Elmo PSS 6U, PSS 3U manual Capacitor Reforming, LED Diagnostics

Elmo PSS User Guide	Installation
MAN-PSSUG (Ver. 3.01)

3-4

3.3.2Capacitor Reforming

All PSS power supplies undergo capacitor reforming prior to shipment to the customer. However, if the power supply has been idle (at the customer site) for a period of nine months or more, the capacitors must be reformed before startup.

To perform capacitor reforming:

1.Connect a 25-VAC supply at the AC input terminals and a 100-W/220-V (or 50W/110-VAC) light bulb at the power output terminals.

2.Run the power supply for an hour and then increase the voltage to 50 VAC for an additional hour.

3.For higher-voltage types, run the supply for another hour at 100 VAC.

Noncompliance with these instructions may result in capacitor failure.

3.3.3LED Diagnostics

The following LEDs are mounted on the PSS:

LED		Indication
L1	(Vs)	Existence of internal supply.
L2	(SO)	Shunt is on.
L3	(In)	Shunt is inhibited.