36
- FORM NO. 56043058 Hydro-Retriever™ 3800 / 2042 / BR 1100
SQUEEGEE SYSTEM
RED
RED
YEL/BLK
RED/BRN
ORN/GRN
GRN/WHT
GRN/WHT
GRN
BLK
M
GRN
/B
RN
YEL
/GRN
GRN/WHT
YEL/GRN
GRN/BRN
1
9
16
8
BLK
K1
B-
M-
B+
S2
S1
BLU/RED
GRN/WHT
BLK
BLK
RED/WHT
GRN
GRN
BLK
BRN/WHT
WHT
S2
S1
S3
A4
A3
F2
BRN/WHT
GRN/WHT
ORN
BLK/WHT
BLK/WHT
GRN
GRN
BLK
BRN
BLK
WHT
WHT
WHT/BRN
BLK
GRN
GRN
BRN
RED/WHT
(+)
(-)
8
J2
14
7
1
1
2
4
3
7
1
12
6
1
2
4
3
J3
1
4
3
6
7
1
12
6
A2
A1
GRN
BRN
/WHT
M3
SQUEEGEE SYSTEM LIFT MOTOR OVERVIEW
The squeegee pickup tool is raised and lowered by a 36V actuator motor assembly mounted horizontally in the left rear of the chassis underneath
the recovery tank. The main control board assembly A3 regulates (manages) the machine’s squeegee tool system input and output operating
functions. See the Know Your Machine section in this manual for a detailed description of vacuum/squeegee operation modes.
OPERATIONAL OVERVIEW OF THE SQUEEGEE LIFT MOTOR REVERSE FUNCTION
During normal or heavy scrubbing the squeegee operates in the auto mode. To prevent squeegee blade damage and excessive wear the squeegee
tool is automatically lifted from the floor any time the machine is operated in reverse. See Figure 1. To get the squeegee tool to lift in reverse the
drive pedal must be moved off its neutral or forward position, which triggers the needed reverse A2 throttle output. This battery (Pos. +) voltage
signal from the reverse throttle wire delivers the required A3 board input to the J2 connector (pin #12 Wht wire). This then activates an internal
relay circuit that outputs the correct voltage polarity for the M3 squeegee lift motor to run a specified time (output from J3). This raises the squeegee
off the floor to the back up position, which is half of the normal distance observed when in the machine scrub off mode. Moving the drive pedal
back to the neutral/forward position opens the A2 throttle reverse output and the A3 control board loses its input voltage signal. The J3 connector
output reverses the polarity and lowers the tool back onto the floor.
SQUEEGEE LIFT ACTUATOR REPLACEMENT
1
See Figure 2. Remove the Squeegee Tool
(A)
from the Squeegee Mount
(B)
.
2
Lower the squeegee mount to the floor by pressing the Vac/Squeegee button on the control panel. Don’t tun the key switch off, until pushing
apart the battery emergency disconnect
(12)
. This procedure is done to prevent the squeegee mount from automatically raising when the
key is turned off.
3
Remove the (2) Hex HD Screws and Nuts
(C & D)
then remove the Drive Nut Bracket
(E)
from the Arm Weldment
(F)
.
4
Unplug the squeegee lift motor wiring connector from the machine harness.
5
Remove the Retainer Ring
(G)
(next to the motor) and slide the Pin
(H)
out of the chassis mount bracket to compete the motor removal from
the machine.
Note:
New replacement lift actuator motors do not come with the lift nut pre-adjusted.
Important:
After removing the actuator motor and before replacing a new motor or drive nut the IN & OUT limit switches must be set (or checked)
to their correct specifications (see the Electrical System for the Actuator Drive Nut Adjustment instructions).
6
After setting the correct actuator lift nut dimensions follow steps 1-5 in reverse order to re-install.
Service Tip Assembly Note:
Connect the special actuator power cord adapter (PN 56407502 shown in Electrical System
Actuator Drive Nut
Adjustment
) to the lift motor to help position the lift nut and mounting bracket for an easier installation.
FIGURE 1
revised 12/02