Caution

Refer to the First Time Activation note in the section “Operating the Screen.”

Installing the low-voltage 3-button switches (horizontal)

There are three low-voltage controls mounted on a board. Each low-voltage control allows the use of low-voltage wire to connect to the supplied 3- position 24V momentary wall switch. The top low-voltage box controls the mask, the middle box controls the screen, and the bottom box, nearest the J-boxes, controls the door. Refer to Figure 5.

Note: The board can be mounted near the screen, or by adding extra cable, you can mount it farther away.

Preparing the connection

Before making the electrical connections, you need:

‹An available AC constant power source

‹A 4-conductor switch hook-up cable (4-conductor bell wire or category 5 cable is typically used for long runs)

‹Cat 5, multi-conductor unshielded, or similar type electronic cable can be used to connect the 3-button switch to the LVC. The recommended wire gauge is 20 to 24 AWG. Use plenum-rated cable when required.

Making the connection

Figure 6, on the following page, illustrates the connections.

Note: The electrical housing has a 2-gang J-box. For a top view, refer to Figure 4.

1.Connect the 8-conductor cable to the connection harness coming from the J-box labeled “switch input” on the screen unit.

Note: Use a longer cable to mount the low-voltage control board further from the screen unit.

2.Connect the 4-conductor cable to the connection harness coming from the low-voltage control board.

3.Connect the hookup cable to the 3-button switch.

4.Connect the main AC power source to the the low-voltage board.

5.Connect the main AC power source to the the J-box labeled “main AC power connection” on the screen unit.

6.A parallel connection to an outboard audio-visual switching network can be made at this time. (optional)

ABT-EM Trapdoor ElectriMask Electriscreen: Owner’s Manual

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Stewart Filmscreen Corp LCD Front Projector Installing the low-voltage 3-button switches horizontal, Making the connection
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