Publicité
Les langues disponibles
Les langues disponibles
To remove the Explosive Atmosphere Wall Telephone set from service after disconnecting the line wires
at the protector, remove the three mounting screws securing the cover and loosen the No. 8-32 Allen
Setscrew until the locking pin pops out. The apparatus unit may now be screwed off the base. Care
should be taken to avoid contamination of the threads with dirt or grit.
HANDSET WITH CORD REPLACEMENT (INSTRUCTIONS FOR TRAINED TECHNICIAN)
To replace the Handset with Cord, remove the Explosive Atmosphere Wall Telephone set from service by
disconnecting the line wires at the protector. Remove the three mounting screws securing the cover and
loosen the No. 8-32 Allen Setscrew until the locking pin pops out. The apparatus unit may now be
screwed off the base. Care should be taken to avoid contamination of the threads with dirt or grit. Move
the apparatus unit to an area where the danger from explosive atmospheres does not exist. Loosen the
front cord strain relief screw. Carefully turn the apparatus unit to allow access to the interior of the
telephone. Loosen the dial assembly (either Rotary or Touch-Tone) to allow access to the handset cord
bushing. Remove the cord clamp located near the handset cord bushing. Loosen the terminal screws
securing each handset wire to the network, taking care to note the terminal location or each wire color,
and remove the wire leads from the network. Carefully loosen the knurled bushing nut by inserting a large
screwdriver in the slot and then tapping the screwdriver handle with a hammer so as to drive the nut in a
counter-clockwise direction. Gently tap the center of the bushing using a rubber mallet and a piece of
wood to remove the bushing and the handset cord assembly from the telephone housing. Carefully pull
the wires through the housing and remove the handset cord and bushing assembly.
WARNING: Extreme care must be taken while replacing the Handset with Cord to ensure
that no component of the set is damaged. Damage of any type to any component of the
set while replacing either a Handset with Cord, Switchhook Assembly, or dial will require
the Explosive Atmosphere Wall Telephone set to be returned to the Lucent Technologies
Service Center for repair or replacement.
Install the replacement Handset with Cord and bushing by reversing the above procedure. Allow sufficient
slack so the terminal wires do not touch other components, including the base. To replace the apparatus
unit, remove all dirt and grit from the threads of both the base and apparatus unit, apply anti-seize
compound (RM-642708) to the threads, and screw the unit to the base with a minimum of eight turns until
the leaf springs of the base make contact with the apparatus unit. Align the apparatus unit with the base
to permit depression of the locking pin into the hole in the base. Depress the locking pin and tighten the
No. 8-32 Allen Setscrew. The cover may now be secured to the apparatus unit by means of the three
mounting screws.
After ensuring that all defects due to any cause, even though seemingly slight, have been corrected,
reconnect the line wires at the protector.
SWITCHHOOK ASSEMBLY REPLACEMENT (INSTRUCTIONS FOR TRAINED TECHNICIAN)
To replace the Switchhook Assembly, remove the Explosive Atmosphere Wall Telephone set from service
by disconnected the line wires at the protector. Remove the four flat-head screws securing the
Switchhook Assembly to the Explosive Atmosphere Wall telephone set using an appropriate size
screwdriver. Carefully remove the existing Switchhook Assembly.
WARNING: Extreme care must be taken while replacing the Switchhook Assembly to
ensure that no component of the set is damaged. Damage of any type to any component
of the set while replacing either a Switchhook Assembly, Handset with Cord, or dial, will
require the Explosive Atmosphere Wall Telephone set to be returned to the Lucent
Technologies Service Center for repair or replacement.
8
Publicité
Chapitres
