Alpha Communications HT3009 Series Installation And Use Instructions - Page 3

Browse online or download pdf Installation And Use Instructions for Intercom System Alpha Communications HT3009 Series. Alpha Communications HT3009 Series 4 pages.

Print Page

DZ209 diode board(s) behind the door entry station are

connected properly. The 'HT' side of the DZ209 should

connect to the selective 'II' terminals from the remote

handsets. The 'T' side of the DZ209 should connect to the

selective terminals from the door entry station push

buttons. Make sure diodes on the DZ209 all have the

striped sides facing the correct way and they are all facing

the same way.

3. NO VOICE ON SYSTEM: Check volume control (poten-

tiometers) on NH209TT amplifier (in both directions; up

and down). Check terminals to handsets. Check speaker/

microphone connections at each entry door station. Con-

nect a single handset at the NH209TT for testing. If voice

is working, amplifier and entry speaker/microphone are

O.K., so check riser wiring. If not, amplifier or speaker/

microphone could be faulty. Check by replacement.

4. UNABLE TO RELEASE DOOR STRIKE: Check wiring

to handset terminals 'I' and 'II'. Temporarily remove both

door opener wires going to amplifier terminals '3' and '4'

and touch to terminals '1' and '2' on amplifier. Check

operating voltage of door opener matches output from

system amplifier. Check wiring (and gauge) to door

opener, from amplifier/power supply. When using a

magnetic type lock or other 'fail-safe' type door lock, you

should use a reversing relay, such as our model# PK407A

for each entrance.

5. HUM OR BUZZ: Check system wiring installed too close

to power wiring or electrical devices or transformers;

check transformer(s) installed too close to control equip-

ment (should be at least three (3) feet away). Wiring is

being run next to wiring for other systems and/or devices.

6. SQUEALING OR HOWLING: Check amplifier volume

control(s) set too high; check for loose speaker/micro-

phone at door entry station.

7. UNABLE TO TALK TO DOOR STATION: Check

terminals 'I' and 'II' going from handsets to amplifier and

DZ209 diode boards for continuity and shorts, grounds,

etc. Check for proper functioning of door entry station

speaker. Check for approx. 16 ohms between terminal '11'

and '12' on speaker microphone (with system wiring

disconnected).

8. UNABLE TO LISTEN TO DOOR STATION: Check

terminals 'I' and 'II' going from handsets to amplifier for

continuity and shorts, grounds, etc. Check for proper

functioning of door entry station microphone.

If these checkpoints fail to indicate the problem,

there may be an equipment fault. Contact the factory

or qualified service representative.

INSTALLING THE R2007 AlphaTone™: When you

wish to replace the standard AC buzzer in the HT3009 series

handsets with the optional model R2007 AlphaTone™ unit,

please follow these instructions: (for HT2009 series hand-

sets see wiring diagram# AWD077).

1. Locate the silver AC buzzer in the lower left portion of the

handset base. Remove the set screw (and keep it for re-

use).

2. Gently pull up the two (2) wires from the buzzer that are

attached to the internal p.c. board. Carefully slide the wires

off of the connecting posts.

3. Install the R2007 AlphaTone™ in place of the buzzer,

using the buzzer set-screw.

4. Install the two (2) wires onto the p.c. board, using the

same connecting posts that the buzzer used. Polarity

does matter. If the R2007 unit fails to signal when called

from the door entry push button, reverse the two (2) wire

leads and try again.

5. Position the wires inside the handset base, so they will not

get 'pinched' when the cover is placed over the base.

6. Using a small screwdriver, you can change the AlphaTone's

sound, by adjusting the built-in potentiometer found on the

p.c. board of the R2007.