Liftmaster 423LM Three Channel High Memory Coaxial Receiver

!9#: Liftmaster 423LM Three Channel High Memory Coaxial Receiver

Brand : LiftMaster | Rate : | Price :
Post Date : Jan 28, 2012 06:12:08 | Usually ships in 1-2 business days

Features and Specifications: 18-35V AC/DC or 12V DC selectable power supply options. Security+ with rotating code technology - 390MHz. Use with up to 31 of any type transmitter in NORMAL security mode, including any combination of rolling code, billion code, or dip switch remotes. Easy programming. Open/close/stop functions for commercial operator applications. Receiver is compatible with Sears Craftsman, Lift-Master and Chamberlain. Antenna, bell wire and instructions included.

• 18-35V AC/DC or 12V DC selectable power supply options.
• Security+ with rotating code technology
• Use with up to 31 of any type transmitter in NORMAL security mode
• Easy to program
• Receiver is compatible with Sears Craftsman, Lift-Master and Chamberlain.

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A Review of the Most Popular Garage Door Openers

!9#: A Review of the Most Popular Garage Door Openers

Genie, Chamberlain, Sears, Wayne-Dalton, Linear, and Universal (SkyLink) make some of the best garage door openers on the market. The following product reviews should be useful for those in the market for a garage door opener.

The Genie® Company is one of the most well-known and trusted companies in the US. Founded in 1923 under the name of the Alliance Manufacturing company, Genie manufactures consumer, industrial as well as military products. The Genie® brand of garage door openers are very popular for their high power remote-controlled garage door opening systems.

Genie produces a wide range of garage door openers and the most popular brands from Genie are: the Excelerator, the Screw Drive and the Chain Glide. Other brands include the Alliance, the Blue Max, the Crusader, Python, Pro-Max, Lift-a-door, OverHead Door, Norelco, Code-Dodger and Intellicode.

Genie uses state-of-the-art technology in its garage door openers. The Intellicode® remote access security system changes the security code to one of billions of combinations each time the transmitter is used, thus making it one of the safest systems in the world. Its Sate-T-Beam(TM) infrared beam system can sense the presence of objects in the door's path and can thus prevent damage to equipment. Genie garage door openers can be installed on both single as well as double doors. They use ½ horsepower and can work on doors that are up to 8 feet high. Genie garage door openers open twice as fast as other garage door openers but close at normal speeds. They are very quiet, have a bright, wide-angle lighting and powerful motor design and can work in any weather conditions. Such advanced technologies make the Genie brand of garage door openers most popular in the world.

Chamberlain GmbH based in Saarwellingen, Germany is a principal supplier of residential garage door openers, commercial and residential gate operators, and remote controls in the world. The company has offices in France, England, the Netherlands, Poland, Slovak Republic and Singapore. Chamberlain products are available almost across the whole world.

Chamberlain offers garage door openers in commercial as well as residential varieties. Chamberlain®, Whisper Drive® and Power Drive® Garage Door Openers are the most popular brands from Chamberlain.

LiftMaster® is the most popular brand from Chamberlain. This range also includes the Liftmaster garage door opener remotes, replacement parts, mini transmitters, keychain remotes and other accessories. LiftMaster garage door openers are available in different drive and horsepower modes and are combined with a wide range of accessories and options. The LiftMaster range contains: the Estate Series, the Premium series and the Contractor series. These are available in the belt drive; screw drive as well as in chain drive models.

Chamberlain's Power Drive® and Whisper Drive® belong to the residential garage door opener category in the do-it-yourself range. The Elite(TM) range contains premier residential and commercial gate operators and access control systems. The Sentex® range is for secure residential and commercial garages.

Sears Holdings Corporation, parent of Kmart and Sears, Roebuck and Co., is the third largest broad line retailer in the US. Sears Holdings is a leading supplier of tools, lawn and garden, home electronics, and automotive repair and maintenance. It supplies the Craftsman range of garage door openers.

Craftsman supplies power tools, storage chests and cabinets, bench power tools, mechanics tools, power tool accessories, general hand tools, compressor tools, carpentry tools and home security and garage door openers and accessories. The Craftsman range of garage door openers consist of simple ½ hp garage door opener, ¾ hp garage door opener in chain drive models. Other products include the universal remote control conversion kit with 1 remote, the 10ft chain drive extension kit, the 10ft extension kit for garage door opener, the 8ft extension kit for garage door opener, the 8ft rail extension kit, the Remote control, 3-function security, keyless entry pad, plug-in light control for garage door opener, the wireless garage door monitor and the extension kit (screw drive).

Wayne Dalton, established in 1954, is the producer and supplier of the safest residential and commercial garage doors and garage door openers in the US. Wayne Dalton supplies two kinds of garage door openers: wall mount and ceiling mount. The wall mount openers, an exclusive product from Wayne Dalton, can be mounted on the wall beside the door. This helps to eliminate the chains, belts, screw drive and tract that usually clutter the garage ceiling. This model also helps to eliminate noise and vibration to a large extent.

The Linear Corporate is a major producer of security systems like garage door and garage door openers. Linear produces garage door openers accessories like the Linear Act 21 key chain transmitter, Linear DR3A Linear Moore-O-Matic gate or garage opener receiver, Linear DT2A gate or garage door opener replacement transmitter, Linear DTC Moore-O-Matic Delta 3 Remote (same as DTD or DT) gate or garage door opener replacement transmitter, Linear DTKP wireless keypad, Linear MDR Megacode System single channel receiver, Linear MDT-1 and MDT-2 Megacode gate or garage door openers, Linear MDTK wireless keypad model, Linear MT-1B channel visor block coded transmitter, Linear MT-2B channel visor block coded transmitter etc.

Linear also makes the Stanley range of garage door opener parts and accessories like Vemco, Quiet Glide, LightMaker, Home Innovative, Whistler, Popular Mechanics, SecureCode.

A Review of the Most Popular Garage Door Openers

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Arizona Door Doctor -- Garage door repair specialist

!9#: Arizona Door Doctor -- Garage door repair specialist

Arizona door doctor is Arizonas premier garage door repair specialists Call 24hrs a day 480-495-1555 www.azdoordoctor.com Garage door repair serving -- arizona phoenix glendale scottsdale peoria happy valley anthem cavecreek carefree mesa moon valley apache junction avondale awatukee chandler gilbert maricopa tolleson buckeye gilla bend suprise arrowhead goodyear sunlake lichfield sun city new river queen creek fountain hills az dr doctor . . liftmaster genie belt drive

Arizona Door Doctor -- Garage door repair specialist

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Liftmaster 41A4252-7D Logic Board

!9#:Liftmaster 41A4252-7D Logic Board

Brand : LiftMaster
Rate :
Price :
Post Date : Jan 09, 2012 20:39:06
Usually ships in 1-2 business days

Replacement Logic/Circuit board for standard Liftmaster operators (non code rolling). Not for Security+ systems. Also compatible with non Security+ systems from Chamberlain, Craftsman, Master Mechanic, Sears, Tru-Value and Wayne Dalton.

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How to Replace the Main Gear in a Garage Door Opener

!9#: How to Replace the Main Gear in a Garage Door Opener

It's 6:00 AM and you are leaving for work. You press the garage door opener wall button and hear a subtle hum from your electric motor but the door failed to move. If your garage doors springs are intact chances are you garage door openers main drive gear has failed. You can easily inspect your drive gears by unplugging your garage door opener and removing the metal cover. The main drive gear is made of a white plastic that typically is the weak link in the opener. Many things can cause this gear to fail. Some causes of wear are:

o Garage door out of balance (Springs broke or in need of adjustment)
o Chain to tight a
o Old age
o Excessive use or high cycle
o Factory defect or lack of grease at time of manufacture

Replacing the large white gear is a low cost, quick and easy do it yourself repair as long as you have a few simple hand tools and follow the safety precautions. These gears can be purchased online in a variety of levels of components.

Before you get started it is important for you to have a list of the few simple tools needed to accomplish this project:
o Hammer
o Half inch wrench or adjustable wrench or pliers
o 3/8" Socket or Nut Driver
o 1/4" Socket or Nut Driver
o 5/16" Socket or Nut Driver
o Flat Standard Screwdriver
o 5/32" Punch or similar

~WARNING ~
To prevent possible SERIOUS INJURY or even DEATH from electrocution, ALWAYS Disconnect the power cord from your garage door from the outlet before proceeding with any inspection or repair.

Step #1
Make sure your garage door opener is unplugged. This step insures that no one unintentionally attempts to open or close the garage door while you are working on it or you do not accidentally activate the door while servicing it.

Step #2
Disconnect the door from the outer trolley by manually pulling the red disconnect rope and manually close the garage door.

CAUTION
The Garage door MUST be in the fully closed position during all repairs and inspection.

Assuring that your garage door is closed will reassure that your door will not fall or make any movement that would cause injury or startle you. We recommend that once the door is closed that you clamp the door down using a vise grip or clamp above one of the rollers to prevent the door from being opened from the outside.

Step #3
Slacken the chain or belts tension by loosing the tension nut on the garage door opener trolley. Typically this is nut and can be adjusted with a ½" wrench.

Step #4
Remove the sprocket or belt pulley retainer cap. Usually this has a clip on the back if you press in it will release.

Step #5
I always recommend marking the position of the chain or belt to the sprocket prior to removing. This can easily be done with white out, tape or any other means. This step helps assure that your chain or belt gets reinstalled in the correct position and makes for quick and easy reference if needed later. Remove the chain or belt from the sprocket and then slide the inner trolley to the closed position until it engages the outer trolley. Place loose chain/belt on the end of the rail closest to the sprocket. I typically duct tape the chain to prevent it from falling to the floor and getting all twisted and dirty.

Step #6
It is now time to remove both end covers and the main housing. The end cover are each attached by three or four ¼" head screws that can be removed with a ¼" nut driver or socket. Be sure to unplug the wire to the circuit board.

Step #7
Remove the retaining clip and the drive gear for the limits. Also at this time remove the limit switch assembly by squeezing the sides just below the bracket by the drive gears. There is no need to disconnect the wires as it is ok to leave this limit assembly hang by the wires. Do not make any adjustments to the limit assembly screws, this will insure that there is minimal adjustment needed to the limits after you complete your repair and run your garage door opener.

Step #8
Now its time to remove the RPM sensor this can be easily done by unplugging the wire harness and remove the RPM sensor from the securing tabs.

Step #9
Disconnect the red, blue and white wires from the motor. It is important that you note where these wires go. The same color wires go to the same terminals on the capacitor red/red and blue/blue.

Step #10
Remove the four 5/16" hex head screw's that hold the motor assembly to the frame of the garage door opener. Be sure to put your hand under the motor before removing the last screw to prevent the motor from falling. Slide the motor assembly off the drive shaft and place in a safe place. (Not on top of the ladder for obvious reasons).

Step #11
Remove the three hex head screws holding the sprocket assembly to the main chassis using a 5/16" nut driver or socket. Now it is time to decide if you want to replace the main gear only or the entire sprocket or all chain drive models 1984 to present.

Step #12
Skip this step if you are replacing the entire gear and sprocket or pulley assembly. If you are going to replace the drive gear support the driveshaft on a block of wood and drive the lower roll pin/Tension pin out with a 5/32" punch. See photo example below.

Step #13
Remove and replace the worm gear. In most cases it is not necessary to replace the worm gear unless it shows signs of wear. If you wish to replace this gear remove the shaft collar with a 1/8" hex wrench. Please be sure to note the location of each of these components as you disassemble so you can re-install in proper order. When you receive your gear kit, you will find there are parts not used in your model this is because these kits are universal and work with many models of Sears, Craftsman, Wayne Dalton, Master Mechanic, Liftmaster, True Value and other brands of garage doors openers. Only replace the parts that are used on your garage door opener. Remove the 3 nuts that hold the motor to the frame and then remove the worm gear. Install the new worm gear making sure the roll pin is properly seated in the new gear. Re-install other components in reverse order. After you complete this assembly I recommend you lube the worm gear so you do not forget.

Step #14
Begin reassembly in reverse order. Be sure to thoroughly lube the main drive gear and that grease is on each and every tooth. Attach the gear and sprocket or pulley assembly to the main chassis with the three 5/16" head screws. Install the assembled motor frame to the chassis with the four 5/16" head screws and reattach the red, blue and white wires; now install the limit assembly and the limit drive gear making sure they mesh properly. You can now install the RPM sensor and reconnect wires. Install the metal cover and end panels, be sure to plug in the circuit board and reconnect photo eye and push button wires.

Step #15
Reconnect the power cord to the opener and cycle the opener until the sprocket completes a complete clockwise cycle. The trolley must be in the fully down position before installing the chain. Now you can remove the tape from the rail and reinstall the chain. The chain and sprocket reference mark should be close to lining up. Tighten the chain so that the chain is ½" above the base of the rail at midpoint for "T" style rails and ¼" for square tube rails. Secure the chain tightening lock nut.

WARNING
Note when adjusting and testing your garage door motor it is important
to make sure no one is in the path of the moving door.

CAUTION
It is important to know when testing your garage door opener it is possible to over cycle the motor
and have the motor temporarily overheat and stop operating.
To prevent this try and not operate the door opener more than 10 cycles
without giving it 5-10 minutes to cool off

Step #16
Now run the opener and test to see if the door opens to the correct position and closes to the correct position. If you need to make adjustments use the travel adjustments screws to make fine adjustments. I recommend only making slight adjustments ¼ turn or less at a time. For reference one full turn of the screw equals approx 2" of travel on ½ and ¼ HP models and 3" on ¾ HP models.

Step #17
Once you have your doors travel adjustment correct it is time to adjust the force. This is the pressure that it takes to assure your door opener will operate safely. The first step in this process is to check the down force. With the door open simply activate the garage door opener and when the door reaches the half way point grasp the door from the bottom and try and stop it. If the door is hard to stop or does not stop decrease the down force adjustment in small increments until it reverse upon reasonable force. If the door does not close and the light begins to blink increase the down force adjustment in small increments until you can check the reversal at half way. Adjusting the force does not guarantee that your operator will reverse on 1-1/2" object at the floor. For more information on adjusting the reversal at the floor see your owner's manual or call the manufacturer.

How to Replace the Main Gear in a Garage Door Opener

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LiftMaster Chamberlain 41A5021-9G-315 Garage Door Opener Circuit Board

!9# LiftMaster Chamberlain 41A5021-9G-315 Garage Door Opener Circuit Board

Rate : | Price : | Post Date : Nov 26, 2011 16:49:32
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Liftmaster 41A5021-9G-315 Logic Board

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!9# Liftmaster Chamberlain 379LM Biometric Fingerprint Reading Wireless Entry System.

Brand : LiftMaster | Rate : | Price :
Post Date : Nov 03, 2011 08:36:37 | N/A

Liftmaster Chamberlain 379LM Biometric Fingerprint Reading Wireless Entry System.

Liftmaster Chamberlain 379LM Biometric Fingerprint Reading Wireless Entry System.

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Liftmaster Chamberlain 379LM Biometric Fingerprint Reading Wireless Entry System.

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