TurboChef Technologies Residential Single and Double Wall Oven - Manual (Page 52)

5.4 OVEN SYSTEMS
e. Select “Top Oven.”
f. Select “Mags.” For Gen 1 ovens, the Cook-
Wheel must not be in the Off position.
2. Place a water load into the cook cavity (Figure
5.3). Water load must conform to the following
specifi cations:
- Volume: 275 ml ± 15 ml
- Temperature: 68°F ± 9°F (20°C ± 5°C)
- Vessel: Low form, 600 ml beaker with an
inside diameter of approximately 3.35” (85
mm) and made of Pyrex
®
or equivalent.
3. Close the oven door and turn on the
magnetrons.
4. Position the microwave survey meter as shown
in
Figure 5.4.
5. Measure microwave emission:
a. Leave the magnetrons on for 60 seconds.
b. While the magnetrons are on, measure
microwave emission around the door,
moving the meter sensor at 1 inch/second.
As microwave leakage is observed moving
the sensor at 1 inch/second, note any meter
spike areas that come close to 5mW/cm 2 for
later re-measurement.
c. Replace the water load every 60 seconds
until the test is completed.
6. Once done scanning the entire door, replace the
water
load.
7. Close the oven door. While the magnetrons are
on, return the meter probe to any “meter spike”
areas and allow the probe to remain in the
“spike” area for 15 seconds per area. Note the
highest reading obtained in each area.
Right Lock Motor Assembly
Th e right lock motor assembly consists of a motor,
locking mechanism for the right side of the Speed-
cook oven door, and three switches that activate
when a cam is turned while the door closes.
For Gen 1 ovens, when the secondary, monitor, and
lock switches are closed, the I/O control board opens
the K2 relay to prevent a direct short to the 20-amp
fuse.
Th e right lock switch closes to supply power to the
locking mechanism when the cam is turned while
the door is closed.
For Gen 1 ovens, the right switches (when closed in
conjunction with the primary switch) supply power
to the K3 and K4 relays, which close and distribute
power to the right and left high-voltage transform-
ers, allowing for microwave operation.
For Gen 2 ovens, the door switch circuit starts and
returns on the control board (secondary switch =
J15-9 and 10; monitor switch = J15-5 and 6).
Control voltage leaves the control board to the relay
board for relay operation.
Measuring RF Leakage for Microwave Safety
An RF (microwave) leakage test must be performed
at the conclusion of the following service tasks:
- Door removal, replacement, and/or adjustment
- Door gasket removal, replacement, and/or
adjustment
- Waveguide removal and /or replacement
- Magnetron removal and/or replacement
- Door skin removal and replacement
WARNING: If the unit fails the microwave
leakage test (leakage greater than 5mW/cm 2 ), the
oven must be taken out of service immediately until
the defect is corrected. In addition, the CDRH
Regulation 21 Subpart C, 1002.20 requires that
leakage readings of over 5mW/cm
2 must be reported
to the manufacturer.
To measure RF leakage,
1. Access the Installer Setup Mode.
a. Press the “Info” key.
b. Select
“Oven Setup.”
c. Select “Installer Setup.”
d. Input the password 042259.
Figure 5.3: Water Load Placement