88Service Manual – SC6000 30 - Solution System
Detergent Pumps
• If the pumps appear to be operating (by touch or sound), but no uid is owing, it’s likely the diaphragm
is damaged and the pump needs replacement.
• If neither pump is working, make sure the machine is properly congured for the EcoFlex option in the
controller.
• If only one pump is working, swap the pump wires (pump 1 for 2) according to the wire color codes shown
on page 84.
– If the same pump remains faulty, then you know the pump is faulty.
– If the other pump becomes faulty, then you know that the fault lies in the wiring between the pump
and the controller.
Removal and Installation
Solution Solenoid
The solution solenoid is located in the center of the
scrub deck on the rearward side of the deck. If the
purpose for servicing the solenoid is to clean the valve
seat, you may choose to separate the top and bottom
while still in the machine, as described in step 5.
1. Close the manual shutoff valve located at the
front-right side of the solution tank.
2. Disconnect the electrical connector (B) from the
top of the solenoid.
3. Loosen the hose clamp (C) and remove the
solution supply hose (D) from the solenoid inlet.
4. Remove the two screws (E) that secure the
solenoid to the scrub deck frame, and lift the
solenoid upward to remove it from the outlet hose
(F).
5. If necessary, separate the upper and lower halves
of the solution solenoid by twisting the upper half
counterclockwise. This permits cleaning of the
valve seat.
B
A
E
C
F
D
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