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17

TO REDUCE THE RISK OF SEVERE INJURY OR

DEATH, READ AND FOLLOW ALL INSTRUCTIONS!

WARNING

IMPORTANT SAFETY INSTRUCTIONS

• 

Ensure authorized personnel only operate the door.  NEVER let children operate or play with

door controls.  Keep the Remote Control away from children. 

• 

ALWAYS keep a moving door in sight and keep people and objects away from the door area

until the door is completely closed.  NO ONE SHOULD CROSS THE PATH OF A MOVING

DOOR.

• 

TEST THE DOOR OPENER MONTHLY.  The door MUST reverse upon contact with a 1-1/2”

high object (or a 2 X 4 board laid flat) on the floor.  After adjusting the sensitivity or the limit

of travel, ALWAYS RETEST the Opener.  Failure to ADJUST THE OPENER PROPERLY may

result in SERIOUS INJURY OR DEATH. 

• 

If possible, USE THE MANUAL RELEASE only when the door is closed.  Use caution when

using the Release with the door open.  WEAK OR BROKEN SPRINGS MAY ALLOW THE

DOOR TO CLOSE RAPIDLY, CAUSING SEVERE INJURY OR DEATH.

• 

KEEP THE GARAGE DOOR PROPERLY BALANCED.  See the door owner's manual.  An

improperly balanced door MAY CAUSE SEVERE INJURY OR DEATH.  Have a QUALIFIED

SERVICE PERSON MAKE REPAIRS TO CABLES, SPRING ASSEMBLIES AND OTHER

HARDWARE.

• 

SAVE THIS INSTRUCTION MANUAL.

Adjustment #3:  Obstruction Sensing (Closing Direction) cont.

When the door comes into contact with a 2” x 4” laid flat on the garage floor and stops intends of reversing, move the close limit stop
away from the power head unit.  It is advised that you move the close limit stop one link at a time and run opener through another close
cycle, until the door reverses when it comes into contact with the 2” x 4”.

Adjustment #4:  Positive Mechanical Lock Adjustment

The garage door opener is designed with an automatic mechanical
locking system.  This lock secures the door in the fully closed
position.

To adjust, activate your opener and allow the door to go to its
fully closed position.  Loosen the two screws on the rail stop and
move it behind behind the chain latch assembly with a gap of 1/2”
between “stop” and “latch”.

E:

 ADJUSTMENTS / IMPORTANT  SAFETY INSTRUCTIONS

Checking the Travel Timer

Your opener is shipped with the jumper disconnected, allowing the operator to run continuously
for up to 29 seconds, then stop in the Open cycle or reverse in the closing cycle.
If your unit will run for only 17 seconds, the operator has mistakenly been shipped with the
jumper intact on the control board (perhaps the control board was replaced with a board that still
has the jumper installed).  On all doors having over 9 feet of travel, it is necessary to cut the run
timer jumper on the motor control board to allow the opener to run for 29 seconds.  Disconnect
the power from the opener before removing cover and cutting the jumper.  MAKE SURE YOU
DISCONNECT THE POWER BEFORE CUTTING THE JUMPER.  THE RUN TIMER WILL
NOT CHANGE IF THE JUMPER IS CUT WITH THE POWER CONNECTED.
This jumper is located under operator cover on the control board, as illustrated.

Rail “Stop”

“Latch”

Stop Limits

1/2”

110057-1

110057-2

Cut and
Separate

Summary of Contents for LT 50

Page 1: ...OR USE Serial Date Installed Your Dealer INSTALLER Place this manual in the plastic envelope provided and permanently attach to the wall near the pushbutton BY 110060 110044 INSTALLATION AND OWNER S M...

Page 2: ...Indicates a MECHANICAL hazard of INJURY OR DEATH Gives instructions to avoid the hazard CAUTION Indicates a MECHANICAL hazard of DAMAGE to your door door operator or equipment Gives instructions to a...

Page 3: ...on of the drive mechanism and manual operation of the door when desired as in the event of a power failure Page 19 Automatic Reconnection Once power is restored or automatic operation of the door is a...

Page 4: ...UTTON PUSHBUTTON WARNING LABEL SAFE FINISH SENSOR U BRACKET PHOTOSYSTEM SENSORS SENSOR L BRACKET DOOR ARM TUBE SECTION DOOR ARM ROD WALL BRACKET TRANSMITTER OPTIONAL POWER HEAD DRIVE RAIL ASSEMBLY DOO...

Page 5: ...guide tabs and the two rear bolt studs on the power head unit and place the rail chain assembly in place over the power head unit The power head drive unit limit lever protrudes up through the rail c...

Page 6: ...DOOR OPENERS WEAR SAFETY GOGGLES OR OTHER PROTECTIVE EYEWEAR INSTALL THE DOOR OPENER 8zFT OR MORE ABOVE THE FLOOR MOUNT THE MANUAL RELEASE 6 FT ABOVE THE FLOOR REINFORCE LIGHTWEIGHT FIBERGLASS ALUMINU...

Page 7: ...USE 10 FT OR 12 FT RAIL ASSEMBLY MATCH DOOR HEIGHT 104367 ONE PIECE DOOR NO TRACK JAMB HARDWARE ONE PIECE DOOR NO TRACK PIVOT HARDWARE DOOR HIGH ARC OF DOOR TRAVEL DOOR JAMB HARD WARE HIGH ARC OF DOO...

Page 8: ...LAG SCREWS AS NECESSARY NOT PROVIDED WARNING STEP 1 Mounting the Front Bracket Mark a vertical centerline on the header above the door By manually raising the door determine the high arc of the door...

Page 9: ...operation of the opener STEP 5 Return to the Rail Wall Mounting Bracket and securely tighten the bolt and nut that connect the Rail Front Idler bracket and the Wall Mounting Bracket Take care not to o...

Page 10: ...108385 STEP 9 Connecting The Electrical Power Consult the label on the rear panel of the Opener to determine its proper working voltage Normally it will be marked for 115V 60 cycle operation If it is...

Page 11: ...NOTE Leave about 12 of extra wire at each end Use a minimum 22 gauge solid trace wire one wire in set should be marked to identify it at each end for interconnect B Run a wire pair 20 or 22 gage soli...

Page 12: ...age Door Opener Keep a portable transmitter with you to control the garage door opener The red light on the receiver unit should now be on If not recheck that the mounting screws are tight then if nec...

Page 13: ...section two turns counterclockwise increasing the exposed length of the door rod to provide a cushion when the door is closed or encounters an obstruction Align connecting hole in the door arm with t...

Page 14: ...ectric system must be adjusted lower and the test repeated until the door responds properly to the 6 object If adjustments are needed refer to Step 13 If the unit still will not respond and fails this...

Page 15: ...he Transmitter in the car If the distance is still inadequate try bending the Antenna Wire to a different angle If the distance is still inadequate replace the Battery with a standard 9 Volt transisto...

Page 16: ...ine that the force is not excessive grasp the door handle or bottom edge during downward travel The opener should reverse to this force Do not stand under the door during this test If the handle is ha...

Page 17: ...he power head unit It is advised that you move the close limit stop one link at a time and run opener through another close cycle until the door reverses when it comes into contact with the 2 x 4 Adju...

Page 18: ...the door to BEGIN MOVING UPWARD MOVING DOWNWARD and an obstruction is encountered the door will STOP PAUSE AND REVERSE TO THE OPEN DIRECTION MOVING UPWARD and an obstruction is encountered the door w...

Page 19: ...leases are an available accessory and are recommended for garages without a service entrance OPTIONAL THREE FUNCTION WALL STATION When the Wall Station is connected to the operator per instructions su...

Page 20: ...Photosystem A pneumatic door edge will only work with the LT 50 operator if a Safe Finish Photosystem has been installed on the door and connected to the operator and the motor control board configur...

Page 21: ...BINDING WHEN RAISED OR LOWERED MANUALLY THE DOOR IS CORRECTLY BALANCED AND LUBRICATED ALL DOOR HARDWARE IS SECURE AND SOUND THE SENSITIVITY HAS BEEN ADJUSTED TO MINIMUM FORCE FOR THE APPLICATION 7 TH...

Page 22: ...force improperly adjusted 14 Down sensitivity force improperly adjusted 15 Bottom of door frozen to ground 16 Ice and snow built up under door 17 Floor risen or sunk from weather change 18 Someone in...

Page 23: ...Trolley Assembly 3 221020 Trolley Wing Foot 4 220961 Nylon Button 5 252109 Chain Latch Assembly 6 009224 3 pc Chain Master Link 7 009011 Chain specify length 8 160366 Limit Stop 9 220960 Rail Spacer B...

Page 24: ...ole option at no cost and returned pre paid Defective parts will be repaired or replaced with new or factory rebuilt parts at Allstar s sole option This limited warranty does not cover non defect dama...

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