Martin MiniMAC Maestro Bedienungsanleitung PDF herunterladen (Seite 73)

Maintaining the electrical system 73

8. Adjust the straight sides of the seal so that they stick out a little, just

enough so that you can feel the seal when you run a finger across the

joint.

9. Cross-tighten the cover bolts evenly and gradually. The correct torque

for these bolts is 2 Nm (1.5 ft.-lbs.). At this torque, the seal will be

compressed by about one-third.

Adjusting power on 277 volt models

This procedure only applies to models factory wired for 277 V supply (see

the serial number label on the fixture). If the Exterior 600 model is factory

wired for another voltage, see “Adjusting power (on models other than 277

volts)” on page 71.

1. Make sure the Exterior 600 is isolated

from AC power and has cooled for at

least 20 minutes.

2. To open the fixture, remove the 10

Allen screws from the rear cover plate.

Carefully remove the plate and seal.

3. Locate the BROWN wire that connects

the mains filter to the transformer.

Move this wire to the transformer terminal labelled for the desired

setting, 230 or 277 V. Do not move the brown wire that leads to the

ballast.

4. To tap the ballast, move the single BROWN wire to terminal 7 for 60 Hz

operation, or to terminal 10 for 50 Hz operation.

5. Before closing, check the condition of the cover plate seal. Replace with

a new one (P/N 20600020) if the seal is torn, cracked or brittle.

Local AC Transformer Ballast

Frequency Voltage Setting Terminal Setting Terminal

50 Hz 218-241 V 230 V see label 230 V / 50 Hz 10

265-290 V 277 V see label

60 Hz 218-241 V 230 V see label 227 V / 60 Hz 7

265-290 V 277 V see label

Ballast

Tran s-

former

Fuse

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Martin MiniMAC Maestro Bedienungsanleitung Seite 73