Nilfisk-ALTO ATTIX 751-01/-11/-21 Repair Manual page 42

Nilfisk
ALTO
Attix7_ver.1.0_140105
Troubleshooting
Check level control:
Mark the hose at 7 and 11 cm (see 7.11, page 40).
Slowly immerse the hose in a container filled with
water until the lamp illuminates. This turn-on point
should be at the marking 7 cm +1 cm (recalibrate
the level control if necessary (see 7.13, page 40)
and repeat the procedure).
Green LEDs (D7, D2 and D6) illuminate.
Red LED (D3) flashes (microprocessor working).
Yellow LED (D4) illuminates (level - pump on).
Continue to immerse the hose in water until the
check lamp (motor) extinguishes. This turn-off point
should be at the marking 11 cm +1 cm.
Green LEDs (D2 and D6) illuminate.
Red LED (D3) flashes.
Yellow LED (D4) illuminates.
Red LED (D5) illuminates.
8. Take the hose out of the water.
Visual check:
The check lamp (motor) illuminates after about 6 s.
Green LEDs (D2, D7 and D6) illuminate.
Yellow LED (D4) illuminates.
Red LED (D3) flashes.
After another 20-25 s the check lamp (pump) and
LEDs (D4 and D6) extinguish.
9. Check pump mode:
Set the switch to "Pump" and hold it there.
The motor lamp extinguishes.
The pump lamp illuminates.
Green LEDs (D2 and D6) illuminate.
Red LED (D3) flashes.
Red LED (D5) illuminates.
Yellow LED (D4) illuminates.
After about 60 s the check lamp (pump) and LEDs
(D6 and D3) extinguish.
Briefly set the switch to "Pump" (it should automa-
tically return to "Auto").
The motor lamp and pump lamp illuminate.
Green LEDs (D2, D6 and D7) illuminate.
Red LED (D3) flashes.
Yellow LED (D4) illuminates.
After about 30 s the lamp (pump) and LEDs (D4 and
D6) extinguish.
"Automatic" OK?
Yes - "Auto" Mode OK.
No - Replace electronic
and recalibrate level
E
42/59