Bell System Plant Series Installation And Maintenance Manual

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ELL
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1.
GENERAL
400-TYPE MOUNTINGS AND
ASSOCIATED MODULAR-TYPE KEYS
INSTALLATION AND MAINTENANCE
SEC TION 5 12-2 40- 200
lssu 2, Jon uary 1963
AT&TCo Stondard
1.02
Due to extensive changes marginal arrows
have been omitted.
1.01
This section is reissued to:
• Add information for small capacity mount-
ings.
• Change numerical designation of the
mountings.
• Change information for installing keys and
adjusting counterbalance in large mount-
ings.
2. INSTALLATION
2.01
These mountings may be installed in a desk ,
shelf , or panel cutout. The supporting sur-
face should be smooth and even . The mounting
should lie flat on the supporting surface without
rocking. The flanges should not be inset in the
supporting surface. (See Fig.
1.)
The faceplate
assembly covers the flanges and gives a finished
appearance .
Fig. 1 - Mounting Typical Cutout
©
Am eri can Teleph one nnd T ele~ rnph Company, 19G3
P rint ed in U. S . A.
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