Martin MAC 250+ Manual de usuario descargar pdf (Pagina 23)

Service 23

7. Align the screw holes and fasten the lamp access plate with 2 screws.

8. If installing a new lamp, reset the lamp hour and lamp strike counters as described on page 13.

9. Strike the lamp and adjust for optimum performance by turning the three 3mm Allen screws shown in

Figure 12 one at a time until the brightest part of the beam is centered.

10. A hot-spot can be adjusted out with the three Allen screws. Turn the screws an equal amount to

maintain lamp alignment.

Cleaning procedure

Use care when cleaning. 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.

Remove smoke and other residues with cotton swabs or unscented tissues wetted with isopropyl alcohol

99.9%. A commercial glass cleaner may be used, but residues must be removed with distilled water. Clean

with a slow circular motion from center to edge. Remove stuck particles with an unscented tissue or cotton

swab soaked in alcohol. Do not rub the surface: lift particles off with a soft repeated press.

Rinse with distilled water. Mixing the water with a small amount of wetting agent such as Kodak Photoflo will

help prevent streaking and spotting.

To clean the MAC 250 Wash:

1. Disconnect the fixture from power and allow the components to cool completely.

2. Use a vacuum and soft brush to remove any dust from the outside of the fixture and air vents.

3. Remove the head covers using a flathead screwdriver to loosen the four quarter-turn screws.

4. Release the air filter from the lower cover by hooking a fingertip under the edge of its clip and pulling up.

5. Clean the air filter with a vacuum or compressed air. If the filter is contaminated with smoke residue or

other oily substances, soak and squeeze clean in a warm water/detergent solution, then blot dry. If the

filter is not in perfect condition, replace with a new item, available from your Martin dealer.

6. Clean the twin fans in the head (see Figure 13) and the air vents in the head covers with a soft brush or

cotton swab and vacuum.

7. Refit the air filter in the lower head cover by placing the filter in position, then hooking the tab on the filter

clip under the last louver in the air vent and pressing the clip down onto the filter with a fingertip on (A)

until secure (see Figure 14).

8. Carefully clean the optical components.

9. Dry with a clean, soft, lint-free cloth or compressed air.

10. Refit the head covers.

Important! The head cover with the air filter must be fitted over the head fans so that filtered air is

sucked into the fixture.

Figure 13: Head fans

Figure 14: Refitting the air filter

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Martin MAC 250+ Manual de usuario Pagina 23