8
CM-Direct Driven Operator's Manual 2008
troublesHooting
SYMPTOM
PROBABLE CAUSE
REMEDY
Engine will not start.
Various engine problems.
Refer to the Engine Manual
accompanying your unit.
Low engine oil level
Change engine oil level
Unit components are frozen.
Allow to thaw. If any part of the unit
becomes frozen; excessive ressure
may build up in the unit which could
cause the unit to burst resulting in
possible serious injury to the
operator or bystanders.
No discharge at nozzle when
water supply not on.
Ensure hose is 3/4" diameter and
trigger mechanism is squeezed.
incoming water supply is turned on.
Kink in water inlet hose.
Remove kink.
Low or fluctuating pressure.
Kink in high pressure discharge hose. Replace hose.
Water inlet screen obstructed.
Remove screen, clean or replace.
Pump sucking air. (Prime eliminated) Tighten all water intake connections
Eliminate leaks in intake line.
Obstructed or worn spray nozzle.
Clean or replace.
Damaged or obstructed valve assy.
Remove, inspect, clean or replace.
on pump.
Pump packings worn.
Replace packings.
Bypass valve not operating correctly.
Repair or replace.
Water is leaking from the "Heat
Dump Valve"
Water temperature is too high.
Do not allow the unit to operate in
the bypass mode (with trigger gun
closed) for more than 3 minutes.
Defective valve.
Replace.
Oil appears milky or foamy.
Water in oil.
Change pump oil. Fill to proper
level.
Oil leaking from unit.
DO NOT USE!!!!!
Contact Customer Service.
Detergent will not siphon into
Detergent strainer is not completely
Check, submerge if necessary.
Low Pressure Detergent mode.
submerged in detergent solution.
Detergent strainer obstructed.
Inspect, clean or replace.
Detergent hose cut, obstructed or
Inspect, clean or replace.
kinked.
Not in low pressure mode.
Use black 65° detergent nozzle.
Nozzle assembly is plugged.
Clean or replace.
Too many high pressure hose
Use one extension maximum.
extensions attached to the water outlet.
Ball & Spring in Venturi stuck.
Remove, clean or replace.
Water flows back into detergent
Ball & Spring in Venturi reversed,
Remove, clean or replace.
container.
missing or corroded.
Water flows from the nozzle when the Gun is malfunctioning.
Repair or replace.
trigger gun is locked in the "OFF"
position.
