ASPHAL
T OPERA
TIONS
46 Asphalt Operations
Loading Through the Manhole
To reduce the risk of accidental discharge of as-
phalt, the asphalt pump should not be running, the 4
way valve should be in home position, all tank valves
should be closed, and both the load and transfer
line caps should be on and secured when loading
through the manhole.
WARNING
To prevent possible injury, always open the
the manhole cover slowly. Pressure build up
in the tank may cause the cover to burst open.
WARNING
To prevent possible burns from foaming or
violent eruption: Do not load tank with material
temperature over 200° F if water or
condensation is present in tank, or if emulsion
was used in the previous load. Do not heat
material over 200° F if moisture or emulsion is
present in tank.
Handspray Valve Position
Return
Valve
Open
Hand Spray Valve
Closed
4 Way Valve
Tank
Valve
Closed
Master
Handspray
Valves Off
Transfer Valve
Closed
Transfer Line
Suck Back Valve
Closed
Flush Valve
Closed
Suck Back
Valve
Closed
Transfer Line cap
on and secured
Load Line cap
on and secured
HOME
(Keyway in
12 o’clock
Position)
OFF
Figure 61 - Valve Positions for Loading Through the Manhole
Refer to Figure 61. for the following procedures.
1. Park the Distributor in the desired location for
loading overhead through the manhole.
2. Before exiting the cab, turn the POWER switch OFF.
3. Set the truck parking brake and turn the engine off.
4. After the desired amount of product is in the tank
and the supply tank valve is closed, close and
secure the manhole lid before moving the Distrib-
utor.