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20 SCRUBTEC 653B – 653BL – 651BCL – 661BL 9097058000(2)2009-10 A
ENGLISH USER MANUAL
Detergent fl ow adjustment
(For machines with Chemical Mixing System)
Turn the knob (A, Fig. 5) clockwise or counter-clockwise to increase or decrease the detergent concentration.1.
The average detergent concentration values, matching the 4 coloured areas of the scale (B), are shown in the fi gure.2.
To set the detergent quantity to zero, fully turn the knob (A) counter-clockwise.3.
NOTE
The detergent concentration is kept constant even if the washing water fl ow is changed with the switches (C) or (D).
0,4%
0,5 Oz/Gal
0,75%
1 Oz/Gal
1,5%
2 Oz/Gal
2,5%
3 Oz/Gal
AB
C
D
P100107
Figure 5
Working with brush/pad-holder extra pressure function turned on
If the fl oor proves to be particularly diffi cult to clean, it is possible to turn on the brush/pad-holder extra pressure function by
pressing the pedal (11) to position (11c).
CAUTION!
When the cylindrical brush deck (18c) is installed, the extra pressure function is not enabled.
CAUTION!
In case of brush/pad-holder motor overload, due to foreign bodies which prevent them from turning, or to
excessively aggressive fl oors/brushes, the safety system stops the brush/pad-holder after about one minute of
continuous overload.
The overload is shown by the three warning lights (81a, 81b, 81c) fl ashing simultaneously.
If the overload takes place when the extra pressure function (11c) is on, the pedal position must be changed to
(11b). If the overload persists, the brush/pad-holder stops.
To start scrubbing again after a brush/pad-holder stop due to overload, stop the machine by turning the ignition
key (80) to “0”. Turn on the machine by turning the ignition key (80) to “I”.