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7

ENTRAPMENT PROTECTION ACCESSORIES
(OPTIONAL)

SENSING EDGES

All types of sensing edges with an isolated normally open (N.O.)
output are compatible with your operator. This includes
pneumatic and electric edges. If your door does not have a
bottom sensing edge and you wish to purchase one, contact the
supplier of your operator.

If not pre-installed by the door manufacturer, mount the sensing
edge on the door according to the instructions provided with the
edge. The sensing edge may be electrically connected by either
coiled cord or take-up reel. Refer to the steps below.

Important Notes:

a) Proceed with Limit Switch Adjustments before making any

sensing edge wiring connections to operator as described
below.

b) Electrician must hardwire the junction box to the operator

electrical box in accordance with local codes.

TAKE-UP REEL:

Take-up reel should be installed 12" (30.48 cm)

above the top of the door.

COIL CORD:

Connect operator end of coil cord to junction box

(not provided) fastened to the wall approximately halfway up the
door opening.

I N S T A L L A T I O N

To reduce the risk of SEVERE INJURY or DEATH, ALWAYS
install reversing sensors when the 3-button control station is
out of sight of door or ANY other control (automatic or manual)
is used. Reversing devices are recommended for ALL
installations.

ATTENTION

AVERTISSEMENT

AVERTISSEMENT

AVERTISSEMENT

WARNING

WARNING

CAUTION

WARNING

WARNING

PRECAUCIÓN

ADVERTENCIA

ADVERTENCIA

ADVERTENCIA

A D J U S T M E N T

To avoid SERIOUS PERSONAL INJURY or DEATH from
electrocution, disconnect electric power BEFORE manually
moving limit nuts.

ATTENTION

AVERTISSEMENT

AVERTISSEMENT

AVERTISSEMENT

WARNING

CAUTION

WARNING

WARNING

WARNING

PRECAUCIÓN

ADVERTENCIA

ADVERTENCIA

ADVERTENCIA

Sensor for Auxiliary Reversing System

OPEN

Limit Switch

Retaining Plate

CLOSE

Limit Switch

AUX. OPEN

Limit Switch

SAFETY

(Aux. Close) Limit Switch

LIMIT SWITCH ADJUSTMENT

NOTE: 

Make sure the limit nuts are positioned between the limit

switches before proceeding with adjustments.

1. Depress retaining plate to allow nut to spin freely. After

adjustment, release plate and move nut back and forth to
ensure it is fully seated in slot.

2. To 

increase

door travel, spin nut 

away

from limit switch. To

decrease

door travel, spin limit nut 

toward

limit switch.

3. Adjust open limit nut so that door will stop in open position

with the bottom of the door even with top of door opening.

4. Repeat steps 1 and 2 for close cycle. Adjust close limit nut so

that the limit switch is engaged as door fully seats at the floor.

Summary of Contents for MT

Page 1: ...DEL MT MEDIUM DUTY DOOR OPERATOR to locate a professional installing dealer in your area R PROFESSIONAL INSTALLATION ONLY A SAFETY DEVICE IS HIGHLY RECOMMENDED Serial located on electrical box cover Installation Date Wiring Type C2 Wiring F A C T O R Y S E T See page 11 for other wiring configurations 2 Y E A R W A R R A N T Y NOT FOR RESIDENTIAL USE O W N E R S M A N U A L MODEL MT MEDIUM DUTY DO...

Page 2: ...NTROL CONNECTION DIAGRAM 24 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 th...

Page 3: ...ORSEPOWER 1 2 Horsepower SPEED 1000 RPM VOLTAGE 115V 1 Phase 60Hz 230V 1 Phase 50Hz CURRENT See motor nameplate ELECTRICAL TRANSFORMER 24Vac CONTROL STATION NEMA 1 three button station OPEN CLOSE STOP WIRING TYPE C2 Factory Shipped Momentary contact to OPEN STOP constant pressure to CLOSE plus wiring for sensing device to reverse See page 11 for control wiring options LIMIT ADJUST Linear driven fu...

Page 4: ... powerhead so that the motor side of operator is in back away from door 2 Loosely install two 3 8 16 x 3 4 bolts and nuts in third hole from the end of the track 3 Align the track so that the bolts inserted in step 2 line up with the L Slots in the frame 4 Connect the track to the powerhead by fastening two 3 8 16 x 3 4 bolts and nuts through the frame and the end holes in track Tighten all four b...

Page 5: ... header bracket and fasten using the 3 8 dia x 6 40 long pivot shaft and cotterpins provided 3 Using the projected lines for location mount a suitable wood block or length of angle iron to the wall above the door opening Refer to the illustration below This will provide a mounting pad for the front header bracket of the operator If necessary reinforce the wall with suitable mounting brackets to en...

Page 6: ...ACHMENT 1 Fully close the door and move the trolley slider to within 2 5 08 cm of the front idler 2 Latch the straight door arm to the fixed roll pin in the trolley carriage Make sure the open side of notch on the arm faces the doorway 3 Attach the door bracket to the door arm using the 3 8 16 x 1 bolt and nylon locking nut provided Leave the nut and bolt loose enough to allow the two pieces to pi...

Page 7: ...TH ALWAYS install reversing sensors when the 3 button control station is out of sight of door or ANY other control automatic or manual is used Reversing devices are recommended for ALL installations ATTENTION AVERTISSEMENT WARNING WARNING CAUTION PRECAUCIÓN ADVERTENCIA A D J U S T M E N T To avoid SERIOUS PERSONAL INJURY or DEATH from electrocution disconnect electric power BEFORE manually moving ...

Page 8: ... Emergency Disconnect Emergency Disconnect Door Arm Door Arm Pull emergency release handle straight down Emergency disconnect will open Lift free end of door arm to trolley Pull emergency handle to allow arm to engage roll pin Release handle Emergency disconnect will close TO DISCONNECT DOOR FROM OPERATOR The door should be in the fully closed position if possible Pull down on the emergency releas...

Page 9: ...o allow the clutch to slip if the door is obstructed When the clutch is properly adjusted it should generally be possible to stop the door by hand during travel 4 Reinstall cotterpin A D J U S T M E N T To prevent possible SERIOUS INJURY or DEATH install reversing sensors when the 3 button control station is out of sight of the door or ANY other control automatic or manual is used Reversing device...

Page 10: ...he operator MUST NOT be performed until disconnecting the electrical power and locking out the power via the operator power switch Upon completion of maintenance the area MUST be cleared and secured at that time the unit may be returned to service Disconnect power at the fuse box BEFORE proceeding Operator MUST be properly grounded and connected in accordance with local electrical codes The operat...

Page 11: ...control station Generally a three button station OPEN CLOSE STOP is provided A two position key switch or control station OPEN CLOSE may be added or substituted when requested at the time of order Mount the control station near the door IMPORTANT Mount WARNING NOTICE beside or below the push button station Mount control station s within line of sight of door s W A R N I N G W A R N I N G TO PREVEN...

Page 12: ...ITIONAL ACCESS CONTROL EQUIPMENT Locate any additional access control equipment as desired but so that the door will be in clear sight of the person operating the equipment and connect to the terminal block in the electrical enclosure as shown on the FIELD WIRING CONNECTIONS diagram Any control with a normally N O isolated output contact may be connected in parallel with the OPEN button More than ...

Page 13: ...ARNING WARNING PRECAUCIÓN ADVERTENCIA ADVERTENCIA ADVERTENCIA Check at the intervals listed in the following chart HOW TO ORDER REPAIR PARTS OUR LARGE SERVICE ORGANIZATION SPANS AMERICA Installation and service information are available Call our TOLL FREE number 1 800 528 2806 www liftmaster com Use SAE 30 Oil Never use grease or silicone spray Do not lubricate motor Motor bearings are rated for c...

Page 14: ...N B BL OR 12 BL C OPTIONAL LIGHT BK 3 STOP L2 BK BK 4 R OPEN A W C CAPACITOR Y N O MAX 100W W C OPEN L S CLOSE L S P P CL OR R N O R OR OP N C C W W W 11 BR L1 MOTOR R Y 10VA PR1 24VAC SEC Y BK W O L BK A B W WIRE NUT R3 R2 3 4 2 1 5 GY Y R W RPM SENSOR BOARD N C C MOVE JUMPER WIRE TO TERMINAL 2 FOR MOMENTARY CONTACT ON CLOSE Y WIRE NUT CLOSE B RES BL Y S C H E M A T I C D I A G R A M F O R M T 5 ...

Page 15: ...OR N C N C C CLOSE P OR C W OPEN C 3 4 5 2 1 RADIO REC R RPM SENSOR XFMR AUX CLOSE AUX OPEN R BR OR P TO REVERSE MOTOR DIRECTION INTERCHANGE RED YELLOW WIRES C2 WIRING Constant Presssure to Close RED WIRE ON TERMINAL 12 Shipped from Factory B2 WIRING Momentary Contact to Close MOVE RED WIRE FROM TERMINAL 12 TO TERMINAL 2 CLOSE CONTROL WIRING OPTIONS Shipped from Factory See Close Control Wiring Op...

Page 16: ... 3 STOP L2 BK BK CLOSE B 4 R OPEN A W C CAPACITOR Y N O BL MAX 100W W C OPEN L S CLOSE L S P P CL OR R N O R OR OP N C C W W W 11 BR L1 MOTOR R Y 10VA PR1 24VAC SEC Y W O L BK A B W WIRE NUT R3 R2 3 4 2 5 GY W R Y A R S BOARD When Present N C C MOVE JUMPER WIRE TO TERMINAL 2 FOR MOMENTARY CONTACT ON CLOSE Y HAND CHAIN INTERLOCK SW WHEN PRESENT BRAKE SOLENOID CLOSE C OPEN C BL BK RES 1 S C H E M A ...

Page 17: ...C C BRAKE SOLENOID N O COM INTLK Y INTERLOCK SWITCH WHEN SUPPLIED WIRED N O HELD CLOSED TO REVERSE MOTOR DIRECTION INTERCHANGE RED YELLOW WIRES C2 WIRING Constant Presssure to Close RED WIRE ON TERMINAL 12 Shipped from Factory B2 WIRING Momentary Contact to Close MOVE RED WIRE FROM TERMINAL 12 TO TERMINAL 2 CLOSE CONTROL WIRING OPTIONS Shipped from Factory See Close Control Wiring Options Below W ...

Page 18: ...18 6 1 9 3 L4 L2 S5 S1 S2 S4 S3 L3 S4 S3 L1 L3 L7 L5 L2 10 L7 7 4 5 8 2 L6 11 E L E C T R I C A L B O X ...

Page 19: ...x Cover 1 3 23 10916 SPDT Interlock Switch Not on MT 1 4 29 2 Resistor 2 Ohm 1 5 42 10040 Terminal Assembly 3 Lug 1 6 42 110 10 Position Terminal Block 1 7 71 10345 RPM Sensor Board MT Only 1 8 74 10352 RPM Sensor Board Harness 1 9 See Var Comp Transformer 1 10 See Var Comp Relay 24V 2 11 See Var Comp Motor Capacitor 1 Not Shown 31 10350 Standoff K75 12489 MT Auto Reversal System ARS Logic VARIABL...

Page 20: ...BMT Only Brake Componets Model BMT Only B4 B7 O6 O4 O9 O5 O7 O2 O2 O3 O1 C3 O8 O8 O8 C13 C3 1 B10 B5 B9 B1 B3 B6 MTR B8 C1 C8 C5 C6 C7 C9 C10 C4 C11 C12 C2 B11 B2 3 H5 H8 H6 H4 H3 4 H2 H1 H7 C14 I L L U S T R A T E D P A R T S ...

Page 21: ...ring Clutch 1 3 1 2 HP 1 C8 39 10167 Clutch Disc 1 C9 84 SH 76 Castle Nut 3 4 16 1 C10 86 CP04 112 Cotterpin 1 8 x 1 3 4 Long 1 C11 86 RP08 102 Roll Pin 1 4 x 1 1 8 Long 1 C12 86 RP08 200 Roll Pin 1 4 x 2 Long 1 C13 87 P 075 Turac 3 4 Push on Fastener 2 C14 85 FW 75 Flatwasher 3 4 5 K72 12472 OUTPUT SHAFT KIT ITEM PART DESCRIPTION QTY O1 11 10319 Output Shaft 1 O2 12 10029 Bearing 3 4 I D 2 O3 15 ...

Page 22: ...22 O P E R A T O R N O T E S ...

Page 23: ...23 O P E R A T O R N O T E S ...

Page 24: ...ween terminals 3 and 4 3 Auxiliary control equipment may be any normally open two wire device such as pullswitch single button loop detector card key or such device 4 When adding accessories install them one at a time and test each one after it is added to ensure proper installation and operation with the Commercial Door Operator 5 Attention Electrician Use 16 gauge or heavier wire for all control...

Page 25: ... PARTS DEVANCO CANADA 19192 HAY ROAD UNIT Q SUMMERSTOWN ON K0C 2E0 TOLL FREE 855 931 3334 www devancocanada com WHEN ORDERING REPAIR PARTS PLEASE SUPPLY THE FOLLOWING INFORMATION 3 PART NUMBER 3 DESCRIPTION 3 MODEL NUMBER ...

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