2
OPERATING INSTRUCTIONS
TO PLACE A CALL TO THE REMOTE
HANDSET UNITS:
At the remote door entrance station, depress button (for a
few seconds) for apartment you wish to call. This will signal
the Alphatone™ signal at the apartment monitor handset,
and will cause the video screen to light and display the visitor.
The tenant may choose to ignore the caller, or to lift the
intercom handset to answer. Tenant may speak to the visitor
by simultaneous 2-way (DUPLEX) voice. If tenant is
satisfied with identity of caller and wishes to let visitor into
the building, tenant shall momentarily depress the door
release (KEY) button on the handset, which will electrically
activate the door release mechanism.
Monitor will time-out automatically after approx. 40 seconds
(unless the time-out duration has been changed by the
installer/user).
TROUBLESHOOTING
If the system fails to operate as required, review operating
instructions again. If the equipment fails to operate as
indicated in the instructions, check the following points:
1. ENTIRE SYSTEM DEAD:
Check for 24VAC at the
T2440 secondary and 12VAC at the T1240 secondary;
wiring between transformer(s) and power supply unit(s);
connections at main power supply units, 117VAC at
transformer primaries. Check for 20VDC (output) across
terminals (+) and (-) on the VCU309 power supply.
2. NO CALL UP TONE AT HANDSET:
Check that
the 50-ohm speaker in the handset base is functioning.
Temporarily switch handset with one from a functioning
location. Check wiring connections at remote handset.
Check that entry station pushbutton is making contact,
by shorting out the two (2) wires on the back of the
button.
3. NO PICTURE AT MONITOR:
If screen is NOT
LIGHTING UP, check for approximately 20VDC at
(
+
) and (
-
) terminals on monitor PC board (VH309B).
Check Brightness and Contrast controls on front of
monitor. If screen IS LIGHTING UP but there is no
picture, you probably are not getting a video signal from
the camera to the KBS-1 converter. Starting at camera,
check for video signal through coax cable. Check for
approx. 15VDC input power at each VBV-4 video data
distributor (if used). Check coax connector at entry
camera to make sure it is not shorted or open. Tempo-
rarily switch monitor PC board (VH309B) with one
from a functioning location. Make sure input voltage on
the KBS-1 is 15VDC and not 12VDC.
DOOR RELEASE
Run 2 cond. #18 from the door release location to the
NH209TTA speaker/microphone assembly. Route away
from any station wiring. Note: if wire run is longer than 50 feet
(15m), use #16AWG cable.
CONNECTIONS
Before connecting, make certain wires are free from shorts
or grounds. Make connections as shown on the enclosed
system diagrams, and as indicated below.
NOTE: Please keep in mind that all wiring terminals
shown may not be in the actual order in which they
appear on the equipment.
This is done for clarity of
wiring diagram purposes.
TRANSFORMER
1. Connect the 24VAC (T2440) transformer to the VCU309
power supply, where indicated. Do not use transformer(s)
to power any other device(s).
2. Connect the 12VAC (T1240) transformer to the
NH209TTA speaker/microphone assembly, where indi-
cated. Do not use transformer(s) to power any other
device(s).
3. Do not connect transformer primary to 117 VAC until
entire installation is complete and all wiring is checked.
DOOR RELEASE
1. Connect the 12-16 VAC electric door opener using 2
conductor #18AWG (polarity not important). Route away
from any station wiring. Note: if wire run is longer than 50
feet (15m), use #16AWG cable.
FINISH INSTALLATION
1. Install all components. Do not overtighten screws.
2. Connect primary of all transformers to 117 VAC.
Observe all local and national electrical codes.
TEST AND CHECKOUT
1. At all remote handset stations, make certain the
handsets are completely hung-up on the handset cradle.
2. Check each handset unit in the system for
operation in accordance with the operating instructions.
3. Check for proper door release function (on systems with
door release capability.
NOTE: System warranty is void if this system is installed
or used in any manner other than described in this
manual.
