LS600 PUMP — OPERATION

4.Let the pump cycle until the hydraulic oil temperature (Figure 29) is approximately 50° to 60° F.

HYDRAULIC OIL

TEMPERATURE

Figure 29. Hydraulic Oil Temperature Gauge

5.The Accumulator Pressure Gauge (Figure 30) should read approximately 1750 pounds per square inch (psi).

Figure 30. Accumulator

Pressure Gauge

6.Push the Hopper Remixer Control Lever DOWNWARD (Figure 31).The Hopper Remixer Control lever is located to the left of the Hydraulic Temperature gauge.Observe that the blades (Figure 32) inside the hopper are turning in a clockwise direction (FORWARD).To turn the blades in a counterclockwise direction (REVERSE), push the Hopper Remixer Control lever UPWARD (Figure 31).

Figure 32. Hopper Remixer Blades (Rotation)

7.Slide the Volume Control Switch (Figure 27) to the right to increase the volume to 25-30 strokes per minute. Slowly discharge the concrete from the ready-mix truck into the hopper and completely fill it. Keep the pump running continuously until concrete is discharging at the end of the delivery system. If the pump is stopped during this procedure, a blockage may occur.

CAUTION - HOSE/LINE BLOCKAGE

If hoses or lines are blocked for any reason, or if the lines are kinked when starting up or during the pumping cycle, the pump pressure could straighten out the kink or force out the blockage. This rapid surge of material could cause the lines to whip or move in a manner that could cause injury to personnel.

8.It is important that once the slurry procedure is completed, and concrete is flowing through the hose, DO NOT stop the pour until all the slurry is pumped out and the concrete has reached the end of the hose.The only time to stop the pump during the priming procedure is if a blockage occurs.

9.If it is necessary to replace or add a section of delivery system, after the initial lubrication procedure, wet the inside area of the hose, pipe or elbow with 5 gallons of water per 25 foot length, before adding it to the system.

When pumping long distance or pumping stiff mixes, you can expect a drop in volume compared to shorter lines and wetter mixes due to the change in valve efficiency or cavitation.

Figure 31. Hopper Remixer Control Lever

MAYCO LS600 PUMP — OPERATION AND PARTS MANUAL — REV. #4 (9/15/11) — PAGE 29

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Image 29
Multiquip LS600 manual Hydraulic Oil Temperature Gauge
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LS600 specifications

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