Cleaning - Martin MAC 250 ENTOUR User Manual

power and allow it to cool for at least 45 minutes before proceeding. Wear safety goggles
to protect your eyes.
1. Locate the lamp access cover at the back of the fixture head and remove the two Phillips screws.
2. Pull out the lamp socket.
3. If changing the lamp, remove the old lamp from the socket.
4. Holding the new lamp by its ceramic base (do not touch the glass), align the small pin on the lamp with
the small hole in the socket and insert the lamp squarely. Make sure that the 4 small projections on the
base contact the face of the socket.
5. Clean the glass bulb with the cloth supplied with the lamp, particularly if your fingers touched the glass.
A clean, lint-free cloth wetted with alcohol may also be used.
6. Insert the lamp into the fixture with as little twist in the lamp wires as possible.
7. Align the screw holes and fasten the lamp access plate with 2 screws.
8. If replacing the lamp, reset the lamp hour and lamp strike counters as described on page 12.
9. Strike the lamp (after setup is complete) and adjust it for optimum performance by turning the three 3mm
lamp adjustment Allen screws one at a time until the brightest part of the beam is centered.
10. If necessary, turn the three screws an equal amount in or out to remove any hot-spot.

Cleaning

Cleaning schedules for lighting fixtures vary greatly depending on the operating environment. It is therefore
impossible to specify precise cleaning intervals for the MAC 250 Krypton/Entour. Cooling fans suck in
airborne dust and smoke particles, and in extreme cases fixtures may require cleaning in less than 50 hours
of operation. 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, for example).
If one or more of these factors is present, inspect all fixtures within their first 50 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.
O P T I C A L C O M P O N E N T S
Use care when cleaning optical components. The surface on dichroic filters is achieved by means of special
multi-layer coatings and even small scratches may be visible. Residues from cleaning fluids can bake onto
components and ruin them.
1. Allow the components to cool completely.
30
3
mm
#2
Figure 5: Lamp installation
MAC 250 Krypton/Entour