1. MINNY 16 TROUBLESHOOTING Doc. 10010688 THE MACHINE DOES NOT START
THE BRUSH MOTOR DOES NOT START
THE SUCTION MOTOR DOES NOT START
THE MACHINE HAS NO BATTERY AUTONOMY
THE WATER DOES NOT FLOW
THE MACHINE CAN’T WASH
THE MACHINE CAN’T DRY
Tools

2. IS THE BATTERY CONNECTED ?
YES NO

3. ARE THE BATTERY CABLES CONNECTED TO THE RELAYS CARD ?
YES NO

4. IS THE CHARGER DISCONNECTED ?
ARE THE CHARGER RELAY CONTACTS CLOSED ?
Set the tester in mode Ohm and insert the pins to the two red cable on the green connector
It signs “0”?
YES NO

5. ARE THE RELAYS CARD AND CONTROL CARD CONNECTED TOGETHER ?
YES NO

6. REPLACE THE CONTROL CARD
END

7. IS THE LED ON THE BRUSH SWITCH ON ?
DOES THE BATTERY DISPLAY SHOW “4” ?
YES NO

8. IS THE BATTERY FULL ?
Set the tester in mode Volt and insert the pins on the battery poles
It signs more than “12”
YES NO

9. ARE THE MOTOR CABLES CONNECTED ?
YES NO

10. HAVE 12V TO THE BRUSH MOTOR WITH THE SWITCH PRESSED ?
Set the tester in mode Volt and insert the pins on the red and black brush motor cables and press the brush switch
YES NO

11. TO CONNECT THE BATTERY CABLE
TO CHECK IF THE BATTERY CABLES ARE CONNECTED TO THE RELAY CARD
TO CHECK IF THE FLAT CABLE IS CONNECTED TO THE BOTH CARD
HAVE YOU SOLVED THE PROBLEM ?
YES NO

12. REPLACE THE CONTROL CARD
END

13. TO CHECK AND REPLACE IF NECESSARY THE CARBON BRUSHES
Unscrew and remove the metal clamp.
Check and replace the 4 carbon brushes
HAVE YOU SOLVED THE PROBLEM ?
YES NO

14. TO EXCLUDE THE BATTERY CHARGE LEVEL CONTROL
Set the jumper to the pins indicated with n “ECB”
HAVE YOU SOLVED THE PROBLEM ?
YES NO

15. REPLACE THE CONTROL CARD
END

16. REPLACE THE RELAYS CARD
END

17. DOES THE SUCTION MOTOR START ?
IS THE LED OF SUCTION MOTOR ON ?
YES NO

18. ARE THE SUCTION MOTOR CABLES CONNECTED TO THE RELAYS CARD ?
YES NO

19. HAVE 12V TO THE SUCTION MOTOR CABLES?
Set the tester in mode Volt and insert the pins to the suction motor cables connected to the relays card.
Press the brush and suction switch
YES NO

20. TO CHECK AND REPLACE IF NECESSARY THE CARBON BRUSHES
END

21. TO CHECK THE FLAT CABLE CONNECTION
HAVE YOU SOLVED THE PROBLEM ?
YES NO

22. REPLACE THE RELAYS CARD
END

23. DOES THE CHARGER COMPLETE THE CHARGE ?
AT THE END OF CHARGE IS THE GREEN LED ON ?
YES NO

24. TO CHECK THE BATTERY CHARGE LEVEL
HAS THE BATTERY THE FOLLOWING BEHAVIOUR ?
Set the tester to Vdc mode.
Put the red pin of the tester on the positive pole of the battery and the black pin on the negative pole of the battery to check the value indicated on the battery control card:
Value at machine off after charge: Vb = 13,3
Value in working condition Vb = 12,6
THE VALUES CAN BE MORE OR LESS OF 0,2V
YES NO

25. TO CHECK THE FUNCTION OF THE BATTERY CONTROL CARD
Test of battery control card
Set the tester to Vdc mode.
Put the red pin of the tester on the positive pole of the battery and the black pin on the negative pole of the battery to verify the values indicated by battery control card:
Value 4: Vb > 11,6
Value 3: 11,4 < Vb < 11,6
Value 2: 11,1 < Vb < 11,4
Value 1: 10,9 < Vb < 11,1
Value 0: Vb < 10,9
Any values can be more and less 0,1 volt different.
The measure of the battery voltage have to be made with the machine at work. To have the right measure leave the machine works for about seconds before to read the value.
YES NO

26. TO CHECK THE CURRENT ABSORPTION OF THE MACHINE
MOT. BRUSH = 21-24A
MOT. SUCTION = 17-19A
Set the ammeter clamp on the red battery cable in mode DC.
Press the brush and suction switch and make the measure in standard working condition
HAVE YOU THE FOLLOWING VALUES ?
YES NO

27. REPLACE THE CONTROL CARD
END

28. TO CHECK THE CAUSES OF AN ABNORMAL CURRENT CONSUME
Ex.
Carbon brushes – Bearings – External parts

29. IS THE RED LED BLINKING?
YES NO

30. TO CHECK THE ALARMS IN THE CHARGER USER MANUAL

31. DOES THE CHARGE SUPPLY CURRENT ?
Connect the charger to the main 220V plug and check with the ammeter clamp if there is about 6A.
Otherwise use the tester in Vdc mode to check if the battery voltage grows slowly
YES NO

32. REPLACE THE CHARGER
Remove the carter.
Uncrew the 4 screw and replace the charger
END

33. REPLACE THE BATTERY
END

34. IS THERE WATER INSIDE THE SOLUTION TANK ?
YES NO

35. IS THE WATER COCK OPEN ?
YES NO

36. IS THE WATER LED SWITCH ON ?
YES NO

37. HAVE 12V ON THE SOLENOIDE VALVE ?
Set the tester in mode Volt.
Insert the pin on the blue and brown cables on the green connector
Press the brush and water switch
YES NO

38. REPLACE THE SOLENOIDE VALVE
END

39. REPLACE THE CONTROL CARD
END

40. REPLACE THE RELAYS CARD
END

41. IS THE WATER OPEN ?
CHEMICAL PRODUCTS ?
BRUSH FITTED ?
MACHINE FITTED TO THE KIND OF DIRT ?

42. IS THE SUCTION MOTOR ON ?
IS THE SOLUTION TANK CAP CLOSED?
IS THE SQUEEGEE DOWN ?
IS THE SQUEEGEE TUBE FIXED ?
IS THE SQUEEGEE RUBBER GOOD ?

46. Electric diagram

47. Card/Display battery check

48. Switch

49. Thermal circuit breaker

50. Diode

51. Remote control switch

52. Fuse RXE

53. Suction motor

54. Brush motor

55. Solenoide valve

56. Fuse

57. Microswitch

58. Hour-meter

59. Potentiometer

60. Chopper

61. Standard tools
Screw driver

62. Keys
Pincers

63. Tester (V, , A 20 max) Ammeter clamp (A) DC / AC Volt Ohm Ampere
V: 200 DC, 750 AC
A: DC, AC