Trouble Shooting - Renfert BASIC eco 2949 Serie Mode D'emploi

7.

Trouble shooting

Problem
EN
No air and no abrasive.
Only air, no or very
little abrasive.
Pressure control can-
not be adjusted.
Unit blasts continu-
ously.
Lamp is not alight.
Compressed air leaking
from the foot switch.
Foot switch fails to
switch on.
Foot switch hoses can-
not be disconnected
from the unit.
Possible cause
• Blasting nozzle blocked at the hand-
piece.
• Foot switch connecting lines kinked.
• Tank selection switch in an interme-
diate position.
• The dosage nozzle in the mixing
chamber is blocked due to contami-
nated or moist sand.
• Mixing chamber filter combination
blocked.
• Abrasive contains impurities or is
moist.
• The pressure control button is
locked.
• Foot switch connected incorrectly.
• Valve in foot switch is defective.
• Power cord not plugged in.
• Illumination defect.
• Pneumatic hoses reversed.
• No pressure at the compressed air
connection.
• Pneumatic hoses are kinked.
• Push-in connection is not released
(Fig. 2 / 3).
Corrective action
• Unscrew the nozzle from the hand-piece and blow it
out.
• With the nozzle removed, blow out the blasting hose
by activating the foot pedal.
• Inspect/correct the connection lines.
• Turn the switch until you feel it click into place.
• Cleaning the dosing nozzle, see chapter 6.5.
• Change filter cartridge (17, Fig. 1) (wrench SW14).
• Replace the abrasive.
• Pull the pressure control button upwards to unlock.
• Inspect / correct the foot switch connection.
• Replace foot switch.
• Plug the power cord into the wall outlet.
• Change light using the service or see spare part list.
• Reverse the connections.
• Inspect the compressed air lines and/or the compres-
sor.
• Reposition the hoses.
• Press the push-in connection ring on the hose side
firmly while pulling on the hoses.
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