If the pump has been pumping liquid containing a
determine optimum forward travel speed. For example,
considerable amount of solids, it is advisable to flush the
select a speed of 112 feet per minute. This would
solids out of the body before refilling with liquid. In
indicate from the application chart, Table 1-3, a
freezing weather, the pump should be primed with warm
quadrant setting for the metering valve of seven for
water if possible. Always drain pump after it has been
water or eight for emulsified asphalt at 112 fpm. The
operating in freezing temperatures.
flow rate as indicated on the application chart will be 400
gallons per minute which will be read on the gal./min.
Attach suction hose to the tank truck. Suction hose
gauge. The gallons per lineal foot will be 3.57 as
connections must be tight with no leaks. Air being
indicated in column six. With the figure of 3.57 gallons
drawn into the suction line affects the pumping capacity.
per lineal foot and knowing the tank truck capacity, it
Make sure outlet valve on tank truck is open after
can be determined how many lineal feet will be covered
connecting the hose.
with the capacity of the tank truck. A 5,000 gallon tank
truck will cover approximately 1,400 lineal feet of soil to
Start machine engine and run at 2,000 rpm when
processing the soil.
The proportioning gauge will indicate whether or not the
Using the application chart, Table 1-3, as an initial start
liquid being pumped is in relationship to the feet per
(per example in paragraph 2) turn knob on gallons per
minute travel speed. When the needle varies to the left,
square yard gauge to desired setting.
"lean," this indicates an adjustment of more liquid is
needed and the metering valve must be opened by
Open metering valve by actuating the metering valve
actuating the metering valve control lever.
control lever to indicated setting on application chart.
A needle variance to the right, "rich," indicates too much
Start pump engine and run at governed engine rpm.
liquid is passing in relationship to the feet per minute
travel speed and a closing adjustment to the metering
valve must be made.
It is always better to vary the liquid volume so that a
constant forward speed may be maintained by the tank
truck Pulvi-Mixer train.
The following V.P.I.
fluid handling suggested
instructions are to be used with the preceding
instructions on "Forward and Reverse Travel" and the
"Material Processing" instructions.
Attach suction hose to the liquid pump intake.
Swing the boom around to the front of the machine and
thread hose through the spring loop and attach end of
spring to the boom hook.
CAUTION: Do not operate pump without
liquid in the pump body as operating pump
dry will result in damage to the seal.
The liquid pump must be primed before starting
Remove priming plug from the pump and use liquid
from the tank truck to fill pump body. Replace plug.
(CAUTION: DO NOT ATTEMPT TO FILL THE PUMP
BODY WITH THE PUMP ENGINE RUNNING.) The
pump is now ready for operation. The liquid used to
Table 1-3. Pulvi-Mixer Reference Application Chart.
prime the pump should be as free of solids as possible.