LiftMaster BG770 Support Question
LiftMaster BG770 Support Question
Find answers below for this question about LiftMaster BG770.Need a LiftMaster BG770 manual? We have 1 online manual for this item!
Question posted by ace1179 on July 19th, 2015
Gate Is Stuck In Up Position Only
reset everything and still only will stay in up position
Current Answers
Answer #1: Posted by TommyKervz on July 19th, 2015 8:28 AM
TommyKervz
Member since:
January 10th, 2013 Points: 17,776,823
Member since:
January 10th, 2013 Points: 17,776,823
Please try the instructions on the link: http://liftmaster.custhelp.com/app/answers/detail/a_id/138/kw/stuck%20open/session/L3RpbWUvMTQzNzMxOTQzNy9zaWQvdy1rNDJNcm0%3D
Related LiftMaster BG770 Manual Pages
BG790 Manual - Page 1
OWNER'S MANUAL
MODELS BG770 & BG790
VEHICULAR BARRIER GATE OPERATOR
MODELS BG770 AND BG790 ARE FOR VEHICULAR PASSAGE GATES ONLY AND ARE NOT INTENDED FOR PEDESTRIAN PASSAGE GATE USE
BG790 Manual - Page 2
...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
WARNING
Mechanical
WARNING
Electrical
CAUTION
When you see this manual and... 15
REPAIR PARTS
Illustrated Parts - Model BG770 17 Illustrated Parts - Model BG770 16 Repair Parts - The hazard may come from something mechanical or from electric ...
BG790 Manual - Page 3
... wiring has been made, in vertical position. Gear oil is designated by removal of access device open button, or loop detector to 24'
DIMENSIONS
22"
44" 35"
Typical Installation
Typical Installation
3 An optional timer will extend the time that the gate remains open will lower automatically unless hold open (N.O.) output contact (most access control equipment...
BG790 Manual - Page 4
... appropriate for user activation must be located at the bottom edge of a vehicular horizontal slide gate. Swinging gates shall not open position. The Stop and/or Reset (if provided separately) must take into account the possible hazards associated with the vehicular gate during the entire path of travel , one component. A minimum of two (2) WARNING SIGNS shall...
BG790 Manual - Page 5
...NOTE: Install line power here. The arm (when provided) is in the "AUTO" position. Select locations for connection of the power ON/OFF switch.
4. OPERATOR PREPARATION
1. Refer ... to local electrical codes (Figure 1). MODEL BG770 PACKING LIST
PART NUMBER DESCRIPTION
QTY
02-102
Open/Close Push Button
1
07-8007
Gate Arm Hub
1
10-8007M
Gate Bracket
1
80-G0187
Key, 1/2 x ...
BG790 Manual - Page 6
... height to Calculate Arm Length below .
3. Cut to desired length. Tapering the wood as follows: 99" (height to reduce any warping common with every BG790 gate. Pad depth should be below the frost line or as a template. Concrete pad should be level and above the ground line.
14-1/2"
4. Secure operator with...
BG790 Manual - Page 7
...BG770 and BG790 barrier gate. If you are using automatic controls to control the gate, the 2-button control station may result in SEVERE INJURY to persons and/or damage to open and/or hold open... BEFORE proceeding. A 2-button control station (OPEN/CLOSE) is too small, damage to properly ground this unit could result in the "AUTO" position. Refer to the wiring diagram supplied inside ...
BG790 Manual - Page 8
...flange (Figure 6). INSTALLATION
ARM ATTACHMENT
For easier access during some of the steps.
MODEL BG770: OPTIONAL ARM Attach arm to DISCONNECT power while installing the arm attachment.
WARNING
When ... of the gate cabinet and away from the belt and drive shaft or SERIOUS INJURY may be opened by removing the two wing nuts from underneath, inside the cabinet. MODEL BG770: STANDARD ARM...
BG790 Manual - Page 9
... (Figure 7). Figure 7
18-5/8"
30" Radius
Wishbone Arm Arc of Travel Ensure adequate clearance for gate to start when you turn and the drive shaft will move during some of arm. Bend and ...WARNING
When following the procedure below, the motor belt will turn the power on power and test the gate. Be sure to the arms for extension arm preparation.
3. Be prepared for travel of the steps...
BG790 Manual - Page 10
...
crank arm on the motor by hand until the gate arm is perfectly aligned with center of crank arm for lowest point of travel of the turnbuckle shaft Insert a screwdriver or other similar tool into the hole in this position at the factory. 2.
MODEL BG770 TURNBUCKLE SHAFT ALIGNMENT If necessary, align turnbuckle shaft...
BG790 Manual - Page 11
...limit switch also.
1. Loosen the OPEN cam and rotate in the desired position, retighten the set screw.
When the gate arm is on the cam. OPEN Direction CLOSE Direction
11 INSTALLATION
LIMIT ... position, retighten the set screw on its lowest position (Figure 12).
2. This adjustment may have to reset the cam on power and running the unit for the first time. Figure 12
Open ...
BG790 Manual - Page 12
...detectors (P/N 71-416-3NH). A standard residential door radio receiver has a three wire connection marked 1, 2, 3. The transmitter button will open the gate if it is closing. All devices connected ...made the power connection described above, you may be used in conjunction with model BG770 and BG790. OPTIONAL ACCESSORIES
VEHICLE DETECTORS
Almost all types of the cabinet. FACTORY ...
BG790 Manual - Page 13
... reset button is located on the right side of the two button control station, or by other control device will start by either manual or automatic). MANUAL OPERATION
ACCESS CONTROL "EMERGENCY" BYPASS
To open the gate in the up position, and no other means if provided.
OPERATING INSTRUCTIONS
ELECTRICAL OPERATION
The BG770 and BG790 barrier gate...
BG790 Manual - Page 14
... and powered by increased power demands in one position until the signal from the power supply to open or close . • The operator will not open. If an accessory item is okay from the... obvious one accessory at only specific times during the day or night. the operator will hold the gate in a general area at the control transformer's primary terminals.
This will not run. • The...
BG790 Manual - Page 15
...-ohmmeter, take continuity readings across the contacts of transformer for close position. now press down on 2.
Does the gate move freely? The limit switches are five (4) items in either ... voltage circuit! Did the operator run in the controller (Model BG770 uses a manual reset overload).
It is either the open or full close ). These limit switches tell the operator to...
BG790 Manual - Page 17
... Switch Box Duplex Outlet Cover 1-32 x 1/8 Spacer Nylon Sensor Spacer Barrier Gate Gear Reducer 8 Position Terminal Block 10 Position Terminal Block Single Arm (Optional) 6-32 Tinnerman Nut 3/4 Flat Washer Access Panel... Fuse
1
1
25-2006
6A Fuse
8 1 2
25-2010
Used on: BG770-50-21 10A Fuse
1
Used on: BG770-50-11
17 MODEL BG770
INDIVIDUAL PARTS
ITEM PART #
1 03-8024-K 2 07-8003 3 07-8004 ...
BG790 Manual - Page 19
...1
8 Position Terminal Block
1
Wishbone Arm
1
Counterweight Kit
1
6-32 Tinnerman Nut
1
1/4 x 1/4 x 1-1/4 Disconnect Key 1
Access Panel Lock
1
1/2-20 x 1-1/4 Hex Head Bolt 18
1/2-20 x 1-1/2 Hex Head Bolt 6
3/4-10 x 2-1/2 Hex Head Bolt 2
3/8-16 x 3/8 Cone Point Set Screw 8
3/4-16 Jam Nut
1
3/4-10 Hex Nut
2
1/2 Flat Washer
24
1/2 Split Lock Washer
38
Limit Collar
4
Open/Close...
BG790 Manual - Page 21
.... (W)
(PUR) 1) REMOVE JUMPER WHEN TIMER TO
CLOSE IS USED. 2) REMOVE JUMPER TO CAUSE GATE
ARM TO CLOSE IMMEDIATELY UNLESS HOLD OPEN LOOP IS ACTIVATED.
(OR)
OP 56 1 CL 2
(1 of rating. APPLICATIONS: CONTROL WIRING TYPE L2
MODEL TYPES:
FIELD WIRING
BG770, BG790
HORSEPOWER: VOLTAGE/PHASE:
1/2 115/230V, 60Hz, 1 PHASE ONLY
DRAWING NUMBER:
DATE: 08...
BG790 Manual - Page 22
...CAUSE GATE ARM TO CLOSE IMMEDIATELY UNLESS HOLD OPEN LOOP IS...OPEN LOOP
(R)
24V HOLD OPEN LOOP
J3-8
(R) J4-8
(OPTIONAL EQUIPMENT)
NOTES:
1) TRANSFORMER PRIMARY VOLTAGE SAME AS OPERATOR LINE VOLTAGE 24V SECONDARY
2) WE RECOMMEND USING A DEDICATED CIRCUIT BREAKER FOR EACH OPERATOR.
1
APPLICATIONS: CONTROL WIRING TYPE
FIELD WIRING & ADJUSTMENTS
MODEL TYPES: HORSEPOWER: VOLTAGE/PHASE:
BG770...
BG790 Manual - Page 23
REFER TO INSTRUCTIONS ACCOMPANYING DETECTOR.
RADIO CONTROL WILL OPEN GATE AND REVERSE IF CLOSING. NOTES: 1) REMOVE THIS JUMPER TO CAUSE GATE ARM TO CLOSE IMMEDIATELY WHENEVER IT IS OPENED, UNLESS A VEHICLE IS ON THE
HOLD OPEN LOOP. POWER LINES MUST BE CONNECTED TO THE POWER SWITCH.
23 CONTROL CONNECTION DIAGRAM
IT IS IMPORTANT TO READ ALL...
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