OPERATION
16
Tennant 1530 (12--02)
e. Next day, disperse the remaining acetic acid
solution and rinse the solution system with 11
liters (3 gal) of clean water.
2. Disconnect the spray bar and twist out the six
quick-release spray tips. Soak the spray tips in an
acetic acid solution for up to six hours. Do not use
pointed objects to unplug tips, damage will occur
(Figure 29).
FIG. 29
3. Lubricate the caster grease fittings with a water
resistant grease (Figure 30).
FIG. 30
4. Lubricate all pivot points and rollers with silicone
spray then coat with a water resistant grease to
maintain smooth operation.
5. Check the machine for water leaks and loose nuts
and bolts.
QUARTERLY MAINTENANCE
(Every 250 Hours of Use)
Check the drive transaxle, vacuum and brush motors
for carbon brush wear, replace brushes when worn to
a length of 10 mm (0.38 in) or less.
Contact an Authorized Service Center for carbon
brush inspection.
FOR SAFETY: When servicing machine, all repairs
must be performed by a qualified service person.
ADJUSTING THE BRUSH HEIGHT
The brush height is factory set to accommodate
commercial grade loop pile carpets. When operating
machine on taller carpet piles, the brush height must
be adjusted accordingly. If the brush height is not
properly adjusted, the brush circuit breaker may trip.
1. Park the machine on a level surface. Lower the
brush base, turn the key off and unplug the cord.
FOR SAFETY: Before leaving or servicing
machine, stop on level surface, turn off machine
and unplug cord from wall outlet.
2. Remove the metal shroud above the brush base
to access the two adjustment knobs (Figure 31).
FIG. 31
3. Using a 7/16” wrench, loosen the top and bottom
jam nuts on the two adjustment knobs, 2 nuts per
knob (Figure 32).
ADJUSTMENT
KNOBS
JAM
NUTS
FIG. 32
4. Turn the adjustment knobs counter-clockwise to
raise brush and clockwise to lower. Make sure to
turn both knobs EQUALLY in order to keep brush
parallel to the floor. One full turn of the knob will
move the brush 1.5mm (1/16”). Retighten the top
and bottom jam nuts after adjustment is made and
replace the metal shroud.
