Cleaning Air Box
What to do if ...
7 - 1
ba75731e02
02/2008
7
What to do if ...
Pump does not work
Cleaning is stopped
prematurely
Insufficient cleaning
results
Cause
Remedy
– Loose cable
– Check wiring
– Cleaning relay does not switch
– Check/correct the settings of
the measuring system
– With heavy frost: Formation of
ice in the pump
– Warm up the Cleaning Air
Box
– For future operation, lower
the ratio between stoppage
and cleaning duration
(see section 4.2)
Cause
Remedy
– Excessive heat. Temperature
fuse has interrupted the circuit
(T>70 °C).
– Let the Cleaning Air Box
cool down. The temperature
fuse restores the circuit
again automatically.
– In the case of frequent
failure, shade the Cleaning
Air Box or increase the ratio
between stoppage and
cleaning duration for future
operation.
Cause
Remedy
– Water column in compressed air
hose
– Check the hose system for
leakiness and seal it
– Reduce the depth of
immersion of the sensor
– If necessary, install a check
valve (see section 3.5).
– Dirt at the cleaning nozzles and
in the compressed air line
– Clean the cleaning nozzles
and compressed air line
– Install a check valve,
especially with great depths
of immersion (see
section 3.5).
– Intake air filter dirty
– Replace intake air filter
