Operating Instructions Form No. 102875
TROUBLE-SHOOTING GUIDE CONTINUED -
Pump builds pressure but cannot
maintain pressure.
1. External leaks.
2. Internal or external leakage on
hydraulic cylinder.
3. Leaking control valve or check
valve.
1. Seal leaking pipe fittings with
pipe sealant. Replace leaking
pipes or hoses.
2. Remove the cylinder from
pump. If the pump builds and
maintains full pressure, the
cylinder is defective. Contact a
Power Team Authorized
Hydraulic Service Center.
3. Contact a Power Team Author-
ized Hyd. Service Center.
PROBLEM CAUSE SOLUTION
Pump is not delivering fluid or
delivers only enough fluid to
advance cylinder(s) partially or
erratically.
1. Fluid level too low.
2. Quick disconnect couplings are
not completely coupled.
3. Air in system.
4. Cold fluid or fluid too viscous.
5. Reservoir capacity is too small
for the size of cylinder(s) used.
6. Three phase motor rotating in
wrong direction.
7. PR10 series pump not
connected to correct 12 VDC
polarity.
8. Vacuum in reservoir.
1. Fill reservoir or bladder
according to directions “Filling
The Pump Reservoir Or
Bladder” under “Set-up
Instructions” section
2. Check quick-disconnect
couplings to cylinders to ensure
that they are completely
coupled. Occasionally couplers
have to be replaced because
the ball check does not stay
open due to wear.
3. Refer to the section titled
"Bleeding the System" under
“Set-up Instructions” section.
4. Hydraulic fluid is of a higher
viscosity than necessary.
Change to a lighter fluid.
5. Use smaller cylinder(s) or
larger reservoir.
6. Refer to electrical schematic on
motor.
7. Connect to correct 12 VDC
polarity.
8. Check for plugged vent in filler
plug.
Sheet No. 8 of 8
Rev 10 Date: 02 Mar 2005
Electrical overload protector
keeps tripping.
1. Wired incorrectly. 1. See Service Bulletin #9903PT at
the end of this document.
Pump will not build full pressure. 1. Faulty pressure gauge.
2. Check for external leakage.
3. Improperly adjusted external
pressure regulator setting.
4. Internal or external leakage on
hydraulic cylinder.
1. Calibrate gauge.
2. Seal faulty fittings with sealant.
Replace leaking pipes or hoses.
3. Refer to "Adjusting The
Pressure Regulator Valve"
information under "Adjusting the
Pressure Regulating Controls"
section.
4. Remove the cylinder from the
pump. If the pump builds full
pressure, the cylinder is
defective. Contact a Power
Team Authorized Hyd. Service
Center.