MAINTENANCE
21
Tennant 1230 (7–96)
PROBLEM
CAUSE
SOLUTION
Foam in recovery tank
overflows
Recovery tank overfilled
Empty recovery tank
Too much or wrong chemical
Reduce dilution/change to proper
chemical
Soap residue in carpet from previous
cleanings
Reduce chemical dilution or rinse
carpet with clean water first. Consider
using chemical defoamer in recovery
system
System overfilled (recycle mode)
Reduce solution level
Foam exits vacuum motor
cover at rear of machine
System overfilled
Reduce solution level
Too much or wrong chemical
Reduce dilution/change to proper
chemical
Solution leaks from machine
Loose clamps/fittings
Tighten/replace
Broken hoses/components
Inspect/repair/replace
Components damaged from freezing.
Follow freeze protection procedures in
future
Inspect/repair/replace