SENTROL Application notes - Alarms BC

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Commercial Applications
PROTECTING REVOLVING DOORS
APPLICATION
INSTALLATION
RECOMMENDED
PRODUCTS
Steel or aluminum revolving doors can be secured in several ways, depending
upon their material and the availability of mounting space.
For doors accessible from the top: Lock door to check its position when
secured. Mark top, side or floor where you will place the switch.
Place switch in top or canopy of the assembly. Offset it slightly as magnet will be
positioned on side of door. Drill a 15/16" (2.38 cm) diameter hole. When mounting,
use RTV mounting compound (Figure 1).
Place magnet on door as close to rubber gasket as possible (Figure 1). Observe
Polarity. If mounting magnet on steel, use spacer or order a special magnet
containing two magnets inside the housing. When using a surface mount magnet
with the 1078W, position the left end of the magnet as you read the logo, centered
off the end of the switch (Figure 3).
For doors NOT accessible from the top: Mount switch on side of door in wall
(Figure 3).
Another mounting method is to bury the switch in the floor and mount the magnet
to the bottom of the door (Figure 2).
Note: Some systems incorporate an electro-magnetic break-away device, usually
located in the drum. Locate the magnetic contact far enough away to prevent
adverse effects to magnet. Stainless steel armored cable is available if the switch
will be exposed. Consult factory.
Switch — 1078W, Magnet — 1080T (Figures 1 & 2);
or, Switch — 2227A, Magnet — 1920D (Figure 3), RTV 1905
Recessed
1078W Switch
SENTROL
Figure 1
1080T Magnet
1920-D Magnet
Door
1080T
Magnet
Top View
1078-W Switch
Wall
Align switch over
center of “S” on
logo
MAGNETIC CONTACTS
SENTROL
1080T
Magnet
SENTROL
1078-W
Switch
Figure 2
2227-A Switch
Side View
3.65