9
Bench Check Instructions
1. Wire up the regulator as shown in figure A.
1.
Connect up a 120 volt 50 to 150 watt light bulb to the F+ and F- Terminals.
2.
Adjust the internal voltage and stability pots fully CCW (25 turns) or until a click is heard.
3.
Input 120vac into the regulator at #1 and #2. (Fuse this input with fuses rated at 120 volts
or higher and not more than 5 amps ac )
4.
Observation:
The green status light should be on and the light bulb across F+ and F-
should be off. If the green status light is not on, the internal fuses are blown in the regulator
or there is internal damage to the regulator! If the green status light is not on, do not
continue this test!
5.
Turn the internal voltage adjustment CW until the light bulb across F+ and F- turns fully on,
then adjust the internal voltage adjustment CCW until the light bulb is very dim.
6.
Adjust the stability adjustment CW until the light bulb begins to brighten up.
7.
Turn both of the internal voltage and stability pots fully CCW (25 turns ) or until a click is
heard.
8.
Remove the 120vac from the regulator.
9.
Connect up the regulator in configuration B and perform all of the previous steps again. In
this mode, the light bulb will only glow at half brilliance!
10.
If you were able to successfully perform all of these tests, the regulator is good.
120 vac
F+
F-
1 2 3 4 5 6 7 8
120 vac
F+
F-
1 2 3 4 5 6 7 8
Figure A
Figure B