Harrington Signal SPHX-DVSMR - Manual (Page 2)

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256883 SPHX Instruction Sheet
lockwashers that secure mounting bracket to unit.
b. 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.
c. 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.
d. Drill holes at the previously scribed drill position marks
to accommodate 1/2" diameter bolts.
e. Secure bracket to mounting surface with 1/2" diameter
hex head bolts, lockwashers and hex nuts.
f. 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 care-
ful to avoid damaging the machined sealing surfaces of cover
and housing.
g. 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.
h. Before reinstalling the housing cover, read paragraph
C.3. Electrical Connections below and make necessary connections.
3. Electrical Connections.
DANGER
To avoid electrical shock, do not connect wires when circuits
are energized.
National Electrical Code, as well as local codes, must be
followed during installation of these models. All electrical wiring must be
routed through conduit and fittings approved for explosion-proof instal-
lations.
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.
a. Connect audio leads, common leads (-) to common
terminal and positive (+) leads to desired wattage terminal (see figures
2 and 3).
WARNING
An uninsulated section of a single conductor must NOT be
looped around a terminal and used as two separate connec-
tions. NFPA 72 requires that the wire is severed to provide
electrical supervision of the connection.
b. Connect green or red lead found in the speaker to 25 V
or 70 V terminal as appropriate, see Figure 3.
Figure 1. Model SPHX Speaker Dimensions.
A B C D E F G H I
14.75 in. 14.75 in. 8.312 in. 0.500 in. 8.375 in. 8.875 in. 4.500 in. 2.500 in. 0.531 in.
37.5 cm. 37.5 cm. 21.1 cm. 12 mm. 21.3 cm. 22.5 cm. 11.4 cm. 6.35 cm. 13 mm.
A
B
C
D
E
F
G
H H I DIA.
3 HOLES
290A2627-01
PIPE
THREAD