REYMSA COOLING TOWERS, INC.
www.reymsa.com
22
Do not exceed voltage or current ratings of the contacts
WARNING
Follow appropriate electrical codes/methods when making electrical connections. Make sure that the
electrical cable run is secured to the machine and is well insulated from electrical shorting. Use of conduit is
recommended.
Sensitivity Adjustment
Each vibration switch is adjusted to the specic piece of machinery on which it is installed. After the switch
has been installed, the sensitivity adjustment will be increased or decreased so that the switch does not trip
during start-up or under normal operating conditions. This is typically done as follows:
▪ Remove all covers, lids, and electrical enclosures.
▪ Press the reset push button to engage the magnetic latch. To be sure the magnetic latch has engaged,
observe latch through the window on the vibration switch (see Figure A-47).
▪ Start the fan motor. If the vibration switch trips on start-up, allow the machine to stop. Turn the sensitivity
adjustment 1/4 turn clockwise (see Figure A-48): Depress the reset button and restart the machine.
Repeat this process until the unit does not trip on start-up.
SENSITIVITY ADJUSTMENT
Figure A-47: Vibration switch detail
LESS SENSITIVE
MORE SENSITIVE
Figure A-48: Sensitivity adjustment
If the vibration switch does NOT trip on startup, stop the machine. Turn the sensitivity adjustment 1/4 turn
counter-clockwise. Repeat the start-up/stop process until the vibration switch trips on start-up. Turn the
sensitivity adjustment 1/4 turn clockwise (less sensitive). Restart the motor to verify that the instrument will
not trip on start-up.
▪ At this setting, you should expected the vibration switch will trip when abnormal shock/vibration exists.
▪ Verify the vibration switch sensibility annually to prevent any malfunction.
Installation
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