Graco Reactor 2 H-30 Repair Parts page 37

PROBLEM PROBLEM PROBLEM
Hydraulic pump does not develop
pressure. Low or zero pressure
with screeching noise.
334946H
CAUSE CAUSE CAUSE
Pump is not primed or lost its prime.
Screeching noise is characteristic
of cavitation and is normal at
initial startup for a maximum of 30
seconds.
Hydraulic fluid is too hot.
Electric motor operating in wrong
direction for 3 Phase system.
Drive belt loose or broken.
Troubleshooting
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
Connect Electrical Electrical Cord
L2. See Connect Connect Electrical
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.
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.
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.
Ensure that the reservoir is properly
serviced. Improve ventilation to
allow more efficient heat dissipation.
Motor must operate counter-
clockwise from pully end.
Check drive belt condition. Replace
if broken.
Cord in
Cord
37