The equipment shown in this manual is intended for industrial use only and should not be used to lift, support, or otherwisetransport people unless au

f. Assemble motor (53) into housing (42) . Before assembling lock washers (46) and socket head screws (45), hold motor firmly in place and, with a scr

1138. Assembly of Covera. Feed motor (53) lead wires into capacitor box cover (9). Care should be taken not to damage lead wires. Assemble cover on ho

12FIGURE 5-1. EXPLODED ILLUSTRATION 6420 & 7420 SERIESAC BALL SCREW ACTUATORWARNINGUse only replacement parts supplied by or approvedby Duff-Norto

Spacer NutSet ScrewOutput GearWoodruff KeyGasketHousingGear SpacerWasherSocket Head Cap ScrewLock WasherCouplingRetaining RingSpringRubber GrommetInse

6-2. LIMIT SWITCH WIRING DIAGRAM6-1. BRAKE ALIGNMENTSECTION VITECHNICAL ILLUSTRATIONS14FIGURE 6-2. LIMIT SWITCH WIRING DIAGRAM,6420 & 7420 SERIES

156-3. LIMIT SWITCH ASSEMBLYFIGURE 6-3. LIMIT SWITCH ASSEMBLY,6420 & 7420 SERIES AC BALL SCREW ACTUATOR**MOTOR LEAD WIRE (RED) SMALL TERMINAL* MOT

ECO 98865SK-6420-6.5M\1006P.O. Box 7010 • Charlotte, NC 28241-7010Phone: (800) 477-5002 • (704) 588-4610Fax: (704) 588-1994Email: duffnorton@cmwo

SECTION I1-11-21-31-4TABLE 1-4TABLE 1-4-11-5FIGURE 1-6SECTION II2-12-22-32-4SECTION III3-1SECTION IV4-14-24-34-44-5SECTION VFIGURE 5-15-1SECTION VI6-1

1-1. GENERALThis manual provides instructions for the installation,operation and maintenance of the Duff-Norton 6420 &7420 Series AC actuator. It

4Applied Standard StandardLoad 115 Volt 220 Volt(lbs.) Motor Motor(60 Hz) (50 Hz)500 600 7001000 600 6751500 600 6502000 600 625Duty Cycle(in/hour)FIG

2-1. INSTALLATION PROCEDURESUse Figure 6-2 as a guide to properly attach the SPA-6420 AC Ball Screw Super-Pac™ actuator to your powersource. 2-2. LIM

SECTION IIIOPERATIONii. Being careful not to turn the pot shaft, slide it into engagement with the plastic worm and tighten locknut.iii. Re-check resi

capacitor from box.6. Disconnect jumper wires (17 and 18) and motor (53) lead wire terminals from switches (16). Remove jumper wires (17 and 18) and p

19. Remove spring (61) from end of screw (62).20. Remove intermediate cluster gear (33), intermediate pinion shaft (32) and thrust washer (31).21. Rem

912. Attach red terminal wire (17) to common terminal of left side switch (16). Attach blue terminal wire (18) to common terminal of right side switch