Installation
LTPS-UM-8007-01, Issue 1
46
November 9, 2001
SPX-CABFIN01, SPX-CABFIN04
21
If necessary, adjust rectifier module No. 1 FLT potentiometer for a DMM indication within ±0.1 Vdc of the
value marked on the battery temperature compensation module. To increase, adjust the FLT potentiometer
clockwise.
22
Recheck the rectifier output voltage. (Use the same DMM connections as in Step 14.) If the voltage is not
within ±0.1 Vdc of the value found on the chart in Step 15, check for a defective temperature compensation
module or wiring.
23
At rectifier module No. 2, set the DC OUTPUT circuit breaker to ON; set the AC INPUT circuit breaker to
ON. Verify that the rectifier module No. 2 AC ON/RFA LED is lighted green.
24
At rectifier module No. 1, set the AC INPUT circuit breaker to OFF; set the DC OUTPUT circuit breaker to
OFF. The rectifier module No. 1 AC ON LED will be lighted red.
25
Allow rectifier module No. 2 to operate for 10 minutes (minimum), to ensure that the rectifier has stabilized.
26
Measure the rectifier output voltage. Use the same DMM connections as in Step 14. The DMM indicates
rectifier No. 2 output.
27
Verify that the rectifier output voltage is within ±0.1 Vdc of the value found on the chart in Step 15.
28
Use the DMM to measure the calibration voltage at rectifier module No. 1 CAL VOLTS (+) and (–) jacks.
29
If necessary, adjust the rectifier module No. 2 FLT potentiometer for a DMM indication within ±0.1 Vdc of
the value marked on the battery temperature compensation module.
30
Recheck the rectifier output voltage (Step 14). Verify that the voltage is within ±0.1 Vdc of the value found
in Step 15.
31
At rectifier module No. 1, set the DC OUTPUT circuit breaker to ON. Set the AC INPUT circuit breaker to
ON. Verify that both rectifier module AC ON/RFA LEDs are lighted green.
32
Verify that the calibration voltage of both rectifiers is within ±0.1 Vdc of the value shown on the temperature
compensation module.
33
Repeat Step 20 through Step 32 until both rectifier module output voltages are identical and the calibration
voltage is within ±0.1 Vdc of the calibration value.
34
At the AC load center, set circuit breakers CB2 and CB3 to OFF.
Make adjustments slowly to allow battery voltage to stabilize.
When output voltage adjustments are complete, the rectifier output currents may be unequal:
this is not an abnormal condition.
