Chamberlain 3850 User Manual

36
2
4
5
1
3
6
7
KEY PART
NO. NO. DESCRIPTION
1 4A1008 Master link kit
2 41B5424 Belt pulley bracket
3 41B3869-3A Complete trolley assembly
4 2777BD One-piece Rail 7 feet (2.1 m)
2778BD One-piece Rail 8 feet (2.4 m)
2770BD One-piece Rail 10 feet (3 m)
5 41A5434-11 Full belt assembly
6 41B4103 Tensioner assembly
7 83A11-2 Rail grease
8
11
12
6
NOTICE
UP
CEILING MOUNT ONLY
9
7
1
5
10
13
14
LOCK
LIGHT
3
4
2
Installation Parts
REPAIR PARTS
Rail Assembly Parts
KEY PART
NO. NO. DESCRIPTION
1 398LM Smart Control Panel
®
2 373P 3-Button remote control
3 10A19 3V2016 Lithium battery: LED and opener
4 10A33 3V2450 Lithium battery: proximity switch
5 29C151 Remote control visor clip
6 41A2828 Emergency release rope and handle assembly
7 41B4494-1 2-Conductor bell wire, white & white/red
8 41A5047-1 Door bracket w/clevis pin & fastener
9 41A4353-1 Header bracket w/clevis pin & fastener
10 41A5034 Safety reversing sensor kit (receiving and
sending eyes) with 3 feet (.9 m) 2-conductor
bell wire
11 178B34 Straight door arm section
12 178B35 Curved door arm section
13 41A5266-1 Safety reversing sensor brackets (2)
14 485LM Battery
NOT SHOWN
101D173 Push bar for door control
41A2770-13 Installation hardware bag
(includes hardware listed on page 5)
114A3406 Owner’s manual
114A3406SP Owner’s manual - Spanish
5

Chamberlain 3850 Specifications

General

Brand	Chamberlain
Model	3850
Category	Garage Door Opener
Language	English