Prochem Legend SE AD - Manual (Page 48)

TROUBLESHOOTING
LEGEND SE 980059 07/23/02 4-16
PROBLEM CAUSE SOLUTION
Defective 285°F high temperature
shutdown switch (located at rear of
exhaust heat exchanger).
Test. If necessary, replace.
Starter turns over engine, but
will not start
Engine is malfunctioning
Refer to Kohler Engine Operation and
Service Manual.
Engine is out of gasoline Add gasoline to the fuel tank.
Waste tank is full Empty waste tank.
Water pressure has dropped below
50 PSI, triggering the the pressure
switch to shut the unit down. Check water supply to your unit. Check
water pump inlet screen in water box.
Check supply hose for kinks.
Water pressure has exceeded 1200
PSI, triggering the pressure switch
to shut the unit down.
Check pressure regulator for proper setting.
Main 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.
Solution temperature has exceeded
285°F, causing the unit to shut
down.
Refer to “Excessive Heating” in the
“Troubleshooting” section of this manual.
Engine coolant temperture has
exceeded 240°F, triggering the high
temperature switch to shut the unit
down. Determine the cause of the overheating
before restarting the unit. Refer to the
Kohler Engine Operation and Service
Manual.
Defective fuel pump Replace fuel pump.
Defective float switch inside the
waste tank.
Disconnect the float switch plugs and
bypass the float switch. If the unit starts,
repair or replace the defective float switch.
Defective 285°F engine coolant
high-temperature shudown switch.
Test switch. If necessary, replace.
Loss of oil pressure in engine.
Check for proper oil level or wrong type of
oil being used.
285°F solution temperature switch is
defective.
Test switch. If necessary, replace.
Defective engine oil pressure
switch.
Test switch. If necessary, replace.
Engine stops running
While doing normal cleaning,
the engine stops running
No ignition in the engine or engine
is malfunctioning. Refer to the Kohler Engine Operation and
Service Manual.
Check instrumentation settings:
Diverter valve is in the HEAT
EXCHANGER position.
Temperature bypass valve is
closed. Temperature control is set
at a high temperature.
Turn diverter valve to the MUFFLER
position.(If cleaning , make certain that the
water pump switch is in the ON position).
Open the heat bypass valve. Set
temperature control to a lower setting.
Strainer or orifice is bypass manifold
is closed position. Clean strainer screen and orifice. replace,
if needed.
Defective solenoid-remains in
closed position. Inspect solenoid for proper operation.
Clean, or replace, if needed.
Bypass valve is completely closed
and unit is left running for a long
period fo time without using water.
Open bypass valve and allow system to
cool down.
Defective temperature control or
temperature control microswitch Inspect temperature control for proper
operation. Repair, or replace, if necessary.
Excessive heating
Flow restriction caused by hard
water scaling.
Descale unit, repair or replace damaged
plumbing components as necessary.
Install water softener.