30
OPERA
TION
Close the transfer valve.
Decrease the pump speed to approximately 50 GPM.
Close the “Suction” valve.
Close the valve at the storage tank.
Open the suckback valve in the transfer line, and
carefully break the connection at the storage tank,
between the storage tank valve and the fill hose to
allow air into the hose.
WARNING
To prevent burns: Always wear insulated
gloves when handling spray bar sections or
hoses.
Increase the pump speed to approximately 150 GPM
for 2 minutes.
Increase the pump speed to 200 GPM. Carefully and
slowly disconnect the hose at the storage tank end and
elevate the hose to allow the maximum drainage of as-
phalt to the transfer line. Allow the pump to continue
turning while the hose is carefully disconnected from
the transfer line and the transfer line cap is replaced
and secured.
Then shut the pump down and return the suckback
valve to its normal position.
Pump Off Operations
Connect the pump-off hose from the storage tank to
the transfer line.
When preparing to pump off, ensure that all valves
in the pump-off line between the distributor and the
storage tank are open before opening the suction valve
on the distributor.
Set all of the valves and levers to their proper posi-
tions for pump-off.
Place the “Rotary Actuator” knob in the “Circulate
in Tank” position.
Open the “Transfer” gate valve.
Open the “Suction” valve.
Increase the pump speed to approximately 150 GPM
using the “Circulation Rate” switch in the cab, or set
the “Pump Control” switch in the rear control box to
“Rear” and adjust the pump speed with the “Pump Con-
trol” knob. Remember that the GPM reading is only
available in the cab.
Turn the “Return” valve clockwise to the “Closed”
position, watch that the pump off hose does not be-
come plugged.
If this happens open the “Return” valve by turning
the handwheel counter clockwise.
When pump-off is complete, turn the “Return” valve
to the “Open” position.
Figure 12. Valve Positions for Pump Off
Return Valve
Closed
Suck
Back
Off
Hand
Spray
Hand Spray Valve Positions
Hand Spray
Valve
Closed
4 Way Valve
Circulate in Tank
Suction Valve
Open
Suck Back
Valve
Closed
Handspray
Valve
Off
Transfer
Valve
Open
Transfer Line
Suck Back
Valve Closed
Suckback
Control Cylinder
Closed
Flush Valve
Closed
Butterfly Valve
Cylinder Extended
Butterfly Valve
Open
Содержание Black-Topper Shooter II
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