OPERATION
6
Tennant 1220 (11–99)
MONTHLY MAINTENANCE
1.
Flush pump system with an acetic acid solution to
dissolve normal alkaline chemical buildup.
a.
Premix .5L (16 oz) of an acetic acid solution
with 7.5L (2 gal) of hot water 60
C (140
F )
and pour into solution tank.
FOR SAFETY: When using machine, follow mixing
and handling instructions on chemical containers.
b.
Turn on Vacuum/Pump switch.
c.
Position brush over floor drain and operate
machine for one minute.
d.
Shut off machine and allow remaining solution
to break down alkaline buildup overnight.
e.
Next day, spray out remaining solution and
flush system with 11L (3 gal) of clean water.
STORING MACHINE
1.
Before storing machine, be certain to flush tanks
and drain machine of all water.
2.
Store machine in a dry area in the upright position
with brush raised off floor.
3.
Remove recovery dome to promote air circulation.
ATTENTION: Do not expose to rain. Store
indoors.
ATTENTION: If storing machine in freezing
temperatures, be sure that machine, pump and
spraying system are completely drained and dry.
