Download Group I Operating Manual - Eagle Eye Power Solutions

SERVICING THE AT10.1
SYMPTOM
PROBABLE
CAUSE
AT10.1 never 1. Current Limit
reaches float set too low
or equalize
voltage
(within 1%)
2. Defective
battery or dc
load, or load is
too great
3. Wrong ac
input voltage, or
voltage too low,
or T1 wired
incorrectly
4. Defective
rectifier bridge
Input current
too high
Output ripple
voltage too
high
RECOMMENDED ACTION
1. If the AT10.1 is not in the Edit Mode, press the
EDIT/ENTER key five times, until the meter display flashes the
Current Limit value (in Amperes). If the Current Limit is less
than 110%, adjust it to 110% as described. See Setting the
Current Limit value, Section 2.3.5 for details.
2. Check each cell of the battery. If one or more cells are
shorted, the AT10.1 may not be able to reach the Float
voltage. You may have the same problem if the normal load
current is more than the rated output current of the AT10.1.
3. Make sure the T1 primary taps are wired correctly for your
input voltage. See Changing Transformer Taps, Section 1.6 for
details. The actual ac input voltage must be at least 88% of the
rated value for the AT10.1 to produce full output power.
4. Use a clamp-on ammeter to measure the current in wire #
12 or # 11. If it less than 70% of the dc output current, one of
the SCRs or diodes is defective. Replace the rectifier module.
5. Defective
5. Turn off both front panel breakers. Turn on the dc breaker
Main Control
(CB2) first, followed by the ac breaker (CB1). If the AT10.1
PC Board (A1) output current is below the Current Limit value, but it still has
the wrong output voltage, replace the Main Control PC Board
(A1).
1. Wrong ac
1. Be sure the T1 primary taps are wired correctly for your
input voltage, or input voltage. See Changing Transformer Taps, Section 1.6 for
transformer
details. The actual ac input voltage must be at least 88% of the
(T1) wired
rated value for the AT10.1 to produce full output power.
incorrectly
2. Disconnect wire # 24 from terminal E3 of the rectifier
2. Defective
rectifier bridge assembly (near the left front of the enclosure). Restart the
AT10.1. If You are able to measure output current, one of the
SCRs is defective. Replace the rectifier assembly.
3. Defective
3. Test by disconnecting wires from X1, X4, Y1 and Y2. If ac
Transformer (T1) input current is still too high, replace T1.
1. AT10.1 is
1. Verify by checking nameplate against the ordering code on
UN-filtered
the inside front cover. Order and install filter option if
necessary.
2. Battery is
2. Be sure battery is connected. Inspect battery according to
disconnected or the manufacturer's instructions.
defective
3. Battery too 3. Check the measured ripple against the specification for your
small for
AT10.1 model on page 70. The ripple rating is for a battery
charger rating whose Ampere-hours are four (4) times the charger Ampere
rating. For a smaller battery, ripple voltage may be higher.
4. One or more 4. Test with capacitance meter. Replace as necessary.
defective filter
capacitors, C1
or C2
53