c. Replacement of Cable Straight Plugs
b. Convenience Outlet Replacement. Power is provided
b y the A-phase circuit breaker to the convenience recep-
(1) Remove plug by loosening screws on clamp and
tacles on the step end of the central. Power is provided by
unscrew connector, exposing soldered wires in cups.
the C-phase circuit breaker to the center console end of the
central. Replace the convenience receptacle as follows:
(2) Apply a soldering iron to each cup until connec-
tions pull free. Remove old plug.
( 3 ) Dress or cut back wire ends and tin ends for
(1) Set the proper circuit breaker to OFF.
(2) Remove the six sets of hardware holding the
(4) Solder wires to new connector; connect per
t e l e p h o n e mounting panel assembly to the electrical duct
extension. Pull the telephone mounting panel out and set it
wiring diagram figure 5-2 for particular cable being repaired.
(5) Screw connector body together and tighten
aside as far as possible without putting too much tension
screws on cable clamp.
on telephone wires.
(3) Press in sides of retainer clip using hard surfaced
5-7 REPLACEMENT OF UPPER AND LOWER CABINET
tool and pull convenience outlet away from the duct exten-
C O M P O N E N T S . The following paragraphs provide the pro-
sion as far as possible without putting too much tension on
cedure for replacement of shelf-type storage cabinet
(4) Cut one wire of the convenience outlet and con-
nect the corresponding wire of the new outlet to its corre-
a. Spring-Loaded Plunger.
sponding duct wire using a solderless butt connector.
(5) Repeat step (4) for the two remaining outlet
(1) Open cabinet door and remove shelf having
defective plunger by pulling both plungers out of the
(6) Fit new convenience outlet to hole in duct exten-
cabinet holes and sliding the shelf out of cabinet.
sion and snap outlet in place.
(7) Replace hardware and reset circuit breaker.
( 2 ) Grasp plunger knob and pin using two pairs of
5-6 REPLACEMENT OF
(3) Pull knob and pin apart while flexing knob a few
C A B L E . Replacement of all intercommunication cables
a n d cable straight plugs is similar. Refer to figure 5-2.
(4) Remove and discard knob, pin, and spring.
Replacement procedures are as follows:
Removal of Cables.
If old standoff is not damaged, do not perform
(1) Disconnect telephone power plug.
step (5); proceed to step (7).
( 2 ) Disconnect both straight plugs of the cable at
telephones. If one straight plug goes through cable access
(5) Remove standoff from pin side of shelf using a
hole, pull cable past the boot and out of the access hole. If
one straight plug goes to the feed-thru assembly, disconnect
(6) Install new standoff through hole in shelf. Using
the plug from the feed-thru assembly.
a flaring tool and a backup tool, flare end of standoff (a
( 3 ) If cable runs through the shelter cable trough
3/4-inch diameter ball bearing will serve as a flaring tool).
(7) Insert new spring into end of standoff.
( s k i d ) , remove shelter duct access covers as required to
( 8 ) Install new pin and knob into standoff. While
h o l d i n g knob on pin in alignment, press them together
using a bench vise.
(1) Run cables through shelter cable trough if
required; replace all access covers.
(2) Connect both straight plugs of cable to tele-
It is important that the knob and pin be aligned
phones and/or feed-thru, etc., if required.
with each other to ensure proper fit.
(3) Reconnect power plug of telephone.