Bell System Practices 830 Connections page 6

SECTION 5 12-740-47 1
512-700-100 for detailed information on power supply
applications.
Danger: tFor safety, securely attach
retaining
outlet cover screw BEFORE attempting
to install
power unit and any other cord plugged
into the ac
unplugged
BEFORE
remove the
will prevent the possibility of a loosened
retainer clamp or metallic outlet cover
making contact
on the 85Bl power unit when partially
withdrawn from outlet.
retaining clamp on outlets where cover
mounting screw holds the duplex outlet
in the box
Warning:
trim and
low voltage output terminals of 85Bl
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BSP Sl2-740-471-i06_1979-09-06.jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado
clamp to ac outlet
85Bl power unit.
outlet should always
completely f r o m
attempting to attach
retaining clamp.
with the ac
Do not use
.•
tCare should be taken
dress leads connecting
power unit to assure that inadvertent
connection
other
If m o r e
using plugged
power
The one
units.
be power strips with
outlet r ating
or continuous terminal power strip that
This allows the secondary output terminals
of the
proximity to the ac line source is not
prongs recommended
These sets are not provided with
2.08
cutoff
associated with most CALL DIRECTOR® sets when
using 4A speakerphone. The wiring changes shown
to in the top portion of Table A serve to reduce the
to tone or voice level on incoming calls while in
speakerphone mode.
Feb 23,2012 22:46:51
to conducting
power source does
t h a n o n e p o w e r
into a multiple
strip, there must
inch separation between
Only UL listed
adequate
shall be used.
power unit to
.•
or auxiliary relay optional features
surfaces or
not occur.
unit is
receptacle
be at least
power
receptacle
power
Use o f a
be in close
ringer