Operation In Extreme Ambient Temperatures - Martin Cyclo Directional IP65 User Manual

or two with the front cover removed so that air circulates, then refit the front
cover while the luminaire is hot. If you do this:
• The exposed internal components present a risk:, so block public access.
• Ensure that no dust or objects enter the luminaire while it is open.
O p e r a t i o n i n e x t r e m e a m b i e n t
t e m p e r a t u r e s
Do not operate the Cyclo IP65 Directional if the ambient temperature
exceeds 40° C.
Cyclo IP65 Directional luminaires can be operated in ambient temperatures
as low as -20° C (-4° F), but a combination of low temperature and low
dimming level will give a risk of flickering and cause voltage across tubes to
rise. In extreme cases, luminaires will shut down power to tubes to avoid
damage to components. If this happens, luminaires must be reset by
powering them off and on again before tubes can be restarted.
Flickering can be avoided at ambient temperatures below freezing point if
luminaires are operated so that they generate their own heat and maintain
tube temperature at or above freezing point. For best low-temperature
dimming performance:
• As soon as the ambient temperature falls below 0° C (32° F), apply power
permanently to luminaires. If light output is not required, reduce output by
dimming tubes instead of shutting down power completely.
• If flickering occurs when dimming, increase the minimum dimming level.
• If flickering occurs when dimming luminaires after startup, start luminaires
at full power for several minutes.
As a general rule, the higher the light output, the lower the ambient
temperature luminaires can tolerate.
28 Cyclo IP65 Directional user manual