Enerpac ZE2 Series, Operation And Maintenance Manual, Page: 15 / 24

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7.3 Motor Power Switch
Many pump models are equipped with a pump-mounted
motor power switch. This can be either a rotary or rocker
type switch depending on pump model and configuration.
NOTICE
If your pump does not contain a pump mounted
motor power switch, then motor operation is controlled
only by the remote pendant.
7.3.1 Rotary Switch (on-off)
See Figure 5
for switch positions.
On models with a rotary switch, turn the knob clockwise
to the ON position to start the motor. Turn the knob
counter-clockwise to the OFF position to stop the motor.
OFF
ON
Figure 5: Rotary Switch
7.3.2 Rocker Switch (on-off-reset)
See Figure 6 for switch positions.
• Press the top ON section of the switch to start the
motor.
• Press the center OFF section of the switch to
stop the motor.
• In the event that a power interruption has occurred,
press and release the bottom RESET section of
the switch to reset the pump’s electrical circuits.
OFF
RESET
ON
Figure 6: Rocker Switch
When the pump is first connected to electrical power,
or if the electrical power has been interrupted and
reconnected, it will first be necessary to press the reset
section of the switch before operating the pump.
On models equipped with the optional pressure switch
the motor will not start unless the system hydraulic
pressure has dropped below the pressure setting of the
switch. Refer to instructions in Section 7.6 for additional
information.
WARNING
All users must be aware that pumps
equipped with the pressure switch option may start and
stop at any time when the rocker switch is in the ON
position. Refer to Section 7.6 for additional information.
7.4 Manual Control Valve Operation
WARNING
An unexpected component failure or
accidental activation of controls can allow a hydraulically
supported load to drop without warning. To prevent
serious personal injury, always support the load with
stands, blocking or other suitable mechanical supports
before placing hands, feet or other parts of your body
under the load.
7.4.1 VM22 and VM32 Control Valves
See Figure 7 for lever positions.
1. Advance 2. Retract
1
2
Figure 7: Lever Positions, VM22 & VM33
• Turn motor on or off using switch on pump.
• Jogging the valve lever from advance to retract
position with the motor off will relieve hydraulic
pressure.