17
Barnstead/Thermolyne 1-800-553-0039
q.
Re-lnsert elements from the front towards the back. Insert the bottom element first, then the
sides, and the top element last. (Make sure elements are flush and are approximately one inch
from door opening.)
r.
Re-insert back piece of insulation over element leads and insulated porcelain bushings.
s.
Replace back terminal plate over element leads with the six screws.
t.
Reconnect the yellow wire to the positive terminal and the red wire to the opposite terminal
(negative). Insert thermocouple and fasten the lead tagged positive (+) to the positive terminal
and the other lead to the opposite terminal (negative).
u.
Bend the element leads across the "U" shaped terminal clamp washer and secure with a washer
and nut. (SEE Figure 2.)
v.
Fasten the short white insulated wire to terminal two (T2) and the longer one to terminal one (T1).
(SEE Figure 2.)
w.
Replace the back terminal cover with four screws.
x.
Reconnect the furnace to power supply.
y.
Test operation of furnace.
6-9.
To Replace Door Switch (Micro Switch):
a.
Disconnect furnace from power supply.
b.
Turn furnace upside down and remove bottom plate with four screws. (Note connection and
placement of wires to micro switch.)
c.
Disconnect the wires from door switch. Identify or mark wires disconnected to insure proper
p/acement and connection when reinstalling.
d.
Remove two screws from micro switch and slide switch off the wire rod.
e.
Insert new door switch while sliding it over the wire rod.
f.
Reconnect wires identified or marked in Step c to new door switch.
g.
Replace bottom cover and secure with four screws.
h.
Turn furnace upright and reconnect to power supply.
i.
Test operation of door switch.
6-10. To Realign Door Switch:
a.
Disconnect furnace from power supply.
b.
Loosen set screw on cam and adjust it so that the power is removed when approximately a 15°
movement is made with the door handle. (When opening the door.)
c.
Tighten set screw on adjusting cam.
d.
Reconnect furnace to power supply.
e.
Test operation of door switch.
Содержание FC2020P
Страница 2: ...January 1990 LT326X1...
Страница 6: ...3 Barnstead Thermolyne 1 800 553 0039 Figure 1...
Страница 7: ...4 Figure 2...
Страница 21: ...18 Figure 3 Exploded View...
Страница 24: ...21 Barnstead Thermolyne 1 800 553 0039 Figure 4 Wiring Diagram...
