SharpEye 20 Betriebsanweisung PDF herunterladen (Seite 34)

4.1.3 Keeping Maintenance Records

It is recommended that maintenance operations performed on a detector are recorded in a

Log-book. The record should include the following:

• Installation date, and contractor

• Serial and tag no.

• Entries for every maintenance operation performed, including the description of the

operation, date and personnel ID.

If a unit is sent to Industrial Scientific or a distributor for service, a copy of the

maintenance records should accompany it.

4.2 Troubleshooting

This section is intended to be a guide to correct problems which may happen during

normal operation.

Table 22: Troubleshooting Table

Problem Cause Corrective Action

LEDs Off

Fault Relay at N.O 0-

20mA at 0mA

No power at the unit • Check that the correct power

is sent to the detector.

• Check power polarity.

• Check wiring in the detector.

• Send the detector back for

repairs.

Yellow LED flashes

at 4 Hz

Fault Relay at N.O 0-

20mA at 0mA

Fault Detector

• Low Voltage

• Faulty

Detector

• Check the voltage at the

detector; verify at least 24V

at the detector terminal.

• Send the detector back for

repairs.

Yellow LED flashes

at 4 Hz

Fault Relay at N.O 0-

20mA at 2mA

BIT Fault

• Faulty

Detector

• Clean detector window.

• Re-power the detector.

• Replace the detector.

Red LED constantly

If no fire exists, then,

detector alarm

latched

Perform Reset to the detector.

Alarm Relay at On 0-

20mA at 15mA

Alarm condition • Check cause for alarm.

• If no alarm, re-power the

detector.

• Send the detector back for

repairs.

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