Barnstead FB1300, Operation And Repair Manual And Parts List

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21
To Replace Insulation
1. Remove thermocouple cover.
2. Set furnace on its top and remove
screw and clamp securing thermocou-
ple, then grasp thermocouple and
remove by pulling it straight back.
Retain porcelain feed-through insulator.
3. Remove back plate.
4. Remove bottom plate.
5. Disconnect the element leads and white
insulated wires from terminal block in
control section.
6. Disconnect thermocouple leads from
terminal block.
7. Remove four screws holding control
section to furnace chamber.
8. Remove screws from door switch
bracket.
9. Remove the control section from the
furnace chamber. Remove plates. Be
sure to note how plates are secured
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.
M
AINTENANCE AND
S
ERVICING
Warning
Disconnect furnace from power
supply before servicing.
Note
Identify or mark wires discon-
nected to ensure proper place-
ment and connection when rein-
stalling.