Barnstead F46110CM Operation Manual page 36

M S
AINTENANCE AND ERVICING
36
the heating element until the element ceramic holder
rests on top the main insulation. Check the heating
element on the inside of the chamber. The large diameter
section of the element must be flush with or slightly
projecting from the surface of the insulation (if not,
reposition element ceramic holder). Carefully wrap the
connector cable around the element ends; fasten with
clips. Replace top cover.
To replace thermocouple:
a. Remove top cover from the heating chamber side of
furnace.
b. Loosen diagonal screw holding ceramic connection
block.
c. Lift connection block.
d. Loosen connection block screws holding thermocouple;
noting which side of block the side of the
thermocouplewith the colored bead is connected to.
e. Remove thermocouple.
f. Install new thermocouple with colored bead in same
position.
g. With thermocouple through the hole in the insulation,
replace block in its holder and retighten diagonal screw.
h. Turn furnace ON for a few minutes; check to be sure the
temperature displays upscale.
i. Replace cover.