Barnstead FB1310M Operation And Repair Manual And Parts List page 24

M S
AINTENANCE AND
Note
Identify or mark wires discon-
nected to ensure proper place-
ment and connection when rein-
stalling.
24
ERVICING
6. Disconnect thermocouple leads from terminal
block.
7. Remove four nuts holding control section to
furnace chamber.
8. Remove the ground nut.
9. Remove the control section from the furnace
chamber. Remove plates, screws, spacers
and nuts. Be sure to note how plates are
assembled together for reassembly.
10. Remove back piece of insulation by opening
door and pushing it out gently.
11. Remove bottom piece of insulation by lifting it
out.
12. Remove element and hearth plate by pulling
it straight back out of the furnace chamber.
(Be careful not to damage elements.)
13. Remove side insulating pieces.
14. To remove top insulating piece and hearth
collar, position the furnace on its side.
Remove both objects from furnace.
15. Reposition furnace on its top. Reinsert new
hearth collar and the new top piece of insu-
lation. Insert the new side pieces of insula-
tion last.
16. Reinsert element and hearth plate unit into
the chamber, pushing it firmly against the
hearth collar. (Be careful not to damage
insulation.)
17. Reinsert new bottom piece of insulation over
hearth plate. (Element leads and ceramic
bushings should be exposed above insula-
tion bottom piece.)