Renfert Vario basic Instrucciones De Uso Originales página 22

Problem
Reduced blasting
force
EN
Excessive abra-
sive consumption
Blasting chamber
fills with dust.
Abrasive spurts in
pulses.
Unit continuous-
ly blasting and
stops when foot
switch is activat-
ed.
Foot switch fails
to switch on.
Air leaking from
the foot switch.
Lamp fails to go
on.
Possible cause
• Function selector switch not properly
set.
• Nozzle worn.
• Abrasive used up.
• Abrasive feed hose is blocked /
damaged / kinked.
• Insufficient abrasive in the reservoir.
• Extraction power set too high.
• Insufficient extraction power.
• Extractor dust bag full.
• Nozzle connectors not vertical.
• Abrasive used up or too dirty.
• Kink in the suction hose.
• Foot switch connected incorrectly.
• No pressure at the compressed air
connection.
• Kink(s) in the pneumatic hoses.
• Pneumatic hoses connected incor-
rectly.
• Power cord not connected.
• Illumination defect.
The device with fluorescent tubes
• The fluorescent tube is not situated
correctly in the socket.
• The fluorescent tube is defect.
Corrective action
• Make sure the selector switch clicks into place.
• Replace the nozzle.
• Replace the abrasive.
• Drain the abrasive out and inspect / replace the
feed hose.
• Add abrasive.
• Reduce the extraction power.
• The suction performance of a weak extraction
unit can be increased by closing the boreholes
on the back side of the unit (Fig. 14, Pos. b)
with the supplied magnetic foil.
• Clean the extractor / replace the dust bag.
• Make sure the nozzle is vertical.
• Replace the abrasive.
• Inspect the feed hose.
• Inspect and correct the foot switch connection.
• Inspect the compressed air lines and compres-
sor.
• Realign the hoses.
• Replace the connectors.
• Plug the power cord into the wall outlet.
• Change light using the service or see spare part
list.
• Check that the fluorescent tube is fitted correct-
ly (see chapter 7.7.2).
• Changing the fluorescent tubes (see chap-
ter 7.7.2).
We reserve the right to make technical changes
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