Connection Of Power Failure - Panasonic Easa-Phone VA-824 Installation And Programming Manual

6. CONNECTION OF POWER FAILURE UNIT
Power Failure Unit (PFU) is optional equipment which, in case of power failure, directly connects CO/PBX lines and
Single
Line Telephones.
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Wall mounting method for PFU
@ Remove a PFU cover.
@ Install one wood screw on the wall remaining about 5/16 inches of the screw length unscrewed.
@ Hook the mounting hole provided at the top of the PFU to the on-wall installed wood screw, then fasten the wood screw
completely.
@ Install two wood screws on the wall through the two respective mounting holes provided at the bottom of the PFU.
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Connection of PFU
(1) Connect the connectors labelled "FROM COL" (COL 1 to 4) and located inside the power failure unit to the respective
central office lines.
(2) Connect COL Nos. 1, 2, 3 and 4 inside the key service unit to the connectors (4 places from the top) labelled "TO COL
(KSU)" and located inside the power failure unit, respectively.
(3) Connect the connectors (4 places from the top) located on the card of the SLT card (right side card), which is set inside
the key service unit, to the connectors labelled "FROM SLT-LC(KSU)" and located inside the power failure unit, respec-
tively.
(4) Connect the connectors (TELs 1 to 4) labelled "TO SLT" and located inside the power failure unit to the respective single
line telephones. These connectors are allotted, in order from the top, Extensions Nos. 30,31,32 and 33.
(5) Connect the two screw terminals labelled "PFU" and located inside the key service unit to the respective two screw
terminals labelled "TO KSU" and located inside the power failure unit.
(6) Remove the clamp plate, insert the cords, then reinstall the clamp plate over the cords and secure into place with the
screw.
Note: That when power failure occurs the COLs correspond to EXTs as shown below.
COL I-+ EXT. No. 30
COL 2 -+ EXT. No. 31
COL 3 + EXT. No. 32
COL 4 + EXT. No. 33
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