Owner's manual

ManualsBrandsDuff-Norton ManualsHardwareSK6905-200

CAUTION

This manual contains important information for the correct installation, operation and maintenance of the

equipment described herein. All persons involved in such installation, operation, and maintenance should be

thoroughly familiar with the contents. To safeguard against the possibility of personal injury or property

damage, follow the recommendations and instructions of this manual and keep it for further reference.

WARNING

Improper use can result in personal injury. To avoid injury:

• Do not use actuators to lift, support, or transport people or

loads over people without written approval from Duff-Norton.

• Read all product warnings and operating instructions.

Summary of content (16 pages)

PAGE 1
CAUTION This manual contains important information for the correct installation, operation and maintenance of the equipment described herein. All persons involved in such installation, operation, and maintenance should be thoroughly familiar with the contents. To safeguard against the possibility of personal injury or property damage, follow the recommendations and instructions of this manual and keep it for further reference. WARNING Improper use can result in personal injury.
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Contents Section I 1-1. 1-2. 1-3. 1-4. Figure 1-5. Section II 2-1. 2-2. 2-3. Section III 3-1. 3-2. 3-3. Section IV 4-1. 4-2. 4-3. 4-4. 4-5. Figure. 4-2 Figure 5-1. Section V 5-1. Section VI 6-1. Figure 6-1. 6-2. Figure 6-2. 2 General Information .................................................................................................... 3 General ....................................................................................................................... 3 Industrial Use Only ...........
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Section I General Information 1-1. General 1-4. Warranty and Warranty Repair This manual provides instructions for the installation, operation and maintenance of the Duff-Norton 3905, 3904, 6905 & 6904 Series DC electromechanical actuator. It includes proper procedures for the disassembly, cleaning, inspection, rebuilding and assembly of the actuator. To ensure efficient, long, satisfactory use of this unit, these instructions should be followed closely.
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30 Current Draw (amperes) 25 20 15 10 5 0 50 (23) 100 (45) 150 (68) 200 (90) 250 (113) Load lbs (kg) Duty Cycle* in/hr (m/hr) 3000 (76.2) 2500 (63.5) 2000 (50.8) 1500 (38.1) 1000 (25.4) 25 2500 (63) 20 2000 (50) 0 50 (23) 100 (45) 150 (68) 200 (90) 250 (113) Duty Cycle* in/hr (m/hr) 15 10 170 (4.3) 0 200 (90) 300 (135) 400 (180) 500 (225) Load lbs (kg) 100 (45) 200 (90) 300 (135) 400 (180) Load lbs (kg) 65 (1.7) 55 (1.4) 24 VDC (6904) 112 1 45 (1.2) 35 (0.
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Section II Installation 2-1. Installation Procedures Use Figure 6.1 on page 13 as a guide to properly attach the 3905, 3904, 6905 & 6904 DC actuator to your power source. Duff-Norton’s PDC series control box or 2 SPDT relays must be used to avoid burning up the llimit switches. 2-2.
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. With this set-up, potentiometer will have increasing resistance from S to CCW (and deccreasing resistance from S to CW) as the actuator extends. 2-4. Digital Position Indicator (Duff Norton part no. SK6300-4K) The model SK6300-4K is a highly versatile,, panel mount, digital readout device that provides a very precise indication of actuator position. It can be programmed to display percentage, inches, or any other desired unit.
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NOTE Disassembly should be accomplished on a clean cloth. 1. Clamp actuator housing (22) in vise (use soft jaws). Unit should be in horizontal position with switch cover (2) up. lating tube (50) wall. Do not drive pins against OD of screw (46). Remove nut (48) with screw (46) from translating tube (50). 2. Remove screws (1) from cover (2) housing (22), limit switch box and remove switch cover (2) and gasket (3). 16. Remove screw (46) from nut (48). 3.
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equivalent) to OD of bushing (34) and install in housing (22). Assemble into housing (22) end opposite side of housing with 4 holes for mounting motor adapter (29). 4. Press bushing (33) in housing (22) clevis. NOTE Rotate gear cam shaft to make sure that switch gear cam is properly located and activates switch. 5. Press bushing (36) in housing (22). 12. Thread set screw (12) in switch cam (11). Tighten lightly against shaft to prevent movement. 6.
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(41) into housing (22) against bearing (39). Torque in place at 40 ± 10 foot pounds. 28. Spot drill outer tube (41) through set screw hole (use drill slightly smaller than ID of thread). Remove chips and install set screw (35) and lock in place aginst outer tube (41). 29. Assembly of Motor: I. Assemble brake cam (26) on pinion (32). II. Install brake spring (27) into motor adaptor (29) (see figure 4-2). III.
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Figure.
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Warning Use only replacement parts supplied by or approved by Duff-Norton. Non-authorized parts may be inadequate, resulting in serious injury or death in event of failure. Figure 5-1.
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Section V Illustrated Parts List 5-1. Parts List Parts List For Duff-Norton Actuator 3905, 3904, 6905 & 6904 Series, DC With Limit Switch. †† Optional Index Qty. No. Part Name Req. 1 Screws 4 2 Switch Cover 1 2 Switch Cover(Optional Pot. Unit) 1 3 Switch Cover Gasket 1 3 Switch Cover Gasket(Optional Pot. Unit) 1 4 Instruction Decal 1 5 Worm Gear(Potentiometer Opt.) 1 6 Potentiometer Bracket (Optional) 1 7 Potentiometer (Opt.) Incl.
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Section VI Technical Illustrations 6-1. Limit Switch Wiring Diagram Duff-Norton’s PDC Series Control Box or 2 SPDT Relays must be used to avoid burning up the limit switches. Low voltages may reduce load rating of the actuator Figure 6-1. Limit Switch Wiring Diagram, DC Actuator 6-2. Limit Switch Assembly Figure 6-2.
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Notes 14
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Notes 15
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P.O. Box 7010 Charlotte, NC 28241-7010 General Office (704) 558-0510 Customer Service (800) 477-5002 FAX (704) 588-1994 Email: duffnorton@cmworks.com www.duffnorton.com © Duff-Norton 2006 16 SK-6905-200 .