proving units

[matt.leung]

do proving units need Calibrating yearly or not ????

matty

 

[Barx]

Check that the proving unit is working with a voltage checker. BUT dont forget to check the voltage checker works first with a proving unit.

Oooer I dont know ?:|

 

[Apache]

Check that the proving unit is working with a voltage checker. BUT dont forget to check the voltage checker works first with a proving unit.Oooer I dont know ?:|

or check the voltage checker first with a known live - if the TV comes on that's a known live

no?

 

[Andy™]

no really point in calibrating a proving unit.... every time you use it, thats a good enough test!