Install A Sectional Garage Door Opener

  • Install A Sectional Garage Door Opener

Before automating a sectional garage door, it’s important to do research to ensure the opener matches the door. 

A Chamberlain sectional door opener suits doors less than 16 square metres in size with a curved track and maximum door height of 2.2 metres.

The opener must be securely suspended, so check out the wall and roof above the garage door. 

Sufficient structural supports need to be in place and if you have a ceiling, extra support brackets and fastenings may be required. 

If you don’t have an additional access door to the garage, you’ll need a quick-release accessory to allow manual entry in case of power failures or breakdown.

Before installation, lift the door halfway, then release it. It should stay in place if it’s balanced and supported by its springs. Raise and lower the door to check for binding, and call a technician to adjust it if necessary. 

You’ll need a 240V powerpoint located close by to plug in the opener. If not, call an electrician to install a new one, don’t run an extension cord.

Cyclone proofing  

New homes in cyclone areas are required by the building code to have wind-resistant garage doors. You can’t power them up DIY, but you can have an opener like the Merlin CyclonePro professionally installed. 

Install A Sectional Garage Door Opener 

Step 1. Install header bracket

Close the door and mark the vertical centreline of the door on the wall or ceiling above it. Fully open
the door and draw an intersecting horizontal line at least 50mm above the high point of the door. Centre the header bracket on the horizontal line and secure with the supplied screws.

Step 2. Assemble the rail

Separate the rail ends and add the centre pieces, sliding the rail connectors over the joins. Adjust the nut on the pulley assembly to tension the belt. Slide the rail bracket onto the power head and secure with brackets. Position the rail bracket against the header bracket and pin together.

Step 3. Secure the brackets

Prop the opener in position and open the door, centre the rail over the door and position a 50mm spacer in between. Bend the hanging brackets and secure to both the ceiling and rail brackets. Add a centre rail bracket in the mid position of the rail, securing to the ceiling with hanging straps.

Step 4. Attach door arm

Secure the door bracket to the frame of the door, then pull the manual release cord to disengage
the trolley. Slide the trolley 300mm from the header bracket, then install the curved arm onto the door bracket and connect with two bolts to the straight arm at a 20° angle.

Step 5. Program the settings

Plug in the opener and turn it on. Open the rear access panel to set the travel limits of the door using the program and arrow buttons. Run the door through an up and down cycle and use the buttons to set the force. If the door won’t open or shut properly, check it isn’t binding or sticking.

Step 6. Test safety reverse

Position a 40mm thick timber offcut flat on the floor and lower the door. If the door stops on the offcut, reprogram the settings and repeat the test. When the door reverses off it, remove the timber offcut and run the door opener through a full cycle.

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