Bell System Plant Series Installation And Maintenance Manual

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BELL SYSTEM PRACTICES
Plant Series
COIN TELEPHONE-2A-TYPE
INST ALLA liON AND MAINTENANCE
SECTION
506-328-200
Issue 1 , September 1968
AT&TCo Standard
22-13/32
NOTE.
ALL DIMENSIONS SHOWN
ARE IN INCHES.
Fig. 1-Rear View Showing Dimensi.,ns
• KS-19340 wood booth
• KS-19442 glass deluxe booth
• KS-19426 mounting
• A wall that will allow the phone to be
recesgP.d
BACKBOARDS
When mounting the 2A-type coin
telephone, a vertical surface must be
provided. A tilt greater than 1-1/2
degrees in any direction will cause
malfunction of the telephone. A
vertical surface may be determined
by the following steps:
(1)
Place a spirit level vertically against the
mounting surface with the top end of the
level at the required height of the coin telephone.
(2) Move the top or bottom end of the level
away from the mounting surface as required
to obtain a vertical reading.
(3) When a vertical reading is obtained, the
end of the level opposite the point of contact
shall be no farther from the mounting surface
than described in Table A.
(4) Ensure that a vertical surface 1s obtained
in both directions.
SECURITY STUDS
2.03 Refer to Fig. 2 for mounting screw and
security stud locations in the telephone.
TABLE A
METHOD FOR DETERMINING A VERTICAL SURFACE
SPIRIT LEVEL
MAXIMUM DISTANCE ALLOWED FROM SPIRIT
LEVEL TO MOUNTING SURFACE ON OPPOSITE
LENGTH
END FROM POINT OF CONTACT
18 inches 15/32-inch
24 inches
5/8-inch
30
36
inches 25/32-inch
inches 15/16-inch
Security studs used with 2A-type coin
telephone must have a thread length
of not more than 1/4-inch to avoid
interference with coin chute-totalizer
assembly.
© American Telephone and Telegraph Company, 1968
Printed in U.S.A.
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