Nilfisk-Advance 56206980 Service Manual page 10

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3-TEST AC POWER CIRCUIT
A Measure AC line voltage at the outlet to be sure the correct AC voltage for the specific part number
charger is present (115 VAC, or 230 VAC). If the correct AC power is present, disconnect the AC plug
and the charging plug.
B Adjust the multimeter to the low resistance scale (R X 1) or use a low voltage continuity tester. Connect
the tester leads to the flat prongs on the AC plug.
• MANUAL TIMER CHARGER
Turn the timer knob to "ON" and note the response. The circuit should be complete when the timer knob
is turned to "ON", (Fig. 4) and open when the timer knob is turned to "OFF".
• AUTOMATIC TIMER CHARGER
Connect the charging plug to the charging receptacle and listen for the control relay to "click" on, 2 to 5
seconds after connection.
• The circuit should be open before the relay "clicks" on and the circuit should be complete after the relay
"clicks" on.
C If the circuit does not test as described, individually check the AC cord, manual timer contacts, control
relay contacts, primary transformer coil(s) and all connections.
DANGER!
HIGH VOLTAGE! With the charger on, the charger capacitor voltage is approximately 650 volts AC.
Use extreme caution when working near the capacitor terminals.
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BATTERY CHARGER SERVICE MANUAL
FIGURE 4. Test AC circuit for continuity.
FORM NO. 56041170 / BATTERY CHARGER SERVICE MANUAL / PARTS LIST - 9