Thermo Scientific Precision Premium PR305040G, Руководство по эксплуатации

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8. Remove the two fan power wires from push-on terminals located on
fan housing.
9. Remove the three mounting screws holding the fan in place.
10. Install replacement fan and reassemble oven by generally reversing the
steps above.
To replace a defective circulating fan motor, proceed as follows:
Warning Sheet metal in this area is sharp. Work carefully.
s
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 the two screws that secure the heater cover. Remove the cover
by lifting and sliding it forward. It may be necessary to use a flat-blade
screwdriver to assist in lifting the cover upward. Set heater cover aside.
9. Using an Allen wrench, loosen set-screw holding the fan blade onto the
motor shaft. Observe the shaft has a flat side to prevent the set-screw
from turning on the shaft.
10. Locate the two electrical leads from the fan motor. Remove the leads
from the push-on terminal strip located in the front of the oven bezel.
11. Lay the oven on its back with the oven bottom facing forward.
6-6 Precision Premium Oven Thermo Scientific
Section 6
Service
Replacing the Cooling
Fan (continued)
Replacing the
Circulating Fan Motor