2
WARNING:
NEVER remove the plug or
substitute a conventional pipe plug from
the plunger travel restriction port.
WARNING: EXTREME CAUTION must
be exercised when using high oil flow
pumps with CLL and/or CLS cylinders.
Oil flow from pump into cylinder may be
higher than the oil flow capacity of the
plunger travel restriction port. Oil flow at the plunger
travel restriction port indicates that maximum plunger
travel has been reached. DO NOT exceed maximum
plunger extension with CLL and CLS cylinders.
WARNING: CLL and CLS cylinders
do
not
have a stopring.
Use these cylinders
only in vertical position with the plunger
pointing upwards.
WARNING: DO NOT EXCEED EQUIP-
MENT RATINGS.
Never attemp to lift a
load weighing more than the capacity of
the cylinder. Overloading causes equip-
ment failure and possible personal injury. These
cylinders are designed for a maximum pressure of
700 bar [10.000 psi]. Do not connect these cylinders
to a pump with a higher pressure rating.
IMPORTANT
: Use hydraulic gauges in
each hydraulic system to indicate safe
operating loads.
WARNING
: Make sure that all system
components are protected from external
sources of damage, such as excessive
heat, flame, moving machine parts, sharp
edges and corrosive chemicals.
WARNING
: Off-center loads produce
unnecessary strain on cylinders. Avoid
point loading. Distribute the load evenly
across the entire plunger surface.
CAUTION
: Avoid sharp bends and kinks
in hoses which will cause severe back-up
pressure. Also, bends and kinks lead to
premature hose failure damage.
WARNING: Stay clear of loads supported
by hydraulics.
After the load has been
raised or lowered, it must be blocked.
DANGER: Do not handle pressurized
hoses.
Escaping oil under pressure can
penetrate the skin, causing serious injury.
If oil is injected under the skin, see a
doctor immediately.
WARNING:
Never pressurize uncoupled
couplers. Only use hydraulic equipment
in a coupled system.
4.0 SIDELOAD
IMPORTANT:
Eliminate the presence of sideload
forces when using high tonnage cylinders. Sideload
can occur through:
1. An eccentric load on the plunger.
2. A horizontal load on a structure.
3. A structure and/or cylinder misalignment.
4. Non synchronized lifting actions.
5. Non stable cylinder base support.
Always use a flat, hard surface as a cylinder support
plate. Use a low friction material on top of the
saddle. To reduce cylinder offset loading, optional
CAT-swivel saddles are available. Always use grease
underneath swivel saddles (see illustration 2). The
maximum allowable sideload at full cylinder stroke is
5% of the cylinder’s rated capacity.
5.0 OPERATION
IMPORTANT:
It is mandatory that the
operator has a full understanding of all
instructions, safety regulations, cautions
and warnings, before starting to operate
any of this high force tool equipment. In case of
doubt, contact Enerpac.
5.1 Advancing and retracting the cylinder
For complete operating instructions refer to the
instruction sheet included with each pump.
Power pumps
Shift the valve on the pump to the advance position
and run the pump to advance the cylinder. To retract
the cylinder, shift the valve to the retract position.
CLL and CLS cylinders are load return. Considerable
load force is required to completely retract the
plunger. To retract the CLR-cylinder, shift the valve
to the retract position and run the pump.
illustration 2 - CAT-saddle
Grease this
surface
