Specifications

OPERATION
550 Gas/LPG 330650 (12--99)
22
MACHINE TROUBLESHOOTING
Problem
Cause Remedy
T railing water -- poor or no
water pickup
Worn rear squeegee Rotate or replace rear squeegee
blade
Rear squeegee out of adjustment Adjust rear squeegee
Worn side squeegee Replace side squeegee blade
Side squeegee out of adjustment Adjust side squeegee
Vacuum hose clogged Flush vacuum hoses
Recovery tank full Drain tank
Float stuck shutting off vacuum Clean float
Vacuum fan drive belt loose or
broken
Adjust, or replace and adjust belt
Debris caught on squeegee Remove debris
Foam filling recovery tank Empty recovery tank; use less or
change detergent
Vacuum hose to rear squeegee
disconnected or damaged
Reconnect or replace vacuum
hose
Vacuum fan to recovery tank hose
damaged
Replace hose
Little or no solution flow to
f
l
Solution tank empty Fill solution tank
floor
Solution control linkage broken or
out of adjustment
Replace and/or adjust linkage
Solution supply lines plugged Flush solution supply lines
Solution spreader holes plugged Flush spreader holes
Poor scrubbing performance Debris caught on scrub brushes Remove debris
Improper detergent or brushes
used
Check with Tennant representative
for advice
Worn scrub brushes Replace scrub brushes
Scrub brushes out of adjustment Adjust scrub brushes
Debris hopper full Empty hopper
Brushes have rotation set Rotate brushes end-for-end
Scrub brush drive failure See HYDRAULIC COMPONENTS
TROUBLESHOOTING --
Hydraulic Motor Failure, in the
MAINTENANCE section
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