SENTROL Application notes - Alarms BC
SENTROL Application notes - Alarms BC
SENTROL Application notes - Alarms BC
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Commercial <strong>Application</strong>s<br />
PROTECTING A FREEZER DOOR<br />
APPLICATION<br />
INSTALLATION<br />
RECOMMENDED<br />
PRODUCTS<br />
Securing a freezer door against unauthorized entry. The Sentrol normally closed<br />
2505A-L5 industrial magnetic contact can withstand condensation or temperatures<br />
in freezers down to -40˚F.<br />
The switch and actuating magnet (part 1920D) are mounted with sheet metal<br />
screws inside the freezer on the door and door casing as shown. Because steel can<br />
decrease the gap of the switch by as much as one half, mount Sentrol 1913<br />
anodized aluminum spacers (1/2" (1.27 cm) thick) under the switch and magnet to<br />
decrease the effect of the steel on the magnetic field. The magnet and switch<br />
should be at the top of the door to prevent accidental damage to the switch and to<br />
discourage tampering. Logos on magnet and switch must read in the same<br />
direction as shown (the switch is polarity sensitive).<br />
Test using ohmmeter.<br />
Switch — 2505A-L5; Spacer — 1913; Magnet — 1920D; Clamp — 1931.<br />
1931 Clamp 1913 Spacer<br />
2505A Switch<br />
<strong>SENTROL</strong><br />
Ceiling<br />
1913 Spacer<br />
1920D<br />
Magnet<br />
<strong>SENTROL</strong><br />
Freezer Door<br />
MAGNETIC CONTACTS<br />
3.64
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