Whelen HWLRB4 - Manual (Page 2)

Page 2
SPEAKER
C L A M P
5/16 - 18
Elastic
Stop Nut
5/16 Flat
Washer
5/16 - 18 X 1-1/4
Hex Head Bolt
SPEAKER
C L A M P
MOUNTING
STRAP
(QTY 2)
Siren
Speaker
5/16 -18 X 1-1/4
Hex Head Bolt
5/16 Flat
Washer
5/16 - 18
Elastic
Stop Nut
Fig. 1
A
C
Fig. 2
Bracket slides
behind fender
support.
Bracket slides
behind fender
support.
B
Bracket slides
behind fender
support.
Use the
existing
bolt
Fig. 3
Secure
with existing
hardware
Front of
vehicle
Front Support
Bracket
Existing
Hardware
Existing
Hardware
C
A
B
Supplied
Hardware
5/16-18
Elastic Stop Nut
5/16-18
Elastic Stop Nut
1/4-20
Elastic Stop Nut
5/16-18
Elastic Stop Nut
5/16 Flat Washer
5/16
Flat
Washer
Spacer
5/16-18 x 1 3/4"
Hex Head Bolt
5/16-18 x 1 1/4"
Hex Head Bolt
5/16-18 x 1"
Hex Head Bolt
1/4-20 x 1"
Hex Head Cap Screw
1/4 Flat Washer
(3/4" O.D.)
5/16 Flat Washer
(3/4" O.D.)
Mounting Bracket
Speaker Clamp
Mounting Strap
IMPORTANT! READ THESE
WARNINGS BEFORE CONTINUING!
The Howler™ Supplemental Siren was designed for use in high-risk areas such as an
intersection. It is not intended to be, nor should be operated as, a replacement or
alternative to the vehicle’s primary siren.
The low-frequency tones of the Howler™ demonstrate significantly different audio
characteristics as compared to those of a traditional higher-frequency siren. While the
low-frequency tones are better able to penetrate other vehicles, thus alerting drivers to
the presence of the responding emergency vehicle, these tones may also penetrate into
the responding vehicle itself. This could potentially expose the operator to increased
noise levels.
To help eliminate overexposure, the Howler™ siren has been designed with a built-in
timing circuit. The Occupational Safety & Health Administration (OSHA) (www.osha.gov)
provides information necessary to determine safe exposure times in Noise and Hearing
Conservation, Section 1910.95 (Occupational Noise Exposure). Until you have
determined the safe exposure times for your specific application, this siren should be
configured for the minimum operating time and operators should be required to use an
approved hearing protection device. FAILURE TO FOLLOW THIS RECOMMENDATION
COULD CAUSE HEARING LOSS!
Installation:
The passenger and driver side siren speaker brackets both mount in the
same manner.
1. Secure the mounting straps to the speaker by securing the speaker clamp
using the supplied hardware (Fig 1).
IMPORTANT! The slotted holes in the siren speaker must face down
(towards the road) when mounted so that water will not be trapped inside.
2. Secure the mounting bracket to the vehicle. The installation uses 2 existing
bolts and one supplied bolt (Fig. 2). Remove bolts “B” and “C” from the
vehicle.
3. Place the siren bracket into it’s mounting location and replace bolt “C” and
then bolt “B” and tighten securely.
4. Insert bolt “A” (supplied) and tighten all 3 bolts firmly.
5. Secure the speaker clamp (with speaker) to the mounting bracket and
tighten securely.
6. For the last step, you will add the spacer (between the top tabs of the
mounting straps) while installing the front support bracket. The front support
bracket secures to the front of the vehicle (just behind the headlight) using
existing hardware. The front support bracket will line up with the existing bolt
you will use.
7. Extend the BLACK (-) negative and WHITE (+) positive wires to your siren
amplifier and connect as described in the amplifiers instructions.
IMPORTANT! It is the responsibility of the installation technician to make sure that the installation and operation of this product will not
interfere with or compromise the operation or efficiency of any vehicle equipment!
IMPORTANT! Before returning the vehicle to active service, confirm the proper operation of this product, as well as all vehicle components/
equipment