Lamp; About The Discharge Lamp; Lamp Replacement - Martin MAC 700 PROFILE User Manual

Lamp

About the discharge lamp

The MAC 700 Profile is designed for use with an OSRAM HTI 700 W/D4/75 lamp. This highly efficient
double-ended short-arc source provides a color temperature of 7380 K, a color rendering index of 75, an
average service life of 750 hours and hot restrike.
Note that lamp power is automatically reduced to 400 W after 10 seconds when the fixture is blacked out
with the dimmer. This enhances lamp life. The lamp returns to 700W as soon as the dimmer is opened.
Warning! Installing any other lamp may create a safety hazard or damage the fixture!
To reduce the risk of explosion, replace the lamp when it reaches the limit of its average service life, i.e.
when usage reaches 750 hours. Never exceed the lamp's average service life by more than 10%. To read
lamp hours from the control panel, please refer to "Readouts" on page 13. Replace the lamp immediately if
it is deformed or in any way defective.
For maximum service life, avoid dousing the lamp before it has warmed up for at least 5 minutes.

Lamp replacement

Important! Do not touch the quartz bulb with bare fingers. Wear safety glasses and gloves when
handling lamps.
Replacement lamps are available from your Martin dealer (P/N 97010212).
The clear quartz bulb must be clean and free of any oils from your fingers. Clean the lamp with an alcohol
wipe and polish it with a dry cloth, particularly if you accidentally touch the bulb.
To repl ace the lamp
1. Disconnect the fixture from power and allow it to cool for at least 45 minutes or until the lamp access
plate is cool enough to touch. Lock the head right-side up.
2. Release the 4 quarter-turn fasteners marked with arrows on the lamp access plate, as shown in Figure
1. Pull the lamp assembly straight back as far as it goes and let it rest in place.
3. Push down the retention spring on the right end of the socket and push out the pin. You can use a
screwdriver to gently pry the lamp out of the socket as shown in Figure 2. Remove the lamp.
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Figure 1: Lamp access
MAC 700 Profile
Figure 2: Lamp removal