pump's impeller is designed for temperatures between
45°F and 160°F.
The wash down system is used with the asphalt
The system's pump is operated by means of a
emulsion system to clean the rotor hood and adjacent
"startstop" switch at the instrument panel. A liquid by-
areas of accumulated asphalt or emulsion.
pass is designed into the system that returns fuel to the
tank when the pump is started and the nozzle is closed.
Diesel fuel, drawn from the engine fuel tank, is used as
the cleaning agent. Do not run pump dry for more than
30 seconds as lack of liquid will burn the impeller. The
Figure 1-15. Wash Down System