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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334946C
