Graco AquaMax 804594 A Series, Instructions-Parts List Manual

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Troubleshooting
Problem Cause Solution
Water on oil side of
pump Humid air condensing inside crankcase Change oil as specified in Maintenance on page 9.
Worn packings Install new packings. See
Pump Service on page
12 or 14.
Oil seals leaking Install new oil seals. See
Pump Service on page
12 or 14.
Frequent or
premature failure of
packings Scored, damaged, or worn plungers Install new plungers. See Pump Service on page
12 or 14.
Abrasive material in the fluid being
pumped Install proper filtration on pump inlet plumbing.
Inlet water temperature too high Check water temperature; may not exceed 70 _ C
(160 _ F).
Over pressurizing pump Do not modify any factory-set adjustments. See
Equipment Misuse Hazard on page 3.
Excessive pressure due to partially
plugged or damaged tip Clean or replace tip. See
Installing and Changing
Spray Tips on page 7.
Pump running too long without spraying Never run pump more than 10 minutes without
spraying.
Running pump dry Do not run pump without water.
Strong surging at
inlet, and low
pressure on
discharge side Foreign particles in the inlet or discharge
valve or worn inlet and/or discharge
valves Clean or replace valves. See
Pump Service on page
12 or 14.