Troubleshooting Guide - Kärcher 1.574-200.0 Manual

Maintenance plan
Daily before the start of operations
1. Carefully examine the abrasive hose for
cracks, kink points and other damage.
Soft spots in the hose indicate wear on
the inside of the hose. Replace the de-
fective or worn hose with a new hose.
2. Examine electrical cables and plugs for
damage. Have defective parts replaced
by Customer Service.
Every 100 operating hours
1. Check the couplings on the abrasive
hose and on the device for damage and
wear. Replace a defective hose, have
DANGER
Danger of accident
The device can start unintentionally. Cold
device parts or liquid carbon dioxide can
cause frostbite. Gaseous carbon dioxide
can cause death by asphyxiation.
Before working on the device, carry out all
the steps in the "Ending operation" chapter.
Wait until the device has warmed up or
wear cold protection clothing. Never put dry
ice in your mouth.
Fault
The jet gun fault indicator
lights up
The jet gun fault indicator
flashes
The compressed air supply
fault indicator lights up
The compressed air supply
fault indicator flashes
The pellet production fault in-
dicator lights up
The pellet metering fault indi-
cator lights up
The pellet metering fault indi-
cator flashes
The voltage supply indicator
light does not light up
The compressed air indicator
light does not light up
The device does not work
Poor cleaning performance
Pellet dosage too low
Recurring interruptions in the
dry ice jet
16
defective couplings on the device re-
placed by Customer Service.
Every 500 operating hours or annually
1. Have the device checked by Customer
Service.
1. Renew the abrasive hose at least every
2 years.
According to BGV D 26, the following tests
must be carried out on the device by an ex-
pert. The results of the test must be record-
ed in a test certificate. The operator of the

Troubleshooting guide

ATTENTION
Risk of damage
Using the wrong detergent can damage the
device and the jet gun.
Never clean the device or the jet gun with
solvents, petrol or detergents containing oil.
Fault display
Faults are indicated by the indicator lights
on the control panel.
Illustration N
Jet gun fault indicator
1
Rectification
 Do not pull the trigger of the jet gun before switching it on.
 Remove the fastener on the trigger of the jet gun.
 Check that the control cable of the jet gun is connected to the device.
 Check the control cable on the abrasive hose for damage.
 Increase the air pressure.
 Check the exhaust hose for clogging.
 The carbon dioxide bottle is too hot and therefore has too high a pressure. Set up the device in-
cluding the carbon dioxide bottle in a cooler location or protect it from direct sunlight.
 Allow the device to thaw out. Check the carbon dioxide filter and change it if necessary. Then per-
form a reset.
 If the malfunction occurs repeatedly, replace the carbon dioxide bottle.
 Contact Customer Service.
 Allow the metering motor to cool down. Position the device so that air can flow into the device from
below. Contact Customer Service if necessary.
 Plug the mains plug into the socket.
 Check the on-site voltage supply.
 Connect a compressed air hose to the device.
 Open the stop valve in the on-site compressed air supply.
 Check the indicator lights and fault indicators.
 Perform a reset.
 Turn the program switch to a higher level.
 Increase the jet pressure.
 Check the filling level of the carbon dioxide bottle.
 Do not use a heated carbon dioxide bottle. Protect the carbon dioxide bottle from heat radiation.
The effectiveness of the pellet production drops sharply if the temperature of the carbon dioxide is
above 31 °C.
 Allow the abrasive hose and the jet gun to thaw to clear any blockages. Then increase the jet pres-
sure.
 Turn the program switch to a higher level.
 Replace the carbon dioxide filter between the carbon dioxide bottle and the device.
 Turn the program switch to a lower level. or increase the jet pressure.
 If the jet nozzle is blocked:
a Immediately close the carbon dioxide bottle.
b Allow the device to thaw for 30 minutes.
c Increase the jet pressure.
d Start the device with the carbon dioxide bottle closed to remove pellet residues.
Every 2 years
Tests
English
device must keep the test certificate until
the next test.
After a business interruption of more
than a year
1. Check the device for correct condition
and function.
After changing the installation site
1. Check the device for proper condition,
function and installation.
After repair work or changes that can
affect operational safety
1. Check the device for proper condition,
function and installation.
Compressed air supply fault indicator
2
Pellet production fault indicator
3
Pellet metering fault indicator
4
Troubleshooting
Malfunctions often have simple causes that
you can remedy yourself using the follow-
ing overview. When in doubt, or in the case
of malfunctions not mentioned here, please
contact your authorised Kärcher Customer
Service.