17
Nilfisk FOOD
Fault
Cause
Remedy
The machine does not start
Fuse blown
Power supply fault
Fuse in the wiring box of the
machine blown.
Motor overload in the wiring box of
machine disconnected.
Check fuse and replace, if necessary
Power supply to be checked by an
expert.
Check fuse and replace, if necessary.
Before switching on again, check
cause of disconnection.
The machine does not build up
pressure .
The program does not function
correctly.
No water supply.
Direction of rotation of the pump is
not correct.
Check the program.
Please call for assistance by JBT
Open inlet valve of machine.
Change direction of rotation of pump
in accordance with arrow on pump.
Unstable or too low pump
pressure .
Insufficient water supply.
Strainer on inlet pipe blocked up.
Provide sufficient water supply. Min. 1
1/4" piping.
Clean or replace filter.
Unsatisfactory foam quality .
Detergent not suitable.
Too low concentration of the
detergent.
Too high temperature of teh inlet
water.
Insufficient air quantity and
pressure.
Change to correct type of detergent.
Ensure sufficient detergent supply,
2-4%.
Reduce the temperature of the water.
Ensure sufficient air supply, 500 l/
min., 5 bar.
Spreading of foam is not
uniform .
Insufficient air supply to the system.
Incorrect air pressure on the
system.
Too high air pressure in the injector
(read pressure on pressure gauge.
Incorrect nozzles mounted.
Ensure sufficient air supply, 500 l/
min., 5 bar.
Set pressure on 5 bar on the
regu lating valve.
Set pressure on 5 bar on the
regu lating valve.
Contact JBT for instructions.
No spreading of foam .
The program does not function
correctly.
The non-return valve in the injector
is blocked up.
Check the program. Call for JBT as-
sistance, if necessary.
Clean or replace the valve.
No pressure air in the system .
Inlet valve for pressure air is not
open.
The solenoid valve for pressure air is
blocked up or defective.
Open inlet valve for pressure air.
Clean or replace the solenoid valve.
