Dust Guard System
54
Service Manual – Floortec R 870
Dust Guard System
Functional Description
The dust guard system sprays a thin film of water in front of each side broom, thus minimizing the dust raised
by the broom itself
The water used by the dust guard system is in a tank to be found inside the front column
The water tank is connected to the machine hose system by means of a quick coupling equipped with an inte-
grated valve, which allows to disconnect the tank without causing any water leaks.
The system has a pump motor (M8) which is powered by the relay (K6) and protected by the fuse (F5)
The relay (K6) is directly activated by the dust guard system switch (SW8) which powers also the warning
light (A) which signals the function activation on the dashboard electronic board (EB2)
By turning on the switch in the panel besides the operator, the pump, which is under the machine bed, collects
water from the tank inside the front column; through the hoses, the water reaches the nozzles which spray it
on the side brooms
The relay (K6), and then the system, turns only when the main broom is turning.
When the main broom is off, the water pump turns off automatically.
A
P200224
Wiring Diagram
CONTROL PANEL ELECTRONIC BOARD (EB2)
DUSTGUARD™
PUMP FUSE (F5)
DISPLAY ELECTRONIC
BOARD FUSE (F3)
DUSTGUARD™
PUMP MOTOR
DUSTGUARD™
PUMP RELAY (K6)
J1.1 - Electronic board power
J1.17 - Water pump activation signal
J1.10 - Broom electromagnetic switch power supply
J1.9 - Electronic board power supply -
DUSTGUARD™
PUMP RELAY (K6)
DUSTGUARD™
SWITCH (SW8)
POSITIVE SIGNAL
(FROM MACHINE ON “K4”)
BATTERY NEGATIVE TERMINAL
M8
P200110