Raytec VARIO w2 - Manual (Page 9)

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VARIO Troubleshoot
Ensure all tests are undertaken by a qualified, trained engineer.
Ensure safe working practices are followed at all times.
Step 1: Basics
• Check polarity of Lamp connection red=+ve, black=-ve
• Ensure power is 12-24V AC or DC
• Ensure telemetry wires are shorted out or closed contact input (zero volt) is applied
• Check photocell is working. Cover photocell fully, light should turn on. It is
sometimes difficult to see Infra-Red lamps working in high brightness conditions.
• Ensure power supply is suitably rated to product - check page 8 for specifications
• If longer cables used, ensure sufficient voltage is provided to allow for drops
across the cable
If OK…
Step 2: Lamp Test
• Check current is being drawn – amount of current will depend on power setting of
unit. Please note – use appropriate multimeter depending on how the unit is being
powered (AC or DC)
To test this you must ensure photocell fully covered (or disabled using optional
VARIO remote controller) and ensure telemetry wires are shorted out or closed
contact input (zero volt) is applied