46
Trouble
Possible cause
What to do about it
Machine is not running
or switches off during
operation
Low or excessive voltage, mo-
tor protective switch switches
off
Provide voltage according to
regulations
Threephase motor runs on 2
phases, protective motor switch
See cause „no electric current“
Excessive pump pressure, mo-
tor protection switch cuts out.
See also „Excessive pump
pressure“
Pump fails to reach
prescribed pressure
Leakage in water suction hose
or in chemical suction hose
Check and retighten screw
connections, replace sealings
if necessary; tighten hose clips;
check dosing valve for leaks,
replace if necessary
Pump seals leaking
Have an expert check pump
seals and plungers for wear
conditions and replace if neces-
sary
Nozzle worn
Mount new nozzle
Wrong nozzle, dirty water filter
within water inlet tank
Mount specified nozzle, clean
filter
Excessive pump pres-
sure
Nozzle blocked
Remove & clean nozzle; flush
spray lance without the nozzle
mounted
Wrong nozzle
Mount specified nozzle
Heating coil blocked with lime
Delime heating coil (see 9.2)
No flow of chemicals
Chemical filter on suction hose
blocked
Clean filter
Dosing valve blocked
Clean dosing valve
Chemical tank empty or filter
basket on suction hose is not
below liquid level
Refill chemicals, lower filter
basket
Control electronics of the spray
gun defective
Have spray gun replaced by an
expert
Program error, control device
function
See „program error“
Receiver defective
Have receiver replaced by an
expert
