© Interleader Limited 2017
25 of 30
Printed: 06/09/2017
25 Diagnostics and Fault Finding
The following are the range of simple tests that an end-user of the MLC can perform
– to be carried out
in the order given.
Basic Visual Checks
– Ensure that:
The unit is properly mounted, secure and appears physically undamaged
There are no signs of overheating or leakage (could indicate a split battery)
Basic Operational Checks
– Ensure that:
The magnetic switches operates correctly
If the unit comes on with the Battery Status LEDs showing but then goes out (indicates an
exhausted battery)
Check the charge state of the battery
If the unit does not come on at all, go to next step
If unsure of the charge state of the battery, connect to the charger and ensure that the
charge cycle is as follows:
1.
There may be a brief period before the Green ‘Charging’ LED comes on (charger
controller is checking the state of the battery)
2.
The Green ‘Charging’ LED comes on an stays on for up to 4 hours (indicates bulk
charge cycle)
3.
The Green ‘Charging’ LED then goes off (indicates that the charger has entered the
trickle charge phase).
If at any time during charging the Re
d ‘Fault’ LED comes on it indicates a fault has been
detected by the charger circuit
– most likely with the battery.
1. The first time this happens, disconnect the power and wait 5 minutes before trying
again as the fault may clear
2. Repeated display of the Red
‘Fault’ LED indicates a serious fault and the unit should
be returned to FEC for rectification
Returning the MLC:
Defective Li-Ion batteries are not permitted to be air transported.
Turn off the unit
Securely wrap the unit in protective foam or similar
Send the unit to FEC for repair
– by a permitted carrier (see next section)
