REED 00 C50SS, Manual, Page: 22 / 84

REED
00 MODEL:
C50SS
TRAILER CONCRETE PUMP
OPER.
PAGE 21
PRIMING THE PUMP SYSTEM
Before proceeding to cycle and pump concrete material it will be necessary to prime the
pump system and delivery lines. This operation consists of pumping a coating of
lubrication grout through the S-tube and delivery lines to enable the regular concrete mix
to flow smoothly.
The grout used for priming and lubrication should consist of two (2) parts sand and one (1)
part cement and mixed to a consistency of thick soup. This will coat the delivery line
ahead of the actual material mix and will assist in preventing the possibility of packing
when the line is filled with regular mix.
How much grout will be needed depends on the length of the delivery line as well as the
material being pumped. Experience will eventually indicate the amount to be required.
•
Using a water hose wet down the inside of the hopper with about one (1) gallon of
water.
•
When the concrete from the ready-mix truck is ready to be placed in the hopper, pour
the grout into hopper.
•
Adjust THROTTLE to FULL RPM
•
At pump panel adjust VOLUME control to about ½ open and turn PUMP ON .
•
As the slurry is being pumped out begin charging, pouring concrete from the truck into
the hopper.
•
Engage the AGITATOR using appropriate control.
•
Continue to pump until a steady flow is discharged from end of delivery line.
•
Once this point has been reached, the VOLUME control can be adjusted to the
desired concrete output.
•
During the pumping operation observe the 6000 PSI hydraulic gauge. Be alert to
unactuated sudden changes in pressure, high or low.
•
The S-TUBE gauge should read approximately 2000 PSI just prior to the shifting of
the S-tube. As shift is made gauge will quickly lose pressure then bounce back.
•
To check pumping pressure, actuate TEST switch to either CYL “A” or CYL “B”
position. Hold toggle until piston bottoms out. Read pressure on 6000 PSI gauge.
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