Chamberlain BG770 User's Manual
Contents
1. 15 5032 80 1003 91 60122 80 8001 32 8002 3 O 80 207 36 NO Q 20 XXXX X 17 2001 16 8002 17 2002 10 8014 23 2761 10 8051 T 42 3608 eee OPERATOR ASSEMBLY a WISHBONE ARM NOT SHOWN Figure 16 Doc 01 G0674 Rev E BG790 Parts List PART NO 02 102 N 32 8002 1 42 110 2 1 1 80 1003 1 STANDARD PARTS DESCRIPTION OPEN CLOSE KEY SWITCH 3 POLE CONTACTOR DIN RAIL ARM HUB CRANK LINK UPPER CRANK LOWER CRANK SWITCH BRACKET TAN TOP COVER TAN ACCESS COVER ELECTRICAL PANEL BEARING PLATE ELECTRICAL PANEL HANGER KIT TAN HOUSING COUNTERWEIGHT CLAMP N A MAIN SHAFT INTERMEDIATE SHAFT 4 BOLT FLANGED BEARING FEMALE ROD END FEMALE ROD END METAL GASKET RUBBER GROMMET 50B32 SPROCKET 50B12 SPROCKET COGGED BELT 8 PULLEY 2 PULLEY 50 CHAIN 50 CHAIN MASTER LINK 50 CHAIN HALF LINK TRANSFORMER SPDT LIMIT SWITCH ROCKER SWITCH TOGGLE OUTLET COMBINATION 24VAC DPDT RELAY 3PDT 24V RELAY SWITCH BOX DUPLEX OUTLET COVER 1 32 x 1 1 8 SPACER NYLON SENSOR SPACER GEAR REDUCER 10 POSITION TERMINAL BLOCK 8 POSITION TERMINAL BLOCK WISHBONE ARM COUNTERWEIGHT KIT CONTROL BOX 6 32 TINNERMAN NUT PARTS DESIGNATED N ARE NOT SHOWN ON DRAWING PARTS HAVING ONE OR MORE X IN THE PART NO VARY FROM MODEL TO MODEL SEE VARIABLE PARTS BELOW VARIABLE P N VARIABLE PARTS DESCRIPTION PART NO 80 1904N N BG790 Drawi2. CHAMBERLAIN PR O L Installation and Maintenance Manual 01 G0674F1 Barrier Gate Operator Models BG770 amp BG790 Doc 01 G0674 Rev E 2 Contents Contents General Product Information Specifications Safety Instructions Before Installation During Installation After Installation Preparing the Installation Unpack Carton Preparing the Site Preparing the Operator Installation Step 1 Mounting Step 2 Arm Fabrication Step 3 Wiring Connections Step 4 Arm Attachment Step 5 Armand Turnbuckle Shaft Adjustments Step 6 Limit Switch Adjustments Optional Accessories Vehicle Detectors Radio Controls Card Readers Keypads or other Operating Instructions Electrical Operation Manual Operation Troubleshooting 1 Power 2 Accessories 3 Primary Voltage Circuit 4 Low Voltage Circuit General Reference Information Doc 01 G0674 RevE oo NAA A BA Exe s re oo OQ U N a N NO N AO NO bo po dw deg N N N WN Mm WH N N Contents 3 Required Maintenance Normal Usage 26 Toc509797299 BG770 Drawing and Parts List 27 BG770 Exploded View 27 BG770 Parts List 28 BG790 Drawing and Parts List 29 BG790 Exploded View 29 BG790 Parts List 30 01 G1014 Wiring Diagram 31 01 G1014 Field Wiring Diagram 32 01 G1015 Wiring Diagram 33 01 G1015 Field Wiring Diagram 34 Warranty Policy 35 Doc 01 G0674 Rev
3. HOLD OPEN LOOP PRESENCE J4 4 maga Mak 10 ev BL 24V COIL TE Nd 24V COIL OPTIONAL REMOVE JUMPER WHEN ADD JUMPER WHEN USING CLOSE BUTTON TIMER IS ADDED DO NOT USE WITH HOLD OPEN LOOP ae e rv a ae J3 7 TAR cS pr 4 4 WS LOOP on apoo EE LOOP WIRES TERMINAL BLOCK OPTIONAL bru OPEN El HOLD N WIRE CONNECTION FOR STANDARD CONTROL DEVICES BRN bru El LOOP Ki OPEN LOOP WIRE CONNECTION FOR OPTIONAL CONTROL DEVICES GY DO isas LOOP WIRES OPTIONAL WIRE CONNECTION FOR 230V UNITS ONLY L BK 17 5 K IS CONNECTOR FOR 24V OPEN LOOP DETECTOR Le IS CONNECTOR FOR 24V HOLD OPEN LOOP DETECTOR gt OPTIONAL EQUIPMENT d NOTES APPLICATIONS 1 TRANSFORMER PRIMARY VOLTAGE SAME AS OPERATOR LINE VOLTAGE CONTROL WI RING TYPE L2 24V SECONDARY 2 RELAY COIL VOLTAGE SAME AS OPERATOR LINE VOLTAGE FI E LD WI R NG 3 WE RECOMMEND USING A DEDICATED CIRCUIT BREAKER FOR EACH OPERATOR MODEL TYPES BG770 BG790 HORSEPOWER 1 2 ae VOLTAGE PHASE 115 230V 60Hz 1 PHASE ONLY CHAMBERLAIN ES D
4. 5 16 18 SERR FLANGE LOCK NUT 3 8 16 SERRATED FLANGE NUT 1 4 20 WING NUT 5 16 FLATWASHER 3 8 FLATWASHER 1 2 FLATWASHER 9 16 SPLIT LOCK WASHER 1 2 SPLIT LOCK WASHER 3 4 SPLIT LOCK WASHER LIMIT COLLAR ELECTRICAL ENCLOSURE POWER CABLE MOTOR CABLE USED ON BG790 50 11 BG790 50 21 BG790 50 81 30 BG790 50 23 BG790 50 43 BG790 50 83 BG790 50 53 ALL 115VAC 10 MODELS ALL 208 230VAC 10 MODELS BG790 50 21 BG790 50 11 Doc 01 G0674 Rev E 01 G1014 Wiring Diagram 31 WIRING DIAGRAM GN MOTOR CONNECTION SAME gt n AS INCOMING POWER FOR BG770 INTERCHANGE GREEN AND RED WIRES W W 1 PHASE 110 INCOMING LINE SEE NOTE 3 115V MOTOR CONNECTION 115V ONLY I 4 3 1 2 BK O SEE NOTE 2 115V 115V ONLY ACCESSORIES 10 ZN ONLY L 230V MOTOR CONNECTION SEE NOTE 1 __ YEL BL 24V SEC AUTO MANUAL YEL M W OPEN OPEN LOOP PRESENCE GN W 4 J OPTIONAL AUNG 7 W CLOSE L S P W PUR BR iran W CLOSE L S P W KE PUR BR co 1 1 REMOVE JUMPER WHEN TIMER CLOSE IS USED 207 MS 2 REMOVE JUMPER TO CAUSE GATE GN R2 GN ARM TO CLOSE IMMEDIATELY UNLESS 5 HOLD OPEN LOOP IS ACTIVATED OR OR OPEN L S NO 24V COIL IR OR CLOSE O
5. normally open output contact to connect to the gate If yours does not or if you are unsure of or unfamiliar with these terms consult the supplier of the device or a qualified gate installer CONTROL CONNECTION TURN OFF POWER and connect the two output terminals or wires of the access control device to the terminals 1 and 3 on the control wiring terminal strip Use a wiring method that will provide permanent durable and weatherproof connection between the gate and the access device Doc 01 G0674 Rev E Operating Instructions 21 Operating Instructions Electrical Operation The BG770 and BG790 barrier gate operators are designed to provide years Of trouble free operation The gate may be operated by means of the two button control station or by other means if provided ON OFF POWER SWITCH The gate is provided with an ON OFF power switch To shut power off remove the access cover and move the toggle switch on the right side of the main electrical cabinet to the OFF position OVERLOAD PROTECTION The motor is protected by either a manual reset Single Phase unit or automatic reset 3 phase unit thermal overload protector The overload protector will trip when the motor temperature is too hot DO NOT ATTEMPT TO BYPASS THIS UNIT If the overload trips the gate could start by itself when the overload is reset either manual or automatic Exercise caution when resetting the overload On one phase units the reset button i
6. not supplied as shown in Figure 4 The L bolts should protrude 1 1 2 inches above the pad Pour concrete insuring that the pad is level and above the ground line Allow the concrete to set at least two days before installing gate Housing flange provides clearance for 1 2 L Bolts 14 1 2 x 12 on Conduit Entry Areas centers typ 4 plcs 14 1 2 Arm 1 2 Figure 4 Concrete Pad Layout Doc 01 G0674 Rev E Installation 12 Step 2 Arm Fabrication MODEL BG770 SINGLE ARM If you are making the arm yourself refer to Figure 5 and its suggestions for the single arm design 1 Drill four 1 2 diameter holes using the arm clamp as a template Tapering the wood as shown helps reduce the weight and allows you to reduce any warping common with long lengths of lumber 2 Finish arm with exterior grade paint and stripe with paint or adhesive backed tape as required Length as Needed up to 12 feet va Material 6 x 1 Pine or Redwood 01 G0674F7 Figure 5 MODEL BG790 WISHBONE ARM A twenty four foot wishbone arm is supplied as standard with every BG790 gate If a shorter arm is desired the extension may be shortened See Figure 6 The maximum arm extension is 8 feet for a total arm length of 24 feet 1 Cut to desired length 2 Finish with an exterior grade paint and stripe with paint or adhesive backed tape as required Up to 8 feet Arm Extension Material 4 x1
7. 24 i n eee 3C If 3a and 3b check out O K then manually disconnect the operator from the gate Very carefully using a screwdriver with an insulated handle press down on the open side of the contactor Then do the same to the close side of the contactor Did the operator run in both directions If it did the problem may be in the low voltage control circuit It if did not then the problem is either in the contactor or the motor 3D If the contactor is suspected to be causing the problem first carefully check all wiring connections at the contacts see Figure 15 Disconnect Power Using a V O M take continuity readings across the contacts of the contactor Remove wires from one side of the contactor Place one probe on 1 and the other on 2 You should get NO continuity now press down on the contactor you should get a continuity reading Repeat this on all of the contactor s contact points If the problem is thought to be the motor it is recommended that it be replaced It is possible that the thermal overload inside the motor has overheated Wait approximately 15 minutes then try running unit A NOTE Some motors have the overload built into the motor itself while other units have a separate overload in the controller Model BG770 uses a manual reset overload 4 Low Voltage Circu
8. E General Product Information 4 General Product Information Specifications Specifications are for both model BG770 and model BG790 unless otherwise noted POWER MODEL BG770 Line voltage is designated by third suffix of gate part number For amp draw see motor nameplate 11 115VAC 1 Phase 60Hz 21 230VAC 1 Phase 60Hz 81 208VAC 1 Phase 60Hz TYPICAL INSTALLATION 83 208VAC 3 Phase 60Hz 23 230VAC 3 Phase 60Hz 43 460VAC 3 Phase 60Hz 53 5 5VAC Phase 60Hz MOTOR Squirrel cage induction type 3 phase or capacitor start induction type 1 phase continuous duty 1725 rae RPM Horsepower is designated by second suffix of operator part number DIMENSIONS 50 1 2 Horsepower Figure 1 OVERLOAD PROTECTION Automatic reset 3 phase operators or manual reset MODEL BG790 1 phase operators thermal overload ELECTRICAL BOX NEMA 1 general purpose painted steel enclosure contains all motor control equipment Enclosure removable from operator TYPICAL CONTROL CIRCUIT INSTALLATION Class Il 24VAC LIMIT SWITCHES oe Adjustable driven limit switches operate in class l circuit Not affected by removal of motor POWER ON OFF SWTICH Enclosed toggle switch HP rated Up to 24 ft DIMENSIONS Figure 2 Doc 01 G0674 Rev E General Product
9. Information 5 OPERATION Prewired terminal strip accepts field connection of any access control device with normally open N O output contact most access control equipment and when required a separate OPEN CLOSE pushbutton supplied Plug in connectors are included for addition of a loop detector to open and or a loop detector to hold open not supplied Activation of access device open button or loop detector to open will raise gate Gate will lower automatically unless hold open loop detector is activated or unless CLOSE button wiring has been made in which case gate will remain open until CLOSE button is pushed An optional timer will extend the time that the gate remains open AUTO MANUAL switch holds arm in vertical position SPEED REDUCTION Wormgear in oil bath 60 1 ARM TYPE MODEL BG770 One piece type to 12 feet MODEL BG790 Counterweighted wishbone type to 24 feet ARM SPEED MODEL BG770 Opens in 4 seconds MODEL BG790 Opens in 11 seconds LUBRICATION Permanently lubricated bearings in motor Low temperature gear oil normally never needs replacement Gear oil is Mobil SHC 630 or equivalent MOUNTING Pad mount ENCLOSURE Weatherproof heavy gauge pregalvanized steel powdercoat finish top and side access covers with key lock Doc 01 G0674 Rev E Safety Instructions 6 Safety Instructions LS To reduce the risk of injury or death it is important to read all safety instructions These safety
10. gate control circuit To do this connect the radio receiver power wires to Terminals 3 and 6 on the control terminal strip If the receiver requires 115 volts AC or other power you will need a separate power source A standard residential door radio receiver has a three wire connection marked 1 2 3 If you have this type you may connect to operator terminals R3 R1 and R6 The transmitter button will open the gate if it is fully closed CONTROL If you have a standard residential 3 wire receiver and made the power connection described on page 19 you are finished with the radio connections If you want to use a radio control such as a single button you must order an optional kit P N 90 PGR Doc 01 G0674 RevE Installation 20 Card Readers Keypads or other Almost all types of access control devices may be connected to models BG770 and BG790 More than one device may be connected in parallel All devices connected according to the instructions below will open the gate and reverse the gate if it is closing MOUNTING LOCATION Mount or install the access control device within sight of the gate and according to the instructions supplied with the device Some devices require their own power supply Do not use the 24 volt power in the gate to supply other devices Use either direct line voltage 115V or 230V or other external power source as required by the particular device A NOTE Most access control devices have an isolated
11. instructions have been prepared by LiftMaster the manufacturer of the barrier gate As the manufacturer of only part of the total barrier gate system we do not know what type of controls or safety equipment that has been selected as part of your system An automatic vehicular gate arm is a large heavy object that moves with the help of an electric motor A moving gate arm can cause serious injury or death Your safety and the safety of others depends on you reading understanding and following through on the safety instructions in this manual It is important that both the installer and end users are aware of the hazards of your specific system lf you have any questions or doubts about the safety of your system or if you do not completely understand everything in this manual contact LiftMaster Before Installation I Installation of this barrier gate must be done by a qualified installer 3 Check to make sure that the available power supply to be connected to the operator is of the same voltage phase frequency and wattage as indicated on the nameplate of the operator 3 Installation and wiring must be in compliance with local building and electrical codes O Itis strongly recommended that you use safety equipment with this barrier gate operator There are many types of safety devices available sensing edges photo electric controls motion detectors and vehicle detectors are some of the more common types Audible and or visible
12. months eM Aaron 1 3 6 External safety systems Check for proper operation Gate caution signs Make sure they are present Drive chain see notes Check for excessive slack and lubricate Sprockets 8 pulleys Check for set screw tightness Gate inspect for wear or damage E Accessories Check all for proper operation Electrical inspect all wire connections Frame bolts Check f r tightness x Total unit Inspect for wear or damage 919Iduuo Table 5 CAUTION When servicing always disconnect operator from electrical power supply NOTES Inspection and service should always be E Severe or high cycle usage will require performed anytime a malfunction is more frequent maintenance checks It is suggested that while you are at the E Limit switches may have to be reset after site take some voltage readings of the any major drive chain adjustments operator Using a VOM double check the incoming voltage to the operator to make sure it is within ten percent of the operator s rating BG790 If lubricating chain use only a proper chain lub spray or a lightweight motor oil Never use grease or silicone spray While you are at the site now would be a D good time to let the owner or manager W When servicing please do some house know about any new items available or ni of the mam
13. not using automatic controls to control the gate the two button station may be connected as shown on the wiring diagram supplied with the gate to control the gate manually However the AUTO MANUAL switch should be kept in the AUTO position IMPORTANT NOTE Use 16 gauge wire or larger for all control wiring connections If the control wire is too small damage to the operator components may result The control station must be mounted in a location adjacent to and within clear sight of the gate If you will mount the control station outdoors replace the standard station supplied with the operator with a weatherproof station The BG770 and BG790 barrier gates will interface with almost all types of commonly used control stations radio controls and access control equipment Refer to the wiring diagram for connection of these devices If you are using a loop detector to open and or hold open and close mounting space and plug in harnesses are provided in the electrical cabinet for installation of optional factory supplied detectors You may also use other detectors Refer to the Optional Accessories section on page 19 When all wiring connections are complete mount the electrical enclosure to the shelf housing shelf MODEL BG770 Hang electrical enclosure on the two screws provided on the front of the shelf in the housing MODEL BG790 Hang electrical enclosure on the two screws provided on the cross angle under shelf in the housing Doc 0
14. power before working inside gate enclosure Vehicle Detectors Almost all types of vehicle detectors may be used in conjunction with both model BG770 and BG790 More than one detector may be connected to the gate and may be mounted inside of the cabinet Connect the detector s according to the instructions on the wiring diagrams supplied with the gate and with the detector itself FACTORY SUPPLIED PLUG IN DETECTORS LiftMaster P N 71 416 7NH 24V Please note Previous models used 115V detectors P N 71 416 3NH OPEN LOOP DETECTOR 1 Snap the detector onto one set of the four board mount standoffs located on the inside of the electrical cabinet Plug the harness into the connector marked OPEN 2 Connect the two loop wires to terminals P1 and P2 as shown on the wiring diagram HOLD OPEN LOOP DETECTOR 1 Snap the detector onto one set of the four board mount standoffs located on the inside of the electrical cabinet Plug the harness into the connector marked HOLD OPEN 2 Connect the loop wires to terminals P3 and P4 as shown on the wiring diagram Radio Controls All types of standard radio controls may be used in conjunction with model BG770 and BG790 If the receiver is mounted inside of the gate enclosure a commercial coaxial antenna should be used and extended through the side of the cabinet POWER CONNECTION All radio receivers require a power supply If the receiver requires 24 volts AC you may power the unit from the
15. power supply Also make sure that the operator was ordered with the proper voltage and phase Another item to check is the wire run from the power supply to the operator Double check the gauge of the wire versus the distance 1B If the voltage reading is from 1A then take the same voltage reading with the operator running If voltage drops below the minimum with this reading then there could be an excessive current draw somewhere or a wire AWG is too small 1C In some cases power drops can occur at only specific times during the day or night This can be caused by increased power demands in a general area at a specific time particularly areas undergoing rapid growth Doc 01 G0674 RevE Troubleshooting 23 2 Accessories Add on accessories can create many of the problems that are credited to the operator Many applications have more than one accessory item attached to the operator and some of these items even draw their power from the operator some of the symptoms that can show up because of accessories The operator won t close M The operator will not run E The operator won t open The operator begins to run then stops or reverses 2A Whenever the problem is thought to be an accessory and there are more than one connected to the operator always disconnect one accessory at a time and then test the system This will hopefully isolate which item is causing the problem 2B If an accessory item
16. warning devices are recommended when automatic controls are used in the gate operating system If you need advice regarding the type of safety equipment that should be used on your application or wish to purchase such equipment contact the supplier of the barrier gate or contact LiftMaster Without safety equipment the gate could cause serious injury or death Carefully plan the location of barrier gate control equipment Do not locate controls in places where children will be able to reach or play with them Be sure the person operating the controls can see the full area of movement of the gate arm from the point of operation O Do not place hands or fingers in or near the barrier gate unless power is off Moving chains pulleys or belts can catch clothing or fingers and cause severe injury 3 Always disconnect power and lock out whenever installing or servicing the barrier gate O If the barrier gate utilizes any automatic means of operation such as automatic timed closings post warning signs that are clearly visible to persons in the area warning of the particular hazards of the system Doc 01 G0674 Rev E Safety Instructions After Installation Be sure that the operator controls and safety devices have been tested and are functioning properly J Review the operation of the gate and safety equipment with the owner or end user Be sure that the end user is aware of all safety instructions and hazards of the opera
17. 1 G0674 Rev E Installation 14 Step 4 Arm Attachment For easier access during installation the top cover of the unit may be opened by removing the two wing nuts from underneath inside the cabinet WARNING When following the procedure below the motor belt will turn and the drive shaft will move during some of the steps Keep hands and tools out of the gate cabinet and away from the belt and drive shaft or serious injury may result Be sure to disconnect power while Installing the arm attachment MODEL BG770 STANDARD ARM Attach arm to the arm hub flange as shown in Figure 7 Hub Flange Hex Bolt a i 1 213 x 2 114 gt Lock Washer amp 1 2 13 Hex Nut 01 G0674F9 Figure 7 MODEL BG770 OPTIONAL ARM Attach arm to the arm hub flange as shown in Figure 8 Hex Nut 4 Hex Bolts See DETAIL A Threaded Rod Flatwasher Extension A nm gt Threaded Spacer Hex Bolt Flatwasher Flatwasher Allenhead Screw DETAIL A i3 Flatwasher Lift Arm See DETAIL B Hex Bolt Hex Bolt 2 Flatwashers 2 Flatwashers Hex Nut DETAIL B 01 G0674F 10 Figure 8 Doc 01 G0674 RevE Installation 15 BG790 WISHBONE COUNTERWEIGHTED ARM Attach left and right arms to the arm hub flanges as shown and described below 1 Bolt counterweights to ends of arms clamps as shown Use Caution lifting 57Ib weights 2 Bend and fasten the two arms together as shown in Figure 10 lf an extension arm is required
18. EN LOOP 2 ADD JUMPER FROM TERMINAL 8 TO 9 WHENEVER CLOSE BUTTON IS USED DO NOT USE WITH HOLD OPEN LOOP 3 115V UTILITY OUTLET 4 AMP MAX PROVIDED ON 115V MODELS ONLY 4 SEE REVERSE SIDE FOR INTERNAL OPERATOR WIRING 5 DO NOT CONNECT INPUT POWER LINES TO L1 amp L2 TERMINALS POWER LINES MUST BE CONNECTED TO THE POWER SWITCH DRAWING NO 01 G1014 Doc 01 G0674 RevE
19. N N BG770 Drawing and Parts List STANDARD PARTS DESCRIPTION KEY SWITCH 3 POLE CONTACTOR DIN RAIL LOWER CRANK UPPER CRANK CRANK LINK GATE ARM HUB REDUCER SHIM TAN BARRIER GATE ENCLOSUR GATE BRACKET SWITCH BRACKET TAN TOP COVER TAN ACCESS COVER ELECTRICAL PANEL ELEC PANEL MOUNT BRACKET N A SHAFT 4 BOLT FLANGE FEMALE ROD END FEMALE ROD END METAL GASKET RUBBER GROMMET V BELT 8 PULLEY 2 PULLEY TRANSFORMER SPDT LIMIT SWITCH ROCKER SWITCH TOGGLE OUTLET 24VAC DPDT RELAY 3 PDT 24V RELAY SWITCH BOX DUPLEX OUTLET COVER 1 32 x 1 8 SPACER NYLON SENSOR SPACER BARRIER GATE GEAR REDUCER 10 POS TERMINATION BLOCK 8 POSITION TERMINAL BLOCK SINGLE ARM OPTIONAL 115V CONTROL BOX 6 32 TINNERMAN NUT FAILSAFE BOARD STAND OFF m PARTS DESIGNATED N ARE NOT SHOWN ON DRAWING PARTS HAVING ONE OR MORE X IN THE PART NO VARY FROM MODEL TO MODEL SEE VARIABLE PARTS BELOW VARIABLE PARTS VARIABLE DESCRIPTION 20 XXXX 25 XXXX N A N A N A N A Table 6 PART NO QTY 1 2 1 1 1 82 NH31 06 N 84 JH 76 84 JH 76L 91 G0128 N 1 28 DESCRIPTION 1 4 x 1 4 x 1 1 4 KEY 3 16 x 3 16 X 3 4 KEY 3 4 FLATWASHER ACCESS PANEL LOCK 1 2 x 1 2 x 1 3 4 KEY 1 2 x 1 2 x 1 3 8 KEY SHOCK MOUNT 6 32 x 3 8 SELF TAPPING SCREW 5 16 18 x 2 1 2 CARRIAGE BOLT 1 4 20 x 1 2 HEX HEAD BOLT 1 4 20 x 1 1 4 HEX BOLT 5 16 18 X 1 HEX HEAD BOLT 1 2 13
20. Pine or Redwood 01 G0674F8 Figure 6 Doc 01 G0674 Rev E Installation 13 Step 3 Wiring Connections Locate the electrical enclosure inside the cabinet The enclosure shipped loose may be removed from the cabinet to help in the connections described below When all connections are complete hang the enclosure as described in step 7 1 2 WARNING Consult local electrical codes for permanent wiring requirements at you installation site Open the cover of the electrical enclosure Refer to the wiring diagram supplied inside for all electrical connections Be sure that power supply is of the correct voltage phase frequency and amperage to supply operator Refer to the operator nameplate on electrical cabinet cover CAUTION Do not turn on electrical power until you have carefully read the Limit Switch Adjustments section on page 18 Also this unit must be properly grounded A ground screw is supplied in the switch box for connection of the power supply ground wire Failure to properly ground this unit could result in electrical shock and serious injury Connect power supply wires to the ON OFF power switch as shown on the operator wiring diagram and Figure 3 see page 9 Do Not connect power at control panel L1 L2 L3 Route wires away from belt and limit switches A two button control station OPEN CLOSE is provided as standard equipment with every BG770 and BG790 barrier gate If you are
21. RAWING NUMBER LiftMaster 01 G1014 DATE REVISION ECN 08 28 00 D 9 9 02 02 0490 Doc 01 G0674 Rev E P ROFES SIO NAL 01 G1014 Field Wiring Diagram 32 FIELD WIRING IT IS IMPORTANT TO READ ALL SAFETY RULES INCLUDED IN THE INSTALLATION MANUAL BEFORE BEGINNING INSTALLATION FAILURE TO COMPLY WITH THE SAFETY INSTRUCTIONS MAY RESULT IN SERIOUS PERSONAL INJURY OR PROPERTY DAMAGE CONTROL WIRING LINE VOLTAGE SUPPLY i SEE NOTE 1 SEE NOTE 2 SENSING EDGE O OPEN BUTTON OR OTHER OPEN CONTROL CLOSE BUTTON SEE NOTE 2 ELECTRICAL CABINET 4h WARNING 115V HOLD OPEN SEE NOTE 5 ACEESSONIES a we INCOMING SEE NOTE 5 LINE LOOP WIRE CONNECTIONS FOR FACTORY SUPPLIED PLUG IN DETECTORS ONLY 1 PHASE LOOP DETECTORS BY OTHERS RADIO CONTROL CONNECTIONS FOR LOOP DETECTORS CONNECTIONS FOR STANDARD NOT SUPPLIED BY THE FACTORY 3 WIRE 24 VAC RADIO CONTROL Lil PRESENCE CONTACT OF PRESENCE CONTACT OF RECEIVER LOOP TO OPEN LOOP TO HOLD OPEN LOOP WIRES AND POWER FOR LOOP DETECTORS RADIO CONTROL WILL OPEN GATE SHOULD BE DIRECTLY WIRED TO DETECTOR ITSELPF AND REVERSE IF CLOSING IT WILL REFER TO INSTRUCTIONS ACCOMPANYING DETECTOR NOT STOP OR CLOSE THE GATE 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 IF THIS JUMPER IS NOT REMOVED ARM WILL REMAIN OPEN UNTIL A VEHICLE ENTERS AND EXITS THE HOLD OP
22. UALS Table 2 Verify that the following parts are included with the standard unit QUANTITY NIBIBINIS SAKA QUANTITY 5 olo amp NII DINNPS NSN Check that the nameplate data inside service cover accurately matches the operator that Doc 01 G0674 Rev E Preparing the Installation 9 Preparing the Site 1 Be sure that selected gate location has required clearance for arm movement and counterweights on model BG790 Refer to the dimensional drawings Figure 1 and Figure 2 on page 4 2 electrical power to the site according to local electrical codes See Table 3 below for correct wire size and length of run see also Figure 3 If the wire gauge is too high wire too small or the run is too long the gate may not run properly or may not run at all Damage to components may result IMPORTANT NOTE Be sure that the available power is the proper voltage phase A frequency and amperage to supply the gate Refer to gate nameplate located inside the service cover 3 Select locations for control equipment and run any control wiring that may be needed such as loop wires card readers ticket spitters pushbuttons etc WIRE SIZING CHART SINGLE PHASE THREE PHASE 115VAC 230VAC 230 VAC 460 VAC 575VAC Maximum Length of Wire Run in Feet 6 fo 3 100 4 750 14 225 35 550 8 450 1 925 3 000 8 975 22 425 1 225 1 900 5 650 14 075 175 715 1 175 3 525 8 825 Table 3 No
23. ana the don any safety items that could and should be around the operator Pick up any debris in added to Ihe site the area Clean the operator if needed LIMITED BEARING LUBRICATION The barrier gates require very little in the way of maintenance Motor and shaft bearing normally should not require lubrication The gear oil in the gear reducer is sealed in Unless a severe problem causes a seal to break it should never need replacement If gear oil is required use Mobilube C SAE140 or equivalent GREASE TURNBUCKLE Periodically grease the ball ends of the turnbuckle depending on the gate s frequency of use Doc 01 G0674 Rev E BG770 Drawing and Parts List 2 BG770 Drawing and Parts List BG770 Exploded View 10 8007 M lt lt 7 lt 85 FW 50 P 31 2712 85 LS 50 23 2017 i 31 10 17 11 8031 d 82 HN52 18 gt 65 1209 OPTIONAL gt Bp et Ng 80 1003 E Maa 10 8014 Ng T 9s NI p 12 8034 9 mY yv ud O lt 84 JH 76L b ng 91 G0122 g 2 i 17 2001 EM i 66 07 8005 84 JH 76 12 8033 10 8017 T Moy 52 4N75 28 20 XXXX X 28 3000 BOX IN 28 8003 COVER 23 8001 SWITCH amp Q 10 8001 T 80 8001 ba 25 XXXX 10 8014 10 8021 23 2761 01 G0674F19 OPERATOR ASSEMBLY Figure 16 Doc 01 G0674 RevE BG770 Parts List PART NO 02 102 N 31272___ 6 CO 80 1904
24. imit Switch Direction CLOSE Direction 01 G0674F 16 Figure 14 Limit Switch Layout CLOSE LIMIT SWITCH The CLOSE limit switch is preset at the factory If you rotated the pulley in section Arm and Turnbuckle Shaft Adjustments page 16 you will need to reset the cam on the CLOSE limit switch 1 Back out the set screw on the cam Then rotate the cam in the close direction so that the switch just clicks when the gate arm is in its lowest position see Figure 14 2 When the cam is in the desired position retighten the set screw This adjustment may have to be fine tuned after turning on power and running the unit for the first time AUXILIARY CLOSE LIMIT SWITCH The AUXILIARY CLOSE limit switch is preset at the factory If you made an adjustment to the CLOSE cam you will need to adjust the cam on the AUXILIARY CLOSE limit switch also 1 Position the AUXILIARY CLOSE cam slightly ahead of the CLOSE cam When the gate arm is on its down travel the AUXILIARY CLOSE switch will click just before the CLOSE switch 2 When the cam is in the desired position retighten the set screw OPEN LIMIT SWITCH The OPEN limit switch is preset the factory This setting may have to be fine tuned after running the unit for the first time 1 Loosen the OPEN cam and rotate in the open direction until the switch just clicks See Figure 14 2 Retighten the cam Doc 01 G0674 Rev E Optional Accessories 19 Optional Accessories A Turn off
25. is being used as an access control device used to open or close falls in the closed position or sends out a continuous signal The operator will hold the gate in one position until the signal from the accessory is removed 2C In some applications the gate may begin to move then either stop or stop and reverse within a couple of seconds This can be caused by an external obstruction device that has failed 2D If there are many accessories attached to and powered by the operator there may be too much current draw for the operator s control transformer This operator can only supply approximately 2 amps 24 vac Double check all accessories for their current requirements 3 Primary Voltage Circuit Use extreme caution when troubleshooting the primary voltage circuit There are five 5 items in this circuit that could be causing trouble and they are M Motor Contactor see Figure 15 CONTACTOR M Transformer Power Disconnect Switch Y 13 5 13 13 5 13 3A The first thing to check is the incoming power ls it there at the incoming side of the power disconnect switch 3B If there is power then check for it at the transformer primary terminals If there is voltage at the switch and 2 4 6 14 2 4 6 14 none at the transformer then you probably have a bad power disconnect and it should be replaced Check 01 G0674F 17 secondary output of transformer for 24VAC output Figure 15 Doc 01 G0674 Rev E Troubleshooting
26. it 4A The first thing to check is the circuit breaker 4B The secondary voltage must be between 22 and 30 vac This voltage can be checked at the circuit board at terminals 3 amp 6 4C The contactor coils receive 24vac To activate the motor in either the open or close direction There are two contactor coils one for open and one for close 4D The limit switches are S P D T single pole double throw These limit switches tell the operator to shut off at either the full open or full close position Doc 01 G0674 Rev E Troubleshooting ZO General Reference Information THE GATE Double check the gate and its related hardware Does the gate move freely Are there unprotected pinch points If yes then correct WIRING DIAGRAM Always reference the wiring diagram that was supplied with the operator Note that some of the accessory items may have their own wiring diagram If you cannot correct the problem or if you feel you will require technical assistance contact your local distributor or dealer If you do not have a distributor or dealer then contact us for technical assistance Please when calling for assistance make sure you have the gate operator model number voltage phase horsepower and a list of all accessories that are attached to the operator Doc 01 G0674 Rev E Required Maintenance Normal Usage 26 Required Maintenance Normal Usage Check at least once every of
27. ng and Parts List 1 80 207 36 1 82 CB31 26 N 82 75 26 E XH 82 RS10 20 N 82 5H10 18 N 84 JH 76 1 84 JH 76L N 84 RH 50 N 2 2 84 RH75 2 94 G0234 N QT _ 8 _ 8 6 8 6 6 1 18 _ 8 1 20 1050B 2 MOTOR BM 115 230V 1 2HP 20 XXXX 20 3050B 4E MOTOR 1 2 HP 208 230 460VAC 30 60hz 20 3050M 5 MOTOR 1 2 HP 575VAC 30 60hz 115VACRELAY 24 115 1 115VAC RELAY 24 230 5 208 230VAC RELAY 25 XXXX Table 7 25 2006 6A FUSE 25 2010 10A FUSE DESCRIPTION FAILSAFE BOARD STAND OFF 1 4 X 1 4 x 1 1 4 DISCONNECT KEY 3 16 x 3 16 x 1 3 4 KEY 3 4 FLATWASHER ACCESS PANEL LOCK 3 8 16 x 18 THREADED ROD 1 2 x 1 2 X 2 1 2 KEY 1 2 x 1 2 x 1 3 8 KEY 1 2 x 1 2 x 2 KEY 9 16 X 1 1 4 STUD SHOCK MOUNT 5 16 18 x 2 1 2 CARRIAGE BOLT 1 4 20 x 1 2 SCREW 1 4 20 x 1 1 4 SCREW 5 16 18 X 1 HEX HEAD BOLT 1 2 13 x 1 1 2 HEX HEAD BOLT 1 2 13 X 2 1 4 HEX HEAD BOLT 1 2 13 X 3 HEX HEAD BOLT 1 2 20 X 1 1 4 HEX HEAD BOLT 1 2 20 X 1 1 2 HEX HEAD BOLT 3 4 10 X 2 1 2 HEX HEAD BOLT 5 16 18 X 3 8 SET SCREW 3 8 16 X 3 8 CONE POINT SET SCREW 6 32 x 3 8 SELF TAPPING SCREW 6 32 X 3 SCREW 8 32 x 1 4 SELF TAPPING SCREW 8 32 x 5 8 SELF TAPPING SCREW 10 32 x 1 1 2 SCREW 10 32 X 1 1 4 SCREW 3 4 16 JAM NUT 3 4 16 LEFT HAND JAM NUT 1 2 13 HEX NUT 3 4 10 HEX NUT 10 32 SERRATED WASHER NUT 1 4 20 SERRATED FLANGE NUT
28. s located on the cover of the electrical cabinet If after resetting the overload continues to trip consult a qualified service company Manual Operation CAUTION Keep hands clear of moving parts The motor will start when AUTO MANUAL Switch is flipped to the MANUAL position ACCESS CONTROL EMERGENCY BYPASS To open the gate in an emergency remove the keyed access cover and open the electrical cabinet Flip the AUTO MANUAL switch to the MANUAL position The gate arm will remain in the up position and no other control device will have any effect until the switch is set back to the AUTO position Doc 01 G0674 RevE Troubleshooting 22 Troubleshooting When troubleshooting one of the first things to do is try to isolate the problem area The four 4 main areas to check out are Power Q Accessories Q Operator s Primary Voltage Operator s Low Voltage 1 Power Always use extreme caution Some possible symptoms of power problems include E The obvious one is the operator will not run The operator runs slow Circuit breakers or fuses keep tripping Motor overload keeps tripping Operator starts but then stops 1A Using a V O M take a voltage reading at the control transformer s primary terminals You should get a reading as follows Nominal Volt Table 4 If you get a reading that does not fall into the minimum maximum area then check out your main
29. sandwich the extension arm between the two halves of the wishbone arm before bolting together see Arm Fabrication starting on page 12 for extension arm preparation 3 Assemble the two 3 8 threaded rods to the arms for center Support as shown in Figure 10 4 Turn on power and test the gate WARNING Wishbone Arm Arc of Travel Ensure adequate clearance for travel of arm 01 G0674F 11 Figure 9 Be prepared for gate to start when you turn the power on Extension Arm 2 1 2 13 Hex Nut 2 1 2 Lockwashers NS a 2 1 2 Flatwashers NE See DEATAIL A 2 1 2 13 x 3 Bolts 2 1 2 Flatwashers Wishbone Arm 3 8 16 Nut 8 3 8 16 Nuts 3 8 Flatwasher 4 3 8 Lockwashers 8 3 8 Flatwashers 8 1 2 13 x 2 1 4 2 3 8 16 x 18 Hex Bolts Threaded Rods DETAIL A 8 1 2 13 Hex Nuts 8 1 2 Lockwashers 4 1 2 13 x 2 1 4 Counterweight 4 1 2 Flatwashers 4 1 2 Lockwashers 4 1 2 13 Hex Nuts 01 G0674F 12 Figure 10 Doc 01 G0674 Rev E Installation 16 Step 5 Arm and Turnbuckle Shaft Adjustments A CAUTION Turn off power before making any adjustments MODEL BG770 ADJUSTMENTS 1 If necessary rotate the pulley on the motor by hand until the crank arm on the gear reducer is perfectly aligned with the turnbuckle shaft see Figure 11 This is the lowest point of the arm travel and should be preset in this position at the fac
30. te Install Line Power Here Do Not Install Line Power in Panel shown below Power switch should be in the OFF position AUTO MANUAL switch should be in the AUTO position 01 G0674F5 Figure 3 Doc 01 G0674 Rev E Preparing the Installation 10 Preparing the Operator CAUTION Never open electrical cabinet cover unless power is off Electrical shock and serious injury could result Remove the wood base from the unit and discard Locate the keys for the access panel taped to the arm mounting flange and remove Open the side access panel and check the position of the power ON OFF switch Open the cover of the electrical cabinet and be sure that the AUTO MANUAL switch is in the AUTO position 5 OPTIONAL CONTROL EQUIPMENT If loop detectors radio controls or other control equipment will be added at the site do so now Refer to the instructions in this manual for installation of factory supplied optional open and or hold open loop detectors and for connection of factory supplied optional radio controls see Optional Accessories on page 19 c N Doc 01 G0674 Rev E Installation 11 Installation Step 1 Mounting 1 Layout the concrete pad as detailed in Figure 4 Be sure to locate electrical conduit inside the hatched 14 x 13 area 2 Excavate required area for pad and conduit Pad depth should be below the frost line or as required by local codes 3 Locate four 1 2 X 6 long L bolts
31. ting system O Inform the owner or end user that the barrier gate and all control and safety equipment should be maintained regularly The entire gate system should be checked at least once monthly to ensure that it is functioning properly With a safety edge installed the gate must reverse on contact with a rigid object If non contact sensors are connected to the Hold Open input and an object activates them the operator will stop a closing gate After adjusting the force or the limit of travel retest the gate operator Failure to adjust and retest the gate operator properly can increase the risk of injury or death J Leave all installation manuals instructions and safety information including this manual with the owner or end user J The entrance is for vehicles only Pedestrians must use separate entrance O Keep gates properly maintained Read the owner s manual Have a qualified service person make repairs to gate hardware Doc 01 G0674 Rev E Preparing the Installation 8 Preparing the Installation Unpack Carton 1 Unpack the carton checking for possible damage during shipping The arm when supplied is packed separately Damage claims must be filed with the freight carrier was ordered 3 MODEL BG770 PACKING LIST PART NUMBER DESCRIPTION 01 G0674 BG770 amp BG790 MANUALS Table 1 MODEL BG790 PACKING LIST PART NUMBER DESCRIPTION 65 LS 50 1 2 SPLIT LOCK WASHER 01 G0674 BG770 amp BG790 MAN
32. tory 2 If the arm is not level loosen the jam nuts at both ends of the turnbuckle shaft Insert screwdriver or other similar tool into the hole in the shaft Rotate the shaft either CW or CCW as necessary until the gate arm is in the desired horizontal position Retighten jam nuts Pivot Arm Jam Nut Turnbuckle Shaft Crank Arm 01 G0674F13 Figure 11 Model BG770 BG770 TURNBUCKLE SHAFT ALIGNMENT If necessary align turnbuckle shaft with center of crank arm for lowest point of travel of pivot arm see Figure 12 Figure 12 Doc 01 G0674 Rev E Installation 17 MODEL BG790 ADJUSTMENTS 1 If necessary rotate the pulley on the motor by hand until the upper and lower cranks are in a vertical position see Figure 13 This is the lowest point of travel and should be preset in this position at the factory 2 If the arm is not level loosen the jam nuts on both the top and bottom end of the turnbuckle shaft 3 Rotate the shaft either CW or CCW as necessary until the gate arm is in the desired horizontal position NOTE While the arm is raising the upper and lower cranks should travel toward the side access cover Turnbuckle Shaft Jam Nut Upper Crank Arm in closed position Lower Crank Arm in closed position See Note Pulley 01 G0674F15 Figure 13 Model BG790 Doc 01 G0674 Rev E Installation 18 Step 6 Limit Switch Adjustments Open Limit Switch Close Limit Switch Auxiliary Close L
33. x 2 1 4 HEX HEAD BOLT 1 2 20 x 1 1 4 HEX HEAD BOLT 3 4 10 x 3 HEX HEAD BOLT 5 16 18 x 3 8 SET SCREW 3 8 16 x 3 8 CONE POINT SET SCREW 6 32 X 3 PAN HEAD SLOTTED SCREW 8 32 x 1 4 SELF TAPPING SCREW 8 32 X 5 8 SELF TAPPING SCREW 5 16 18 x 3 4 SQUARE HEAD BOLT 3 4 10 x 2 1 2 SQUARE HEAD BOLT 10 32 x 1 1 2 SLOTTED SCREW 3 8 16 x 2 HEX HEAD BOLT 3 4 10 JAM NUT 3 4 16 JAM NUT 3 4 16 LEFT HAND JAM NUT 1 2 13 HEX NUT 3 4 10 HEX NUT 10 32 SERRATED WASHER HEAD NUT 1 4 20 SERRATED FLANGE NUT 5 16 18 SERRATED FLANGE LOCK NUT 3 8 16 SERRATED FLANGE LOCK NUT 1 4 20 WING NUT 5 16 FLATWASHER 3 8 FLATWASHER 1 2 FLATWASHER 1 2 SPLIT LOCKWASHER 3 4 SPLIT LOCKWASHER LIMIT COLLAR ELECTRICAL ENCLOSURE USED ON BG770 50 11 BG770 50 21 BG770 50 81 BG770 50 23 BG770 50 43 BG770 50 83 BG770 50 53 ALL 115VAC 10 MODELS ALL 208 230VAC 10 MODELS BG770 50 21 BG770 50 11 N A N A Doc 01 G0674 Rev E BG790 Drawing and Parts List 29 BG790 Drawing and Parts List BG790 Exploded View 82 NH38 06CP 82 HN75 26 e 07 8063 65 8056 12 8033 10 8055 07 8058 12 8032 o 3 28 3000 BOX 28 8003 COVER 84 JH 76 o 85 FWE50 23 8001 SWITCH 82 HN75 26 Dir 85 LS 50 F 82 52 20 NG I OA 12 8034 G TT 85 FW 50 25 a 23 2017 fe ie 82 HN52 18 10 8017 T ae 85 LS 50 Wa 85 FW 50 MG NG 120037 10 8026
Download Pdf Manuals
Related Search