Alpha Technologies Spectra Series - Manual (Page 44)

Preliminary Operating Instructions 44 of 62 AIP SERVICE NUMBER 1-800-863-3364
INPUT BREAKER SYMPTOMS
Symptom Possible
Cause
Recommended Action
13) AC supply
breaker or
CB1 AC
breaker (trips)
OFF
immediately
after reset,
and the
CB2 DC
breaker
remains ON. Defective AC
input wiring or
wrong voltage. Check AC input wiring, jumper connections (W1) and AC input voltage to
make sure they are proper for the charger label and AC circuit breaker. See
FIGURE 6.2 for proper jumper connections. See FIGURE 6.1-1 for Charger
Ratings and Breaker sizes. Make sure all TS2 Input Terminal Strip and CB1
AC Breaker connections are tight. Verify T1 wires 1- 4 are in proper location.
See Charger schematic.
Defective
input voltage
protection
device.
Verify V2 Input Surge Suppressor MOV or optional Lightning Arrester are not
shorted or defective. Disconnect parts from circuit and retest.
Defective T1
transformer.
With DC breaker CB2 OFF, disconnect Transformer T1 Secondary wires from
Anode A of both the SCR1's. See FIGURE 15.2.2-1 or FIGURE 15.2.2-2 for
SCR anode connections. Make sure wires are not touching anything. Reapply
AC power, Turn ON AC circuit breaker. If CB1 breaker trips again you need to
replace the transformer. If CB1 does not trip, you will need to measure
transformer T1 voltages with a multimeter. See SECTION 15.3 for
instructions. If transformer measures bad, replace it.
14) AC supply
breaker or
CB1 AC
breaker (trips)
OFF a few
minutes after
reset, and the
CB2 DC
breaker
remains ON. Defective AC
input wiring or
wrong voltage. Check AC input wiring, jumper connections (W1) and AC input voltage to
make sure they are proper for the charger label and AC circuit breaker. See
FIGURE 6.2 for proper jumper connections. See FIGURE 6.1-1 for Charger
Ratings and Breaker sizes. Make sure all TS2 Input Terminal Strip and CB1
AC Breaker connections are tight. Verify T1 wires 1-4 are in proper location.
See Charger schematic.
Open SCR1. If the AC current draw is higher than expected, check the charger DC output
current on the charger display. If DC output current is OK and the AC current
draw is high, the charger may have only one SCR1 working.
See SECTION 15.2.2 for procedure to determine if the charger has an open
SCR1.
Defective CB1
breaker.
If the AC current draw is less than the AC current rating (found in FIGURE
6.1-1 or on the ratings decal on the lower front of the charger) but the AC
breaker is tripping, then the AC breaker may need to be replaced.
Open wire to
SCR Gate .
If both SCR1s appear to be OK, verify brown JE4-1 and JE4-2 wires are
good.
SCR1 not
controllable
If DC output current is higher than the charger is setup for in the maximum
DC amps setting you may have an uncontrollable SCR1. See DC Settings
and charger label for maximum output current. Change DC amps setting to a
lower value using the Control board buttons. If the DC amps on the display do
not drop you may have a shorted or leaky SCR1. See SECTION 15.2.1 for
procedure to determine if the charger has a shorted or leaky SCR1.
Defective A1
SCR Driver
Board
If both SCR1s appear to be OK, replace A1 SCR Driver Board with a different
board.