FAAC 750 Standard Installation Manual
Also see for 450 MPS Control Panel: Installation manualInstallation manualInstallation instructions manualInstallation instructionsInstallation manual
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26Installing an Extension ArmSome gate installations do not meet the geometricalconstraints shown in Figure 2. In those situations, the750 Extension Arm option can be used along with the750 drive unit, power unit, and control panel to installan unobtrusive gate operator.Using the 750 Extension Arm means that you do nothave to permanently remove any leaf hinges, the gateleaf does not need to form a 90-deg angle on the bottomcorner nearest the gate post, and the relative location ofthe rotation axis is not so restricted.The geometrical constraint for using the 750 ExtensionArm is that the center of the splined shaft on the driveunit must be within 6 in. (15.25 cm) of the axis ofrotation of the gate leaf.WARNING! The farther away the splinedshaft is from the gate's axis of rotation, thegreater the risk of danger from pinch points.Install the drive unit so that the splined shaft is as nearas possible to the gate's rotation axis and is directlybeneath the center of the fully closed gate leaf.You need to position the extension collar (see Figure23) so that it smoothly slides within the extension Ufrom the fully closed to the fully opened position. Notethat the position of the extension collar is affected bythe overlap of the extension bar and extension U.Attach the 750 extension collar to the bottom of the gateleaf with a 7/16 in. (1.1 cm) bolt.Weld together the extension bar and extension Uaccording to Figure 23.Caution: Do not weld anything to or on theinside of the sleeve of the splined shaft.Next, weld the outside of the sleeve for the splined shaftsolidly to the inside of the hole in the end of theextension bar.Follow the rest of the instructions for installing the 750Operator. With an extension arm, you need not worryabout installing a gate leaf shoe nor about installing thegate leaf in the shoe. Instead, you will install one end ofthe welded extension arm over the splined shaft and theother end around the extension collar.In addition, you will need to provide a washer beneaththe extension collar to keep the extension U from fallingoff the collar. You also need to shield any pinch pointsaround the extension arm.(b)(a) Minimum overlap of2 1/2 in. (6.4 cm)750 extensionbar750 extension U750 extensioncollar is attachedto the bottom ofthe gate leafExtension barMinimum overlap of2 1/2 in. ( 6.4 cm)Extension UExtensioncollar slideswithinextension UHole in the extension bar fits around andis welded to the outside of the sleeve ofthe splined shaftBottom ofgate leafFigure 23. The 750 Extension Arm, (a) side view and (b) top view |
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