Apollo Smoke Detector XP95 Installationshandbuch - Seite 16

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Before investigating individual units for faults, it is very important to check that the system wiring is fault free.

Earth faults on a data loop or any ancillary zone wiring may cause communication errors.

Many fault conditions are the result of simple wiring errors. Check all connections to the unit and make sure

that the correct value resistors are ﬁ tted where necessary.

Fault ﬁ nding

Unable to obtain fast or slow ﬂ ashing alignment LED Voltmeter lead connected to interface

Receiver has constant slow ﬂ ashing alignment LED

Interface alarm LED illuminated

Interface HI or LO LED illuminated

Notes

The alarm LED is illuminated by the control panel usually when the beam detector is in alarm condition.

However, some control panels illuminate this LED when a device fault is detected. In alignment mode, the

beam detector interface returns a fault signal.

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TROUBLESHOOTING

No power to interface

Receiver incorrectly wired

Transmitter not aligned with receiver

Transmitter power too low

No power to transmitter

Receiver not pointing toward transmitter

Beam is in alarm condition

See notes

Beam out of alignment

Alarm Condition

Beam partially obscured

Transmitter or receiver contaminated

Environmental conditions

Fault Condition

Interface is in alignment mode

Beam out of alignment

Beam obscured

Receiver incorrectly wired

Environmental conditions