EXPORT IQ PLUS CHARGER (EXTERNAL)
Test Procedures
2008 Export Battery Charger Maintenance and Service Manual
Page 5-21
5
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DANGER
• Do not touch any wire or component in the battery charger while AC power is present. Failure
to heed this warning will result in an electric shock.
5. Make sure that the voltage selector switch (on the back of the charger) is set for the appropriate incoming
AC voltage. Also ensure that the secondary coil wires are not touching one another. With the relay
bypassed, insert the AC plug into an outlet. If the AC line fuse blows or AC circuit breaker trips, the trans-
former is shorted internally and must be replaced.
6. If the AC line fuse does not blow or the AC circuit breaker does not trip, check the transformer secondary
coil voltage.
7. Disconnect AC cord from the wall outlet.
8. Using alligator clips and a multimeter set to 500 volts AC, connect the multimeter probes to the second-
ary transformer coil wires (1 and 5).
9. Connect the AC cord to the wall outlet and monitor the multimeter for the secondary coil voltage. If mea-
sured voltage is approximately 85 volts AC or lower for the secondary coil, the transformer is shorted
internally and must be replaced.
10. If the voltage reading is normal (86 volts AC or higher), the transformer is operational. Disconnect the AC
plug from the wall receptacle and check the continuity of the DC circuit.
See Test Procedure 5 –
Charger DC Circuit Continuity Test on page 5-20.
11. When troubleshooting and repairs are complete, remove jumper wire and properly connect relay wiring.
See following WARNING.
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WARNING
• The relay wiring must be properly connected prior to placing the charger back into normal
service. Failure to remove the jumper wire and properly connect the relay wiring could result
in property damage, severe personal injury, or death.
Figure 5-15 Remove Secondary Coil Wires
From Heatsink