LIMIT CONTROLS
FORCE CONTROLS

CARE OF YOUR OPENER

LIMIT AND FORCE ADJUSTMENTS:

Weather conditions may cause some minor changes in door operation requiring some

re-adjustments, particularly

during the first year of operation.

Pages 23 and 24 refer to the limit and force adjustments. Only a screwdriver is required. Follow the instructions carefully.

Repeat the safety reverse test (Adjustment Step 3, page 25) after any adjustment of limits

THE REMOTE CONTROL BATTERY

To prevent possible SERIOUS INJURY or DEATH:

•NEVER allow small children near batteries.

•If battery is swallowed, immediately notify doctor. To reduce risk of fire, explosion or chemical burn:

•Replace ONLY with 3V2032 coin batteries.

•DO NOT recharge, disassemble, heat above 100° C (212° F) or incinerate.

or force.

MAINTENANCE SCHEDULE

Once a Month

• Manually operate door. If it is unbalanced or binding,

call a trained door systems technician.

The lithium battery should produce power for up to 5 years.

To replace battery, use the visor clip or screwdriver blade to pry open the case as shown. Insert battery positive side up (+).

Dispose of old battery properly.

Battery positive

side up (+)

• Check to be sure door opens and closes fully. Adjust

limits and/or force if necessary (see pages 23 and 24).

• Repeat the safety reverse test. Make any necessary

adjustments (see Adjustment Step 3).

Twice a Year

•Check chain tension. Disconnect trolley first. Adjust if necessary (see page 7).

Once a Year

•Oil door rollers, bearings and hinges. The opener does not require additional lubrication. Do not grease the door tracks.

Replace the battery with ONLY 3V2032 coin cell batteries.

NOTICE: To comply with FCC and or Industry Canada (IC) rules, adjustment or modifications of this receiver and/or transmitter are prohibited, except for changing the code setting or replacing the battery. THERE ARE NO OTHER USER SERVICEABLE PARTS.

Tested to Comply with FCC Standards FOR HOME OR OFFICE USE. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

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Chamberlain 3245M 1/3 HP, 3255-2M 1/2 HP, 3255M 1/2 HP Care of Your Opener, Once a Month, Twice a Year, Once a Year
Page 27 Page 29

3255M 1/2 HP, 3245M 1/3 HP, 3255-2M 1/2 HP specifications

The Chamberlain 3255-2M, 3245M, and 3255M garage door openers stand out in the market for their reliability and superior performance. Each model offers a unique combination of power and features, catering to different needs and preferences.

The Chamberlain 3255-2M is a robust 1/2 HP opener designed for heavy residential garage doors. Its powerful motor ensures smooth and efficient operation, making it ideal for doors weighing up to 7 feet high. This model incorporates the latest in opening technology, including a durable chain drive mechanism that provides strength and longevity. One of its significant features is the incorporated MyQ technology, enabling users to control their garage door remotely through a smartphone app. This innovative feature brings convenience and peace of mind, as homeowners can check the status of the door from anywhere.

Another excellent choice is the Chamberlain 3245M, a 1/3 HP model that offers a balance of performance and affordability. It is suitable for lighter doors, providing consistent and reliable opening and closing. The 3245M model also boasts a protective cover that enhances its durability against the elements. It operates quietly thanks to its direct drive system, making it an excellent option for garages attached to living spaces. Like the 3255-2M, this model is also equipped with MyQ technology, allowing users to monitor and control their garage door from their smartphones seamlessly.

Finally, the Chamberlain 3255M, another 1/2 HP opener, offers similar features to the 3255-2M but with a focus on belt drive technology. This model is built for quieter performance, making it ideal for homes where noise is a concern. The belt drive reduces vibrations and sound, ensuring a smoother user experience. This model also comes with a battery backup system, which provides added security during power outages.

All these models emphasize safety and security, featuring auto-reverse functionality that senses obstacles and prevents the door from closing on them. The Chamberlain garage door openers are also equipped with a rolling code technology that changes the access code each time the remote is used, enhancing security against unauthorized access.

In summary, the Chamberlain 3255-2M, 3245M, and 3255M garage door openers cater to a variety of needs with their powerful motors, innovative technologies, and user-friendly features. Their reliability and performance make them an excellent investment for any homeowner.
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