Machine Maintenance - Tennant 1620 Operator And Parts Manual

MACHINE MAINTENANCE

To keep machine in good working condition, simply
follow the daily, weekly, and monthly maintenance
procedures.
FOR SAFETY: When leaving or servicing machine,
stop on level surface and turn off machine.
FOR SAFETY: When servicing machine, disconnect
battery connections before working on it.
ATTENTION: Contact an Authorized Service
Center for machine repairs. Machine repairs
performed by other than an authorized person will
void your warranty.
DAILY MAINTENANCE
(Every 4 Hours of Operation)
1. After using Mist Mode, flush out machine solution
system. Press and hold solution switch toward the
solution flush symbol and continue to operate
machine 30–50 feet or 60 seconds
2. Recharge batteries, see CHARGING BATTERIES.
NOTE: Recharge batteries ONLY after a total of 30
minutes of use or more. This will prolong battery life.
3. Drain leftover solution in solution tank. Pull fill-port
tube off hose barb and drain into floor drain or
bucket (Figure 30). Tilt machine back to
completely drain.
Tennant 1620 (01–99)
FIG. 30
4. Empty and rinse out hopper (Figure 31).
5. Inspect filter bag. If bag's inner surface is
completely coated with debris replace with new
bag (Figure 32).
6. Inspect brushes for entangled debris.
7. Clean machine 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 Operation)
1. Check fluid level in battery cells (See Battery
Maintenance).
2. Clean battery tops to prevent corrosion (See
Battery Maintenance).
3. Check for loose or corroded battery cables.
4. Remove inline strainer filter and clean. Make sure
solution is empty before removing filter
(Figure 33).
OPERATION
FIG. 31
FIG. 32
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