Enerpac WSL-442 - Manual (Page 4)

INSTALLATION
Hydraulic Connections
1. Locate the work supports at the lowest point of the fixture's hydraulic system
to aid in bleeding. Work supports must be purged of air by cycling several
times and allowing air in the system to vent at the highest point in the system.
2. Install the work supports by either threading into the fixture, using the
accessory jam nuts, or bolting the flange onto the fixture. Mount the work
support so that the plunger is at the approximate middle of its stroke when
contacting the workpiece in the fixture.
3. Hydraulic connections can be made at the side port or at the manifold port.
If making hydraulic connections at the manifold port, the port screw plug and
copper gasket must first be removed from the hydraulic manifold port (item
D). Lightly lubricate the provided O-ring (item C) and install it in the
counterbore around the port prior to mounting and bolting down the work
support (see figure 3). Be sure that the O-ring does not get pinched or
damaged during this mounting as leakage could result. To ensure that the
manifold mounting does not leak, provide a fixture mounting surface with a
flatness within .003 inch (0,08 mm) and a surface roughness average (R
a
) not
to exceed 32 µin. (0,8 µm).
WARNING
The fixture manifold must be capable of withstanding
hydraulic pressure of 5000 psi (350 bar).
4. The hydraulic power pump should not exceed 5000 psi (350 bar) maximum.
Power pumps must be large enough to provide a usable oil supply for the
work supports, hoses, clamps, and all items in the system. Refer to
specifications table for maximum applied loads vs. operating pressure.
Venting
1. If the breather fitting (item A) is subject to a coolant flood condition, the
breather fitting should be removed. Use tubing and a threaded connector to
vent to a clean, remote area of the fixture (see figure 2).
2. Venting can also be achieved using the optional manifold breather port (see
figure 3).
2a. Remove the screw plug and copper gasket from the manifold breather
port (item B).
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