Maintenance - Enerpac SFP Serie Manuel D'utilisation

5. Start/Stop Motor Pushbutton
6. Decompress Pushbutton
7. Pendant Control Connector
8. Power supply connector
5.4 Turning the powerpack on
5.4.1 Pumps with manual valves
Turn the motor on using the following steps:
1. Turn the main switch (Nr 1) to the "On" position
located on the electrical cabinet, ensure the Power On
LED (Nr 2) activates
2. Press the motor start button (Nr 5) for 3 seconds.
After the electric motor starts use the manual valves to
move the cylinders as explained in the paragraph 5.1.
5.4.2 Pumps with solenoid valves
Turn the motor on using the following steps:
1. Turn the main switch (Nr 1) to the "On" position
located on the electrical cabinet, ensure the Power On
LED (Nr 2) activates.
2. Deactivate the emergency stop button (Nr 7 on the
pendant).
3. Press the reset button to reset the security system
after the emergency button has been de-activated (Nr
4)
4. Press the motor start button for 3 seconds (Nr 5)
After the electric motor starts, use the pendant to move
the cylinders as explained in paragraph 5.2.
5.5 Setting the pressure relief valves
The powerpack has been designed to set the
relief valves up by the operator. The maximum
pressure of the relief valve is between 10 and
700 bar (145psi and 10,000psi). For this
purpose the operator needs the following
tools:
1. Plain slot screwdriver (1 unit)
2. Spanner of 13 mm (1 unit)
3. Manometer 0-1000 bar (for pressures up to 700 bar)
(4 units).
Manometers must be connected to the MP port (1/4"
NPT), in order to read the pressure in each line.
To set the relief valve up, follow the next steps:
1. Connect the output to one cylinder
2. Loosen the hexagonal nut of the relief valve.
3. Turn the bolt with the screwdriver fully (counter
clockwise) for a start reference point.
4. Turn the bolt a quarter turn (clockwise) in order to
open the relief valve.
5. Press the motor start button for 3 seconds (Nr 3)
6. Extend the cylinder plunger to its full stroke. (When
the plunger reaches the end of its stroke the pressure
will build. Note in the manometer the maximum
pressure reached).
7. Turn the bolt with the screw driver to adjust the
desired pressure (counter clockwise to decrease the
pressure, or clockwise to increase the pressure).
8. Tighten the nut with the spanner to lock the relief
valve bolt.
5.6 Decompressing
hydraulic pressure)
With the motor switched off:
1. Using the pendant
decompress.
2. Push decompress button on the electric cabinet (Nr
6)
3. Push at the same time the pendant retract or
advance button (Nr 5 or 6).
The solenoid valve will direct flow to tank relieving the
pressurized line.
5.7 Controlling the hydraulic flow of line A
The powerpack has a flow control valve installed on
line A. By regulating this valve, the operator can control
the speed of the cylinder when the flow is returning to
tank in lowering operation.
5.8 Reading the pressure on the output A
The powerpack is supplied with a manometer
indicating the pressure in the port A.

6.0 MAINTENANCE

6.1 Check Oil Level
Check the oil level of the pump prior to start-up. If
necessary, add oil by removing the fill port cap.
NOTE: Always be sure cylinders are fully retracted
before adding fluid to the reservoir.
6.2 Change Oil and Clean Reservoir
Enerpac HF oil is a crisp blue color. Frequently check
oil condition for contamination by comparing pump oil
to new Enerpac oil. As a general rule, completely drain
and clean the reservoir every 250 hours, or more
frequently if used in dirty environments.
NOTE: This procedure requires that you remove the
pump from the reservoir. Work on a clean bench and
dispose of used oil according to local codes.
5
system (Relieving
select the cylinders to