Wren H Series, Operation Manual

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TROUBLE SHOOTING GUIDE
TRO UBLE PROB ABLE CAUS E S OLU TION
Piston will not advance
or retract Couplers are not securely attached
to the tool or pump Check the coupler connections and make
certain that they are connected
Coupler is defective
Replace any defective Coupler
Defective remote control unit
Dirt in the direction-contol valve o
the pump unit
Disassemble the pump and clean the
direction-control valve
Replace the button and/orcon trol pendent
Piston will not retract
Hose connections reversed
Make certain the advance on the pump is
connected to the advance on the tool and
retract on the pump is connected to the
retract on the tool
Retract pin and/or spring broken
Retract hose n ot connected
Replace the broken pin and/or spring
Connect the retract hose securely
Cylinder will not build up
pressure Piston Seal and/or End Plug Seal leaking Replace any defective o-ring
Replace any defective Coupler
Coupler is defective
Square Drive will n ot turn Grease or dirt build up in the teeth of
the Ratchet an d Segment Pawl
Disassemble the Ratchet and clean the
grease or dirt out of te teeth
Worn o r broken teeth on Ratchet an
/or Segment Pawl
Replace any worn or damaged parts
Pump will not build up
pressure
Defective relief valve
Inspect,adjust or replace the relief valve
Electric power source is too lo w
Make certain the amperage,voltage and
any extension aord size comply with the
pump manual requirements
Defective Gauge
Replace the Gauge
Low oil level
Check and fill the pump reservoir
Clogged filter
Inspect,clean and/or replace the pump filter
Nut Returns with retract
stroke Ball Plungers are not e ngaging the
Drive Sleeves Thread the Ball Pungers to the correct
depth in the Housing
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