GAI-Tronics 12250-004 Volume Level Control Receiver Assembly (24 V dc) - Manual (Page 6)

Pub. 42003-204A
M ODEL 12250-004 V OLUME L EVEL C ONTROL R ECEIVER A SS ’ Y (24 V DC) R EPLACEMENT K IT Page: 6 of 6
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15. Connect the purple wire from the front panel to E7 on the PCBA, if applicable. On PCBA assembly
69701-015, connect one of the magnetic reed hookswitch wires from the front panel to E7 on the
PCBA. Connect the other wire to E5 on the PCBA. On PCBA assemblies, (69701-011 and
69701-015) ensure that the clip is bent inward to the board to prevent shorting any adjacent
component.
16. Place the VLC mounting flange between the chassis and the PCBA, and align it with the holes. Insert
two 6-32
× 1/4-inch screws, and tighten them. Recheck the purple wire at E7 of the PCBA for
clearance from adjacent components, if applicable.
17. If the unit has a handset, pick up the front panel, and position it so the remaining handset wires can be
hooked up to the PCBA. For ease of installation, the handset wires are color coded as follows:
White E1
Black E2
Green E3
Red E4
Yellow E5
Blue E6
18. Reinstall the transformer on the chassis using the 2 screws removed previously. The blue and brown
wires on the transformer should be facing up, or the chassis will not close.
19. Reconnect the 6-pin Molex connector to the PCBA.
20. Dress the VLC wires, and secure them with the tie wrap included in this kit.
21. Mount the front panel to the chassis, and tighten the 4 screws.
22. Plug the amplifier into the enclosure, and tighten the 4 screws.
N OTES :
1. Speaker adjustment for normal operation remains under the nameplate on the front panel and does not
change with the addition of the VLC. The speaker adjustment for the VLC is factory set and can be
varied by adjusting the level potentiometer on the VLC assembly.
2. When an alarm is broadcast and is accompanied by a VLC (50 kHz) signal on the page line, it triggers
the volume on the Page/Party
®
VLC amplifier to increase. GAI-Tronics Model 800 and 1200 Series
cone speaker assemblies are normally used for indoor applications with low ambient noise, such as
offices, corridors, and control rooms. These speakers have a manual, wall-mounted remote volume
level control.
When these speakers are powered by a Page/Party
®
VLC amplifier, and the volume level is manually
turned down using the wall-mounted remote volume level control, the signal that increases the volume
on the VLC amplifier will not bypass the manual setting. These speakers remain “turned down,”
regardless of the output signal of the amplifier, and the alarm broadcast level does NOT increase on the
cone speaker assemblies.
The Model 800 and 1200 Series speakers can be used in emergency notification systems; however, we
suggest that the customer NOT install the wall-mounted remote volume level control for this type of
application.
3. DO NOT READJUST the frequency potentiometer on the VLC assembly.