The following information is intended to assist in identifying the cause of unit non-operation and to enable a cost-effective return to service.

These troubleshooting procedures will require the use of basic electrical testing equipment such as a voltmeter and continuity tester. Knowledge of the proper use of this equipment is required. Some tests will require that the units be energized, thus creating a potentially hazardous exposure to high voltage. Only qualified personnel should perform troubleshooting.

While this guide will apply to the majority of problems that might occur, there are applications that will require more specialized troubleshooting methods. Consult the factory for assistance in these applications.

PROCEDURES

Step A: Determine Power Supply to Unit

Turn off the power circuit at the breaker. Disconnect the supply wires from the unit and isolate them so they will not cause a short circuit. Turn on power to the circuit and carefully measure and record the supply voltage using an AC voltmeter. The power supply connections to the unit should be as follows, with the power off:

(120VAC), connect the white transformer wire to the neutral supply wire and the black transformer wire to the “hot” supply wire. The orange or violet transformer wire should be capped off securely with a wire nut to prevent electrical shock.

(277VAC), connect the white transformer wire to the neutral supply wire and the orange or violet transformer wire to the “hot” supply wire. The black transformer wire should be capped off securely with a wire nut to prevent electrical shock.

With all connections secure, restore power to the circuit.

Step B: Determine if the Power is Reaching the Printed Circuit Board

With an AC voltmeter, measure the output from the transformer secondary. The transformer secondary consists of two wires going from the transformer to the printed circuit board. If there is no voltage present, the transformer should be replaced.

Step C: Determine the Charger Output

With the unit deenergized, disconnect the battery from the unit and replace it with a fully charged battery (open circuit voltage of 6.40V or greater). Apply power to the fixture. After about 5 minutes, measure the battery voltage with a DC voltmeter. (Do NOT press the test switch!) A 6-volt battery should measure 6.8 – 7.0 volts and a 12-volt battery should measure 13.6 – 14.0 volts. If the charger is defective and has not been charging the battery, recharge the battery for at least 24 hours before checking battery capacity.

Step D: Determine the Battery Condition

The battery must be tested with the lamp load that the unit is rated for. Connect a DC voltmeter across the battery terminals and measure the battery voltage after 2 minutes. The reading should be above 6 volts for a 6-volt battery and 12 volts for a 12-volt battery. If the reading is below the specified values, the battery needs to be replaced.

Step E: Determine the Load on the Output Circuit

Verify the type and wattage of the emergency lamps as well as any remote lamps that may be connected to the unit. Verify that they are of the correct voltage and that the combined wattage does not exceed the capacity of the unit. Lamps that are not working can be checked by pacing a continuity meter across the terminals to verify that the filament is intact.

The procedures above should be sufficient to isolate the problem and identify the component the needs to be replaced. Additional troubleshooting can be obtained from the factory.

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