Enerpac Products UNI-LIFT M - Manual

POWERFUL SOLUTIONS. GLOBAL FORCE.
Instruction Sheet
Uni-Lift ® Mechanical Actuators
M and B Series Models
1.0 GENERAL SAFETY INFORMATION
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.
Failure to comply with the following precautionary statements
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: Read and understand the entire contents
of this manual before beginning installation or operation
of Uni-Lift
® actuators and related equipment. Follow all
instructions and observe all safety precautions. Failure to
properly install or operate Uni-Lift
® actuators could result in
serious personal injury or damage to equipment and/or
property.
2.0 ACTUATOR SAFETY PRECAUTIONS
• Install the actuator and all related equipment in accordance
with the engineering guidelines and recommendations contained
in the Enerpac Uni-Lift
® Catalog #E500 (available from your
Enerpac distributor).
• Do not exceed the actuator ratings, including design load,
travel, and input speed.
• Comply with and adhere to all applicable safety codes for
your area, such as: building codes, elevator codes, AISC Steel
Construction specifi cations, and applicable regulations and
standards (including OSHA Title 29, Chapter 1910-219 and ANSI
B15.1). Note: applicable safety codes, regulations and standards
will vary depending on country and local requirements.
• Follow standard machinery installation practices. Properly
install, align and shield all moving parts.
• Inspect, lubricate and maintain the actuator as described in
this instruction sheet. Use the actuator only for its intended
purpose.
IMPORTANT: Use of Uni-Lift ® products to support or move
human cargo is not recommended. Contact Enerpac before
attempting to design a Uni-Lift
® system for this application.
WARNING: Always lockout power before performing
any inspection, maintenance, lubrication, adjustment
or repair procedures on the actuator or any associated
power transmission equipment. Be absolutely certain that the
electric motor (or other prime mover) cannot be remotely or
automatically started. Make sure the load is properly supported
before the actuator brake or other holding devices are removed.
3.0 ACTUATOR MODELS
Enerpac Uni-Lift ® actuators are available in two versions,
machine screw (M-Series) and ball screw (B-Series).
The M-Series actuator uses a precision rolled Acme threaded
screw that is self locking. In most applications, it will hold its
position without a brake. This type of actuator is best suited
for high load at slower speeds, applications with less frequent
cycling and if the load must be held in position when the system
is at rest.
The B-Series actuator uses ball screws to convert rotary motion
to linear movement. It requires about one-third the horsepower
of a comparable machine screw actuator. This type of actuator is
best suited when smooth, fast operation is required, and if high
cycle operation is anticipated. However, due to the effi ciency of
the ball screw, a mechanical brake must be used to stop the load
screw and to hold it in position.
IMPORTANT: Brakes are recommended for use on ANY Uni-
Lift
® actuator (including M-Series models) if vibration is present.
Note: The information contained in this manual is intended for
general reference only. Appearance, features and specifi cations
will vary due to design variables, custom engineering and
optional equipment. Refer to the charts in sections 12.0 through
15.0 for an overview of available Uni-Lift
® models, features and
optional accessories.
L2943 Rev. A 11/09
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