145
Scheduled Maintenance
5.20 Winterization &
Storage Procedures
When operating the truck in freezing tempera-
tures, it is extremely important to properly win-
terize the water and vacuum systems whenever
the truck is shutdown.
Water freezing in the pump, vacuum system, and
ttings will expand, causing irreparable damage
to components.
Vacuum System Shutdown & Winterizing
Water freezing in vacuum system components
can cause serious damage to the blower, silencer,
lter canister, drain valves and other vacuum
system components. It is important to follow the
proper procedure when shutting down the vacuum
system during cold weather operations or winter
storage to ensure accumulated water is removed
from critical areas in the system.
Use the following procedure to shutdown and
winterize the vacuum system:
1. Allow the vacuum blower to operate for a
couple of minutes after shutting down the high
pressure and charge water pumps to clear
waste water from hoses and dry out blower
system.
2. Activate the Debris Tank Drain switch to open
the drain valves and drain waste water from
the debris tank.
3. Drain any accumulated water from the vacuum
lter canister.
4. If the machine will be shutdown for an ex-
tended period:
• Dump the debris tank and completely clean
the tank with clean fresh water. Make sure
to thoroughly ush the drain valves and
allow all water to completely drain from
the tank and valves.
• Thoroughly clean the vacuum lter canister
and the lter.
5. Leave the drain valves open on the vacuum
canister and debris tank. Lower the debris
tank to the full down position. Then close and
latch the door.
Debris Tank Drain Valves
Vacuum Canister Drain Valve & Hose
FILTER
CANISTER
SILENCER
Vacuum System Blower, Silencer & Filter Canister
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