Solution System
99
Service Manual – Scrubtec R 253 - RA40
Draining the Chemical Mixing System
Clean the detergent tank as shown in the previous section
To remove residual detergent from the detergent hoses and pump, proceed as follows
1 Turn the ignition key to “I”
2 Press the One-Touch button
Check that the detergent quantity indicator
max.2%
C
J
I
L
M
K
G
A
B
F
H
D
E
42
46
43
44
45
41
47
48
on the display
has at least one segment lit
3
Press the solution flow adjustment button
and the detergent percentage adjustment button
together, until the screen appears on the display (after approximately 5 seconds)
4 Release buttons
and
and wait for the countdown timer on the display to finish and the
vacuum system to be activated
5
Collect the detergent remained on the floor.
6 Remove the operator key
7 Lift the recovery tank assembly and the driver’s seat, then check that the detergent tank hose is empty,
otherwise perform steps 2 to 6 again
Note:
The draining cycle lasts about 30 seconds, then the vacuum function automatically
turns on, which allows to remove the detergent remained. The draining cycle can also be
performed with the detergent tank full of water, thus cleaning the system thoroughly. It is
advisable to perform this type of draining to clean the Chemical Mixing System from dirt
and deposits if the machine has not been used/cleaned for a long time. The draining cycle
can also be performed to quickly fill the detergent supply hose when the tank is full but
the system is still empty. If necessary, the draining cycle can be performed several times
in succession.
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