W12 Operator’s Manual Overview - 6
Major Components
Item Description
1. Truck Chassis Diesel truck chassis (see “Specifications” on page 128 for detailed
information on the truck chassis).
2. Water Tanks Four interconnected polyethylene tanks equipped with sight gauges and
drain valves hold clean water for use during excavation operations. Total
water capacity is 1,200 gallons.
3. Debris Tank Water and debris is captured in the debris tank. The tank has a capacity of
12 cubic yards of material. It is also designed as a Tip-Tank style of debris
tank, operating like a dump truck to facilitate the off-loading of debris. It is
equipped with a hydraulically actuated dump door and locking system, as
well as a vacuum boot connection system, that seals the vacuum duct
when the tank is lowered down. The debris tank has a port in the top to
visually check tank level or take samples. Two gate valves in the rear door
can also be used to discharge water and debris. The door is equipped with
dual safety locks to keep the door in the open position for cleaning and
maintenance.
4. Boom A hydraulically operated boom is used to vacuum dirt, water, and debris
during excavation operations. The boom is controlled either manually or
via a remote control. Multiple dig tubes are provided to extend the reach
of the boom during excavation.
5. Silencer Two silencers direct air flow to minimize environmental noise levels.
6. Cyclone Two cyclonic separators direct the air flow in a circular path, where
centrifugal force causes the airborne materials to be separated from the
air stream and drop out.
7. Water Heater The water heater provides hot water for excavation operations in cold
weather. The water heater is fueled using diesel fuel from the truck fuel
tank.
8. Air Compressor (Optional) A high pressure air dig system, based on a hydraulically driven
compressor system, is available. The air compressor provides pressurized
air to the air lance.
9. Control Panel and
Remote Control
The main control panel for the W12 is located in a cabinet on the curb side
of the truck. This cabinet also stores the Remote Control (with charging
cradle) and the truck scale.
10. Manual Controls Manual control levers for the boom, debris tank lift, rear door, and other
functions are located on the curb side near the rear of the truck.
11. Blower The blower creates the primary air movement creating suction through
the boom. The blower is driven by the transfer case.
12. Transfer Case The transfer case is installed in a split-shaft configuration on the truck
driveshaft. Outputs of the transfer case drive the hydraulics of the truck
and the blower.
