6. Remove any debris lodged in the pickup vacuum
shoe (Figure 25).
FIG. 25
7. Clean the machine housing with an all purpose
cleaner and damp cloth.
ATTENTION: Do not power spray or hose off
machine. Electrical component damage due to
water is not covered by warranty.
WEEKLY MAINTENANCE
(Every 20 Hours of Use)
1. Inspect the spray tips for proper spray pattern.
To inspect spray pattern:
a. Remove the shroud above the brush base and
lower the brush base to the floor.
b. Remove the spray bar from the brush base.
Do not disconnect the spray bar from the
quick-disconnect coupler.
c. Plug the power cord into wall outlet and turn
the key to the ON position.
d. Set the machine in the Deep Clean Mode and
turn the speed control knob to the lowest
setting.
e. While holding the spray bar with spray tips
pointing downward, briefly turn the control
grips forward. Observe the spray pattern for
any blockage (Figure 26).
f.
Clean or replace defective spray tips (See
MONTHLY MAINTENANCE).
FIG. 26
Tennant 1530 (12- -02)
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2. Remove the solution tank filter from underneath
the machine and clean the screen. Make sure the
solution tank is empty before removing filter
(Figure 27).
FIG. 27
MONTHLY MAINTENANCE
(Every 80 Hours of Use)
1. Flush the pump system with an acetic acid
solution to dissolve normal alkaline chemical
buildup. Follow procedure below:
a. Position the machine over a floor drain.
b. Pour 11 liters (3 gal) of hot water into the
solution tank, do not exceed 60°C (140°F).
Pour 750 ml (24oz.) of an acetic acid into the
solution tank.
FOR SAFETY: When using machine, follow mixing
and handling instructions on chemical containers.
c. Operate the machine in the Deep Clean Mode
for 30 seconds. To keep the machine from
propelling forward, raise the brush base and
place a 16 inch 2x4 board centered under the
pickup vacuum shoe. Then lower the brush
base in order to lift the drive wheels off the
floor (Figure 28).
FIG. 28
d. After operating the machine for 30 seconds,
shut off the power and let the machine set
overnight to allow the acetic acid solution to
breakdown the alkaline buildup.
OPERATION
15