Nilfisk-Advance SC2000 Service Manual

Solution System 74Service Manual – SC2000
Solution System
Functional Description
The solution system supplies water and detergent to
the brush when cleaning the oor. The solution tank is
also the main machine body. There is a manual valve
on the left side of the tank, just under the rear wheel,
to close the water supply whenever maintenance must
be performed on the machine. The solution ows from
the tank to the valve, through the lter and solenoid
valve (EV1) and then to the brush deck.
The detergent pump (M4), present only on EcoFlex™
systems, controls the ow of detergent from the Eco-
Flex™ tank which is then transported to the ow
in the main tube just before the solution enters the
brush deck.
The EcoFlex™ system can be selected with the spe-
cic lever under the steering wheel.
The quantity of detergent is dened by the operator
via the buttons on the dashboard instrument elec-
tronic board (EB4).
Solution ow levels 1, 2 and 3 regulate the ow of so-
lution on the basis of the machine speed so as to keep
the quantity of solution dispensed per square metre of
oor treated constant (for further details and modi-
cations, see the corresponding paragraph in the chap-
ter Control System).
Located centrally, below the solution tank, there is
also a hole for draining any liquid in the battery com-
partment.
The solution ow is regulated by various timed ON /
OFF cycles, according to:
• Water ow rate adjustment (0 - 4)
• Solution tank level
Both the solenoid valve and detergent pump (when
the EcoFlex™ system is enabled) follow the same tim-
ings.
The solenoid valve and detergent pump operate only
with the following inputs/conditions:
• Driver’s seat microswitch closed
• Brush function on
• Forward pedal pressed
• Battery level not critical, display icon without
segments and ashing outline.
Wiring Diagram
OUT
-
+
J8.2
J8.1
J8.7
B+
B -
Electronic board power supply +
Electronic board power supply -
J5.1
J5.2
J5.3
Power supply for water level sensor +
Water level sensor return
Power supply for water level sensor -
Detergent pump power supply -
Solenoid valve power supply -
Detergent pump power supply +
FUNCTION
ELECTRONIC
BOARD (EB1)
SOLENOID VALVE
(EV1)
ECOFLEX™ PUMP
(M4)
SOLUTION LEVEL
SENSOR (SW1)
J8.6Solenoid valve power supply +
Figure 1

Nilfisk-Advance SC2000 Specifications

General

Brand	Nilfisk-Advance
Model	SC2000
Category	Floor Machine
Language	English