Possible Cause; Corrective Action - Renfert Basic quattro IS Faq

FAQ - English
For information on operating elements, see
For chapter indications, refer to the complete instruction manual on the internet.
Problem
No air and no abrasive.
Only air, no or very
little abrasive.
Only air, no or very
little abrasive.
Unit blasts continu-
ously.
Lamp is not alight.
Compressed air
leaking from the foot
switch.
Foot switch fails to
switch on.
Foot switch hoses
cannot be disconnect-
ed from the unit.
Quick-stop not func-
tioning (the nozzle
blasts continuously).
Sound of rushing air
when the unit is oper-
ating.

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.
• 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).
• Pneumatic connections are loose.
• Sandblasting hose worn.
• The connecting pressure at the ex-
ternal air connection (15, Fig.
too small.
• Outer pressure regulator on the
maintenance unit is altered (fixing
screw is loosen).
• A small amount of leakage is always
present at the control valves, thus al-
lowing (a minimum) of air to escape.
• Continue to turn the tank selection
switch whilst activating the foot
switch at the same time.
Fig. 1 and Fig. 2 on page 2 of this document.
• 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 6.4.
• Change filter cartridge
• Replace the abrasive.
• 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.
Please use the release tools supplied (24).
• Inspect the pneumatic connections for correct seating.
• Replace the sandblasting hose.
• Increase the external connecting pressure at a min. of
1) is 5 bar. The external connecting pressure is displayed
on the manometer
• Turn the inner pressure regulator clockwise until stop.
Activa e foot pedal and set the pressure regulator on
the maintenance unit at 5 bar (see manometer).
• This is not a fault, but instead is the result of a pres-
sure release opening which must not be blocked.
• Only turn the tank selection switch when the foot
switch is not activated.
- 1 -

Corrective action

(22 / Fig. 1) (wrench SW14).
(8, Fig. 1).
EN