Table Of Contents; Carton Inventory - Chamberlain LiftMaster Professional SW420 Installation Manual

OPERATOR SPECIFICATIONS
Carton Inventory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Operator Dimensions and Specifications . . . . . . . . . . . . . . . . . . . 3
UL325 Model Classifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
OPERATOR WARNINGS
Suggested Safety Protection Device Locations. . . . . . . . . . . . . . .5
Safety Installation Information . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Gate Construction Information . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Safety Precautions for Swing and
Ornamental "Grill Type Gates" . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Warning Sign Placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
INSTALLATION
Post Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Pad Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Pedestal Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Control Arm Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Mechanical Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
WIRING
Power Wiring Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
On/Off Switch Power Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Stop/Reset Button Control Wiring (Required) . . . . . . . . . . . . . . 15
ADJUSTMENT
Programming the Radio Receiver. . . . . . . . . . . . . . . . . . . . . . . .16
Limit Switch Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
RPM Sensor (Hall Effect) Adjustment. . . . . . . . . . . . . . . . . . . . .18
Sequenced Access Management System (SAMS) . . . . . . . . . . . 19
Accessory Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-21
Control Board Illustration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Controller Programming and Features . . . . . . . . . . . . . . . . . 23-24
Program Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25-26
TROUBLESHOOTING
. . . . . . . . . . . . . . . . . . . . . . . . . . . 27-28
MAINTENANCE
Operator Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Single Phase Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . .30
Repair Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Illustrated Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Safety Accessories for Secondary Entrapment Protection . . . . .33
Control Connection Diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . .34
OPERATOR NOTES
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
WARRANTY POLICY
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
WARNING WARNING
Mechanical
CAUTION
WARNING WARNING
WARNING
CAUTION CAUTION
T A B L E O F C O N T E N T S
Electrical
WARNING
IMPORTANT NOTE
• BEFORE attempting to install, operate or maintain the operator,
you MUST read and fully understand this manual and follow all
safety instructions.
• These instructions are intended to highlight certain safety
related issues. These instructions are not intended to be
comprehensive. Because each application is unique, it is the
responsibility of the purchaser, designer, installer and end user
to ensure that the total gate system is safe for its intended use.

CARTON INVENTORY

Before beginning your installation check that all components
were supplied and received undamaged. Refer to list below
for factory supplied parts.
HARDWARE KIT
SW420 (K77-SW420)
PART NO. DESCRIPTION
01-G0582 Safety Gate Brochure
02-401-SP Stop Button
07-2705 Arm Stop
10-2111 Gate Bracket
11-2754 U-Bolt Nut Tool
12-2727 Bushing 3/8"
40-3505 Warning Sign
80-10026 Washer, Shim 3/8"
80-206-65 Spacer
80-2754 U-Bolt Nut
82-HN38-16 Bolt 3/8-16 x 1"
82-HN38-18 Hex Head Bolt 3/8-16
82-SH37-10 Socket Head Bolt 3/8-24
85-FW-38S Flat Washer 3/8"
When you see these Safety Symbols and Signal Words on the
following pages, they will alert you to the possibility of serious
injury or death if you do not comply with the warnings that
accompany them. The hazard may come from something
mechanical or from electric shock. Read the warnings carefully.
When you see this Signal Word on the following pages, it will alert
you to the possibility of damage to your gate and/or the gate
operator if you do not comply with the cautionary statements that
accompany it. Read them carefully.
2
QTY.
1
1
1
1
1
3
2
2
4
2
1
2
1
1
WARNING
WARNING
WARNING
WARNING