Repair Parts; Installation Parts; Motor Unit Assembly Parts - Chamberlain Liftmaster Security+ 3900PLD Owner's Manual

For light duty commercial use install on sectional doors with torsion assemblies only
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REPAIR PARTS

Installation Parts

1
KEY
PART
NO.
NO.
DESCRIPTION
1
APBS 1
Single button control station
2
41A4582
Emergency release rope & handle
assembly
3
41B4494-1
2-Conductor bell wire - white & white/red
4
41A6104
Cable tension monitor
5
41C0902
Mounting bracket
6
41A5034
Safety sensor kit (receiving and
sending eyes) with 3' (.9 m)
2-conductor bell wire attached

Motor Unit Assembly Parts

KEY
PART
NO.
NO.
DESCRIPTION
1
41DJ001
Logic board complete with plate
2
41A6408
Absolute Encoder System
3
41C168
Transformer
3
2
2
1
3
5
4
6
KEY
PART
NO.
NO.
DESCRIPTION
7
41A6388
Collar with set screws (2)
8
41A5266-1
Safety sensor brackets (2)
NOT SHOWN
41A6298
Installation hardware bag
(includes hardware listed on page 5)
114A3593
Owner's manual
4
KEY
PART
NO.
NO.
DESCRIPTION
4
41A6095
Motor with bracket
5
41B122
Power cord
6
41A6348-3
Cover
29
8
7
6
5

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