Solution System
104
Service Manual – SC1500
Maintenance
Cleaning the Water Filter
1
Close the solution
Ball Valve
to shut off the
solution flow from the solution tank to the
Water
Filter
2
Unscrew the
Filter Cap
3
Remove and clean the internal filter screen.
4
Reinstall the filter screen and
Filter Cap
5
Open the
Ball Valve
and check for leaks.
Troubleshooting
Problem
Cause
Correction
No solution to the
Scrub Deck (scrub
system is working).
Plugged Water Filter.
Clean or replace the Filter.
Plugged solution line or ball
valve.
Check the solution lines and ball valve and clear or
replace as necessary.
No voltage to the Solution
Solenoid Valve.
1. Check the voltage on pin J3-11 on the A1 Control
Board. The signal, referenced to ground, should
be approximately 24.4v with the Solution Solenoid
off, 0.12v with the Solution Solenoid on.
2. Check the wiring from pin J3-11 on the A1 Control
Board to the Solution Solenoid Valve and repair
as necessary
3. Check the wiring from the Key Switch to the
Solution Solenoid Valve and repair as necessary.
The Solution Solenoid Valve is
not operating correctly.
1. Check the Solution Solenoid Valve coil resistance.
If the resistance is not 55.5 Ohms ±10%, replace
the Valve.
2. If the Solution Solenoid Valve coil resistance is
within spec, check for clogged ports, binding or a
mechanical problem. Repair or replace the Valve
as necessary.
Detergent Pump not
operating
No voltage to the Detergent
Pump
Check the wiring from pins J1-1 and J1-3 on the A1
Control Board to the Detergent Pump. Repair the
wiring as necessary.
Check for voltage from pins J1-1 and J1-3 on the A1
Control Board. If there is no voltage from the pins J1-1
and J1-3, try installing a different Control Board.
The Detergent Pump is faulty.
Replace the Detergent Pump
No detergent flow to
the solution line
The Detergent Cartridge is
empty.
Refill the Detergent Cartridge.
Restricted or kinked detergent
hoses.
Check the hoses from the Detergent Cartridge to the
Detergent Pump, and from the Detergent Pump to
the tee fitting in the solution line. Clear or replace the
hoses as necessary.
Ball
Valve
Filter
Cap
Water Filter
