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The description of the inputs and the outputs are as follows:
Outputs
A
Squeegee raise output relay
B
Squeegee lower output relay
D
Multimode output relay (Connects to speed control board to engage high speed)
E
Solution water solenoid output relay
F
Vacuum motor output relay
G
Brush motor output relay
H
System start output relay
I
Chemical solenoid output relay
Inputs
J
System ready input
K
Forward input
L
Reverse input
M
Off aisle cleaning input
N
Recovery tank full input
O
Recycle on input
R
Solution empty input
The inputs/outputs are self explanatory aside from the system start and system ready. When the
operator presses "1" on the main keyboard the system start output will energize for 1 second.
This will send +36V through the recharge switch and through the keyswitch. If both of these
switches are closed then the main control relay will turn on. When the main control relay turns on
it sends +36V back to the board to the system ready input. If the board does not get +36V to the
system ready input within 1 second then the system start output will deenergize. The only reason
the system ready input would not turn on would be the recharge switch or the keyswitch being
open.
As input changes from 0V to +36V the letter on the first line will change from lower case to a
capitol letter. Conversely, as input changes from +36V to 0V the letter on the first line will change
from a capitol letter to a lower case letter.
Minuteman PowerBoss Inc. Copyright 2000
Operation, Maintenance & Troubleshooting
15
3800 Rider Scrubber (7/02)
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