggle switch to run position,
push start button
2. Plug in unit
3. Check line voltage
4. Replace defective parts
5. Check switches
6. Replace motor
7. Wait for motor to cool before
restarting
8. Replace defective parts
Pump is not delivering oil or
delivers only enough oil to
advance cylinder(s) partially or
erratically.
1. Oil level too low
2. Pump needs to be primed
3. Loose fitting coupler to cylinder
1. Fill reservoir to within 1" of filler
plug with all cylinders retracted
2. Prime pump
3. Check quick-disconnect couplings
to cylinders
Inspect couplers to insure that
they are completely coupled
Occasionally couplers have to be
replaced because the ball check
does not stay open due to wear
Bleed the system
TO VALVE
MAX. PRESSURE SAFETY
RELIEF VALVE
10,100/10,700 PSI
EXTERNAL PRESS.
REGULATOR VALVE
10,000/10,200 PSI
AIR
BLEED
VALVE
STRAINER
SUPER
CHARGE
VALVE
140/160 PSI
UNLOADING VALVE
850/950 PSI
