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Need help?Do you have a question about the Sears 139.18203SR - 1/3 HP and is the answer not in the manual?
General| Horsepower | 1/3 HP |
|---|---|
| Type | Chain Drive |
| Max Door Height | 7 ft |
| Safety Sensors | Yes |
| Battery Backup | No |
| Safety Features | Automatic Reversal System |
| Warranty | 1 year |
Describes automatic light function and duration.
Manual operation during power failure or emergency.
Details about the opener's motor.
Up/down force adjustment and auto-reverse.
Trolley reconnection after manual release.
Setting and changing radio control codes.
Adjusting door travel limits via screws.
Transmitter with multiple buttons for opener and light.
Details on motor type, speed, voltage, and current.
Information on gear reduction, drive type, and travel.
Personal, electronic, and electrical safety aspects.
Overall size and weight of the opener unit.
Methods to activate the opener using transmitter or button.
How to disconnect and operate the door manually.
Prevents automatic trolley reconnection.
When the opener light turns on and off.
How the door moves when opener is activated or obstructed.
Controls interior/exterior lights via dimmer switch.
Controls interior lights via wall receptacle.
Standard transmitter with visor clip.
For low headroom, replaces top brackets/rollers.
Opens door from outside with a key.
Homeowner entry via code keypad.
Manual operation from outside for no service door.
Extends rail for taller doors.
Checking and setting limit and force adjustments.
Crucial test for door reversal on obstruction.
Checking and adjusting chain tension for proper operation.
Using transmitter and replacing 12-volt battery.
Checks for door balance, full travel, and safety reverse test.
Bi-annual chain check and annual lubrication.
Positioning and fastening header bracket for tracked doors.
Header bracket mounting for trackless one-piece doors.
Placing opener using a 2x4 for track systems.
Aligning opener height for trackless one-piece doors.
How to use the wall push button for open/close/stop.
Instructions for wiring outdoor key switch.
Connecting opener to mains power via permanent wiring.
Attaching bracket to sectional doors, including reinforcement.
Attaching bracket to one-piece doors.
Assembling and connecting door arms for sectional doors.
Connecting straight and curved arm sections for one-piece doors.
Adjusting UP limit for full door opening.
Adjusting DOWN limit for full door closing.
Joining the door arm to the trolley with a clevis pin.
Guide for adjusting travel limits based on door behavior.
Guide for adjusting UP and DOWN force settings.
Setting transmitter code switches to match receiver.
Matching receiver code switches to transmitter code.
Issues with wall button or transmitter not working.
Transmitter works, but wall button does not.
Problems with transmitter range and signal strength.
Door movement without activation, e.g., due to frequency interference.
Door failing to reach full open position.
Door failing to reach full closed position.
Door reversing during travel without obstruction.
Problems with the opener light not turning on or off.
Opener struggling or requiring maximum force to move the door.
Motor hums but opener fails to work, e.g., jammed trolley.
How to operate opener during power outages.
Normal chain sag and when adjustment is needed.
Addressing noise issues in living quarters.
Covers defects in workmanship for 90 days.
Replaces defective parts free for one year, labor extra.
Covers motor replacement parts for 1/2 HP (5 yrs) and 1/3 HP (3 yrs).
