OPERATION
35
5700EE 3315353 (9--06)
MACHINE TROUBLESHOOTING
Problem
Cause
Remedy
Trailing water -- poor or no water
pickup
Worn squeegee blades
Rotate or replace squeegee blades
Squeegee out of adjustment
Adjust squeegee
Vacuum hose clogged
Flush vacuum hoses
Vacuum fan screen dirty
Clean inlet screen
Debris caught on squeegee
Remove debris
Vacuum hose to squeegee or
recovery tank disconnected or
damaged
Reconnect or replace vacuum hose
Solution tank not completely closed
Check for obstructions
p
y
Heavy duty batteries posts too tall,
file down posts
Machine front cover mounted too
high, mount cover lower
Torn seals on solution tank
Replace seals
Vacuum fan will not turn on
Recovery tank full
Drain recovery tank
Foam filling recovery tank
Empty recovery tank
g
y
Use less or change detergent
Use a defoamer
Vacuum fan circuit breaker tripped
Reset circuit breaker
Vacuum fan will not turn on, optical
Recovery tank full sensor(s) dirty
Clean sensor(s) and reset key switch
, p
sensor(s)
Oily/ink film buildup on recovery tank Use correct detergent
y/
p
y
sensor(s)
Change to magnetic sensor(s)
Operating in bright sunlight
Install sensor sun shield(s)
Little or no solution flow to the floor
Solution tank empty
Fill solution tank
Solution control cable broken or out
of adjustment
Replace and/or adjust cable
Solution flow turned off
Turn solution flow on
Solution supply lines plugged
Flush solution supply lines
Solution supply line filter dirty
Clean filter
Solution solenoid clogged or stuck
Clean or replace
ES mode: ES switch off
Turn ES switch on
Poor scrubbing performance
Debris caught on scrub brushes
Remove debris
Improper detergent, brush, or pad
used
Check with TENNANT representative
for advice
Worn scrub brush(es) or pad(s)
Replace scrub brush(es) or pad(s)
Scrub brush motor circuit breaker(s)
tripped
Reset circuit breaker(s)
Reduce scrub brush down pressure
Uneven brush pressure, level scrub
head
Broken brush drive belts on
cylindrical scrub head, replace belt
Check with TENNANT representative
for advice
Low battery charge
Charge batteries until the charger
automatically turns off
Tire pressure low
Increase tire pressure
Poor propelling traction
Brush pressure set too high
Decrease brush pressure
p p
g
Tires slip on oily or waxed floors
Check with TENNANT representative
for advice
Uneven brush down pressure
Level scrub head
p
Broken brush drive belts on
cylindrical scrub head, replace belt