LiftMaster SW420 Support Question
LiftMaster SW420 Support Question
Find answers below for this question about LiftMaster SW420.Need a LiftMaster SW420 manual? We have 2 online manuals for this item!
Question posted by lcstoff on April 16th, 2018
Liftmaster Sw420 Gate
Liftmaster SW420 gate will open then will not close. Next time may work fine. Next time may not open.
Current Answers
Answer #1: Posted by Odin on April 17th, 2018 9:09 AM
Odin
Member since:
April 10th, 2010 Points: 41,236,690
Member since:
April 10th, 2010 Points: 41,236,690
See the third SYMPTOM at https://www.manualslib.com/manual/609819/Chamberlain-Liftmaster-Professional-Sw420.html?page=28#manual.
Hope this is useful. Please don't forget to click the Accept This Answer button if you do accept it. My aim is to provide reliable helpful answers, not just a lot of them. See https://www.helpowl.com/profile/Odin.
Related LiftMaster SW420 Manual Pages
SW420 GL BOARD Manual - Page 1
... AND IS NOT INTENDED FOR PEDESTRIAN PASSAGE GATE USE. VISIT WWW.LIFTMASTER.COM TO LOCATE A PROFESSIONAL INSTALLING DEALER IN YOUR AREA.
GLCONTROLLER BOARD
MODEL SW420
LIGHT DUTY SWING GATE OPERATOR
2 YEAR WARRANTY
Serial located on electrical box cover) Installation Date
INTENDED FOR PROFESSIONAL INSTALLATION ONLY. THIS MANUAL IS TO BE LEFT WITH THE PROPERTY...
SW420 GL BOARD Manual - Page 2
...application is unique, it is safe for its intended use. Read the warnings carefully.
HARDWARE KIT SW420 (K77-SW420)
PART NO. 01-G0582 02-401-SP 07-2705 10-2111 11-2754 12-2727 40-3505... 80-10026 80-206-65 80-2754 82-HN38-16 82-HN38-18 82-SH37-10 85-FW-38S
DESCRIPTION Safety Gate Brochure Stop Button Arm Stop Gate...
SW420 GL BOARD Manual - Page 4
... D
D or E
or D
D or E
The chart above . Type D: Connections provided for use in both sides of the gate to operate the operator open and close . The opener can be used for secondary protection.
Do not let children operate the gate or play in audio alarm. CLASS I , Class II, Class III and Class IV applications.
Examples include...
SW420 GL BOARD Manual - Page 16
....
• ALWAYS keep remote controls out of reach of moving gate or garage door:
operate in the "M" (Momentary) position, the contacts
AVERTISSEMENT will stay closed . Press and release the "learn" button on residential garage door openers
because it can be seen clearly, is subject to opener (Figure 3). The opener will now operate when the push button on either
Security...
SW420 GL BOARD Manual - Page 17
... move gate and rotating limit collars slightly to rotate arm in opposite direction, and press STOP button when arm is pointed in the close limit switch. Stop when cam just clicks close direction.
5. Fine tune both switch settings by set screw.
7. Push manual release pin up through the control arm, slide clevis pin in open...
SW420 GL BOARD Manual - Page 19
... conduit between the BG770 and the SW420 for correct functionality of time or
b.
Attach a wire from terminal J1-8 on the control board to terminal 3 on the control board in the SW420 and locate the auxiliary limit switch in the open and allow the vehicle to close followed by first opening the gate farthest from the vehicle, the...
SW420 GL BOARD Manual - Page 20
... Block
FREQ FREQ
FREQ
24 Vac
Control Board
J1 Terminals 1 & 5 - This input protects cars by the gate stopped and entrapment alarm on the open the gate by activating the remote control when the gate is closed or between limits. Soft Open These terminals are intended for use as a single button control. This input functions to reverse...
SW420 GL BOARD Manual - Page 21
... of this input will allow the user, in emergencies, to close control
HARD CLOSE CONTROL INPUT
of a three-button station that is detected (gate edge or RPM sensor), gate will pause an opening gate to reset the gate after an entrapment fault.
STOP/RESET BUTTON WIRING R1 R2 R3 R4 3 5
OPEN
CLOSE
STOP
STOP
J1 Terminals 4 & 5 - Activation of the...
SW420 GL BOARD Manual - Page 25
... = Slide • SW = Swing
RIGHT/LEFT OPERATION
This switch selects the gate opening direction, to the left or to -Close feature works in OFF position. When switch is ON, no settings can be set to optimize gate behavior for specific application. On an open command there will beep 3 seconds prior to take effect this switch must...
SW420 GL BOARD Manual - Page 30
...GATE
1
2
SEE NOTE 1 PRIMARY R2 24VA C SEC
SEE NOTE 5 J1-11
J1-6
OPTIONAL WIRE
(OR)
HARNESS P/N 90-G0601
FIELD WIRING
R1 R2 R3 R4
35
5
8
9 10 11 12
24 VAC
RADIO SIGNAL
STOP
INTERRUPT LOOP
ENTRAPMENT OPEN
ENTRAPMENT CLOSE...APPLICATIONS:
CONTROL WIRING TYPE - LOOP OBS. OPEN OBS. GL FIELD WIRING & ADJUSTMENTS
MODEL TYPES: HORSEPOWER: VOLTAGE/PHASE:
SW420 1/3 115V & 230V - 1 PHASE ONLY...
SW420 GL BOARD Manual - Page 31
...-18362)
DESCRIPTION
QTY
Arm (and Arm Extension)
1
Arm Extension (and Arm)
1
Arm Stop
1
Arm Hub
1
Gate Bracket
1
Keyed 1" ID 1-1/4 1/8" FG
1
Flanged Bushing
3
Clevis Pin
1
Latch Pin
1
Hex Head Bolt ...
Refer to the parts lists below for replacement parts available for your operator. For example:
SW420-33-11 (Operator) = K73SW420-33-11 (Electrical Box Kit)
Motor Kits To order ...
SW420 GL BOARD Manual - Page 34
... OPEN INPUT (N.O.)
1 2 3 5 6
7 8 9 0 #
HARD OPEN CONTROL INPUT (N.O.)
OPEN CLOSE STOP
HARD CLOSE CONTROL INPUT (N.O.)
OPEN CLOSE STOP
SHADOW LOOP INPUT (N.O.)
STOP/RESET CONTROL INPUT (N.C.)
OPEN CLOSE STOP
INTERRUPT (SAFETY) LOOP INPUT (N.O.)
OBSTRUCTION OPEN EDGE/PHOTO EYE INPUT (N.O.)
OBSTRUCTION CLOSE EDGE/PHOTO EYE INPUT (N.O.)
RESIDENTIAL RADIO (SINGLE BUTTON) INPUT (N.O.)
SW420 Operator...
SW420 S3 BOARD Manual - Page 1
Installation and Maintenance Instructions
Swing Gate Operator Model SW420
Doc 01-G0610 Rev A
SW420 S3 BOARD Manual - Page 3
Accessories 28 3.
Read and follow all instructions.
This gate operator is intended for use on a gate that swings in an arc in a horizontal plane. Low Voltage Circuit 29 5. Doc 01-G0610 Rev A Contents
3
1. SW420 31 Warranty Policy 33
IMPORTANT!
Power 27 2. Primary Voltage Circuit 28 4. Please leave this manual at the job site, preferably...
SW420 S3 BOARD Manual - Page 4
... four single family dwelling or a garage or parking area. CLASS 3 A vehicular gate operator or system intended for use in a commercial location or building such as a factory or loading dock area or other building servicing the general public. Damage claims must be filed with the freight carrier. PART #
SW420
02-041-SP 07-2703...
SW420 S3 BOARD Manual - Page 10
...injury could result. The S3 PCB is off.
10
Preparing the Installation
Operator Preparation
1 Open the service cover on the electrical box.
2 To service the solid state controller or other...down and out. Power supply wiring will find the electrical enclosure stored vertically.
The SW420 is mixed voltage in the bottom of the operator. All the electrical connections for ...
SW420 S3 BOARD Manual - Page 13
... in
and lockwashers (not supplied). It is very important that the operator be level and square to Figure 7. Pivot Gate
Fence Line
Pivot Gate
Fence Line
18"x30" Pad Minimum
3/8" L-Bolts
SW420 PAD PARALLEL MOUNT
SW420 PAD PERPENDICULAR MOUNT
01-G610F9
Hardware Typ. (6X)
Figure 7
Pad Mount Bracket
Doc 01-G0610 Rev A Pad depth...
SW420 S3 BOARD Manual - Page 14
...Pedestal Mount Installation
1 Locate pedestal according to the fence and the gate is
the pedestal by local codes.
3 Bolt the mounting brackets to... fence. It is critical.
PIVOT
HINGE PIN FENCE LINE
PIVOT
HINGE PIN FENCE LINE
GATE
GATE
SW420 PEDESTAL PARALLEL MOUNT
PEDESTAL 24" DEEP IN-GROUND MINIMUM
SW420 PEDESTAL PERPENDICULAR MOUNT
Doc 01-G0610 Rev A
NUT TYP. (8X)
BOLT TYP. ...
SW420 S3 BOARD Manual - Page 17
... will work as a single button (Open, Close, Stop). The Close command will only close , reopen. If power has been interrupted, the operator will activate.
If closing, the Open command will cause the operator to stop . Figure 12 SINGLE BUTTON CONTROL (SEQUENCE OF OPERATION) Open to gate movement, and stay on 2 seconds prior to open limit, close the operator from the open limit...
SW420 S3 BOARD Manual - Page 32
...SCREW 6-32 x 1/2 PHILLIP PAN HEAD SCREW (N) 6-32 x 2-1/2 SLOTTED ROUND HEAD SCREW (N) 8-32 x 1/4 SELF TAPPING PHIL. SW420
Part #
02-041-SP 07-2703 07-2704 07-2705 07-2706 10-2111 10-2701-T 10-2702 10-2703 10-2704 10-2705... 74-G0568 74-G0609 74-G0684 74-SW420 75-G0090 75-G0552 76-G0564
Description
STOP BUTTON ARM EXTENSION ARM ARM STOP ARM HUB GATE BRACKET TAN HOUSING ASSY REDUCER BRACKET BEARING...
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