Harman Martin ELP WW IP, User Manual

Page: 26 / 39

26 Martin® ELP WW IP User Manual
Service and maintenance
Warning! Read
‘Safety information’ on page 6 before servicing the fixture.
Refer any service operation not described in this user manual to a qualified
service technician.
Excessive dust, smoke fluid, and particle buildup degrades performance,
causes overheating and will damage the fixture. Damage caused by inadequate
cleaning or maintenance is not covered by the product warranty.
Disconnect mains power before cleaning or servicing the fixture.
You can rinse the fixture with water, but do not use high-pressure water or air
jets during cleaning.
Service fixtures in an area where there is no risk of injury from failing parts, tools
or other materials.
Cleaning
The cleaning of external optical lenses must be carried out periodically to optimize light output.
Cleaning schedules for lighting fixtures vary greatly depending on the operating environment. It is
therefore impossible to specify precise cleaning intervals for the fixture. Environmental factors that
may result in a need for frequent cleaning include:

Use of smoke or fog machines.

High airflow rates (near air conditioning vents, for example).

Presence of cigarette smoke.

Airborne dust (from stage effects, building structures and fittings or the natural environment at
outdoor events, for example).
If one or more of these factors is present, inspect fixtures within their first 100 hours of operation to
see whether cleaning is necessary. Check again at frequent intervals. This procedure will allow
you to assess cleaning requirements in your particular situation. If in doubt, consult your Martin
dealer about a suitable maintenance schedule.
Use gentle pressure only when cleaning, and work in a clean, well-lit area. Do not use any product
that contains solvents or abrasives, as these can cause surface damage.
To clean the fixture:
1. Disconnect the fixture from power and allow it to cool for at least 10 minutes.
2. Vacuum or gently blow away dust and loose particles from the outside of the fixture and the air
vents at the back and sides of the head and in the base with low-pressure compressed air.
3. Clean the lens by wiping gently with a soft, clean lint-free cloth moistened with a weak
detergent solution. Do not rub the surface hard: lift particles off with a soft repeated press. Dry
with a soft, clean, lint-free cloth or low-pressure compressed air. Remove stuck particles with
an unscented tissue or cotton swab moistened with glass cleaner or distilled water. You can
remove the lens tube to clean the rear side of the lens if needed.
Pressure relief valves
A valve with a gas-permeable but waterproof membrane manufactured by Gore equalizes
pressure by allowing air and water vapor to pass into and out of the fixture when it heats up and
cools down, but it acts as a barrier to water in liquid form. The expulsion of warm air (with a slightly
higher water vapor content) and intake of cool air (with a slightly lower water vapor content)
prevents humidity buildup over time, provided that the valves work correctly and that the fixture is
correctly sealed.
Valves become blocked over time as the micropores in the membranes fill with dirt particles. If a
valve becomes blocked, excess pressure can cause water to be sucked into the fixture and
damage seals. Valves cannot be cleaned
– they are service items that require occasional
replacement. It is impossible to give precise replacement intervals because environment and
conditions of use vary, but if the fixture is used in an environment where airborne dust or dirt is
present, we recommend that you replace the valves with their rubber seals at each major service