Operating Instructions, Form No. 102904, Back sheet 2 of 4
OPERATION
PICTOGRAM DEFINITIONS
Activating the pump with the pedal end marked with this pictogram,
the flow of fluid is directed out of the reservoir.
Activating the pump with the pedal end marked with this pictogram,
the flow of fluid is directed back to the reservoir.
Pump Operation
For Hand/Foot Operated Pumps:
1. To extend the cylinder, depress the pedal on the end marked .
2. To hold the cylinder in position, release the end of foot pedal marked with to deactivate the pump.
3. To retract the cylinder, depress the pedal on the end marked .
For Push Button Pumps:
1. To extend the cylinder, depress the button on the remote hand control marked .
2. To hold the cylinder in position, release the button.
3. To retract the cylinder, depress the button on the remote hand control marked .
For Pumps With Air Regulators:
1. Open the air shut-off valve (if so equipped) or connect the air quick coupler (if so equipped).
NOTE: under certain circumstances the pump may need to be primed before operation. Refer to the
method described in the section entitled "Priming the Pump Unit."
2. Slowly turn the air regulator control on unit clockwise to increase pressure, counterclockwise to decrease pressure.
As air is admitted to the pump unit, it will begin to deliver fluid to the system. Continue to slowly turn the air
regulator control clockwise until gauge reads the maximum hydraulic pressure rating as stated on the pumps data
plate. A maximum hydraulic pressure reading should be obtained if air pressure is approximately 100 PSI (7 BAR).
3. Cycle the system several times by manually shifting or the push button (if so equipped). Set the air regulator to
obtain the desired hydraulic pressure. When decreasing pressure, shift the valve after each adjustment before
measuring actual hydraulic pressure.
4. Shut off and disconnect air supply to the pump and shift pump valve or push button (if so equipped) two times to
release all system pressure. Check fluid level with hydraulic system retracted. The pump is now ready for
operation.
NOTE:
•
The hydraulic pressure is increased or decreased by adjusting the air inlet pressure at the
regulator.
•
On two stage pumps, the air pressure regulator that is mounted on the pump controls only the output
from the high pressure stage. The output of the low pressure stage of the pump is determined by the air line
pressure coming from the remote regulator. A remote regulator is required to control the air pressure from the air
line. The independent functioning of the low and high pressure stages of this pump can best be described as
follows. At the minimum air line pressure of 40 PSI (3 BAR), the low pressure stage of the pump will deliver 480
PSI (33 BAR) hydraulic pressure (with the pump regulator turned counterclockwise to prevent air pressure from
activating the high pressure stage of the pump.) At the minimum air line pressure of 40 PSI (3 BAR) the high
pressure stage of the pump will deliver 4,000 PSI (275 BAR) hydraulic pressure (with the pump regulator turned
clockwise to allow air pressure to reach the high pressure stage.) Always remember that the pump regulator must
be turned fully counterclockwise when the pump is used to produce 1,200 PSI (83 BAR) or less.
