
cd 97-726 • rev. 7/07
PRESSURE
W
ASHER
Tr
oub
leshooting Guide
12
TRoUbleShooTINg
pRobleM
poSSIble CaUSe
SolUTIoN
loW opeRaTINg
pReSSURe
insufficient water supply
use larger garden hose; clean filter washer at
water inlet.
old, worn or incorrect spray nozzle match nozzle number to machine and/or
replace with new nozzle.
plumbing or hose leak
check plumbing system for leaks. re-tape
leaks with teflon tape.
Faulty or mis-adjusted unloader
valve (where applicable)
adjust unloader for proper pressure. install
repair kit when needed.
Worn packing in pump
install new packing kit (model 224).
model 22: call dealer customer support.
Fouled or dirty inlet or discharge
valves in pump
clean inlet and discharge valves (model 224).
Worn inlet or discharge valves
replace with valve kit (model 224).
model 22: call dealer customer support.
slow engine rpm
set engine speed per specifications
(approximately 2800 rpm - 400 rpm).
flUCTUaTINg
pReSSURe
Valves worn
check and replace if necessary (model 224).
Blockage in valve
check and clean out if necessary (model
224).
Worn piston packing
check and replace if necessary (model 224).
pump sucking air
check that hoses and fittings are airtight. turn
off machine and pull trigger gun until a steady
flow of water emerges through the nozzle.
insufficient inlet water supply
turn water on full force. check garden hose for
kinks, leaks or blockage.
pReSSURe loW
afTeR peRIod of
NoRMal USe
nozzle worn
check and replace if necessary
inlet or discharge valves blocked
or worn
check and clean or replace if necessary.
unloader valve seat worn
check and replace if necessary (model 224).
model 22: call dealer customer support.
pUMp NoISe
air suction line
check water supply and connections on suc-
tion line.
Broken or weak inlet or discharge
valve springs
check and replace if necessary.
Foreign matter in valves
check and clean if necessary.
Worn bearings
check and replace if necessary.
excessive temperature or liquid
reduce to below 180°F (75°c).
pump is sucking air
check that hoses and fittings are airtight. turn
off machine and purge pump by squeezing trig-
ger gun until a steady flow of water emerges
through the nozzle.
Содержание CD-2323
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