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PROBLEM
PROBLEM
PROBLEM
CAUSE
CAUSE
CAUSE
SOLUTION
SOLUTION
SOLUTION
Check electric motor rotation.
Both motor and hydraulic pump
must rotate counterclockwise
when viewed from shaft end.
If rotation is incorrect, reverse
leads L1 and L2. See Connect
Connect
Connect
Electrical
Electrical
Electrical Cord
Cord
Cord in Operation
manual.
Check dipstick to ensure that
hydraulic reservoir is properly
filled (see Operation manual).
Check that inlet fitting is fully
tight, to ensure no air is leaking
into the pump inlet.
Pump is not primed or lost its
prime.
To prime pump, run unit at
lowest pressure setting and
slowly increase pressure. In
some cases it may be necessary
to remove motor cover and
drive belt to allow for manual
(counterclockwise) rotation of
hydraulic pump. Turn fan pulley
by hand. Verify oil flow by
removing oil filter to see flow
into filter manifold. Reinstall
oil filter. Do NOT operate unit
without a properly installed oil
filter.
Screeching noise is characteristic
of cavitation and is normal at
initial startup for a maximum of
30 seconds.
If noise continues longer than
30 seconds, press
to shut
off the motor. Check that the
inlet fittings are tight and that
the pump has not lost its prime.
Hydraulic fluid is too hot.
Ensure that the reservoir is
properly serviced. Improve
ventilation to allow more
efficient heat dissipation.
Electric motor operating in
wrong direction for 3 Phase
system.
Motor must operate
counter-clockwise from pully
end.
Hydraulic pump does not
develop pressure. Low or zero
pressure with screeching noise.
Drive belt loose or broken.
Check drive belt condition.
Replace if broken.
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