Valcom v-9925a Service Manual

VSP-V-9925A

Issue 7

V-9925A

LOUD WARBLE RINGER WITH VOLUME CONTROL

5 WATT -24VDC

INTRODUCTION

These instructions contain the specifications and
guidelines necessary to install, operate and maintain
the V-9925A, 5-Watt Loud Warble Ringer with
Volume Control.

SPECIFICATIONS

The V-9925A Loud Warble Ringer is a self-contained
5-Watt electronic ringer which can be used for either
interior or exterior signaling applications. The unit is
designed to allow a loud warble to be broadcast as
long as input signal is present. The input signal
should be interrupted or controlled by the ringing
interval.

Application

• Loud speaker tone signaling for key systems,

intercoms, PABXs

• Outside signaling for incoming calls into a key

system

• Signaling in a noisy environment

Features

• 5 Watt amplifier

• Volume control

• High efficiency horn

• Tone generation circuitry

Coverage

Refer to the following table for speaker coverage.
The first number given is the side to side distance for
mounting the speakers. It is also the distance in front
of the speaker that you can expect to hear a good
quality signal. The second number is the area being
covered in square feet.

Location Distance Area

Quiet 220 ft. 48,400 sq. ft.
Moderate 160 ft. 25,600 sq. ft.
Noisy 80 ft. 6,400 sq. ft.
Very Noisy 40 ft. 1,600 sq. ft.

Environmental

• Temperature: -20 to +55°C

• Humidity: 0 to 95% (non-precipitating)

Dimensions/Weight

• 6.50"H x 8.20"W x 10.40"D,
plus mounting base
(16.51cm H x 20.83cm W x 26.42cm D)

• 3.6 lbs. (1.63kg)

Signal/Power Requirements

• Power Supply: -24VDC, 500mA ("B" Battery)
(10 Valcom power units)

• Signal Source: 105VAC or 20VAC

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Wiring Requirements

Due to the small amount of signal and power
required, wiring may be accomplished through station
or other suitable wire. When using "D" type station
wire, limit the wire run to 500 feet. Two Loud
Warble Ringers may be connected to the same
cabling if the total run length is less than 250 feet.
When a remote power unit is used, signal input leads
should be limited to 5000 feet and a maximum of 6
ringers.

INSTALLATION

Connections

Connect station or other suitable wire to the leads as
follows:

White -24VDC
Black Ground
Brown Sig. Common
Red 105VAC input
Green 20VAC input

NOTE: Use either the 105VAC or 20VAC input,
not both.

When used in conjunction with a buzzer, connect the
buzzer leads to the brown and green leads. When
used with a ringer, connect the ringer leads to the
brown and red leads.

Attaching Speaker to Base

NOTE: For ease of installation, the base can be
attached to the speaker before or after the base is
attached.

• Loosen position adjustment knob.

• Insert the ball of the base into the socket of the

speaker.

• Tighten the position adjustment knob.

Mounting

The V-9925A should be mounted 16 to 40 feet above
the floor to allow for best sound distribution. The
unit can be mounted to a wall, a beam or an electrical
box.

• Mount the base to a wall using the two holes

provided. Knockout holes are provided for
punchout should additional holes be desired.

• A "C" clamp is provided with the ringer to allow

mounting to a beam. Place the bolt through the
hole in the bottom of the base to secure the "C"
clamp to the beam (see Figure 1).

• Connection to an electrical backbox is

accomplished by channeling wire through the
ball of the base and making appropriate
connections (see Figure 2). The base has holes
punched for a double-gang square box, but by
punching out additional knockout holes, the base
can be mounted to a single-gang or octagon box.

The V-9925A may be rotated or moved up and down
to obtain the desired position by loosening the knob
at the bottom of the unit approximately 1 turn (see
Figures 1 and 2). Make required adjustment and
re-tighten knob.

TECHNICAL ASSISTANCE

When trouble is reported, verify -24VDC power is
being applied to the unit and that the white wire has

-24VDC battery and the black wire is at ground
potential. Using a VOM, verify that 105VAC or
20VAC is being applied to the signal leads. Check
the volume adjustment on the control unit to make
certain it is set at the proper level.

Assistance in troubleshooting is available from the
factory. When calling, you should have a VOM and a
telephone test set available and be calling from the
job site. Call [phone] for Technical Support
or call [phone] for Valcom 24-hour Faxback
System or visit our website at
http://www.valcom.com.

Valcom equipment is not field repairable. Valcom,
Inc. maintains service facilities in Roanoke, VA.
Should repairs be necessary, attach a tag to the unit
clearly stating company name, address, phone
number, contact person and the nature of the problem.
Send the unit to:

Repair and Return Dept.

Valcom, Inc.

5614 Hollins Road

Roanoke, VA 24019-5056

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