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General Maintenance
1 Micron Filter Canister
Typical Dirty FilterTypical Dirty Filter
Clean Filter Installation
Filter Retainer Hand Bolt
1 Micron Cartridge Filter
Follow all the precautions outlined in the previous
section for the 10 micron lter.
Replacing the 1 micron lter:
1. Make sure the waterblasting system is shut-
down and the truck is in the service posi-
tion.
2. Close the clean water supply valve and bleed
pressure from the charge water system.
3. Remove lter canister lid and retainer ring.
4. Remove the lter retainer bolt and lter. Then
ush lter canister to remove debris and con-
taminants with clean, fresh water.
5. Apply a thin coat of anti-sieze to the lter
retainer bolt threads.
6. Insert the new lter and retainer bolt into the
lter canister. Hand tighten the retainer bolt
just enough to seat the lter (snug). Make
sure not to over tighten the bolt and col-
lapse the lter cartridge.
7. Coat the retainer ring threads with anti-sieze
and install lter canister lid.
8. Open the clean water valve, reactivate the
waterblasting system and follow the instruc-
tions to purge air from the charge water sys-
tem in the next section of this chapter.
9. Activate the charge pump and ush the low
pressure side of the pump and charge water
system using the ush valve before operating
the UHP pump after changing the lters.
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