How to Install an Over- the- Range Microwave. The first step in installing the new over the range microwave is to attach the mounting bracket to the wall. The exact center of the area is measured (in my case 1. The bracket is centered on the line and attached to the wall. Attachment is accomplished by either using toggle bolts or wood screws. The instructions indicated that at least one wood screw is to be used, so the studs must be located for that screw, as well as any others that might be used. In the case here, the studs were visible through either the exhaust vent hole or the smaller hole where the wire originally came through the wall, but in most cases a stud finder from your homeowners tool set is very useful. In my case there were wooden blocks installed on the underside of the cabinet to support the fan, and these blocks extended from the front to the back under the cabinet. The blocks resulted in the bracket being installed just barely too high and it had to shifted just slightly down by loosening the screws and pushing down. The instructions indicate that the bracket should touch the bottom of the cabinet; I suggest that it be installed perhaps 1/1. It will make installation of the microwave easier if this bracket is just below the cabinet instead of touching it. Holes need to be drilled through the wall for the toggle bolts; 5/8" is the perfect size for most toggle bolts, and a spade bit makes quick work of the sheetrock. The stud(s) to receive wood screws should also be predrilled as the large screws may split the wood and are difficult to drive without predrilling the 1/1. In my case, I found an additional stud that could be used and so used 3 toggle bolts and 2 wood screws instead of the 3 toggle bolts and 1 wood screw. It doesn't affect the installation of the oven and provides a more secure support. The cabinet bottom needs prepared as well; holes must be drilled in exact locations for screws to pass through and screw into the microwave. ![]() A paper template is provided to locate these holes; tape it to the bottom of the cabinet and drill where indicated. Holes that are 3/8" in diameter are the preferred size for the screws, while a 1 3/8" spade bit provided the hole necessary for the electrical cord to pass through that was just right for that cord end. The instructions indicated a 2" hole for the cord, but that is overly large; the smaller 1 3/8" hole was perfect. The sides of the cabinet generally project down past the bottom of the cabinet, and in this case a wooden block needs to be made so that when it is placed under the cabinet it is the same height as the sides are.
How to install an over the range microwave oven. Installing a microwave isn't difficult, but here are some tips for potential problems and their solutions. The installed microwave will touch the bottom at the lowest point (i. Drill the same 3/8" hole in the blocks so the screw will pass through the bottom of the cabinet and the block into the microwave. In my own case the block needed to be 1 1/4" thick; a typical ¾" pieced of wood coupled with a piece of ½" plywood would have been perfect, but blocks were already in place to support the now removed fan. Unfortunately the holes in the bottom of the cabinet and the blocks were almost, but not quite, in the correct spot. And additional 1/2 hole needed to be drilled; this was done by working the drill bit up and down with side pressure applied until the holes were in the correct place, but elongated. The screw head nearly fell through the elongated hole, which is of course unacceptable. I chose to use some large "fender" washers on top to cover the hole; these washers are over an inch across with only a 1/4" hole for the screw to go through and thus covered the overly large hole in the cabinet bottom and spread the weight out. Alternatively, a new false bottom could be placed in the cabinet, made from hardboard. ![]() ![]()
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