Troubleshooting - Patron PHG-40 Mode D'emploi

SYMPTOM
Engine will not start Various engine problems
Unit components are frozen.
No discharge at Inadequate water supply.
nozzle when trigger
mechanism is
squeezed.
Low or fluctuating Kink in water inlet hose.
pressure.
Water inlet screen obstructed.
Pump sucking air. (Prime eliminated)
Incorrect nozzle installed on gun.
Obstructed or worn spray nozzle.
Damaged or obstructed valve assy. on pump.
Pump packings worn.
Unloader/bypass valve not operating correctly.
Water is leaking at Unloader malfunction.
safety relief valve.
Pressure switch malfunction.
Safety relief valve is defective.
Oil appears milky Water in oil.
or foamy.
Oil leaking from Worn seals or o-rings.
unit.
Detergent will not Detergent strainer is not completely submerged
siphon in detergent solution.
Detergent strainer obstructed.
Detergent hose cut, obstructed or kinked.
Detergent adjusting knob turned to closed
position.
Nozzle assembly is plugged.
Water flows back Ball & spring in Venturi reversed, missing, or
into detergent corroded.
container.
Water flows from Trigger gun is malfunctioning.
the nozzle when
the trigger gun is
locked in the "OFF"
position
Blower motor will Burner/Blower motor malfunction.
not run. (Burner will
Belt broken or slipping on generator.
not ignite without
blower running)
22
PROBABLE CAUSE

TROUBLESHOOTING

REMEDY
Refer to the Engine Manual accompanying your unit.
Allow to thaw. If any part of the unit becomes frozen;
excessive pressure may build up in the unit. This can
cause the unit to burst, resulting in possible serious injury
to the operator or bystanders.
Ensure hose is 3/4" diameter and incoming water supply
is turned on. Ensure the water is turned all the way on.
Remove kink.
Remove screen, clean, or replace.
Tighten all water intake connections Eliminate leaks in
intake line.
Insert high pressure nozzle.
Remove, clean or replace.
Remove, clean or replace.
Replace packings.
Repair or replace.
Detect and correct unloader problem.
Detect and correct pressure switch problem.
Replace safety relief valve. NEVER run unit without safety
relief valve. Doing so can cause an explosion!
Change pump oil. Fill to proper level.
Consult customer service.
Check, submerge if necessary.
Inspect, clean, or replace.
Inspect, clean, or replace.
Open adjusting knob. Refer to "Cleaning with Detergents".
Clean or replace.
Remove, clean, or replace.
Repair or replace.
Repair or replace.
Adjust or replace as necessary.