Troubleshooting; Poor Pick-Up At Squeegee - Clarke CA90 32T Service Manual

Service Manual – CA90 32T

Troubleshooting

PrProblem
• No Vacuum Motor Operation
(Other functions work)

• Poor pick-up at squeegee

Restricted air flow
Air Leaks
Squeegee Issues
Poor pick-up at squeegee
Good water pick up performance depends on the proper amount of air flowing through the squeegee
assembly. Air entering the vacuum system before the squeegee will reduce it's ability to pick up water.
Anything that restricts the movement of air through the system will also reduce it's ability to pick up water.
It is also critical to the recovery system that the squeegee blades are in good condition, and in the correct
position (angle). Adjustment of the squeegee angle and instructions for replacing the squeegee blades will be
discussed in the squeegee system section.
Cause
• Vacuum circuit breaker tripped
• Defective vacuum motor
• Defective vacuum solenoid
• Defective vacuum switch
• Defect in wiring
• Clogged or kinked vacuum
(pick-up) hose
• Clog at center tube of
squeegee casting, pick-up tube
adapter, or recovery tank entry
hole
• Recovery tank cover gasket is
leaking
• Drain hose stopper is not fully
seated
• Pick-up tube adapter is not
adjusted properly
• Drain hose has leaks
• Squeegee angle not correct
• Squeegee not mounted
properly
• Squeegee blades have dirt or
debris between the blade and
the floor
• Squeegee blades are worn out
or torn
Recovery System
Correc tion
• Reset circuit breaker
• Replace vacuum motor
• Replace solenoid
• Replace vacuum switch
• Trace wiring using circuit
diagram
• Check and clean out vacuum
(pick-up) hose
• Check and clean all (3) places
• Insure the cover is fully in
place. Replace the cover
assembly if there is damage to
the gasket
• Seat the stopper into the drain
hose properly
• Adjust pick-up tube adapter
(See instructions above in
maintenance section
• Replace drain hose assembly
• Adjust squeegee angle
• Confirm that the squeegee
is mounted firmly, and that
the "T" nuts are seated into
the notches of the squeegee
bracket
• Clean off the squeegee blades
using a damp cloth
• Flip the squeegee blades to put
a different edge on the floor
• Change the squeegee blades
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