SENTROL Application notes - Alarms BC

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Commercial Applications
APPLICATION 3
INSTALLATION
RECOMMENDED
PRODUCTS
PROTECTING STEEL DOORS
WITH RECESSED TOP
Recess of 3/4" or more
The third method for protecting steel doors with recessed tops uses a regular
switch with a door recess of 3/4" (1.9 cm) or more.
Caution: Consult factory for installations on steel doors without recessed tops.
Make sure recess is at least 3/4" (1.9 cm) deep.
Glue wood block in top of door. The thickness of the block should leave 5/8"
(1.59 cm) to the top of the door.
Carefully align position for switch and magnet. The end of the magnet must be
centered on the switch as shown.
Drill hole for switch in door frame — 11/16" (1.75 cm) for 1078CW,
15/16" (2.38 cm) for 1078W.
Wire switch to loop and insert in frame.
Drill hole for magnet — 9/16" (1.43 cm) for 1078CW, 5/8" (1.59 cm) for 1078W.
Wire switch to loop and insert in frame.
Using RTV or epoxy, glue magnet in place.
Retest.
1078CW (wide gap up to 3/4" (1.9 cm)); 1078W (wide gap up to 1" (2.54 cm)),
RTV 1905
Line up center of
magnet with centerline
of switch
5/8"
Switch
Magnet
RTV
Mounting
Compound
or Epoxy
MAGNETIC CONTACTS
Block of Wood
3.63