Sens F3 SERIES CASE SIZE 3A Instrukcje Operacyjne Pobierz pdf (Strona 13)

F3 Series Charger Manual

Trouble

shooting

5.1 Troubleshooting Table

If there is a problem an

d you suspect the charger is at fault, turn off the AC mains supply before

proceeding. Ensure that the following are correct: AC input wiring, battery and/or load connections

and PC card connectors. Ensure no foreign objects are in charger.

Symptom

Possible Cause

Test

Corrective Action

No output /

Charge Fail

alarm

Control board

failure

Replace with known good

board

Replace board,

DC Fuse blown

Check fuse for continuity

Replace if open

High DC Shutdown

Check LED D30 on control

board

If lit, see "High output

Voltage" under Symptom

below in this chart

Power rectifier

circuit failure

Test all power diodes with

meter, perform SCR test on all

SCRs (figure 5.2)

Replace all shorted, open, or

bad parts

AC failure

Check input supply

Restore AC input supply

Shutdown due to

excessive output

voltage

Check whether LED D30 on

control board is lit

Shut off AC and DC breakers

for at least 2 minutes, then

restore

AC breaker

trips

repeatedly

Power diode, SCR,

or freewheeling

diode short

Check all power devices for

shorts

Replace shorted device(s)

DC fuse blows

or DC

breaker trips

Control board

failure

Replace with known good

board

Replace board, send bad

board to SENS for repair

Freewheeling diode

short

Check diode for short

Replace diode

Low output

voltage / Low

DC alarm

Control board

failure

Replace with known good

board

Replace board,

Misadjusted Float

Voltage pot (R34)

on control board

Adjust pot and see if output

voltage is affected

Adjust R34 to correct output

voltage

Overloaded charger

Turn off DC breaker, check

voltage on INSIDE breaker

terminals

Check load for problems, and

check battery condition

Overheating

Test all power diodes and

SCRs (figure 5.2)

Replace bad devices

Check for obstruction of top

and bottom vents

Remove obstruction(s)

Check for vertical mounting of

charger

Mount charger vertically

Verity that room temperature

is less than 50 C

Reduce room temperature

Verity that AC input voltage

is not higher than charger's

specified operating range

Contact utility company

Check for failure of one phase

Contact electrician or utility

company

Bad filter capacitor

Disconnect capacitors one at a

time and check for change in

output voltage

Replace capacitor that

corrected output voltage

when removed

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 19 20

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Sens F3 SERIES CASE SIZE 3A Instrukcje Operacyjne Strona 13

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