Crescent CS7010 - Troubleshooting; Inadequate solution flow to the brushes in the scrub mode

216Service Manual – CS7010™ 30 - Solution System
Troubleshooting
Note: You can use the Service Mode to toggle the various system components on and off to check for
function. Refer to the Control System/Service Mode section for information on how to enter
and use the Service Mode.
Problem Cause Correction
Inadequatesolution
owtothebrushesin
the scrub mode
Inadequatesolutionlevelin
tank
Checkthesolutionlevel.
Thesolutionlterscreenis
plugged.
Cleanthesolutionlterscreen.
The solution shutoff valve is
plugged or inoperative.
Clean or replace the solution shutoff valve.
The solution solenoid valve is
plugged or not functioning.
Checkthesolutionsolenoidcoilresistance.Itshould
measure72ohms±10%.Ifthecoilresistanceisnot
withinspecreplacethesolutionsolenoidvalve.
The solution manifold/solution
hoses/solution nozzles are
plugged.
Checkandcleanthemanifold/hoses/solutionnozzles
as necessary.
The solution control pump
(M19) is not operating
(EcoFlex™ machines only).
Checkforvoltageatthepump.
• Ifthereisvoltageatthepump,replacethepump.
• Ifthereisnovoltageatthepump:
1. Checkthewiringandcircuitbreakersupstreamof
the pump.
2. ChecktheJ3-2outputfromA1MainMachine
Controller.
Inadequatesolution
owtothebrushesin
the extended scrub
mode
The extended scrub function
is not installed in the
congurationmenu.
Installtheextendedscrubfunctionintheconguration
menu.
The stainer in the recovery
tankisdirtyorplugged.
Remove and clean the strainer.
The extended scrub level
(oat)switch(S4)isnot
providing a ground to J7-15
InputonA1MainMachine
Controller.
Theswitchshouldbeclosedwheninthelowermost
position(tankempty),andopenwheninthe
uppermostposition(tankfull).
Ifthecontinuitythroughtheswitchinitsupperand
lowerpositionsisnotcorrect:
1. Checkthewiringandrepairasnecessary.
2. IfthewiringisOK,replacetheswitch.
The extended scrub pump
(M25) is not operating
correctly.
Checkforvoltageatthepump.
• Ifthereisvoltageatthepump,replacethepump.
• Ifthereisnovoltageatthepump:
1. Checkthewiringandcircuitbreakersupstreamof
the pump.
2. ChecktheJ3-1outputfromA1MainMachine
Controller.