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Summary of Contents for Subzero WD30
- Page 1 800.222.7820 WD30 Service Manual General Information Installation Information Controls & Operation Component Access & Removal Troubleshooting Guide Technical Data Wiring Diagrams...
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Page 2: General Information
General Information WARMING DRAWER INTRODUCTION This Wolf Warming Drawer Technical Service and Parts Manual, Part #802981, has been compiled with information provided by Watertown Metal Products, a division of Western Industries, Inc. This manual provides the most recent technical service information that will enable the service technician to troubleshoot and diagnose malfunctions, per- form necessary repairs and return a Wolf Warming Drawer to proper operational condition. -
Page 3: Warranty Information
(back of drawer frame front plate) Figure 1-1. Serial Tag Location Wolf Appliance Company LISTED FITCHBURG, WI 53719 MODEL NO. SERIAL NO. WD30 13000001 USE ON 2 WIRE 60HZ AC ONLY MADE IN USA Figure 1-2. Serial Tag Layout #802981 Rev. A Jan. 2005... -
Page 4: Model Features
General Information WARMING DRAWER MODEL FEATURES Wire Rack for Stacking Food Galvanized Exterior Stainless Steel Interior Removable Stainless Steel Drawer Box 450-Watt Heating Element (Not Shown) PO WE ON /OF AD JUS PR ESE HIG H ME DIU LO W PR OO Hidden Electronic Control (when drawer is closed) -
Page 5: Installation Information
Installation Information WARMING DRAWER INSTALLATION INFORMATION The Wolf warming drawer is designed to be set into a built-in wall or cabinet installation. This section of the manual covers some of the installation issues that a service technician may need to know when servicing a Wolf warming drawer. - Page 6 Installation Information WARMING DRAWER Installation Specifications (Non-Integrated) The warming drawer is designed to be set into a built-in installation alone, or in combination with a Wolf wall oven, microwave oven or cooktop. The illustration below shows the rough-in dimensions for a “non-Integrated” warming drawer installation below a wall oven (See Figure 2-2).
- Page 7 Installation Information WARMING DRAWER Installation Specifications (Integrated) - Starting with Serial #13005870 The illustration below shows the rough-in dimensions for an “Integrated” warming drawer installation below a wall oven (See Figure 2-3). NOTE: Prior to serial #13005870, the warming drawer could not be installed in an Integrated application. For complete installation instructions, refer to the installation guide.
- Page 8 Electronic Control Information WARMING DRAWER MODEL WD30 ELECTRONIC CONTROL SYSTEM Input operations for the electronic control system are performed at the control panel, which is located at the right side of the faceplate. The control board, which is located directly behind the control panel, monitors the input opera- tions performed at the control panel, supplies a signal to the power board to switch the heat element on and off and, through the use of LED’s (Light Emitting Diodes), displays unit ON/OFF condition, temperature setting, actual tem-...
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Page 9: Control Panel Layout
Electronic Control Information WARMING DRAWER CONTROL PANEL LAYOUT LED Temp The diagram at right shows the layout of the control Readout panel, behind which is the control board. The LED readout, ON/OFF indicator light and temperature range POWER ON/OFF ON/OFF Key indicator lights are part of the control board. - Page 10 Electronic Control Information WARMING DRAWER Unit ON/OFF Preset LOW As mentioned earlier, the unit enters OFF mode after Temperature power-up mode. By pressing and releasing the Power Setting Appears ON/OFF key, ON mode is initiated and power is allowed past the electronic control system to the heater circuit POWER ON/OFF Decimal...
- Page 11 Electronic Control Information WARMING DRAWER Selecting Variable Temperature Settings Selected After the unit has been switched to ON mode, the tem- Variable perature setting can be increased and/or decreased by Temperature pressing the arrow keys. Pressing the “up” arrow key Setting POWER will increase the setting.
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Page 12: Unique Electronic Control Input Operations
Electronic Control Information WARMING DRAWER UNIQUE ELECTRONIC CONTROL INPUT OPERATIONS Following are articles and illustrations which explain the unique input operations performed at the control panel. Preset Value Adjust Mode, Automatic Shut-off Adjust Mode, Sabbath Mode, Initialization Mode and Diagnostic Mode are explained. - Page 13 Electronic Control Information WARMING DRAWER Automatic Shut-off Adjust Mode The electronic control is programmed at the Last pro- grammed factory to automatically switch the unit OFF auto shut-off four hours after the last key stroke is per- POWER POWER with letters formed in the ON mode.
- Page 14 Electronic Control Information WARMING DRAWER Sabbath Mode For the observance of certain religious Last pro- grammed days, a Sabbath mode was incorporated auto shut-off into the electronic control system. When in POWER POWER time interval Sabbath mode, the automatic shut-off is ON/OFF ON/OFF with letters...
- Page 15 Electronic Control Information WARMING DRAWER Initialization Mode If adjustments to pre-set temperature val- “ini” appears in window ues or automatic shut-off time intervals are indicating ini- undesirable, the electronic control can be POWER POWER tialization set back to all factory default settings ON/OFF ON/OFF mode initiat-...
- Page 16 Electronic Control Information WARMING DRAWER Diagnostic Mode Diagnostic mode allows the service techni- All LED seg- ments of cian to verify proper function of the LED’s each digit on and related circuits. In fact, diagnostic POWER POWER temp. display mode performs the same functions as ON/OFF ON/OFF illuminate...
- Page 17 WARMING DRAWER COMPONENT ACCESS AND REMOVAL This section explains how to adjust, access and remove components in a model WD30 Warming Drawer. An attempt has been made to arrange these procedures in such a way as to simulate which components would need to be removed first in order to gain access to other components.
- Page 18 Component Access & Removal WARMING DRAWER Wire Rack Wire Rack The wire rack sits in the stainless steel drawer box. To remove the rack, open the drawer fully and lift the rack out of the box. (See Figure 4-1) Drawer Box Stainless Steel Drawer Box The side and back flanges at the top of the stainless steel drawer box rest on top of the drawer frame.
- Page 19 Component Access & Removal WARMING DRAWER Drawer Glide Assembly The drawer glide assemblies are attached to the side Outer Glide Rail walls of the warming drawer cavity by two tabs on the back side of each glide, one at the rear pointing back and one toward the front pointing down.
- Page 20 Component Access & Removal WARMING DRAWER Power Cord (Insulation not Shown) The wire leads of the power cord pass through a hole in the control panel cover. The wire grommet on the power cord holds the cord in place in the control panel cover.
- Page 21 Component Access & Removal WARMING DRAWER Top/Left Side Wrap and Bottom/Back Wrap (Insulation not Shown) The top/left side wrap and the bottom/back wrap are attached to each other and the cavity with screws. To access and remove the wraps, the appliance will first need to be extracted from its installation and the wire box cover and control panel cover will need to be removed.
- Page 22 Component Access & Removal WARMING DRAWER Thermal Switch (PTS #13005870) (Insulation not Shown) The thermal switch is attached to the back of the front plate with a clip, a threaded stud and a nut. To remove the thermal switch, the appliance will first need to be extracted from its installation and the wire box cover, control panel cover and top/left side wrap will need to be removed.
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Page 23: Troubleshooting Guide
Troubleshooting Guide WARMING DRAWER General Troubleshooting Guide PROBLEM POSSIBLE CAUSE TEST / ACTION A. Unit Does Not Function at All No Power to Unit Check power to unit. Plug unit in, switch supply circuit breaker to ON position or replace fuse if defective. - Page 24 This section of the manual contains the General Troubleshooting Guide which will help the Service Technician trou- bleshoot a Wolf WD30 unit. Following the General Troubleshooting Guide is the Electronic Control System Test Procedures to be performed after going through the General Troubleshooting Guide and determining that the elec- tronic control system is suspect.
- Page 25 Troubleshooting Guide WARMING DRAWER General Troubleshooting Guide PROBLEM POSSIBLE CAUSE TEST / ACTION A. Unit Does Not Function at All No Power to Unit Check power to unit. Plug unit in, switch supply circuit breaker to ON position or replace fuse if defective.
- Page 26 Troubleshooting Guide WARMING DRAWER PROBLEM POSSIBLE CAUSE TEST / ACTION F. Food Dries Out Improper Moisture Selection Setting Adjust moisture selection lever to close vent. Temperature Setting too High Reduce temperature setting. Food Uncovered Cover food with lid or aluminum foil. Food in Drawer too Long Food in drawer longer then 2 hours will tend to dry out.
- Page 27 Troubleshooting Guide WARMING DRAWER Electronic Control System Test Procedures The Electronic Control System Test Procedures are to be performed in the order listed and only after going through the General Troubleshooting Guide. Control Panel Operation Test Procedure NOTE: If no LED’s illuminate, proceed to Power Board Test Procedure on following page. 1.
- Page 28 Troubleshooting Guide WARMING DRAWER Power Board Electrical Test Procedure 1. Pull unit from its installation and disconnect power. (If possible, interrupt power before pulling unit from its installation.) 2. Check electrical outlet for 115 volts AC, proper grounding and proper power/neutral orientation. Instruct Customer to contact Electrician if problems are found.
- Page 29 Troubleshooting Guide WARMING DRAWER Control Panel/8-Pin Ribbon Cable Electrical Test Procedure 1. With control panel 8-pin ribbon cable attached to control board and 4-pin ribbon cable installed, apply 115 volts AC to unit, press keys and observe DC voltage at control board connections as described below: NOTE: Do this by placing the meter probes on exposed terminals of ribbon cable.
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Page 30: Technical Data
Technical Data WARMING DRAWER TEMPERATURE INFORMATION Temp. Setting Preset Temp. Temp. Setting Range Minimum Preheat Time HIGH 190°F 180°F - 200°F 20 Minutes MEDIUM 170°F 160°F - 179°F 15 Minutes 120°F - 159°F 150°F 8 Minutes (Recommended 145°F - 159°F) 70°F - 119°F PROOF 100°F... -
Page 31: Wiring Diagrams & Schematics
Wiring Diagrams & Schematics WARMING DRAWER MODEL WD30 WIRING DIAGRAM (Prior to Serial #13005870) #802981 Rev. A Jan. 2005... - Page 32 Wiring Diagrams & Schematics WARMING DRAWER MODEL WD30 WIRING SCHEMATIC (Prior to Serial #13005870) #802981 Rev. A Jan. 2005...
- Page 33 Wiring Diagrams & Schematics WARMING DRAWER MODEL WD30 WIRING DIAGRAM (Starting with Serial #13005870) BLACK BLACK BLACK WHITE WHITE BLACK #802981 Rev. A Jan. 2005...
- Page 34 Wiring Diagrams & Schematics WARMING DRAWER MODEL WD30 WIRING SCHEMATIC (Starting with Serial #13005870) #802981 Rev. A Jan. 2005...
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