Wolf WWD30-2 Manual
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Wolf WWD30-2 Manual

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Electronic Control Info.
GENERAL INFORMATION:
Electronic control will provide temperature control in the warming drawer as determined and set by user. Up and
down arrow keys are provided to increase and decrease, respectively, the temperature of the drawer and operation
time. Temperature control range of the warming drawer main board control will be 80ºF to 200ºF (26.7ºC to 93.3ºC).
Amplitude of this temperature control will be ± 5ºF. When the control sees a temperature at the thermistor 5ºF above
set-point, control will open the element relay. Once the control sees a thermistor temperature of 5ºF below set-point,
the relay will close allowing element to cycle on.
Display
Thermistor
Beeper
F
PROOF
ON
LCD Display
#814750 - Revision A - January, 2011
Circulation Fan
Element
(Inner ceiling)
Display Board/
Keypad
Electronic Control Board
(Behind Front Panel)
Figure 3-1. Component Location Top View.
CONTROL (all low
temp components)
Communications
Figure 3-2. Electronic Control System Diagram.
POWER
ON/OFF
TIMER
Power On/Off
Figure 3-3. Keyboard Layout.
Warming Drawer WWD30-2
Power/Relay Board
Flex Cable
(Network Cable)
Door Switch
(Bottom of Drawer Front)
Keypad
Flex Cable
Door Input
HIGH
TEMP
TEMP
TEMP
TEMP
MED
Temperature
Preset Controls
Controls
3-2
AC Fan
POWER BOARD
DLB
(CB/CE Model only)
Element
(850W)
LOW
PRESETS
TIMER
PROOF
Timer Controls

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Summary of Contents for Wolf WWD30-2

  • Page 1 Electronic Control Info. Warming Drawer WWD30-2 GENERAL INFORMATION: Electronic control will provide temperature control in the warming drawer as determined and set by user. Up and down arrow keys are provided to increase and decrease, respectively, the temperature of the drawer and operation time.

  • Page 2: Description Overview

    Electronic Control Info. Warming Drawer WWD30-2 DESCRIPTION OVERVIEW: Element: The element will be powered by the element relay (normally-open contacts). This allows the element to be disabled under most conditions. Only during a call for heat from the main controller, will the element relay be energized.

  • Page 3: System Modes

    Electronic Control Info. Warming Drawer WWD30-2 SYSTEM MODES: The control can be placed into several different operational modes which changes preset conditions inside the warm- ing drawer. Details as to what each mode does to the operation of the drawer can be found below.
  • Page 4 Electronic Control Info. Warming Drawer WWD30-2 NORMAL WARMING MODE: Operations: (Continued) If temperature of unit is greater than 10ºF above set-point, control will chime and “hot” will flash in the temperature display. Control will continue to check if temperature has dropped, every 20 seconds. Once temperature, as moni- tored by the thermistor, is within 10°F of set temperature, set temperature will be displayed and resume cycling nor-...
  • Page 5 Electronic Control Info. Warming Drawer WWD30-2 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. HIGH...

  • Page 6: Timer Mode

    Electronic Control Info. Warming Drawer WWD30-2 END OF WARMING TIME: Upon reaching “0:00”, “0:00” will begin flashing. Element and fan will shut off at this time. Control will also emit three chimes every 30 seconds to denote unit has shut off. After 5 minutes the timer will power down and turn unit off.

  • Page 7: Sabbath Mode

    Electronic Control Info. Warming Drawer WWD30-2 SABBATH MODE: To accommodate observance of the Sabbath, a special mode exists where the control will only react to the “Power On/Off” key. In Sabbath Mode, the display will not change. “ON” remains on constantly. LCD back lighting will also remain on at all times during this mode at a rate of 50% normal power.

  • Page 8: User Preference Setup

    Electronic Control Info. Warming Drawer WWD30-2 USER PREFERENCE SETUP NOTE: Following changes must be made when unit is in “ON” mode. Preset Change: Changes can be made to presets by completing the following sequence. Press “Power On/Off” key, then press pre- set key you wish to change and hold for 5 seconds.
  • Page 9 Electronic Control Info. Warming Drawer WWD30-2 LED Back Lighting Change: Mode Entry: Enter backlight setting preference by pressing and holding both “TEMP” and “TIMER” up arrow keys for 5 seconds. Current backlight setting will appear in display. (See Figure 3-14)

  • Page 10: Field Service Mode

    Electronic Control Info. Warming Drawer WWD30-2 FIELD SERVICE MODE Initiating Diagnostics Mode: Note: Diagnostics mode can only be entered from “‘OFF” mode. Mode Entry: The Field Service mode can be entered by pressing and holding “Power On/Off” key, along with “MED” and “PROOF”...

  • Page 11: Temp Display

    Electronic Control Info. Warming Drawer WWD30-2 Field Service Mode Unique Keystrokes: key press TEMP DISPLAY TIMER DISPLAY Enter Diagnostics rE (Sr if in showroom mode) 0018 (Meaning revision 1.8) TIMER TIMER TIMER TIMER TIMER TIMER TIMER (Control On Time) 1:60 = 16000 hr. (See note below) TIMER ELE (Element On Time) 95:00 = 950000 hr.
  • Page 12 Electronic Control Info. Warming Drawer WWD30-2 Field Service Mode Functional Test Keystrokes: key press TEMP DISPLAY TIMER DISPLAY “ON” INDICATOR Func ON (Relay closed, TEMP Element on) Func OFF (Relay Opens, TEMP Element Off) Func ON (Relay closed, Fan TEMP...

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