Nilfisk-Advance 56206980 Service Manual page 16

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8-AMMETER REMAINS AT MAXIMUM CHARGE FOR MORE THAN 30 MINUTES
This condition normally results if the charger is connected to a battery pack which is of lower system voltage
than specified in the operaters manual and / or the charger case.
CAUTION!
Do not connect the charger to, or attempt to use the charger on battery packs of different DC voltage
than specified on the front of the charger. Overheating and transformer burn-out will result.
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9-TEST AUTOMATIC TIMER SECTION FOR "DOES NOT TURN OFF"
A Disconnect the AC power supply cord and the DC charging plug. Remove the cover and verify that the
control cable assembly leads are securely connected in accordance with the correct wiring diagram for
the specific part number charger.
B Using the test kit, check continuity of the green sense lead between the pad on the test kit in line with the
green wire and where the sense lead connects to the diode terminal. If the circuit is "open", replace the
control cable assembly.
C Connect the charger DC plug to the charging receptacle and then the AC power cord to turn the charger
on. Remove the automatic timer kit retaining screws and carefully slide the kit out the front of the
charger. Disconnect the edge connector from the circuit board and note if the transformer hum ceases
and the ammeter drops to zero. Does the charger now turn off?
• CHARGER DOES NOT TURN OFF: The control relay has frozen "ON". Replace the relay with the
correct part number as specified on the correct parts list for the specific part number charger.
• CHARGER TURNS OFF: The automatic timer kit is malfunctioning. Replace the automatic timer kit with
the correct part number as specified on the correct parts list for the specific part number charger.
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BATTERY CHARGER SERVICE MANUAL
FORM NO. 56041170 / BATTERY CHARGER SERVICE MANUAL / PARTS LIST - 15