Harrington Signal ASHX-24SMR User Manual

Page 3

Model ASHX PowerTone® Amplified Speaker for Hazardous Location

Document #256881

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Select mounting location.

WARNING

Property damage, serious injury, or death could occur if any
objects are in front of speaker, severely reducing optimum
sound distribution. For maximum effectiveness, ensure that the
front of the speaker is clear of obstructions.

Using the mounting bracket as a template, scribe drill position marks

on the mounting surface. See figure 1 for mounting hole locations and
dimensions

CAUTION

Before drilling holes in any surface, be sure both sides of
surface are clear of anything that could be damaged.

Drill holes at the previously scribed drill position marks to

accommodate 1/2" diameter bolts.

Secure bracket to mounting surface with 1/2" diameter hex head bolts,

lockwashers and hex nuts.

Remove eight 5/16-18 x 1-3/4" hex head bolts, lockwashers and hex

nuts that secure cover to housing and carefully lift off cover.

WARNING

Property damage, serious injury, or death could occur if the
machined sealing surfaces are damaged on this product. To
maintain effectiveness of explosion-proof enclosure, be careful
to avoid damaging the machined sealing surfaces of cover and
housing.

Reattach unit to its mounting bracket with two 1/2-13 hex head bolts,

flat washers and lockwashers previously removed. Position speaker
so as to obtain desired sound coverage then tighten these bolts
securely.

Before reinstalling the housing cover, read Electrical Connections

below and make necessary connections.

Electrical Connection

DANGER

To avoid electrical shock, do not connect wires when circuits
are energized.

National Electrical Code as well as local codes must be adhered to in the
installation of these models. All electrical wiring must be routed through
approved conduit and fittings as specified.

WARNING

Property damage, serious injury, or death could occur if
suitable barriers are not provided for explosive gases and
other atmospheres. To reduce the possibility of explosion when
this unit is used in Class I, Group B atmospheres, the conduit
MUST have a sealing fitting within 18-inches of enclosure. Be
sure to refer to the National Electrical Code or the authorities
having jurisdiction in the area.

Tone card installation

Plug the desired tone card (purchased separately) into the socket as

shown in figure 2.

See figure 3. Connect the device’s red (+) leads to the power source

positive (+) lead. Connect the device’s black (-) leads to the power
source negative (-) lead.

WARNING

Carefully reinstall housing cover using eight 5/16-18 x 1-3/4" hex head

bolts, lockwashers and hex nuts that were previously removed. Verify
that all housing and mounting bolts have been securely tightened.

PTCK Connector kit installation

WARNING

Property damage, serious injury, or death could occur if
independent conductors are terminated together; both wires of
the same polarity must be used as two separate connections.
NFPA 72 requires that the wires be terminated independently
to provide electrical supervision of the connection, for both the
24 Vdc speaker power and 25 VRMS or 70 VRMS audio lines.

Plug the desired PTCK connector card (purchased separately) into the

socket as shown in figure 2.

See figure 4. Connect the device’s red (+) leads to the power source

positive (+) lead. Connect the device’s black (-) leads to the power
source negative (-) lead.

Connect the white leads from the connector card to the audio input

and outputs.

NOTE

Check with authority having jurisdiction for proper application
of EOL resistor and power supervision relay required (see
figure 4).

WARNING

Property damage, serious injury, or death could occur if the
housing is not closed properly. To reduce possibility of
explosion, housing cover must be kept tight (all eight bolts fully
tightened) while circuits are energized.

Carefully reinstall housing cover using eight 5/16-18 x 1-3/4" hex head

bolts, lockwashers and hex nuts that were previously removed. Verify
that all housing and mounting bolts have been securely tightened.

290A2627-13

INSTALL TONE
CARD OR
PICK HERE

RED (+)

BLK (-)

VOLUME
CONTROL

Figure 2: Tone/connector card installation location