Enerpac CLSG -Series - Manual (Page 2)

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CAUTION: Keep hydraulic equipment away from
flames and heat. Excessive heat will soften packings
and seals, resulting in fluid leaks. Heat also weakens
hose materials and packings. For optimum performance do
not expose equipment to temperatures
of 65°C [150°F] or higher. Protect hoses and cylinders from
weld spatter.
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: Only use hydraulic cylinders in a coupled
system. Never use a cylinder with unconnected
couplers. If the cylinder becomes extremely
overloaded, components can fail catastrophically causing
severe personal injury.
WARNING: BE SURE SETUP IS STABLE BEFORE
LIFTING LOAD. Cylinders should be placed on a flat
surface that can support the load. Where applicable,
use a cylinder base for added stability. Do not weld or
otherwise modify the cylinder to attach a base or other
support.
Avoid situations where loads are not directly centered
on the cylinder plunger. Off-center loads produce
considerable strain on cylinders and plungers. In
addition, the load may slip or fall, causing potentially
dangerous results.
Distribute the load evenly across the entire saddle
surface. Always use a saddle to protect the plunger.
IMPORTANT: Hydraulic equipment must only be
serviced by a qualified hydraulic technician. For repair
service, contact the Authorized ENERPAC Service
Center in your area. To protect your warranty, use only
ENERPAC oil.
WARNING: Immediately replace worn or damaged
parts by genuine ENERPAC parts. Standard grade
parts will break causing personal injury and property
damage. ENERPAC parts are designed to fit properly and
withstand high loads.
3.0 PRODUCT DESCRIPTION
3.1 CLSG cylinders
Single-acting, load return cylinders with an overflow oil port for
stroke restriction. The mounting holes drilled in the cylinder bottom
are metric.
3.2 CLRG cylinders
Double-acting, hydraulic return cylinders with a safety valve in the
retract side to prevent accidental overpressurization. The mounting
holes drilled in the cylinder bottom are metric.
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 CATG-swivel saddles are available. Always use
grease underneath swivel saddles (see illustration 1). The
maximum allowable sideload at full cylinder stroke is 5% of the
cylinder’s rated capacity.
Illustration 1 - CATG Saddle
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.
CLSG cylinders are load return. Considerable load force is
required to completely retract the plunger. To retract the CLRG-
cylinder, shift the valve to the retract position and run the pump.
5.2 Air removal
Advance and retract the cylinder several times avoiding pressure
build-up. Air removal is complete when the cylinder motion is
smooth.
®
Grease this
Surface