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6 Repair
6.1 Timing Belt
To replace the timing belt:
1. Disconnect and lock out power to the beacon.
2. Disconnect the two lamp wires from the control panel. Refer to Section 7
for the wiring diagram.
3. Loosen the four screws on the motor, with a 5/32" Allen wrench and 3/8"
wrench.
4. Slide the motor to the right and remove the old belt.
5. Install the new belt.
6. Tighten the belt by sliding the motor to the left. The belt should have 1/8"
deflection. Do not over tighten the belt.
7. Reconnect the two lamp wires to the control panel.
8. Reconnect power to the beacon.
6.2 Mercotac rotary electrical connector
Perform the following steps to replace the mercotac rotary electrical connector:
1. Disconnect and lock out power to the beacon.
2. Disconnect the two lamp wires from the control panel. Refer to Section 7
for the wiring diagram.
3. Remove the two wires from the bottom of the coupling.
4. Loosen the cap screw in torque arm, and remove the torque arm.
5. Loosen the setscrew in the bottom of the main shaft, and remove the
mercotac rotary electrical connector.
6. Remove the two wires from the top of the mercotac rotary electrical
connector.
7. Place the black wire on the center tab of the new mercotac rotary electrical
connector, and place the white wire on the outer tab of the new mercotac
rotary electrical connector.
8. Reinsert the mercotac rotary electrical connector in the shaft, and tighten
the setscrew. (NOTE: Do not over tighten.)
9. Reinstall the torque arm, and tighten the cap screw. (NOTE: Do not over
tighten.)
10. Place the black wire on the center tab of the mercotac rotary electrical
connector, and the white wire on outer tab of the mercotac rotary electrical
connector.
11. Connect the two wires to the control panel. Make sure they are connected
to the original terminals. (NOTE: The black wire connects to the upper
terminal, and white wire connects to the lower terminal.)
14
Hali-Brite® L-801H(L) Installation and Maintenance Manual
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