Chamberlain PD420-2 Manuel D’Utilisation

Motor Unit Assembly Parts

38

DN

UP

Brown
Wire

(Down)
Contact

LIMIT SWITCH ASSY.

Grey
Wire

Yellow
Wire

(Up)
Contact

Center Limit
Contact

Drive
Gear

2

1

3

4

5

6

7

8

8a

8b

8c

9

10

11

11a

11

12

13

14

15

16

17

8d

8d

8e

8f

8g

18

KEY

PART

NO.

NO.

DESCRIPTION

1

31D477

Drive shaft cover

2

41B4245

Line cord

3

30B363

Capacitor – 1/2 HP

4

12A373

Capacitor bracket

5

41A3150

Terminal block w/screws

6

41D4671

Limit switch assembly

7

12D630

Bracket: light socket, limit switch

8

41A5388

Motor drive assy complete with:

8a

144B41

22T Pulley

8b

144B42

28T Pulley

8c

20B17

Drive belt

8d

158A69

Retainer rings

8e

41C556

Isolator bracket spacers

KEY

PART

NO.

NO.

DESCRIPTION

8f

41A5394

Assy. bracket motor mount

8g

81B170-1

Shaft limit worm

9

41C4672

Screw drive RPM kit

10

41A4837-1

Worm gear and retainer

11

41C5417

Low voltage wire harness

11a

41C5416

High voltage wire harness

12

41A5389-1C

Receiver logic board assy.

13

41C1473

Cover

14

41C22-1

Drive coupling hub

15

175C147

Light socket

16

108D60

Light lens

17

41A5387

Chassis with rail bracket

18

12B654

Motor support bracket