Instruction manual

2.3 VITAL FUNCTIONS TEST
After the appropriate line voltage has been applied to the BOS/S, it may be desirable
to do a VITAL FUNCTIONS TEST to verify that no damage was sustained during
shipment.
VOLTAGE MODE
A) Ensure that the voltage sensing leads are connected.
B) Switch the V/I switch to V.
C) Switch the VOLTAGE INT/EXT to INT.
D) Rotate the VOLTAGE CONTROL POTENTIOMETER fully clockwise.
E) Rotate the +V LIM POTENTIOMETER fully clockwise, -V LIM
POTENTIOMETER fully counter clockwise.
F) Turn unit on by pressing CB1 upward to the ON position.
G) When unit turns on, the fan will be audible, the V MODE LED will
illuminate and the Voltage Meter should be deflected full scale positive.
Rotate the VOLTAGE CONTROL POTENTIOMETER fully counter clockwise and
observe meter deflection in the negative direction.
CURRENT MODE
A) Place a short circuit on output terminals.
B) Switch the V/I switch to I.
C) Switch the CURRENT INT/EXT to INT.
D) Rotate the CURRENT CONTROL POTENTIOMETER fully clockwise
E) Rotate the +I LIM POTENTIOMETER fully clockwise, -I LIM POTENTIOMETER
fully counter clockwise.
F) Turn unit on by pressing CB1 upward to the ON position.
G) When the unit turns on, the fan will be audible, I mode LED will illuminate
and the Current Meter should be deflected full scale positive.
Rotate the CURRENT CONTROL POTENTIOMETER counter clockwise and observe
meter deflection in the negative direction.
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83-469-001 Rev. B