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Page 52
Problem Probable Cause Remedy
No electric power
Close soap valve or sub-
merge detergent siphon
tube into solution
Check cord, plug, socket,
GFCI and breaker
Thermal overload in the motor
or starter has been tripped
Reset manual overload
by depressing the thermal
switch on the outside of the
motor after the motor has
cooled.
Replace or repair motor
and/or wiring
Power switch inoperative Check power switch
Electric motor does not
start
Electric motor or wiring failure
POWER SYSTEM: ELECTRIC DRIVEN
CAUTION: Automatic over-
load will restart the motor
automatically once the
motor has cooled.
Connect to appropriate
water supply
No water pressure at inlet
Check for correct pressure
and gallonage
Must have adequate water
supply
Descale coil for better
water ow
Coil scale buildup
Pull trigger gun to check
auto-start function
Check lter screen and inlet
pressure
Replace
Pressure switch on unloader
is faulty
Remove leads from timer at
control end, see if machine
shuts o after time out,
replace if defective
Timer is faulty
Machine will not auto
start (if equipped)
PUMPING SYSTEM
Problem Probable Cause Remedy
Clean valve assembly or
replace gun
Turn water on
Debris in gun valve assembly
Trigger gun leaks or will
not shut o
Water turned o
Clean or replace with
proper size nozzle
Nozzle is plugged
Chemical injection valve is
open / hose not in solution
Hot water coil obstructed Remove obstruction or
descale the coil
Open tting on high pres-
sure pump until water ows
Pump dry, needs to be primed
Pump runs but there is
no spray pressure
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