Troubleshooting
PROBLEM CAUSE SOLUTION
Checkelectricmotorrotation.Both
motor and hydraulic pump must
rotate counterclockwise when
viewed from shaft end. If rotation
is incorrect, reverse leads L1 and
L2. See
Connect Electrical 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 o il 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. Chec k that the inlet fittings
are tight and that the pump has not
lost its prime.
Hyd
raulic fluid is too hot. Ensure that the reservoir is properly
serviced. Improve ventilation to
allow more efficient heat dissipation.
El
ectric motor operating in wrong
di
rection for 3 Phase system.
Mo
tor must operate counter-
cl
ockw ise 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.
334946A 39
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