TurboChef Technologies Residential Single and Double Wall Oven - Manual (Page 56)

5.8 OVEN SYSTEMS
Air Switch (Single Wall Oven)
Th e air switch monitors the amount of air coming
from the exhaust blower in the single wall oven. It is
a fail-safe device that communicates to the control
board whether or not the exhaust blower is working.
Clock
For Gen 1 ovens, pins 1 and 5 supply voltage to
the clock for operation from the clock transformer.
For Gen 2 ovens, pins 1 and 5 supply voltage to
the clock from terminals RBJ18-1 and RBJ18-2 on
the relay board. For all ovens, pins 2 and 3 supply
control signals to the control board, which allows
the clock to tell the control board when the speaker
needs to chime (terminal P24 on Gen 1 ovens and
terminal J21 on Gen 2 ovens).
Control Board
Th e control board controls each electrical compo-
nent of the oven. See section 7 for schematics.
CookWheel Control
When the CookWheel is turned to any position
except “Off ” and “Favorites,” it closes its normally
open (N.O.) switch and the upper and lower cooling
fans are activated. Also, the three upper oven heating
elements receive L2 voltage and the stirrer mo-
tor activates. In any position other than “Off ” and
“Favorites” the control board also closes the relays
that supply L1 voltage to the three heating elements
in the upper oven, preheating the oven during the
selection process.
Display, Lower Oven
Th e lower liquid crystal display is the primary user
interface for the lower oven.
Attaching the Lower Display Cable
CAUTION: When connecting the lower dis-
play to the control board, ensure that it is connected
correctly. An incorrect connection can cause the
control board and/or the lower display to fail.
A twenty pin female connector connects the lower
display cable to the control board. Th
e triangle on
the connector denotes pin 1. Ensure that the slot
Control System
Th is section contains information about the
following components:
- Air switch (single wall oven)
- Clock
- Control
board
- CookWheel control
- Display, lower oven
- Display, speedcook oven
- Electrical compartment cooling fans
- EMI fi lter
-
Fuses
- High limit thermostats
- Latch mechanism (lower oven)
- Light switch, control panel
- M.O.V.
fi lter
- Magnetron cooling fan
- Magnetron
thermostats
- Power supply, 12 VDC
- Power supply, 24 VDC
- Relay board (Gen 2; see diagram on page 7.7)
- Relay - K2 monitor (Gen 1 oven)
- Relay - K3 T1 HV transformer (Gen 1 oven)
- Relay - K4 T2 HV transformer (Gen 1 oven)
- Relay - K5 mag cooling fan (Gen 1 oven)
- Relay - K6 right-side door lock (Gen 1 oven)
- Relay - K7 left-side door lock (Gen 1 oven)
- Relay - K8 preheat (Gen 1 oven)
- Relay - K9 L2 upper heating elements
- Relay - K10 lower door lock (Gen 1 oven)
- Relay - K13 L2 lower oven heating elements
- RJ Cables
-
RTD
- SD Card
- Selector switches
- Solid state relay - K1 L1 Speedcook oven
heating elements
- Solid state relay - K11 lower oven bake and
convection
elements
- Solid state relay - K12 lower oven broil
elements - inner and outer
-
Speaker
- Temperature switch (Lower Oven)
- Transformer, clock, 12 VAC
- Th
ermostat, cook cavity
- Th ermostat, fan control
- USB port
- Wiring
harness
For information on accessing and removing parts,
see the Appendix.