general information

Reverse Pumping Procedure

1.Switch the pump into reverse. With pump speed at a medium-slow (approx. 12 strokes per min.) try to pull the “pack” back into the hopper with 5 or 6 reverse strokes.

2.Remix the concrete in the hopper.

3.Switch the pump into forward. If it is still plugged, repeat “Reversing” procedure three times.

4.If concrete still does not move, proceed to the Shuttle Tube Inspection Procedure.

Shuttle Tube Inspection Procedure

DANGER

Accumulator Pressure

Make sure the accumulator pressure gauge reads ZERO psi. prior to performing any maintenance or inspection.You must follow lock out-tag out procedures. Improper accumulator pressure can result in an explosion causing serious injury or death.

1.Stop the pump. Turn off the engine.

2.The senior or most experienced operator must warn all others to stand at least 20 feet away from the machine and turn their heads to face away from the pump.

3.The operator will position himself beside the reducing elbow at the pump outlet. Wearing safety glasses, slip the end of a pry bar (24" length of reinforcing steel rod) under the latch of the hose clamp and flip it up.

4.Carefully knock the end of the hose away from the reducer.

5.Chip the concrete out of the reducer with the pry bar.

6.Remove the reducer. From the discharge end, chip the concrete out of the shuttle tube with the pry-bar. If concrete cannot be loosened from the outlet of the shuttle tube, remove the clean-out plug on the bottom of the hopper to discharge the concrete.

7.Chip the blockage out with the pry-bar.

8.Flush the shuttle tube with water.

9.Before resuming operation of the pump, perform the “Reverse” Pumping Procedure to relieve pressure on the shuttle tubes.

page 20 — MAYCO LS600P CONCRETE PUMP • operation manual — rev. #0 (05/13/13)

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Multiquip LS600P operation manual Reverse Pumping Procedure, Shuttle Tube Inspection Procedure, Accumulator Pressure

LS600P specifications

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