3
1-1. General Information
This manual provides information for the installation,
operation and repair of Duff-Norton electromechanical
actuators.
1-2. Application Information
The actuators described in this manual are intended for
industrial use only and should not be used to lift, sup-
port or otherwise transport people or loads over people,
unless you have obtained written authorization from
Duff-Norton that the actuator is suitable for the particular
application.
The actuator is designed for lifting or pushing loads no
more than its load rating, on an intermittent basis, not for
applications requiring continuous operation. The actua-
tor is designed for clevis mounting and cannot support
side loading of the translating tube.
1-3. Inspection
Every actuator is tested at the factory under full rated
load to ensure that the actuator operates properly and
that limit switches precisely stop its travel. Limit switch
settings must be rechecked at installation, since rotation
of the translating tube will change set points.
Inspect the actuator before installation for any evidence
of shipping damage or loose parts.
Section I
General Information
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 inopera-
tive because of improper maintenance, eccentric load-
ing, overloading, chemical or abrasive action, excessive
heat, or other abuse.
Equipment and accessories not of Duff-Norton’s manu-
facture are warranted only to the extent they are warrant-
ed by the manufacturer, and only if the claimed defect
arose during normal use, applications, and service.
Equipment which has been altered or modified by any-
one 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.
Authorization for return must be received from
Duff-Norton before returning any equipment for inspec-
tion or warranty repair.
Table 3-1. Dimensions in Inches
