Barnstead FB1310M Operation And Repair Manual And Parts List page 21

Note
Nicking or damaging the ele-
ment leads will cause prema-
ture element failure.
Make the bend 90°, avoiding excessive bend-
ing. (The element wires will be exposed at the
corner thus formed. This will not affect its life
or performance.)
13. Bend the other side of the element.
14. Place the hearth plate across the open end of
the ''U" shaped element.
15. Slide the element and hearth plate unit into
the chamber, pushing it firmly against the
hearth collar. Use care not to damage the soft
insulation. Remove any crumbs of insulation
that may get between the unit and the hearth
collar.
16. Thread the element leads through the ceram-
ic bushings. Bend the leads so they lie close
to the refractory plate and the bottom insula-
tion block. (The easiest and safest way to do
this is to press the wire flat with a stick or
blunt pusher. Do not use a sharp object or
nick the wire.)
17. Replace the sleeving and bend the lead 3/4
turn around the terminal screw. Cut off the
excess wire. Replace power wires on top of
element lead wires and tighten screw. Do not
cross the wire over itself around the terminal;
this makes it difficult to keep the connection
tight and prevents good electrical contact. If
you have excess wire, cut it off. Make sure
element lead wires are not touching any other
wires.
18. Replace the back insulation block and back
plate.
19. Examine the thermocouple, and, if it is good,
reinsert it into the chamber. It should extend
M S
AINTENANCE AND ERVICING
21