6.1 Basic Preventive Maintenance Recommendations
Befor
e
and
After
Every
Use
Every 6
Months
or 125
Hours*
Every 6
Months
or 500
Hours*
Every
12
Months
or 500
Hours*
Every
1,000
Hours
Every 4
Years or
7,500
Hours*
Check pump oil level
and add if low
X
Check in-line strainer
cartridge and clean if
necessary
X
Inspect hoses for wear
or damage
1
X
Check gun trigger for
leakage and repair if
necessary
2
X
Check integrity of motor
winding insulation with
“megger” test
X
Replace pump oil
3
X
Check pump valves and
seals for wear & change
if necessary
X
Lubricate motor
bearings with high grade
ball or roller bearing
grease
X
* Whichever occurs first.
1) If any hose damage is found, replace hose immediately.
2) Remove gun from water with system at operating pressure and trigger in the
closed or “OFF” position. If water is leaking out of barrel or handle, the gun
trigger valve is worn and should be replaced.
3) The initial oil change is after 50 hours of operation. See pump manufacturer’s
literature in the Appendix for additional recommendations.
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