Full Product Manual
Installation and Operation
6 Owner’s Manual for Surge Protection Device
Operation
1. Apply system power. The LED should illuminate.
NOTE: If the connected LED does not illuminate, remove
power, check connections, and test again. If the LED still
does not light, contact an IASD.
2. The SPD will automatically begin to protect
downstream electrical devices from damaging
voltage transients.
With all phase voltages present, the LED indicator
reports the status of the protection elements and is active
when all of them are intact and providing protection. Any
loss of protection is signaled when the LED turns OFF.
The unit is not repairable and contains no user
serviceable parts. If the unit fails, as evidenced by the
LED turning OFF, contact an IASD for a replacement.
IMPORTANT NOTE: Do not use the Suppression
Circuit Status LEDs as an indication of the presence
or absence of system phase voltages.