Avaya EA401 - Manual (Page 9)

Avaya Inc.
Installation and Operation
Model EA401
Page 9
Fuse Replacement
• Disconnect the telephone from tip and ring power supplied by the PABX or
central office before attempting to replace the fuse.
See: Figure 5 - Fuse
Replacement
• Remove the 1/2” NPT close up plug (item A) with a 1/4” Allen key.
• Remove fuse holder cap (item B) with a flat blade screwdriver. Rotate fuse
holder cap 1/4 turn counterclockwise (to the left) to remove.
• Remove fuse (item C) from the cap and insert replacement fuse.
WARNING!
• Replace only with a 0.25 amp 2AG fuse. Failure to do so will void safety
approval and warranties and may create an explosion hazard.
• With fuse mounted in the cap, re-install in the fuse holder with a flat blade
screwdriver and rotate 1/4 turn clockwise (to the right) to lock in position.
• Screw the 1/2” NPT close-up plug into housing with a minimum of five full
threads of engagement.
ATTENTION!
• CSA & UL standards require five full threads of engagement for the close-up
plug.
NOTES
• A field replaceable fuse is available on EA401 models manufactured after
Jan. 1, 1997.
• If, on reconnecting power, the fuse fails, check the telephone system wiring.
The fuse protects the tip and ring line from the telephone system. It is usually
powered at 48 volts DC and should not be connected to 120 volts AC.
Figure 5 - Fuse Replacement
A
B
C
1012 4339 A
Industry Canada
Industrie Canada
WARNING
FIELD REPAIR NOT POSSIBLE. FOR SERVICE RETURN TO FACTORY. TO PREVENT
IGNITION OF HAZARDOUS ATMOSPHERE, DISCONNECT FROM THE SUPPLY CIRCUIT BEFORE OPENING OR REPLACING FUSE. KEEP TIGHTLY CLOSED WHEN CIRCUITS
ARE ALIVE. ALL CONDUIT RUNS MUST BE SEALED WITHIN 18 INCHES (450 mm) OF
THIS ENCLOSURE. BREAKING OF REAR BOLT SEALS VOIDS MANUFACTURER'S
WARRANTY. SUBSTITUTION OF COMPONENTS MAY IMPAIR INTRINSIC SAFETY.
ATTENTION
CET APPAREIL NE PEUT ETRE REPARE A PIED D'OEUVRE. NE PAS L'OUVRIR.
LES BOULONS DOIVENT ETRE BIEN SERRES DEBRANCHE LE TELEPHONE
AVANT LE REMPLACEMENT DU FUSIBLE. RETOURNER L'APPAREIL A L'USINE POUR LE DEPANNAGE. LE FAIT DE BRISER LE SCEAU DU FABRICANT A
L'ARRIERE DE L'APPAREIL ANNUELE LA GUARANTIE DU FABRICANT.