Installing The Link Arm And Hanging Straps - E.T. Systems DC BLUE ADVANCED Installer's Instructions

ET DC BLUE ADVANCED INSTALLER 2012.025.12.05.2014
INSTALLING THE DOOR MOUNT BRACKET (See page 5 for component identification)
Mount the door mount bracket on the top edge of the door, where it is centred from side to side of the
door.
NB!!! The door mount bracket is one of the components that will take the majority of the load in a garage
door automation system. Extra care needs to be taken to ensure that the bracket is securely fastened.
Whatever the bracket is fastened to, must also withstand a force equal to the force of the door when the
spring balancing of the door is removed. For example if a balancing spring snaps.
INSTALLING THE LINK ARM AND HANGING STRAPS (See page 5 for component identification)
Install the front end of the drawbar in the wall mount bracket using the 90mm pivot pin and one of the
cotter pins. Raise the drawbar up and out of the way of the door. Install the link arm into both the
sledge/traveller and door mount bracket using the 25mm pivot pins and remaining two cotter pins.
Prepare and install the hanging straps so that when the door is in the full open position, the link arm lays
180⁰ to the door. Do not use the curved link arm extension in this type of installation. The diagram below
shows the final position of the drawbar when installed and examples of how to prepare the hanging
straps.
TESTING THE MECHANICAL DRIVE AND LINKAGE
It is now possible to test the mechanical movement of the door with the link arm attached and the
sledge/traveller engaged onto the chain drive. The movement of the door throughout its travel should be
approximately the same while pulling the chain around the drawbar, as it is when the chain is not
engaged.
If satisfied that the drawbar is not causing unnecessary drag or hindrance to the door movement, then go
ahead and attach the motor-head to the drawbar. (Page 11)
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