Adding Oil; Switch Positions - Enerpac WU Serie Hoja De Instrucciones

4.0 INSTALLATION
4.1 Hydraulic Connections
Use 1-1/2 wraps of Teflon tape
(or suitable thread sealant) on all
threads, leaving the first complete
thread free of tape (see Figure 2).
Trim loose ends.
IMPORTANT: Use care to prevent
pieces of tape from entering the
hydraulic system.
The pump-to-cylinder hose attaches directly to the outlet port of
the control valve (see Figure 3).
Outlet Port
SAE #4
(to cylinders)
Figure 3, Control Valve Outlet Port
WARNING: To ensure proper operation, avoid kinking or
tightly bending hoses. If a hose becomes kinked or
otherwise damaged, it must be replaced. Damaged
hoses may rupture at high pressure, causing personal injury.

4.2 Adding Oil

Check the oil level by unscrewing and removing the vent/fill cap
(see Figure 4). Add Enerpac hydraulic oil until the oil level is 1/2
inch [1 cm] below the vent/fill cap opening.
IMPORTANT: Add oil only when all system components are fully
retracted, (fully extended for pull type cylinders and devices) or the
system will contain more oil than the reservoir can hold.
Figure 4, Vent/Fill Cap
Figure 2, Thread Sealant
ON
OFF
Vent/Fill
Cap
5.0 OPERATION
Note: To avoid power losses between the electrical outlet and
pump motor, use the shortest possible extension cord. The pump
motor will function at low voltage, but motor speed and oil flow
will be reduced.
Before operating the pump:
1. Check all system fittings and connections to be sure they are
tight and leak free.
2. Check the oil level and add oil, if necessary. Refer to Section
4.2.
3. Open the pump vent/fill cap located on the front right
corner of the reservoir by turning it 1 or 2 complete turns
(see Figure 4).
CAUTION: The vent/fill cap must be open whenever the
pump is running.
4. Before connecting electrical power to the pump, be sure that
the power supply is correct. Refer to Section 3.0 for power
requirements. Also refer to pump data plate.
5. Set the pump relief valve and pressure switch to the desired
pressures. Refer to sections 7.0 and 8.0 for instructions.
5.1 Air Removal
When the hydraulic system is connected for the first time, air will
be trapped in the components. To ensure smooth, safe operation,
remove the air by running the system through several complete
cycles without a load on the cylinders. When cylinders advance
and retract without hesitation, the air is vented from the system.
5.2 Pump Shroud Switch
The pump shroud switch is located on the side of the pump
shroud. Models WUD-1100B/E and WUD-1101B/E have a three-
position switch. Models WUD-1300B/E and WUD-1301B/E have
a two-position switch (see Figure 5).

Switch Positions:

ON - Pump motor
controlled by pendant
button(s).
OFF - Pendant button(s)
deactivated. Pump motor off.
MOMENTARY MOTOR ON
(MOM) - Pump motor on
when switch is depressed.
Pump motor off when switch
is released (WUD-1100B/E
and WUD-1101B/E only).
For all WUD pump models, pressing the top "ON" portion of the
switch activates the pump's electrical control circuit, but does
not start the pump motor. When the switch is in this position,
the pump can be operated using the pendant button(s). Refer to
Section 5.3 for pendant details.
Pressing the "OFF" portion of the switch deactivates the pendant
button(s).
On Models WUD-1100B/E and WUD-1101B/E only, pressing
and holding the bottom "MOM" portion of the switch starts the
pump motor. Releasing the switch stops the motor and releases
clamping pressure. If desired, the "MOM" portion of the switch
can be used as an alternative to the pendant clamp button.
3
ON
OFF
MOM
WUD-1100B/E,
WUD-1101B/E ON
OFF
WUD-1300B/E,
WUD-1301B/E
Figure 5, Pump Shroud Switch