Enerpac LPL-Series, Инструкция

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5.0 LIFTING THE CYLINDER
All LPL-Series cylinders are equipped with two pre-installed lifting
eyes. Always use both lifting eyes when hoisting the cylinder.
Lifting straps or chains must be positioned at an angle where
they will not interfere with the cylinder base. Use of a spreader
bar is recommended. See Figure 3.
Figure 3, Lifting Arrangements (typical)
OK OK
6.0 SETUP
6.1 Hydraulic Pump Requirements
Hydraulic pumps are sold separately and are not included with
the cylinders.
A hand-operated hydraulic pump can be used to operate a
smaller LPL-Series cylinder. However, a large size cylinder (or
a series of coupled cylinders) will typically require the use of an
electric, air or gas powered hydraulic pump.
Whichever type of pump is used, be certain that the pump
reservoir is capable of holding a sufficient amount of hydraulic
oil to operate the cylinder (or set of cylinders) to full extension.
The pump must be equipped with a pressure release valve. If
greater control is required, a three way directional control valve
may be used instead. Both valve types can be either manual
or remote operated.
The pump must also be equipped with a separate safety
pressure relief valve that opens if the system working pressure
exceeds 10150 psi [700 bar]. Verify that the pump safety relief
valve is adjusted to the proper setting before using the pump
with the cylinder(s).
6.2 Hydraulic Oil Requirements
Use of Enerpac HF Series ISO 32 hydraulic oil is recommended.
Enerpac HF oil is available at your local Enerpac Distributor or
Authorized Service Center..
NOTICE
• Failure to use the correct oil type (high-quality ISO 32
hydraulic oil) may result in damage to cylinder hydraulic
components and will void the product warranty.
• Be sure that the oil is clean. The oil cleanliness should
be maintained to a maximum level of 18/16/13 per the
ISO 4406 standard. If the oil develops a milky, cloudy or
dark appearance, it should be changed immediately.
• To avoid overfilling and possible equipment damage, add
oil to the pump reservoir only after all cylinder plungers are
completely retracted and system pressure is released.
• When using a hand-operated pump to power the cylinder(s),
it is permissible to use a high-quality brand of ISO 15
hydraulic oil. The lower oil viscosity will result in reduced
pumping effort, especially in cold weather conditions.
6.3 Hydraulic Connections
All LPL-Series cylinders are equipped with one 3/8"-18 NPTF
female hydraulic coupler. Refer to Figure 2, item 6 for location.
This coupler provides hydraulic flow for both advance and
retract functions. It is compatible with all Enerpac HC Series
hydraulic hoses.
Be certain that all hose couplers are fully connected, so that
hydraulic flow is not blocked or restricted.
All hoses, fittings and other hydraulic components in the circuit
must be rated for at least 10150 psi [700 bar] operation.
6.4 Air Removal
Trapped air must be removed from the hydraulic cylinder and
hose before the system is placed into operation. If multiple
cylinders are to be used, it is recommended that air be
removed from each cylinder individually. Refer to the following
procedure:
1. Place the cylinder in the vertical position, on a flat surface.
Be sure that there is no load on the plunger.
2. Verify that the lock nut is positioned at the top of the
plunger. This will allow the plunger to be fully retracted
during the air removal process.
3. Position the hydraulic pump so it is located higher than the
cylinder.
WARNING SLOWLY advance the cylinder plunger
during the next step. The LPL-Series cylinder has NO stop
ring. The plunger may be hydraulically ejected from the
cylinder base if it is advanced too far. Serious personal
injury, high pressure oil leakage and property damage
could result.
4. Operate pump and valve to SLOWLY advance the plunger.
STOP advancing the plunger immediately when the red
maximum stroke indicator becomes visible.
5. Relieve hydraulic pressure. Then, manually retract the
plunger into the cylinder base until it is fully retracted. Use
of a hydraulic pump equipped with a vacuum valve will
help aid plunger retraction.
6. Repeat steps 4 and 5 until the plunger advances smoothly.
7. Be sure that the plunger is fully retracted. Then, check
the oil level in the pump hydraulic reservoir. If oil level has
dropped, add additional oil to the reservoir as required.
NOTICE
Refer to Section 6.2 of this document for hydraulic oil
requirements. Follow the pump manufacturer's instructions when
adding oil to the pump reservoir. To avoid overfilling, be certain
that the cylinder plunger is fully retracted before adding any oil.
8. Repeat steps 1 through 7 for all cylinders to be used in the
hydraulic circuit.
6.5 Cylinder Base Support
Be certain to provide adequate support for the cylinder base.
All LPL-Series cylinders require a flat and stable lifting surface
that is capable of supporting the load without settling. A one-
piece steel plate of appropriate size must be placed between
the cylinder base and the ground or other lifting surface. See
Figure 4.
CAUTION
Use of LPL-Series cylinders on unstable
surfaces such as sand, mud or dirt may result in loss of
load and/or damage to cylinder.
NOTICE Always use a one-piece steel plate under an LPL-
Series cylinder. To ensure proper support, be sure that the
plate extends under the entire surface of the cylinder base.
The cylinder base may become deformed and permanently
damaged if these instructions are not followed.