Martin MiniMAC Maestro Manual de usuario descargar pdf (Pagina 67)

Lamp maintenance 67

6. Remove the old lamp from the

socket.

7. Holding the new lamp by its ceramic

base - do not touch the glass -

insert it firmly and squarely into the

lamp socket.

8. Clean the glass bulb with the wipe

supplied with the lamp, particularly

if your fingers touched the glass. A

clean, lint-free cloth wetted with

alcohol may also be used.

9. Re-insert the lamp assembly. Replace the 2 Phillips screws.

10. The lamp holder is adjusted at the factory; but precise alignment may be

necessary due to slight variations between lamps:

a. Apply power to the fixture.

b. Center the hot-spot (the brightest

part of the beam) by turning the 3

Allen/hex screws one at a time to

move the hot-spot diagonally

across the beam. If there is no

hot-spot, adjust until the light is

even.

c. To reduce the hot-spot, pull the

lamp back towards you by turning

all three Allen screws clockwise 1/4-turn at a time until the light is

evenly distributed.

d. If the light is brighter around the edge than it is in the center, or if light

output is low, the lamp is too far back in the reflector. Move the lamp

forward by turning the adjustments screws counterclockwise 1/4-turn

at a time until the light is bright and evenly distributed.

e. Disconnect the fixture from power and allow to cool.

11. Check the condition of the lamp access seal. Replace with a new one

(P/N 20620050) if the seal is torn, cracked or brittle.

12. Place the seal on the back of the lamp access plate. Insert the 4 Allen

screws through the plate and install. Cross-tighten the Allen screws

evenly, increasing torque gradually to the correct setting of 2 Nm (1.5 ft.-

lbs.). At this torque, the seal will be compressed by about one-third.

13. Tilt the rear section into position and replace the long bolt and lock nut.

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Martin MiniMAC Maestro Manual de usuario Pagina 67