Deck Actuator Assembly; Scrub Deck Up; Scrub Deck In Vacuum-Only Position - Clarke SA40 56104487 (20D) Service Manual

Service Manual – SA40

Deck Actuator Assembly

Scrub Deck Up

When the Scrub System is
switched from active to not active,
the in the
Gang Switch A1 Control
switches on the power to the
Board
Brush Lift Actuator Motor M3
Note: The
Gang Switch
position determines the
polarity to run the
Lift Actuator Motor
appropriate direction to
raise or lower the scrub
deck. The
Gang Switch
is, in reality, a "virtual"
switch that is a type of
transistor driver circuit
in the
A1 Control Board
The
Deck Actuator Assembly
the scrub deck until the
the . This shuts
Upper Limit Switch
off the power to the
Brush Lift
.
Actuator Motor

Scrub Deck in Vacuum-only Position

When the Scrub System is not active
and the Vacuum Power Adjustment
Switch is pressed to enable the wet
vacuuming mode, the
Gang Switch
the switches on the
A1 Control Board
power to the
Brush Lift Actuator Motor
. The
M3 Deck Actuator Assembly
the scrub deck to (position)
POS
When the deck reaches
closes the
Cam S7 POS 1
drops the voltage seen at the
input from 5v to 0v. The
Position 1
then switches polarity to
Gang Switch
run the
Brush Lift Actuator Motor
opposite direction for a predetermined
period of time to compensate for
"overshoot" and position the deck at
just the right height. The
then shuts off the power to the
Board
Brush Lift Actuator Motor
Control Board
.
Brush
in the
Act. Position 1 (5v)
.
Act. Position 2 (5v)
raises
opens
Cam
Control Board
in
lowers
.
1
the
POS 1
switch, which
Act.
in the
Act. Position 1 (0v)
A1 Control
.
A1
B+
B-
Gang
Switch
B-
B+
J1-8
B-
J2-12
+5V
J2-11
+5V
A1
B+
B-
Gang
Switch
B-
B+
J1-8
B-
J2-12
+5V
J2-11
+5V
Act. Position 2
Scrub System
Deck Actuator Assembly
Upper
Cam
Limit
Brush Lift
Switch
Actuator
M
Motor M3
Lower
Limit
Switch
D YEL/BLK
C RED/VIO
S7 POS 1
F BLK/WHT
S6 POS 2
Deck Actuator Assembly
Upper
Limit
Brush Lift
Switch
Actuator
M
Motor M3
Lower
Limit
Switch
D YEL/BLK
C RED/VIO
Cam
S7 POS 1
F BLK/WHT
S6 POS 2
81