Operator`s manual

Page 10 Clarke
®
Ext -311 Owner's Manual
MAINTENANCE
WARNING: Maintenance and repairs must
be done by authorized person-
nel only. Keep all fasteners tight.
Use only genuine Clarke parts.
WARNING: Do not operate this machine un-
less it is completely assembled.
NOTE: For maintenance of the floor tools or power
brush tools, read the manual given with the tools.
After Each Use of the Machine
1. To remove unused cleaning solution from the
solution tank, put the end of the vacuum hose in
the solution tank. Start the vacuum motor. Stop
the motor when the tank is empty.
2. To prevent damage to the valves and jets, flush
one gallon of clean water through the solution
system and the tools.
3. Disconnect the power cord from the outlet.
4. Remove the recovery tank cover.
5. Lift the pail and discard the solution.
6. Rinse the pail with clean water.
7. Use a dry cloth to wipe the tools and both tanks,
inside and out.
8. Apply a small amount of silicone lubricant to the
quick-disconnect fittings. To prevent damage to
the O-rings, do not use an oil lubricant.
9. Clean and inspect the gasket on the vacuum
shut-off valve. If the gasket is damaged, replace
the gasket.
10. Inspect and clean the filter screen in the bottom
of the solution tank. See figure 9. To remove the
filter screen, turn the filter counterclockwise. To
Figure 9