The past 5 years or so I have removed from service a few Merlins and several Partners, and two (if I remember correctly) ACS.
None were grounded and all except for one ACS died due to power / lightning issues. I service a Partner in a body shop that is mounted directly to the metal building. I added an UPS/surge on the AC, gas protection on the COs, and had a ground added from the unit to the power ground. They are doing road construction in front of the place and they are moving the power poles. Constant power issues. He has lost air compressor motors, lights, you name it. He has lost computers and other electronics but not even a blip on the phones.
