MAYCO LS450 CONCRETE PUMP • OPERATION MANUAL — REV. #2 (02/23/21) — PAGE 27
COMPONENTS (DIGITAL CONTROL PANEL)
Figure 7 illustrates the digital control panel components.
A brief description of each component is described below.
1. Emergency Stop Button — Press the emergency
stop button to stop the pump in an emergency. Turn the
knob counterclockwise to disengage the stop button.
2. Ignition Switch — Insert the ignition key here to start
the engine. Turn the key clockwise to the ON position,
then continue turning clockwise to the START position
and release. To stop the engine turn the key fully
counterclockwise to the STOP position.
3. Pumping Control Switch — This 3-position switch
controls the pumping of the pump. The rightmost
position (REMOTE) is for use with the remote control
unit, the leftmost position (LOCAL) is for normal
pumping operation, and the centermost position
(CENTER OFF) prevents pumping.
4. Remote Cable Receptacle — Insert the remote
control cable into this receptacle.
5. Manual Cylinder Jogging Switch — This
2-position switch allows the operator to manually
jog the cylinders to assist in clearing material
line packs and is used to test pumping pressure.
See Pressure Test in the Maintenance
section of this manual for the testing procedure.
The leftmost position jogs cylinder ‘A’ and the rightmost
position jogs cylinder ‘B.’
6. Cylinder Stroke Control Switch — This 2-position switch
controls the pumping function. The leftmost position
(AUTOMATIC) sets the pump to automatic cycling. Set
the switch to this position for normal pump operation.
The rightmost position (JOG) changes the pump from
automatic to manual cycling. This allows the cylinders
to be manually cycled using the manual cylinder
jogging switch.
7. Vibrator Cable Receptacle (Option) — Insert the
vibrator cable into this receptacle.
8. Direction Control Switch —This 2-position switch
controls the direction of flow for any mix in the pump.
The leftmost position sets the pumping direction to
forward and the rightmost position sets the pumping
direction to reverse.
9. Stroke Volume Control Switch — Increases or
decreases the number of pump strokes per minute.
10. Scroll Switch — Allows the operator to scroll the
various readout screens.
11. Reset Switch — Allows the operator to reset the
stroke counter.
12. Digital Readout Screen — Displays and monitors the
various functions of the machine.
13. Accumulator Pressure Gauge — This gauge
monitors the internal pressure of the accumulator tank.
Normal internal pressure should read approximately
1,750 psi during pumping.
14. Main Pressure Gauge — This gauge monitors
the system pressure while pumping material. The
maximum pressure rating is 4,100 ~ 4,200 psi.
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