OPERATION
10
Tennant 1240/1260 (04--02)
10. Clean machine with a nonabrasive, nonsolvent
cleaner (Figure 18).
FIG. 18
MONTHLY MAINTENANCE
(Every 80 Hours of Operation)
1. Flush pump system with an acetic acid solution to
dissolve normal alkaline chemical buildup.
FOR SAFETY: When using machine, follow mixing
and handling instructions on chemical containers.
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.
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.
2. Lubricate wheels with a water resistant oil.
3. Inspect machine for water leaks.
4. Inspect machine for loose screws.
QUARTERLY MAINTENANCE
(Every 250 of Hours of Operation)
Check vacuum motor for carbon brush wear. Replace
brushes when worn to a length of 10mm (0.38 in) or
less. Contact your Authorized Service Center for
carbon brush inspection.
SERVICING MACHINE
To access internal components for repair, open
machine as described below.
WARNING: Unplug Power Cord Before
Servicing Machine.
FOR SAFETY: When servicing machine, use
manufacturer supplied or approved replacement
parts.
1. Remove two hex--head bolts at front of machine,
using a 9/16” wrench.
ATTENTION: Make sure tanks are empty before
opening.
2. Carefully hinge tank backwards away from chassis
(Figure 19).
FIG. 19
3. When closing machine, keep fingers clear and be
careful not to pinch or kink internal hoses or
wiring. Replace and tighten hex-head bolts.
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 lid to promote air circulation.
WARNING: 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.
RECOMMENDED STOCK ITEMS
Refer to Parts List section for recommended stock
items. Stock Items are clearly identified with a bullet
preceding the parts description. See example below:
