Prochem Apex GTX - Manual (Page 57)

55
Maintenance
Problem Cause Solution
Engine stops running.
While doing normal cleaning,
the engine stops running.
Engine is out of fuel Add fuel to the fuel tank.
Waste tank is full Empty waste tank.
Main or engine circuit breaker on the
control panel has been tripped.
After inspecting the unit to determine
the cause of the tripped circuit breaker,
press the reset button.
Engine coolant temperature has
exceeded 240°F, triggering the high
temperature switch to shut the unit
down. Determine the cause of the over-
heating before restarting the unit. Refer
to the Kubota Engine Operation and
Maintenance Manual.
Defective fuel pump. Replace fuel pump.
Defective float switch inside the waste
tank. Check switch for proper operation.
Replace as necessary.
Defective 240°F engine coolant high-
temperature shutdown switch.
Test switch. If necessary, replace.
Oil pressure gauge on engine has shut
down, due to insufficient oil pressure.
Refer to the Kubota Engine Operation
and Maintenance Manual. DO NOT
restart the engine until the cause is
determined and corrected.
No ignition in the engine or engine is
malfunctioning. Refer to the Kubota Engine Operation
and Maintenance Manual.
Excessive heating
Flow restriction caused by hard water
scaling.
Descale unit, repair or replace
damaged plumbing components as
necessary. Install water softener.
Not enough water flow. Check jet size of tool.
Heat exchanger leaks.
NOTE: The exhaust heat
exchanger will produce water
condensation discharge at
times during normal operation.
DO NOT confuse this with a
leak.
Engine/vacuum exhaust heat
exchangers are damaged from frozen
water.
Inspect heat exchangers for leaks.
Visually inspect for damage. Pressure
check after removing from the unit.
(Maximum test pressure 1200 PSI).
Loss of temperature.
The heat output of the unit is
LESS than normal.
Temperature relief valve on water box
is stuck open. Clean temperature relief valve and
test. Replace, if necessary.
Engine RPM is low. Reset engine RPM.
Defective temperature gauge.
Test gauge and sensor. Replace failed
component.
Automatic waste pump is
malfunctioning or not operating
normally.
NOTE: When replacing either
the pump or float switch on
internal (in tank) pumpout, use
new electrical connectors and
heat shrink. Inspect connec-
tion for watertight seal. Defective waste pump float switch. Replace float switch.
Broken diaphragm. Replace diaphragm.
Weak battery.
Charge or replace battery if needed.
Check charging station.
Pump-out circuit breaker on control
panel has been tripped.
After inspecting waste pump to
determine the cause of the tripped
circuit breaker, press the reset button.
86341750 APEX GTX