Warming Drawer WWD30-2
Electronic Control Info.
3-6
#814750 - Revision A - January, 2011
PRESET MODES:
(Proof Mode)
Proof mode allows the customer to use the warming drawer for bread dough proofing. (
See Figure 3-8
)
Mode Entry:
Press the “Power On/Off” key followed by the “PROOF” key.
Operations:
Upon pressing the “PROOF” key. Control will display “85F” in the temperature display. In the timer area of display,
‘“4:00” along with “TIMER” will be flashing. Temperature can be adjusted by pressing the “TEMP” up or down arrow
keys. By touching the TIMER up or down keys, additional time can be added or subtracted from this mode. Anytime
a change is being made, the control begins flashing the changing value.
The mode activation time for the control will be 2 seconds at which time the ‘ON’ indicator will illuminate and
changes will be applied and additional indicators will stop flashing.
NOTE
:
Circulation fan runs while heating element is on during Proof Mode.
NOTE:
If the unit is greater than 10ºF above the set-point, control will chime and “hot” will flash in the temperature
display until the unit temperature is within 10° of set temperature. The control will continue to check if temperature
has dropped every 20 seconds.
Mode Exit:
Pressing “Power On/Off” key will cancel this mode and any related timer feature. If timer expires during “PROOF”,
and after signaling end of time chime for 5 minutes, unit will time out and power off.
TEMPERATURE MAINTENANCE:
During temperature maintenance, element and fan maintains drawer temperature to set-point temperature. Fan is on
while element is on during warming mode, (as long as drawer switch returns a drawer closed value). If element has
cycled off, fan will continue to circulate air inside drawer for a pre-determined time before turning off. Fan will then
re-energize when element is turned back on during a call for heat.
PREHEAT
:
Preheat can be described as the control operation occurring when trying to raise the temperature from more of an
ambient temperature to the operating temperature desired by the user.
Mode Entry:
The unit can be placed into a preheat mode by simply pressing the “Power On/Off” key and any other keys, when
the drawer is cool (room temperature or less than set-point).
Operations:
If the “TEMP” up or down arrow key is pressed, unit will initiate at “120F” and can be adjusted in increments of 1°.
NOTE
:
If you press and hold either arrow, the display will increase by 1° each 1/2 second until the first 5° increment
is obtained then will increase by 5° per 1/2 second.
During preheat, control temperature read out will toggle between the set-point and actual drawer temperature. At
temperatures lower than 85F, “LO” will be displayed. Temperatures equal to or greater than 85F, the actual tempera-
ture measured by the thermistor and set-point temperature, will be toggled back and forth at a rate of 5 seconds.
Once temperature has reached desired set-point temperature, control will emit a chime.
Mode Exit:
A press of the “Power On/Off” key will terminate Preheat mode and shut unit off.
TIMER
PROOF
LOW
PRESETS
HIGH
MED
TEMP
POWER
ON/OFF
PROOF
F
TEMP
TEMP
TEMP
ON TIMER
Figure 3-8. Example of “PROOF” preset.
