Enerpac VM43 - Manual (Page 2)

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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 fl at 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 qualifi ed 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 fi t properly and
withstand high loads.
3.0 GENERAL INFORMATION
The Enerpac valve design incorporates the following
features into a single unit:
• 10,000 psi [700 bar] operating pressure
• Load holding
• Electrical Fail-safe control
• Manual override, (requires pump to run)
• The Enerpac valves are specifi cally designed for
use with Enerpac electric powered pumps and
electric controls
• User adjustable relief valve
• Gauge ports
3.1 Capacity
Capacity is 900 cu. in/min (14.8 l/min) [3.9 gpm].
4.0 INSTALLATION
1. Install valve onto Enerpac pump using gasket
and fasteners included. Take needed steps to
ensure pump's pressure tube o-ring and backup
are not damaged.
2. Connect two (2) solenoid cords from electrical
box to valve. (NOTE: VE33-115 and VE43-115
plug into grounded 115 volt power supply.)
CAUTION: If you are not trained and
familiar with installing a valve have an
Authorized Enerpac Service Center
perform this step.
3. Connect and secure hoses and cylinder.
CAUTION: If using pipe sealants on make
pipe thread, use sparingly and never over
ends of fi ttings where it can be torn loose
and get into the hydraulic system.
4. Connect control station.
5. Install pressure gauge, if required, into proper
port. Pressure can be monitored at the “GP”
ports, the “GB” port or the “GA” port or any
combination of these, depending on system
requirements.
6. Connect motor to specifi ed electrical outlet.
7. Start pump motor. The valve is now automatically
in the NEUTRAL/HOLD position.
5.0 OPERATION
1. To advance load, depress the “up” arrow button
on control station.
2. To hold load remove fi nger from control
stations.
3. To retract load, depress the “down” arrow
button on control stations. (NOTE: motor must
be running.)
5.1 Relief Valve Adjustment
Z-Class pumps are equipped with one user adjustable
relief valve (see Figure 1.) It can be adjusted as
follows:
Figure 1
Relief valve body (DO NOT
TURN relief valve body.)
Locknut
Set Screw
1. Install a gauge on the pump. If a unit is equipped
with optional pressure transducer, verify “SET
PRES” value is higher than desired relief valve
setting or Auto Mode is off.
2. Start the pump to allow the oil to warm.
3. Loosen the set screw locking nut.