Enerpac VM2 User manual

1
Instruction Sheet
Repair Parts Sheets for this product are available from
the Enerpac web site at www.enerpac.com, or from
your nearest Authorized Enerpac Service Center or
Enerpac Sales office.
1.0 IMPORTANT RECEIVING
INSTRUCTIONS
Visually inspect all components for shipping damage.
Shipping damage is not covered by warranty. If
shipping damage is found, notify carrier at once. The
carrier is responsible for all repair and replacement
costs resulting from damage in shipment.
SAFETY FIRST
2.0 SAFETY ISSUES
Read all instructions, warnings and
cautions carefully. Follow all safety
precautions to avoid personal injury or
property damage during system operation. Enerpac
cannot be responsible for damage or injury resulting
from unsafe product use, lack of maintenance or
incorrect product and/or system operation. Contact
Enerpac when in doubt as to the safety precautions
and operations. If you have never been trained on
high-pressure hydraulic safety, consult your distribution
or service center for a free Enerpac Hydraulic safety
course.
Failure to comply with the following cautions and
warnings could cause equipment damage and
personal injury.
A CAUTION is used to indicate correct operating or
maintenance procedures and practices to prevent
damage to, or destruction of equipment or other
property.
A WARNING indicates a potential danger that requires
correct procedures or practices to avoid personal
injury.
A DANGER is only used when your action or lack of
action may cause serious injury or even death.
WARNING: Wear proper personal
protective gear when operating hydraulic
equipment.
WARNING: Stay clear of loads supported
by hydraulics. A cylinder, when used as a
load lifting device, should never be used
as a load holding device. After the load
has been raised or lowered, it must always be blocked
mechanically.
WARNING: USE ONLY RIGID PIECES
TO HOLD LOADS. Carefully select steel
or wood blocks that are capable of
supporting the load. Never use a hydraulic cylinder as
a shim or spacer in any lifting or pressing application.
DANGER: To avoid personal injury
keep hands and feet away from
cylinder and workpiece during
operation.
WARNING: Do not exceed equipment
ratings. Never attempt to lift a load
weighing more than the capacity of the
cylinder. Overloading causes equipment failure and
possible personal injury. The cylinders are designed
for a max. pressure of 700 bar [10,000 psi]. Do not
connect a jack or cylinder to a pump with a higher
pressure rating.
Never set the relief valve to a higher
pressure than the maximum rated pressure
of the pump. Higher settings may result in
equipment damage and/or personal injury.
WARNING: The system operating pressure
must not exceed the pressure rating of the
lowest rated component in the system.
Install pressure gauges in the system to
monitor operating pressure. It is your window to what
is happening in the system.
CAUTION: Avoid damaging hydraulic
hose. Avoid sharp bends and kinks when
routing hydraulic hoses. Using a bent or
kinked hose will cause severe back-pressure. Sharp
bends and kinks will internally damage the hose
leading to premature hose failure.
Do not drop heavy objects on hose.
A sharp impact may cause internal
damage to hose wire strands. Applying
pressure to a damaged hose may
cause it to rupture.
IMPORTANT: Do not lift hydraulic
equipment by the hoses or swivel
couplers. Use the carrying handle or other
means of safe transport.
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
Index:
English. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Français. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Deutsch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-11
Italiano. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-15
Español . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-19
Nederlands . . . . . . . . . . . . . . . . . . . . . . . . . . 20-23
Portuguese . . . . . . . . . . . . . . . . . . . . . . . . . . 24-27
Finnish . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28-31
Norwegian . . . . . . . . . . . . . . . . . . . . . . . . . . . 32-34
Swedish. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35-37
中文 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38-40
日本語 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41-43
VM2, VM22, VM32 Manually Operated
Control Valves
L2615 Rev. C 08/07

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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 HYDRAULIC CONNECTIONS
3.1 Check All Coupler Connections
1. Use Enerpac hi-flow couplers for best results,
or Enerpac regular couplers when very low flow
pumps are used. (Maximum flow below 1 GPM
— 230 cu. in./min.)
2. Connect hoses to valve at designated port
locations. If using pipe sealants on male pipe
threads, use sparingly and never over ends of
fittings where it can be torn loose and get into
system.
4.0 OPERATION
1. Connect and secure hoses and cylinders noting
that the proper ports are connected.
2. Quick disconnects must be fully engaged and
locking collars drawn up fully to ensure free flow
of oil between valve and attached component.
3. Before starting pump rotate valve handle counter-
clockwise (CCW), viewed from the top, to open
the valve to tank line. Pump can now be run but
pressure will not build.
4. To build pressure, rotate the handle clockwise
(CW) until the handle stops closing the valve.
Pump can now build pressure. Rotation (CCW
)will release the pressure and/or load and the
decent is controlled by the amount of rotation.
NOTE: The VM22 and VM32 Enerpac valves are
equipped with an integral user adjustable relief
valve. This relief valve is factory set to 10,000
psi [700 bar]. The valve can be adjusted by first
loosening the jam nut and either rotating the
setscrew clockwise to increase system pressure
or counter-clockwise to reduce system pressure.
Set screw must be locked in place with the jam
nut when adjustments are done.
5.0 TROUBLE SHOOTING
1. System will not build pressure. Check relief valve in
the control valve or in the pump, for proper setting
(see pump repair sheet or valve repair sheet).
Check and secure all hose connections. If trouble
is not corrected, remove cylinder and hoses from
the valve. Now place a pressure gauge in port A
and close (CW) the valve. If pressure cannot be
developed, the unit should be taken to the nearest
authorized ENERPAC Service Center. If pressure
develops, the cylinder, hoses or couplers are the
problem.
2. The cylinder will not build pressure. This is an
indication of a worn valve seat which must be
replaced by a Service Center.
3. VM22 has a check valve in-line with the pressure
port. This check will hold the pressure at port A
after the pump is turned off. When the pump is
functioning properly, the valve closed, you can jog
the pump and hold the pressure at port A.
6.0 MAINTENANCE
1. Periodically check all hydraulic connections to be
sure they are tight. Loose or leaking connections
may cause erratic and/or total loss of operation.
Replace or repair all defective parts promptly.
2. Periodically check the hydraulic oil level in your
system.
3. Change hydraulic oil approximately every 250-300
hours of operation. In dusty or dirty areas, it may
be necessary to change the oil more frequently.
7.0 STORAGE INSTRUCTIONS
In the event that the unit would be stored for any great
length of time (30 days or more), prepare as follows:
1. Wipe the entire unit clean.
2. Disconnect all hydraulic lines to prevent accidental
operation.
3. Cover the unit with some type of protective
cover.
4. Store in a clean, dry environment that is NOT
exposed to extreme temperatures.

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GP
PT
A
GP
GP
GP
A
T
P
GP
A
T
P
User adjustable
relief valve
.375-18 NPTF
“A” port
.250-18 NPTF
gauge port
Optional:
.375-18 NPTF
tank port
Figure 1, VM32, Pump Mounted
Figure 2, VM22, Pump Mounted
Figure 3, VM2, Pump Mounted
.375-18 NPTF “A” port
.250-18 NPTF
gauge port User adjustable
relief valve
Optional: .375-18 NPTF tank port
(max. 500 psi)
.375-18 NPTF “A” port Optional: .375-18 NPTF tank port
(max. 500 psi)