Troubleshooting
Despite the complexity of your jetter, a number of common complaints stem from relatively simple problems.
With guidance, the user can identify and remedy many common problems.
Always disconnect the power supply before attempting to service any equipment.
Common problems and solutions
Malfunction
U
Unniitt rruunnss bbuutt nnoo w
waatteerr ddiiss-
cchhaarrggeess
LLoow
w nnoozzzzllee pprreessssuurree
SSuurrggiinngg pprreessssuurree oorr ddrroopp iinn
pprreessssuurree
PPrreessssuurree aatt ppuum
mpp bbuutt lloow
w ddiiss-
cchhaarrggee pprreessssuurree
C
Chheem
miiccaall iinnjjeeccttoorr nnoott w
woorrkkiinngg
pprrooppeerrllyy
W
Waatteerr lleeaakkss ffrroom
m ppuum
mpp m
maannii-
ffoolldd
U
Unnllooaaddeerr ddooeess nnoott bbyyppaassss
U
Unnllooaaddeerr ccyycclleess w
whheenn gguunn iiss
sshhuutt ooffff
W
Waatteerr iinn ccrraannkkccaassee
Cause
-Water supply not turned on
-Plugged nozzle on discharge
-Shut off valve is malfunctioning
-Plugged spray nozzle
-Inlet screen is plugged
-Insufficient water supply
-Unloader valve stuck open
-Plugged inlet or discharge hose
-Use of additional lengths of hose
-Partially plugged spray nozzle
-Worn nozzle
-Soap (low pressure tip installed)
-Restricted or leaking inlet hose, filter
-Cavitation (inadequate water supply)
-Worn pump packings
-Fouled inlet or discharge valves
-Broken valve spring
-Worn or restricted unloader valve
-Restricted discharger
-Soap nozzle (low pressure tip) not installed
-Injector valve not turned on
-Discharge hose too long
-Clogged injector pick up hose
-Clogged injector
-Worn plungers or packings
-All valves fouled
-Unloader valve seat fouled
-Leak in trigger or discharge line
-High humidity or direct water spray
-Worn seals
Remedy
-Turn on water supply
-Remove, clean, or replace nozzle
-Remove, repair, or replace valve
-Remove and clean or replace nozzle
-Remove and clean or replace filter
-Secure adequate water supply
-Disassemble and clean, repair, or replace
-Flush or replace hoses
-Reduce discharge hose length
-Remove and clean or replace nozzle
-Remove and replace nozzle
-Remove and install one of the nozzles
-Check inlet hose, filter; clean or replace
-Secure adequate water supply
-Inspect and replace worn packings
-Inspect and clean or replace valves
-Inspect and replace valve spring
-Inspect, repair, or replace unloader
-Check for discharge obstructions in injector,
gun, hose, valve, wand, and unloader.
-Install nozzle with large hole
-Turn on injector by turning fitting on injector
-Reduce hose length or reposition injector to
within 40’ of trigger gun
-Remove, clean, and replace
-Disassemble, clean, and reassemble
-Inspect and replace
-Inspect, clean or replace
-Inspect, clean or replace Unloader assly.
-Inspect, repair or replace leaking fittings
-Reduce oil change intervals
-Replace seals
