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IMI SENSORS 685a User Manual

IMI SENSORS 685a
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10
operation
240 VAC Switch—A 240VAC, 50 Hz power supply is needed to remotely reset
the switch by energizing a solenoid. Upon applying 240VAC to the solenoid,
the unit will need 92mA to energize the remote reset coil. At standard ambient
temperature, the solenoid has a 25% “on” 75% “off” cycle.
Maximum allowed On Time (remote reset energized) versus minimum
Off Time (remote reset de-energized).
On Time ( 25% ) Off Time ( 75% ) Total Time ( 100% )
4 Minutes ( Max ) 12 Minutes 16 Minutes
2 Minutes 6 Minutes 8 Minutes
1 Minute 3 Minutes 4 Minutes
30 seconds 1.5 Minutes 2 Minutes
A power ON delay may be required when starting tower fan motor across
the line (DOL). A 15 second delay is suggested to allow the fan to come
up to full speed before allowing the switch to activate.
Commissioning
Before testing the switch make sure it is reset. If the red plunger protrudes
outwards push the reset button inwards to reset the switch, Figure 1.
The switch is shock sensitive. Using a dead-blow hammer strike the lid or switch
support beam to trip the switch. A trip is visually indicated by a protruding
red stem shown in the reset button, Figure 1. Reset the switch for operation.
Note

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IMI SENSORS 685a Specifications

General IconGeneral
BrandIMI SENSORS
Model685a
CategorySwitch
LanguageEnglish