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CSO30
Service Manual
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Wolf CSO24, CSO30 Service Manual

subzero.com 800.222.7820
Convection Steam Oven
Service Manual
General Information 2 Installation Information 5 Controls & Operation 10 Component Access & Removal 22 Troubleshooting Guide 33 Technical Data 43 Wiring Diagrams 44
CSO24 and CSO30 (SWS #13508346)
General Information
1-2
This manual is designed to be used by Authorized Service Personnel only. Wolf Appliance, Inc. assumes no responsibility for any repairs made to Wolf appliances by anyone other than Authorized Service Technicians.
IMPORTANT SAFETY INFORMATION
Below are the Product Safety Labels used throughout this manual. The "Signal Words" used are WARNING and CAUTION.
Please note that these safety labels are placed in areas where awareness of personal safety and product safety should be taken and lists the precautions to be taken when the signal word is observed.
INTRODUCTION
This Manual is a compilation of information from Wolf Inc. and V-ZUG Ltd., meant to provide the most recent techni­cal service information about model CSO24 and CSO30 starting with serial (SWS) #13508346. This information will enable the service technician to perform necessary repairs and return the appliance to proper operational condition.
The service technician should read the complete instructions contained in this Technical Service Manual before initi­ating any repairs on the Wolf Appliance.
INDICATES THAT HAZARDOUS OR UNSAFE PRAC­TICES COULD RESULT IN SEVERE PERSONAL INJURY OR DEATH
Indicates that hazardous or unsafe practices could result in minor personal injury or product and/or property damage
In addition, please pay attention to the signal word “NOTE”, which highlights especially important informa- tion within each section.
The information and images in this manual are the copyright property of Wolf Appliance, Inc., an affiliate of Sub-Zero
Group, Inc. Neither this manual nor any information or images contained herein may be copied or used in whole or
in part without the express written permission of Wolf Appliance, Inc., an affiliate of Sub-Zero Group, Inc. © Wolf
Appliance, Inc. all rights reserved.
TECHNICAL ASSISTANCE
If you should have any questions regarding the appli­ance and/or this manual, please contact:
Wolf Appliance, Inc.
ATTN: Service Department
P.O. Box 44988
Madison, WI 53744 - 4988
Customer Assistance
Phone #: (800) 332 - 9513
Facsimile #: (608) 441 - 5887
Technical Assistance
(For Technicians in Customer’s Homes Only)
Phone #: (800) 919 - 8324
Warranty Claims
Phone #: (800) 404 - 7820
Facsimile #: (608) 441 - 5886
Service Department e-mail Address:
customerservice@wolfappliance.com
Main Office Hours:
8:00 AM to 5:00 PM Central Time
Monday through Friday (24/7 Phone Coverage)
General Information
CSO24 and CSO30 (SWS #13508346)
1-5
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Product rating plate
WARRANTY INFORMATION
This page contains a summary of the 2 & 5 Year Warranty that is supplied with every Wolf product, followed by a Non Residential Warranty Summary and then notes about the warranties.
TWO & FIVE YEAR Warranty Summary
• Two year TOTAL PRODUCT warranty, parts and labor.
• Limited Parts Only Warranty for the 3rd through 5th year.
NOTE: This warranty only applies to products installed for normal residential use in the United States or Canada.
NON RESIDENTIAL Warranty Summary (Special Application)
• Two year TOTAL PRODUCT warranty, parts and labor.
NOTE: This warranty only applies to products installed in demonstration kitchens, test kitchens, culinary and school kitchens, and other installations which help promote Wolf Appliance brand and products. Restaurant installations and other similar commercial applications carry no warranty .
60 DAY STAINLESS STEEL COSMETIC WARRANTY
• Stainless steel (doors, panels, handles, product frames and interior surfaces) are covered by a limited 60-day parts and labor warranty for cosmetic defects on any unit under normal warranty.
WARRANTY NOTES:
• All warranties begin at the time of the unit’s initial installation.
• All Warranty and Service information collected by Wolf Appliance, Inc. is arranged and stored under the unit seri-
al number and/or the customer’s name. It is requested that you have the model and serial number available whenever contacting the factory or parts distributor.
• See Figures 1-1 & 1-2 for Rating Plate layout and location.
Figure 1-2. Rating Plate Label Location
Figure 1-1. Rating Plate Label
CSO24TE/S
CSO24 and CSO30 (SWS #13508346)
General Information
1-6
CONVECTION STEAM OVEN FEATURES
• Stainless steel with tubular handle.
• Can be installed in a standard or flush inset application.
• Stainless steel trim to match M series and E series ovens.
• Convection with twelve cooking modes: steam, reheat, auto steam bake, convection, convection humid, convec­tion steam, gourmet, slow roast, recipes, my recipes, keep warm, descale and cleanse.
• Four-level rack guides with two adjustable oven racks.
• Large viewing window and halogen interior lighting.
• Temperature probe.
• Recipes mode.
• Delayed start feature and descaling program.
• Agency certified for US and Canada.
• Two and five year residential warranty—exclusions apply, see warranty information.
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Control panel and display
Halogen lighting
Product rating plate
Adjustable oven racks
Large viewing window
Control knob
Convection fan
Four-level rack guides
Probe receptacle
Figure 1-3. Appliance Features
General Information
CSO24 and CSO30 (SWS #13508346)
1-7
DISPLAY AND CONTROL PANEL
The display and control panel is streamlined and easy to use. The control knob and buttons are used to set the cooking modes and access all of the features of your convection steam oven for exceptional results.
Display Area
The convection steam oven has three display windows providing different information. The left digital display shows cooking temperature and probe setpoint. The center text display is the informational readout used for setting differ­ent modes and cooking functions. The right digital display is the clock, timer and delayed time display.
In the lower part of the display area, symbols representing temperature, probe, cooking functions and time settings will illuminate when in use.
Control Buttons
The control (“OK”) knob and buttons, including WATER, LIGHT, TEMP, MODE, TIMER, TIME and OFF allow for opening the water tank, lighting the interior and selecting operating modes, temperatures and timing functions.
Control Knob
The control (“OK”) knob is used on its own or with the control buttons to make selections. It is used to confirm any selection. A selection is always ended by pressing the control knob to confirm.
The knob’s press and turn action controls every option. Used on its own, the control knob provides direct access to user settings and cooking modes.
Example using the control knob:
1. Press the control knob. Turn 5 clicks to user settings and press to select.
2. Turn to the setting you wish to personalize and press to select. 3 Turn to your preference and press to select. Back will return you to the previous menu.
Example using the control knob with the control buttons:
1. Press the MODE button three times to select auto steam bake. The auto steam bake symbol illuminates. A rec-
ommendation for temperature flashes in the digital display.
2. Turn the control knob to select the temperature for this mode and press to confirm. Settings will be automatically
accepted after ten seconds. Additional settings or changes can be made at any time.
Figure 1-4. Control Panel Layout
MODETEMPLIGHT OFFTIMETIMERWATER
OK
Convection steam oven control panel.
Temperature and
food probe symbols
Text display
Timer, operating time, switch-off
time and clock symbols
Left digital display Right digital display
Control buttons
Control knob
Steam, reheat, auto steam bake, convection,
convection humid and convection steam symbols
CSO24 and CSO30 (SWS #13508346)
Installation Information
2-2
INSTALLATION INFORMATION
This section of the manual covers some of the installation issues that a service technician may need to know when servicing a Wolf convection steam oven. If additional installation information is needed after reviewing this section of the manual please refer to the installation guide or contact the Wolf Appliance Customer Service Department. Numbers in parenthesis are in millimeters.
Overall Dimensions of CSO24 and CSO30
211/2 " (546)
BEHIND FRAME
177/8"
(454)
213/16"
(538)
231/2" (597)
297/8" (759)
CSO30
211/2"
(546)
143/16"
(360)
7/8" (22)
SIDE VIEW OVEN DOOR OPEN
(TOP VIEW)
FRONT VIEW
H
CSO24
(Handle)
Width of Door and Handle (H)
Transitional/Contemporary: H =
21/2 " (64)
Professional: H =
31/4 " (83)
Installation Applications
The convection steam oven can be installed in a standard or flush inset application. The installation opening must have a flat, level base to support the oven. A minimum base support of 100 lbs (45 kg) is required. The electrical supply for the oven must be located in an adjacent cabinet with 3 feet (900 mm) of opening.
Standard Installation
For standard installations, the convection steam oven is installed by inserting into cabinetry from the front. The oven has face trim on the top and both sides that will overlap stiles and rails. Refer to the chart below for trim overlaps.
Flush Inset Installation
For flush inset installations, a minimum 1/8” (3) reveal is required on all sides. To ensure consistent reveals, each corner of the opening must be exactly 90 degrees.
Notes:
Numbers in parenthesis are in millimeters.• Dimensions may vary by +/- 1/8” (3)•
Oven Trim Overlap
To p O v e r l a p
Bottom Overlap 0" (0)
Side Overlap
3
/16" (5)
0" (0)
11
/ 6" (18)1
36” Model24” Model
3
/16" (5)
7
/8"
3
(98 )
Installation Information
CSO24 and CSO30 (SWS #13508346)
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Electrical Requirements
NOTES:
• Electrical supply for the convection steam oven must be placed in an adjacent cabinet within 3' (914 mm) of the
opening. Choose the electrical location shown in the illustrations on the following pages that best suits the instal­lation.
• Follow all National Electrical Code regulations. In addition as well as all local codes and ordinances when
installing electrical service.
• Performance may be compromised if the electrical supply is less than 240 volts. A ground fault circuit interrupter
(GFCI) is not recommended and may cause interruption of operation.
To minimize shock hazard, the power cord must be plugged into a grounding-type receptacle, grounded to conform with the National Electrical Code, ANSI/NFPA 70 latest edition, or Canadian Electrical Code (CSA) and all local codes and ordinances. Refer to the illustrations below.
ELECTRICAL SHOCK HAZARD: PLUG INTO A GROUNDED 3-PRONG OUTLET. DO NOT REMOVE THE GROUND PRONG. NO NOT USE AN ADAPTER. FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT IN ELECTRICAL SHOCK, FIRE OR DEATH!
GROUNDED
NEMA RECEPTACLE
NEMA PLUG
NEMA 6-20R Receptacle
3"
(76)
NEMA
PLUG
MINIMUM CORD
CLEARANCE
Power Cord Clearance
Electrical Requirements
Electrical Supply 240/ 208 VAC, 60 Hz
Service 20 amp dedicated circuit
Receptacle NEMA 6-20R grounding-type
Power Cord 6' (1829)
CSO24 and CSO30 (SWS #13508346)
Installation Information
2-4
ROUGH-IN INSTALLATION SPECIFICATIONS
Standard Installation
FRONT VIEWSIDE VIEW
EE
221/8" (562)
OPENING WIDTH
1711/16"
(449)
OPENING
HEIGHT
219/16"
(548) min
OPENING DEPTH
CSO24 and CSO30
Notes:
Opening Width for CSO24 and CSO30 are the same.• Minimum base support 100 lbs (45 kg).• Electrical Supply must be located in adjacent cabinet with 3’ (914) of opening• Dashed line represents profile of unit.• Numbers in parenthesis are in millimeters.• Dimensions may vary by +/- 1/8” (3)•
Installation Information
CSO24 and CSO30 (SWS #13508346)
2-5
Flush Inset Installation
181/8"
(460) min
FLUSH INSET
HEIGHT
SIDE CLEATS
23" (584) min
FLUSH INSET
DEPTH
1" (25)
FRONT VIEWSIDE VIEW
TOP VIEW
5
/16"(8)
1
/8" (3)
BOTTOM CLEAT
EE
W
TOP CLEAT
FLUSH INSET WIDTH
A
FLUSH INSET WIDTH
CONVECTION STEAM OVEN
24” Model 23-3/4” (603) 13/16” (21)
30” Model 30-1/8“ (765) 4” (102)
WA
Notes:
Cleats may be visible and should be finished to match cabinetry.• Minimum base support 100 lbs (45 kg)• Electrical supply must be located in adjacent cabinet within 3’ (914) of opening.• Dashed line represents profile of unit.• Numbers in parenthesis are in millimeters.• Dimensions may vary by +/- 1/8” (3)•
CSO24 and CSO30 (SWS #13508346)
Installation Information
2-6
INSTALLING THE OVEN
NOTE: Before moving the oven, protect any finished flooring and cabinetry to avoid damage.
1. Move the convection steam oven into position near the installation opening. Remove and discard packing mate-
rials.
2. Carefully place the oven in the opening. Resting the oven on the cabinet base support, slide the unit into the
opening until it is approximately 6" (152) from being fully installed. Guide the power cord through the opening of the adjacent cabinet or base support as the oven is slid into position. Verify the power cord is not trapped between the oven and cabinet wall.
3. Once the oven is fully positioned in the opening, open the oven door and locate the four mounting holes on the
oven side trim. Refer to the illustration below. Use a 1/16" (~1.6) drill bit to drill pilot holes into the cabinet.
4. Using the mounting screws provided, secure the oven to the cabinet.
NOTE: To avoid interference, a 90 degree door stop may be required on any appliance or cabinet door installed next to the convection steam oven.
FAILURE TO INSTALL THE MOUNTING SCREWS CAN ALLOW THE OVEN TO TIP FORWARD DURING USE!
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Oven Installation
CSO24 and CSO30 (SWS #13508346)
Theory of Operation
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THEORY OF OPERATION
The Wolf convection steam oven has been developed for the highest levels of quality and ease of use. For best results the user should take a moment to become familiar with the oven’s composition, components, accessories and operation. (See Convection Steam Oven Features, and Display and Control Panel layout in Section 1)
Personalization
The oven can be personalized to suit the user’s needs and preferences. Turn the control knob to user settings to make selections.
Language
English, French, Spanish, German, Italian, and Chinese. Turn the control knob until the desired language is dis­played. Press to confirm selection.
Childproof Lock
To activate or deactivate childproof lock mode, turn the oven off, then press the control knob. Turn the knob to user settings and press to select. Turn to childproof lock and press to select. Press to select on or off.
To use the oven by temporarily disabling the lock, press and hold the OFF button while pressing MODE and the con­trol knob. The lock will automatically reactive ten minutes after the oven has been off.
Time Display
Visible or invisible. Invisible mode minimizes power consumption while the oven is off. The time display will disap­pear in approximately one minute.
Acoustic Signal
High, low or off.
Illumination
Button only or automatically with door. The cooking space can be illuminated by pressing the LIGHT button at any­time, and will turn off automatically after thirty (30) seconds.
Water Hardness
Hard, medium or soft. The oven default is for hard water. If unsure of water hardness, use the test strip provided in the use & care guide. Additional test strips may be purchased from a local home improvement center.
Follow the instructions on the test strip to determine your water hardness then select the appropriate hardness set­ting.
Temperature Units
Fahrenheit (°F) or Celsius (°C).
Contrast
Select from low to high contrasts for the control panel display. There are six settings, or boxes, which light up for increasing contrast.
Format
12-hour (am/pm) or 24-hour clock. In 24-hour mode the display is dimmed between 24:00 and 6:00.
Factory Settings
Reset. Returns all user settings to the factory preset.
Water Door Control
Button only or automatically with message. If automatically with message is selected, the water door panel will open automatically if the water tank empties during operation. The flap may also be opened at any time by pressing the WATER button. NEVER attempt to open the water door manually.
Theory of Operation
CSO24 and CSO30 (SWS #13508346)
3-3
Selecting and Changing Operating Modes
Selecting Operating Mode
1. Press the MODE button until the desired mode appears.
2. Press the control knob to confirm the mode.
Example: a. Press the MODE button until you reach auto steam bake mode. “Auto Steam Bake—Rack 2 or 1+3” appears
in the text display. The recommended temperature flashes in the upper left digital display. The auto steam bake and temperature symbols flash.
b. Press the control knob to confirm. “Auto Steam Bake—Steam phase” followed by “Auto Steam Bake—Hot air
phase” appears in the text display.
Changing Operating Mode
1. Press the OFF button. The selected operating mode is ended.
2. Press the MODE button to select a new operating mode.
Selecting Temperature
After a cooking mode is selected, the temperature can be set.
Selecting Cooking Temperature
1. Press the TEMP button.
2. Turn the control knob to set the desired cooking temperature and press to select.
3. Once the mode has started, you can press the TEMP button and turn the control knob to change the tempera-
ture. Press the control knob to select the temperature.
Switching Oven Off
1. Press the OFF button. The temperature and mode symbols go out. Steam is gradually released from the cook-
ing space over 1 minute to avoid a rush of steam when the oven door is opened. The cooling fan can continue to run. “Residual heat” appears in the text display.
2. After each use, leave the oven door open in the “at-rest” position (see Figure 3-1), until the interior has cooled
down. When cool, wipe the cooking space dry before closing the door. After turning off any mode utilizing steam, the display will read “Water is being pumped off”. Be sure not to remove the water tank during this time.
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Figure 3-1. Oven Door “At Rest” Position
CSO24 and CSO30 (SWS #13508346)
Theory of Operation
3-4
Timer and Timer Functions
The Wolf convection steam oven includes timer functions that manage cooking start and stop times so you can be away from the kitchen and still enjoy hot-from-the-oven meals at pre-specified times. Please take a moment to set your local time, and learn more about these useful time saving features.
The timer can be used at any time, independently of other functions.
Setting Current Time
1. Press the TIME button.
2. Turn the control knob to set the hour and press to select.
3. Repeat for minutes.
Setting the Timer
1. Press the TIMER button.
2. Turn the control knob to set duration. The timer can be set for up to 9 hours, 59 minutes. For the first 10 min­utes, the intervals are 10 seconds. Example: 5' 40. After 10 minutes, one minute intervals can be selected.
3. Press the control knob to start. ‘Timer’ appears in the text display window and the countdown of time is visible in the right digital display. The timer symbol illuminates. When timed duration is up, a sequence of audible sig­nals repeats for one minute. ‘Timer finished’ appears in the text display and the timer symbol flashes.
Turning Off Timer Notification
1. Press the TIMER button.
Checking / Resetting Timer
1. Press the TIMER button to view countdown.
2. Turn the control knob to change duration and press to select.
Turning Timer Off
1. Press the TIMER button twice. The right digital display will flash 0'00.
2. Press the control knob to confirm.
Operating Time
The operating time feature automatically turns the oven off at the desired time. These instructions assume you have placed food in the cooking space and selected a mode and temperature.
Setting Operating Time
Preheat the cooking space if necessary before setting time.
1. Press the TIME button.
2. Turn the control knob to set the duration. Operating mode automatically turns off when the operating time has been reached.
Checking / Changing Operating Time
1. Press the TIME button. Time remaining flashes in the right digital display. The operating time symbol flashes.
2. Turn the control knob to change duration and press to select.
Turning Off Before Time
1. Press the OFF button.
End of Time Signals
The selected mode turns off automatically when the operating time is up. Notification includes a long, intermittent audible signal emitted for 1 minute.‘Operating time finished—Continue: select duration’ appears in the text display. Cooking space temperature appears in the left digital display and the operating time symbol flashes in the right digital display. Settings remain for 3 minutes.
Extended Time
1. Turn the control knob to select a new duration within 3 minutes of the time ended notification.
Turning Off
1. Press the OFF button. Settings are cleared. Residual heat temperature continues to be displayed.
Theory of Operation
CSO24 and CSO30 (SWS #13508346)
3-5
Delayed Start
The delayed start feature automatically turns the convection steam oven both on and off at desired times. The instructions below assume food has been placed in the cooking space and a mode and temperature has been selected.
Setting Delayed Start Time
1. Press the TIME button.
2. Turn the control knob to select the operating time.
3. Press the TIME button again
4. Turn the control knob to select the switch-off time and press to confirm.
Example: At 8:00 am, select convection mode and 355°F (179°C). Press the time button and select an operating time of 1 hour. Press the time button again and set the switch-off time to 9:30. Press the control button to con­firm. The oven will remain off with the switch-off time symbol illuminated. The oven will turn on at 8:30 auto­matically.
Checking / Changing Switch-Off Time
1. Press the TIME button. The operating time is visible for 3 seconds.
2. Press the TIME button again. The switch-off time flashes.
3. Turn the control knob to adjust the switch-off time and press to confirm. When the switch-off time flashes, turn
the control knob to change. The switch-off time can be delayed by a maximum 11 hours 59 minutes in 12-hour mode and 23 hours, 59 minutes in 24-hour mode.
Turning Off Before Time
1. Press the OFF button.
End of Time Signal
The operating mode turns off automatically when the operating time is up.
• A long, intermittent audible signal is emitted for 1 minute. “Operating time finished—Continue: select duration”
appears in the text display.
• The cooking space temperature appears in the left digital display.
• The time flashes in the right digital display.
• The operating time symbol flashes.
• The settings remains for 3 minutes.
Turning Off
1) Press the OFF button. Settings are cleared. Residual heat temperature continues to be displayed.
Using Delayed Start with Temperature Probe
When using delayed start with the probe, the oven will automatically turn off when the set probe temperature is reached, which may be somewhat earlier or later than the set switch-off time.
Additional Notes on Delayed Start
Delayed start is available for recipes that do not require preheating, including Gourmet, recipes or my recipes. Perishables should not be kept unrefrigerated.
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