Tennant 7400, Руководство оператора, Страница: 51 / 92

OPERATION
49
7400 (GM) 330970 (9--04)
MACHINE TROUBLESHOOTING
Problem Cause Remedy
Trailing water -- poor or no
water pickup.
Worn rear squeegee blades. Rotate or replace squeegee
blades.
Rear squeegee out of adjustment. Adjust rear squeegee.
Worn side squeegee blades.
Replace side squeegee blades.
Side squeegees out of
adjustment.
Adjust side squeegees.
Too much solution flow to floor. Reduce solution flow to floor.
Vacuum hose clogged. Flush vacuum hoses.
Recovery tank full. Drain recovery tank.
Check ES filter
Float stuck shutting off vacuum. Clean float.
Debris caught on rear 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 the
fl
Solution tank empty. Fill solution tank.
floor.
Solution supply lines plugged. Flush solution supply lines.
ES switch off. Turn ES switch on.
Solution flow switch turned off. Turn solution flow switch on.
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.
ES system does not fill solution
t k
Clogged solution pump or lines. Flush ES system.
tank.
ES float stuck. Clean floats of debris.
Clogged ES pump filter. Clean filter.
Water levels too low in tanks. Add water.