Thermo Scientific Precision Premium PR305040G, Руководство по эксплуатации

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To replace a defective control thermocouple, proceed as follows:
1. Disconnect power cord from the electrical outlet.
2. Open the chamber door. Carefully remove and retain hardware from
door hinges (case side). Set door aside.
3. Slide the oven forward until the front of the bezel (control panel) is at
least three inches from the edge of the bench top (or the oven feet are
at the edge of the bench).
4. Prop up the oven front by placing a shim under each front foot. Use
shims between 1½ and 2 inches in thickness.
5. Remove the screws securing bezel from bottom of oven.
6. Slide the oven back on the table plus a few inches (to set the bezel on
the bench) and rotate the bottom of the bezel out from the oven. The
top clips will come loose but the wiring will still be connected.
7. Carefully set the bezel on the bench.
8. Remove thermocouple wires from the controller 6 terminal connector
by loosening the two screws.
9. On roof of oven, locate the clip, which holds thermocouple in place.
Remove thermocouple from clip.
10. Pull thermocouple forward into oven chamber, exposing roughly a 6-
inch section of the thermocouple wire.
11. Cut the thermocouple wire to remove the thermocouple sheath.
12. Securely loop together the cut end of the defective thermocouple with
the two leads of the replacement thermocouple. Wrap tape over the
length of the loops to secure them.
13. Gently pull the defective thermocouple out through the electronics
compartment while guiding (“fishing”) the replacement thermocouple
into place.
14. Consult schematic at end of this manual. Then, generally reverse steps
1 through 10 to complete installation of new thermocouple and
reassemble oven.
Caution Verify the yellow thermocouple conductor is under the (+) tab and
the red thermocouple conductor is under the (-) tab.
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6-10 Precision Premium Oven Thermo Scientific
Section 6
Service
Replacing the Control
Thermocouple