Alpha Technologies APP 9022S - Manual (Page 19)

3. Trouble-Shooting
19
© 2002 TM 016-537-B0-001 Rev. A
3.1Trouble-Shooting Guide, Continued
Symptom #3:
Incorrect output voltage; And/or Ammeter reads excessive current (above rated
output of APP SPS):
Probable Cause:
60/75/90 VAC switch in wrong position
Wrong type of voltmeter used
Under-loaded output (less than 1 Amp)
Overloaded output
Short exists in load
MOV shorted in SPI
APP 9015S only: 120/240 V switch in
wrong position
Solution:
Move switch to required position
Use true RMS voltmeter
Connect load
Reduce load
Locate and remove short
Replace SPI
Set switch to correct line voltage