Harman Martin VDO Dotron, User Manual

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10 VDO Dotron User Manual
Precautions to avoid damage
Important! To obtain the best performance from the VDO Dotron and avoid causing damage that is not
covered by the product warranty, make sure that everyone who is involved in installing, working on or using
the VDO Dotron has read and understood the following information.
Cleaning
Excessive dirt buildup causes overheating and may lead to damage that is not covered by the product
warranty. Clean the product at regular intervals (see “Installing optical accessories” on page 28).
Operating temperature precautions
• Exposing the VDO Dotron to direct sunlight, or operating it in an ambient temperature that exceeds the
specified maximum of 55° C (131° F) that applies while showing average video content, may reduce the
lifetime of the product.
• When using a Martin® P3 System Controller, a Thermal Throttling feature is available. This feature
gradually dims all the fixtures in the installation if one or more fixtures approaches maximum operating
temperature. If you do not activate Thermal Throttling, the VDO Dotron’s internal thermal protection will
shut down the fixture if the fixture exceeds maximum operating temperature. The fixture will light again
when its temperature has fallen to a safe level. To avoid blackouts due to thermal shutdowns, we therefore
recommend that you activate Thermal Throttling.
• When using DMX control, VDO Dotron fixtures automatically begin to reduce their light output when the
ambient temperature reaches 45° C in order to control their internal temperature. Output is reduced
gradually as the ambient temperature rises above 45° C. Fixtures will still light at the maximum ambient
temperature of 55° C, but output will be considerably reduced. This feature avoids blackouts due to
protective thermal shutdowns.
Sealing unused connectors with blanking caps
Blanking caps for female BBD connectors can be ordered separately in sets of 10 (see “Connectors” on
page 36). Install blanking caps on all unused female BBD connectors to seal them against water and dirt,
otherwise short-circuits and damage may occur.
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