Duff-Norton SK-9800-100 - Manual (Page 3)

3
Section I
General Introduction
1-1. General
This manual contains installation and maintenance in-
structions for Duff-Norton 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 accompanyng literature.
1-2. Applications
1. Industrial Use Only The linear actuators de-
scribed 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.
2. Do not use actuators with standard motors in ar-
eas 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 tem-
peratures below -20
°
F or above 140
°
F.
3. 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.
1-3. Specifications
Table 1-1 gives lifting capacity, speed, and horsepower
for standard models of SuperCylinders. Other configu-
rations are possible and will be labeled with rated
capacity and electrical data.
If you need additional help, please contact Duff-Norton
at (800) 477-5002.
1-4. Important Precautions
In order to ensure that Duff-Norton acutators provide
good service over a period of years the following pre-
cautions should be taken:
1. SuperCylinders are normally supplied without con-
trols. The installer must provide adequate electrical
controls that provide motor thermal protection and
incorporate limit switches to ensure that the ac-
tuator is not jammed against internal or external
stops.
2. SuperCylinders do not incorporate any protection
against mechanical overloading, either externally
applied or through internal jamming. In applica-
tions where overloading is a possibility, appropriate
electronic or mechanical devices should be incor-
porated to prevent operation of the actuator if
overloaded.
3. Do not install an electric motor on a SuperCylinder
with horsepower rating greater than that shown in
Table 1.
1-5. 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 af-
ter 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 manu-
facture 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 MER-
CHANTABILITY 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 equip-
ment for inspection or warranty repair.
CAUTION
Do not allow actuator travel to go
beyond specified (catalog) closed
height, or serious damage to internal
mechanism may result.