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Electronic Vibration Cutout Switch (Optional)
Two models of electronic vibration cutout switches are available. The single set point model contains one trip limit for
shutdown. The dual set point model contains two independent trip limits; one for alarm and one for shutdown. The shutdown
set-point is factory set at 0.45 in/sec. Additional details can be found in the submittal packet.
power has been disconnected and locked in the off position. Moisture inside the switch can lead to switch
failure. Care must be taken when replacing the cover on the vibration switch to ensure that the proper
watertight seal is obtained.
Testing:
•
The test position sets in the minimum set point so that any vibration will cause a trip condition.
•
The light will come on immediately, and the trip will occur after the duration of the time delay, proving the complete
system is operational.
•
If test position is maintained for less than the duration of the time delay, the trip will not occur, thus permitting the system
test without shutdown.
Calibration:
•
A light adjacent to the set point control comes on the instant the measured vibration level exceeds the set point.
•
The unit can be periodically calibrated on line by turning the set point control down until the light comes on. This setting is
then compared with the vibration measured with a portable vibration meter, thus providing a calibration check of the unit.
•
If the trip setting is maintained, trip will occur after the duration of the time delay.
Remote Reset: Connection of between terminals 6 and 7 latches electromechanical relay output in alarm state after set point is
exceeded. Opening the connection will reset the output to non-alarm state.
Vertex™ Evaporative Condenser Operation & Maintenance Manual – Operation Considerations for Accessories
: Before performing an adjustment or inspection of the VCOS, make certain that all
Figure 13. Electronic VCOS with Alarm Contact is Shown
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