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2. industrial use only, 3. factory preparation, 4. friction disc clutch – Duff-Norton SK6405-100 User Manual

Page 3: 5. warranty and warranty repair

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3405 Series

6405 Series

Applied

Applied

Optional

Optional

Load

Load

High Speed

High Speed

(lbs.)

(lbs.)

Motor

Motor

100

100

42

80

2.40

4.50

200

200

41

75

2.45

4.60

250

300

39

73

2.50

4.65

N/A

400

37

70

2.55

4.70

N/A

500

35

68

2.60

4.80

Amps

Standard

Motor

Standard

Motor

Speed

(in/min)

3405 Series

6405 Series

Applied

Applied

Standard

Optional

Optional

Load

Load

Motor

High Speed

High Speed

(lbs.)

(lbs.)

(MPD-6405)

Motor

Motor

(HMPD-6405)

100

100

68

145

6

21

200

200

60

132

10

28

250

300

52

120

13

36

N/A

400

42

17

N/A

500

32

22

Motor

Speed

Amps

(in/min)

Standard

3405 Series

6405 Series

Applied

Applied

Standard

High Speed

Load

Load

28-33 mfd

64-77 mfd

High Speed

(lbs.)

(lbs.)

Capacitor

Capacitor

DC Motor

100

100

600

490

2800

1350

200

200

575

485

1750

1000

250

300

550

470

1050

700

N/A

400

525

465

650

N/A

500

500

450

350

DC Motor

AC Motor

Standard

# Duty Cycle (inches per hour)

DC Motor

NOTE: Some actuator external surface
temperatures may reach 230˚ during
use at or near maximum duty cycle.
All ratings are nominal and are based
on actuator being broken-in for
approximately 2500 inches of travel.

WITH 115 V. 60 HZ AC MOTOR

WITH 12 V. DC MOTOR

DUTY CYCLE CHART

1-1. General

This page provides instructions for operation and mainte-

nance of Duff-Norton® 3405 and 6405 Series electro-

mechanical actuators. To ensure efficient, long and satis-

factory use of this unit, read and understand the informa-

tion herein, and follow the instructions closely.

1-2. Industrial Use Only

The 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 author-

izes the specific actuator unit, as used in your applica-

tion, as suitable for moving people.

1-3. Factory Preparation

Each actuator is carefully assembled and tested at the

factory to ensure that the electrical and mechanical com-

ponents will function properly and that the actuator will

lift its rated load. The motor current draw is checked to

make certain that it is within Duff-Norton standards.

Every effort has been made to deliver this unit to

you in its factory approved state. You should, however,

carefully inspect the actuator for damage that may have

occurred during transit.

1-4. Friction Disc Clutch

The friction disc clutch is set so that the actuator will lift

its rated load, or a lighter load if so specified, but will slip

should the actuator be run into a jamming position at the

end of its travel. Thus, under overloads, or jamming con-

ditions, the clutch will slip while the motor continues to

run. If necessary, the clutch can be set to slip at a lighter

load by connecting an ammeter in the line at the motor,

loading the actuator, and, while operating, loosening the

clutch hex nut slightly until ammeter reads the required

current draw. (See table below.) Clutch is not effective

at loads of 50 pounds or less.

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 and 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 heat,

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 war-

ranted by Duff-Norton. EXCEPT AS STATED HEREIN,

DUFF-NORTON MAKES NO OTHER WARRANTIES,

EXPRESS OR IMPLIED, INCLUDING WARRANTIES OR

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 inspec-

tion or warranty repair.

2-1.

To install the actuator, simply support and secure it

# Total inches travel (up and down) per hour with equally timed intervals
between cycles.

6405-100 10/10/06 11:50 AM Page 3