Bosch EX65 Instruction Manual download pdf (Page 22)

EX65 Explosion-protected Illuminator Troubleshooting | en 23

Bosch Security Systems, Inc. Instruction Manual F.01U.162.949 | 1.0 | 2011.03

8 Troubleshooting

8.1 Illuminator Operation

The following table is intended to help you identify the causes of malfunctions and correct

them when possible.

Issue Possible Solution

Fuse blows – Check the fuse rating.

– Check for shorting between the housing and the input power

wires.

Cannot tell if LEDs

are ON

850 nm LEDs will have a faint red glow when ON.940nm LEDs are

covert. To check:

– Aim the LEDs directly at an IR sensitive camera, or

– Wait for the LEDs to warm up (two minutes).

LEDs are not ON – Cover the photocell to activate power to the LEDs (up to 30

seconds delay for activation).

– Adjust the photocell sensitivity control. See

Section 6 Configuration, page 20.

– Adjust power to the LEDs.

LEDs do not turn

OFF when sufficient

ambient light is

present

– Make sure the photocell is not covered or hidden behind any

object.

– Adjust the photocell sensitivity control. See

Section 6 Configuration, page 20. The LEDs remain ON or OFF if

the adjustment is at full turn.

LEDs oscillating ON

and OFF

– Adjust the photocell sensitivity control. See

Section 6 Configuration, page 20.

– Remove any objects in front of the LEDs that are causing

reflections back to the photocell sensor.

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Bosch EX65 Instruction Manual Page 22