21
© SPX
Form No. 1000572
Rev. 0 February 8, 2012
Troubleshooting Guide continued
Problem Cause Solution
Pump builds pressure but
cannot maintain pressure.
1. Fluid leakage.
1. Look for external leaks. If no uid
leakage is visible, the problem is
internal. If using a double-acting
cylinder, remove it from the system
to ensure the leak is not in the
cylinder. Seal leaking pipe ttings
with pipe sealant.
2. Leaking pressure switch seal.
2. Replace pressure switch.
Pump does not build to full
pressure.
1. Faulty pressure gauge.
1. Replace pressure gauge.
2. Check for external leakage.
2. Seal faulty pipe ttings with pipe
sealant.
3. Check external pressure
regulator. Check relief valve
setting.
3. Refer to Adjusting the Pressure
Regulating Valve.
4. Look for internal leakage in
double-acting cylinders.
4. Remove cylinder from pump. If
pump builds full pressure, cylinder is
defective.
5. Inadequate air pressure (air
motor only).
5.
Refer to Initial Setup section.
Erratic action 1. Air in system.
1. Check for leaks. Refer to
bleeding procedure.
2. Internal leakage in attached
components.
2. Refer to manufacture's
information for attached component.
3. Attached component sticking or
binding.
3. Refer to manufacture's
information for attached component.
4. Malfunctioning valve.
4.
Verify connections. Contact
authorized Power Team Service
Center.
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