OPERATION
12
Tennant 1500 (11–99)
FIG. 21
5.
Inspect spray tips for proper spray pattern:
a.
Pull out vacuum/drive circuit breaker button,
located at rear of control console.
b.
Lower brush/pick–up head and remove
detachable spray bar from brush base. Do not
disconnect bar from quick coupler. Raise
brush after removing spray bar (Figure 22).
c.
Turn on main and pump switches.
d.
Rotate control grips and observe spray
pattern. Pattern should fan out evenly across
the width of the spray bar.
e.
Clean or replace defective twist-out spray tips
if necessary (See Weekly Maintenance).
FIG. 22
MONTHLY MAINTENANCE
(Every 80 Hours of Operation)
1.
Flush out tanks and solution lines:
a.
Pull out the vacuum/drive circuit breaker
button, located at rear of control console.
b.
Pour 750 ml (24 oz) of an acetic acid solution
with 11.3 L (3 gal) of hot water into solution
tank; do not exceed 60
C (140
F).
FOR SAFETY: When using machine, follow
mixing and handling instructions on chemical
containers.
c.
Turn on the main and pump switches.
d.
Over a floor drain, rotate control grips and
hold for one to two minutes.
e.
Shut off power and let machine set overnight
to allow acetic acid solution to breakdown
alkaline buildup.
f.
Next day, operate pump to disperse remaining
acetic acid solution.
g.
Then rinse out solution tank and solution lines
with clean water.
h.
Reset drive circuit breaker button when
completed.
2.
Remove detachable spray bar from brush base.
Remove twist-out spray tips from spray bar and
soak in 118 ml (4 oz) acetic acid solution for up to
6 hours. After soaking tips, use a small brush to
remove excess alkaline and rinse thoroughly. DO
NOT use pointed objects to unplug spray tips
(Figure 23).
FIG. 23
3.
Lubricate caster grease fittings with a water
resistant grease.
4.
Lubricate all linkage pivot points with silicone
spray, then coat with a water resistant grease to
maintain a smooth operation.
5.
Check machine for water leaks and loose nuts and
bolts.
EVERY 250 HOURS OF OPERATION
Check drive and vacuum motors for carbon brush
wear, replace brushes if worn to a length of 10 mm
(0.38 in) or less.
