![background image](http://html1.mh-extra.com/html/graco/aquamax-804594-a-series/aquamax-804594-a-series_instructions-parts-list-manual_2252699011.webp)
11
309016
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.
Summary of Contents for AquaMax 804594 A Series
Page 8: ...8 309016 Notes...