Duff-Norton NZ-100 - Manual (Page 3)

1-4. Warranty and Warranty Repair
Subject to the conditions stated herein, Duff-
Norton will repair or replace, without charge, any
parts proven to Duff-Norton’s satisfaction to have
been defective in material or workmanship. Claims
must be made within one year after date of
shipment. Duff-Norton will not repair or replace any
parts that become inoperative because of improper
maintenance, eccentric loading, overloading,
chemical or abrasive action, excessive wear, or
other abuse.
Equipment and accessories not of Duff-Norton's
manufacture are warranted only to the extent that
they are warranted by the manufacturer, and only if
the claimed defect arose during normal use,
applications and service. Equipment which has
been altered or modified by anyone without Duff-
Norton's authorization is not warranted by Duff-
Norton. EXCEPT AS STATED HEREIN, DUFF-
NORTON MAKES NO OTHER WARRANTIES,
EXPRESS OR IMPLIED, INCLUDING WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE.
If you have any questions concerning warranty
repair, please contact Duff-Norton.
Authorization for return must be received from
Duff-Norton before returning any equipment for
inspection or warranty repair.
1-1. General
This manual contains installation and maintenance
instructions for Duff-Norton SCN Series
SuperCylinders. It may be supplemented by
individual instructions for the motor, brake, or gear
reducer used as part of the SuperCylinder. To
ensure satisfactory service, read and understand
the information in this and any accompanying
literature.
1-2. Applications
1-3. Important Precautions
In order to ensure that Duff-Norton acutators
provide good service over a period of years the
following precautions should be taken:
SECTION I
INTRODUCTION
3
(Industrial Use Only) The linear actuators
described and illustrated in this manual are
intended for industrial use only and should
not be used to lift, support or otherwise
transport people unless you have a written
statement from Duff-Norton which
authorizes the specific actuator unit, as
used in your application, as suitable for
moving people.
Do not use actuators with standard motors
in areas containing flammable vapors,
liquids, gases or combustible dusts or
fibers. Refer to Article 500 of The National
Electric Code. Do not use in highly
corrosive or wet environments. Do not use
in applications involving extended exposure
to temperatures below -20˚F or above
140˚F.
The actuator rod clevis must be restrained
from rotating. The amount of restraining
torque is a function of screw geometry and
load. Consult Duff-Norton for expected
values.
1.
2.
3.
jamming. In applications where
overloading is a possibility, appropriate
electronic or mechanical devices should
be incorporated to prevent operation of the
actuator if overloaded.
Do not install an electric motor on a
SuperCylinder with horsepower rating
greater than that shown in the
SuperCylinder catalog.
SuperCylinders are normally supplied
without controls. The installer must
provide adequate electrical controls that
provide motor thermal protection and
incorporate limit switches to ensure that
the actuator is not jammed against internal
or external stops.
SuperCylinders do not incorporate any
protection against mechanical overloading,
either externally applied or through internal
1.
3.
2.
Do not allow actuator to go
beyond specified (catalog) closed
height, or serious damage to
internal mechanism may result.
CAUTION