Chamberlain 3280 1/2 HP Garage Door Opener User Manual


 
Motor Unit Assembly Parts
34
2
10
8
13
14
15
19
4
5
3
9
16
12
7
18
11
17
1
6
6
7
DN
UP
Brown
Wire
(Down)
Contact
LIMIT SWITCH ASSY.
Grey
Wire
Yellow
Wire
(Up)
Contact
Center Limit
Contact
Drive
Gear
KEY PART
NO. NO. DESCRIPTION
1 41A4371 Belt cap retainer
2 41A4885-5 Gear and sprocket assy.,
Complete with: Spring washer; Thrust
washer; Retaining ring; Bearing plate;
Roll pins (2); Drive gear and worm gear;
Helical gear w/retainer and grease
3 41A2817 Drive/worm gear kit w/grease, Roll pins
(2)
4 41B4245 Line cord
5 41A5484-1 End panel w/all labels
6 4A1344 Light socket
7 108D79 Lens
8 30B532 Capacitor – 1/2 HP.
9 12A373 Capacitor bracket
10 41A3150 Terminal block w/screws
KEY PART
NO. NO. DESCRIPTION
11 41C4842 Universal replacement motor &
bracket assembly,
Complete with: Motor, worm,
bracket, bearing assembly, RPM
sensor.
12 41A5525-3 Cover
13 41A2818 Limit switch drive & retainer
14 41D3452 Limit switch assembly
15 41A2822-1 Interrupter cup assembly
16 41C4398A RPM sensor assembly
17 41AB050 Receiver logic board assembly
Complete with Logic board
18 41C5497 High voltage wire harness
41C5548 Low voltage wire harness
19 41D180-1 End panel
NOT SHOWN
41A2826-1 Shaft bearing kit
41A2825 Opener assembly hardware kit
(includes screws not designated
by a number in illustration)