Wolf CW24 User manual

Brand: Wolf

Model: CW24

Type: User manual

General Information 2

Controls & Operation 4

Component Access & Removal 8

Troubleshooting Guide 13

Technical Data 16

Wiring Diagrams 17

subzero.com 800.222.7820

CW24 Cup Warming Drawer

Service Manual

Page 2

Cup Warming Drawer (CW24)

General Information

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#9001337 - Revision A - September, 2015

INTRODUCTION

This Technical Service Manual has been compiled to provide the most recent technical service information. This

information will enable the service technician to troubleshoot and diagnose malfunctions, perform necessary repairs

and return the appliance to proper operational condition.

The service technician should read the complete instructions contained in this service manual before initiating any

repairs on a Wolf Appliance.

For installation information see Cup Warming Drawers Installation Guide available at http://www.subzero-

wolf.com/trade-resources/product-specifications.

For Use and Care information see Cup Warming Drawers Use & Care Guide available at http://www.subzero-

wolf.com/trade-resources/product-specifications.

IMPORTANT SAFETY INFORMATION

Below are the Product Safety Labels used in this manu-

al. 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.

This manual is designed to be used by Certified Service Personnel only. Wolf Appliance, Inc. assumes no

responsibility for any repairs made to Wolf appliances by anyone other than Certified Service Technicians.

INDICATES THAT HAZARDOUS OR UNSAFE

PRACTICES COULD RESULT IN SEVERE PERSON-

AL 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 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. ©

TECHNICAL ASSISTANCE

If you should have any questions regarding the appli-

ance and/or this manual, please contact:

Wolf Appliance, Inc.

ATTN: Service Department

P.O. Box 44988

Madison, WI 53744 - 4988

Customer Care

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:

[email protected]

Main Office Hours:

8:00 AM to 5:00 PM Central Time

Monday through Friday

(24/7 Phone Coverage)

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General Information

Cup Warming Drawer (CW24)

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#9001337 - Revision A - September, 2015

WARRANTY INFORMATION

This page contains a summary of the Warranty supplied with every Domestic Cup Warming Drawer (CW24).

2 & 5 Year Warranty Summary:

2 Year Total Product Warranty, Parts and Labor.•

3-5 Limited Parts Only Warranty.•

Details:

Warranty applies to products installed in United States or Canada, for residential use only.•

Warranty begins at time of unit’s initial installation.•

Warranty does not cover Wolf Appliances installed in a demonstration kitchen, test kitchen, culinary school•

kitchen, or similar installations. (See Special Warranty below)

Warranty and service information collected by Wolf Appliance, Inc. is arranged and stored under unit serial num-•

ber and/or customer’s name. Wolf Appliance, Inc requests that you have model and serial number available

whenever contacting factory or parts distributor.

3-5 Year Limited Parts Only Warranty applies to the heating element and the user interface.•

Special Warranty Summary

2 Year Total Product Warranty, Part and Labor.

Details:

This Warranty applies to products installed in United States or Canada, for use in a demonstration kitchen, test•

kitchen, culinary school kitchen, and similar installations that will help promote Wolf Appliance brand and its

products.

Warranty begins at time of unit’s initial installation.•

Warranty and Service information collected by Wolf Appliance, Inc. is arranged and stored under unit serial num-•

ber and/or customer’s name. Wolf Appliance, Inc. requests that you have model and serial number available

whenever contacting factory or parts distributor.

NOTE: “ICB” appliances carry no factory warranty. The product distributor or appliance dealer may offer their own

warranty.

Figure 1-2. The rating plate is located on the fan housing.

Figure 1-1. Typical Rating Label Layout

CW24/B

20V ~

60Hz 420

943028

G15D4T

pe.:

Mad

nPortu

ué a

uPo

Household Use Only

Seulement pour applications domestiques

Ser. Nº.:

137750779

Manufactured:

October 2014

Rating Plate

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Cup Warming Drawer (CW24)

General Information

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#9001337 - Revision A - September, 2015

Refer to this key for an example of the model numbers.

Model: ICBCW 24 / S

International Designation

Product Configuration

Size

Finish

Product Configuration

CW = Cup Warming Drawer

Size

24 = 24 - inch wide unit

Finish

S Classic Stainless Steel

B Black Glass

• Two finishes

Classic Stainless Steel

Black Glass

• Hidden electronic touch controls

• 420 watt heating element with temperature control

range of 85° F to 175° F

• Automatic shut off

• Delayed Start

• Push - pull drawer opening

• Full extension, ball-bearing drawer glides

• Removable, non-slip drawer liner

• Sabbath mode

CUP WARMING DRAWER FEATURES

MODEL NUMBER KEY

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Cup Warming Drawer (CW24)

Electronics

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#9001337 - Revision A - September, 2015

Cup Warming Drawer Electronics

This section describes the basic operation of the Cup Warming Drawer (CW24) electronics and how the user inter-

face responds to input commands. The user interface has three buttons that use a relay to open and close switches.

User Interface Buttons (See Figure 2-1)

ON/MENU Button

Turns unit on.•

Cycles user interface between menu options TEMP, TIMER, and DELAY START.•

Used with MORE button to enter Sabbath mode.•

Used with LESS/OFF button to exit Sabbath mode.•

LESS/OFF Button

Decreases TEMP, TIMER, and DELAY START settings.•

Depressed for three seconds turns the CW24 off.•

Used with ON/MENU button to exit Sabbath mode.•

MORE Button

Increases TEMP, TIMER, and DELAY START settings.•

Used with ON/MENU button to enter Sabbath mode.•

Figure 2-1. CW24 User Interface

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Electronics

Cup Warming Drawer (CW24)

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#9001337 - Revision A - September, 2015

General Features of the User Interface

Temperature

Temperature Range is 85° F to 175° F, and increases and decrease by 10° intervals.•

Temperature display goes in a circle. •

If 175° F and MORE button is pressed, temperature goes to 85° F.•

If 85° F and LESS/OFF is pressed, temperature goes to 175° F.•

Timer

Timer is programmable from 1 minute to 4 hours.•

Timer increases and decreases by different increments.•

From 1 minute to 15 minutes changes by one minute intervals.•

From 15 minutes to 1 hour changes by five minute intervals.•

From 1 hour to 4 hours by ten minute intervals.•

Delay Start

Delay Start is programmable from 1 minute to 9 hours, 50 minutes.•

Delay Start increases and decreases by different increments.•

From 1 minute to 15 minutes and changes by one minute intervals.•

From 15 minutes to 1 hour and changes by five minute intervals.•

From 1 hour to 9 hours, 50 minutes and changes by ten minute intervals.•

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Cup Warming Drawer (CW24)

Electronics

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#9001337 - Revision A - September, 2015

User Interface Operation

Program the unit without DELAY START

Press ON/MENU. TEMP and 85° F flashes on the1

display (See Figure 2-2).

Press the MORE button to increase the tempera-2

ture.

NOTE: The display flashes three times then shuts off if

no other button is pressed.

Press ON/MENU when desired temperature is set.3

TIMER and 0h00 flashes on the display (See Figure4

2-3).

Press LESS/OFF or MORE button to set the amount5

of time the unit is to run between one minute and

four hours.

Press ON/MENU when desired time is set.6

DELAY START and 0h00 flashes on the display.7

Press ON/MENU, the temperature flashes for three8

seconds, then the fan comes on.

The display alternates between the setpoint temper-9

ature and the remaining time on the timer.

Program the unit with DELAY START

Press ON/MENU. TEMP and 85° F flashes on the1

display (See Figure 2-2).

Press the MORE button to increase the tempera-2

ture.

NOTE: The display flashes three times, then shut off if

no other button is pressed.

Press ON/MENU when desired temperature is set.3

TIMER and 0h00 flashes on the display (See Figure4

2-3).

Press LESS/OFF or MORE button to set the amount5

of time the unit is to run between one minute and

four hours.

Press ON/MENU when desired time is set.6

DELAY START and 0h00 flashes on the display.7

Press LESS/OFF or MORE button to set the amount8

of time before the unit starts, between one minute

and nine hours, 50 minutes (See Figure 2-4).

Press ON/MENU when the desired time is set.9

Temperature flashes for three seconds, then the dis-10

play shows the time remaining until the unit starts.

When the DELAY START time expires, the unit11

starts and the display alternates between the set-

point temperature and the remaining time on the

timer.

Figure 2-2. Setting Temperature

Figure 2-3. Setting Timer

Figure 2-4. Delay Start Display

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Electronics

Cup Warming Drawer (CW24)

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#9001337 - Revision A - September, 2015

Turn the Unit Off

The Cup Warming Drawer can be shut off at any time or

during any mode, except Sabbath mode.

Press and hold the LESS/OFF button for three sec-1

onds.

Display shuts off.2

Fan runs for 60 seconds then shut off.3

Entering Sabbath Mode

Press and hold the ON/MENU button and the1

MORE button together for 3 seconds.

Heater comes on High (175°) and remain on indefi-2

nitely.

Display shows SAb (See Figure 2-5).3

NOTE: Loss of power causes the Cup Warming Drawer

to exit Sabbath Mode.

Exiting Sabbath Mode

Press and hold the ON/MENU button and the1

LESS/OFF button together for 3 seconds.

Fan runs for 60 seconds and then shut off.2

Figure 2-5. Sabbath Mode

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Cup Warming Drawer (CW24)

Component Removal

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#9001337 - Revision A - September, 2015

Drawer is heavy, use care not to damage drawer

slides or scratch frame of unit.

ELECTRICAL SHOCK HAZARD - DISCONNECT

ELECTRICAL SUPPLY TO UNIT BEFORE ATTEMPT-

ING THE FOLLOWING PROCEDURES.

COMPONENT ACCESS AND REMOVAL

This section explains how to access and remove components from a Cup Warming Drawer, model CW24.

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. When following a component removal

procedure, it may be necessary to reference another component removal procedure listed earlier in this section.

NOTE: Before continuing, please take note of the WARNINGS and CAUTIONS below.

- IF IT IS NECESSARY TO REMOVE A WARMING DRAWER UNIT FROM ITS INSTALLATION, REMEMBER

THAT THEY ARE HEAVY AND COULD FALL RESULTING IN SERIOUS INJURY. PULLING A UNIT FROM

ITS INSTALLATION SHOULD ONLY BE PERFORMED BY A TRAINED AUTHORIZED SERVICE

TECHNICIAN OR INSTALLER.

- TO AVOID ELECTRIC SHOCK, POWER TO A WARMING DRAWER UNIT MUST BE DISCONNECTED

WHENEVER ACCESSING AND/OR REMOVING COMPONENTS POWERED BY ELECTRICITY OR

COMPONENTS NEAR OTHER ELECTRICAL COMPONENTS.

- Metal edges may be sharp. Use caution when servicing unit to avoid personal injury.

- The heating element can get very hot. To avoid personal injury use caution when servicing the unit,

making sure the heater has cooled before working on or around it.

- If accessing components under the shell, the insulation must be properly reinstalled and positioned.

Failure to do so may lead to damage to the surrounding cabinetry.

- Low voltage is used for most electronic control components. To avoid damaging the appliance, DO NOT

apply 115V AC to electronic control components.

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Component Removal

Cup Warming Drawer (CW24)

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#9001337 - Revision A - September, 2015

Anti-sliding Liner

To remove the anti-sliding liner, first open the cup warm-

ing drawer, then lift the anti-sliding liner by the tappered

corner located in the right rear or left front of the drawer.

Tray and Front Cover Assembly

To remove the tray and front cover assembly, first open

the cup warming drawer, then (See Figure 3-1):

1. Use a T-20 to extract two screws entering the left

and right slide horizontally.

2. Use a T-10 to extract the two screws entering the

left and right slide vertically.

3. Pull the tray and cover assembly forward and lift

from the slides.

Right and Left Slides

The right slide includes the Push To Open (PTO)

assembly. To remove either slide, first remove the tray

and cover assembly, then (See Figure 3-2):

1. Remove the unit from the installation.

2. Use a T-20 to extract the four screws on the lower

side of the cup warming drawer, on the side of the

slide to be removed.

3. Remove the slide.

Exhaust Fan, User Interface, and Exhaust

Fan Cover

To remove the exhaust fan assembly, first remove the

tray and cover assembly, then (See Figure 3-3):

1. Remove the unit from the installation.

2. Remove the power cord from the back of the unit.

3. Use a T-20 to extract the four screws on the left side

of the unit holding the exhaust fan assembly.

Figure 3-1. Screws Tray and Front Cover

Figure 3-2. Screws for Slides

Figure 3-3. Screws for Exhaust Fan Housing

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Cup Warming Drawer (CW24)

Component Removal

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#9001337 - Revision A - September, 2015

User Interface and Exhaust Fan Cover

To remove the user interface and exhaust fan cover, first

remove the fan assembly, exhaust fan cover, and user

interface, then (See Figure 3-4):

1. Use a T-20 to extract the six screws on the top

and bottom of the exhaust fan cover.

2. Lift the rear of the exhaust fan cover and push it for-

ward over the fan retaining screws.

3. Disconnect the six pin connector from the user inter-

face.

4. Disconnect the ground wire spade connector from

the fan assembly support.

User Interface

To remove the user interface, first remove the exhaust

fan cover, with the user interface attached, then (See

Figure 3-5):

1. Use a flat bladed screw driver to depress the two

tabs on the back of the user face at the top, while

pushing the user interface out of the exhaust fan

cover.

2. Use a flat bladed screw driver to depress the two

tabs on the back of the user face at the bottom,

while pushing the user interface out of the exhaust

fan cover.

3. Remove the user interface.

Exhaust Fan and Heater

To remove the exhaust fan and heater, first remove the

exhaust fan cover and user interface, then (See Figure

3-6):

1. Use a T-20 to extract the four screws on the bottom

of the fan cover.

2. Disconnect the red and white wire from the male

side of the power cord receptacle.

Male Power Receptacle

To remove the male power receptacle, first remove the

exhaust fan cover and user interface, then (See Figure

3-6):

1. Use a T-20 to extract the four screws on the bottom

of the fan cover.

2. Depress the tabs on the inside of the fan cover to

remove the male power receptacle.

Figure 3-5. User Interface

Figure 3-4. Screws for Exhaust Fan Cover

Figure 3-6. Exhaust Fan and Heater

Tabs

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Component Removal

Cup Warming Drawer (CW24)

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#9001337 - Revision A - September, 2015

Tray and Front Cover Removal

To remove the tray and front cover as seperate parts,

first remove the tray and front cover as an assembly

from the cup warming drawer, then:

1. Use a T-20 to extract the six screws going into the

drawer back and the left and right bracket (See

Figure 3-7).

2. Remove the drawer back.

3. Use a T-20 to extract the four screws attaching the

front cover to the bottom of the tray (See Figure 3-

8).

4. Use a T-20 to extract the four screws attaching the

front of the tray to the front cover (See Figure 3-9).

5. Seperate the front cover and tray.

Figure 3-9. Screws Tray Front to Front Cover

Figure 3-7. Screws Drawer Back to Front Cover

Figure 3-8. Screws Front Cover to Tray Bottom

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Cup Warming Drawer (CW24)

Component Removal

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Figure 3-10. Cavity Top

Cavity Top

To remove the cavity top, first remove the tray and front

cover as an assembly from the cup warming drawer,

then (See Figure 3-10):

1. Use a T-20 to extract the six screws, three on each

side.

2. Use a T-20 to extract the three screws at the back

bottom of the cavity top.

3. Remove the cavity top.

Right and Left Trim

To remove the right or left trim, first remove the cavity

top, then (See Figure 3-11):

1. Use a T-20 to extract the two screws from the trim

piece.

2. Rotate the back of the trim piece forward.

3. Slide the trim down the support tab and off the unit.

Cavity Cover

To remove the cavity cover, first remove the cavity top,

then (See Figure 3-12):

1. Use a drill to drill out the seven M3 x 5 mm pop riv-

ets on each side of the unit

2. Pull the cavity cover forward out of the unit.

NOTE: Order new pop rivets from the Parts Manual.

Lower Trim, and Upper Trim

To remove the lower and upper trim, first remove the

cavity top, then (See Figure 3-12):

1. Use a drill to drill out the seven M3 x 5mm pop riv-

ets.

2. Remove the upper and lower trim.

NOTE: Order new pop rivets from the Parts Manual.

Figure 3-11. Right and Left Trim

Figure 3-12. Cavity Cover, Lower and Upper Trim

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Cup Warming Drawer (CW24)

Troubleshooting Guide

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TROUBLESHOOTING GUIDES

This section of the manual contains troubleshooting information which will help the Certified Service Technician trou-

bleshoot a Wolf Cup Warming Drawer (CW24).

How to Use the General Troubleshooting Guide

Find the general fault in following table, note the possible causes, then attempt the recommend solutions in the

order they are presented.

Before continuing, take note of the WARNINGS and CAUTIONS at the bottom of this page.

- IF REMOVING A CUP WARMING DRAWER FROM ITS INSTALLATION FOR TROUBLESHOOTING PUR-

POSES, REMEMBER THAT THE UNIT IS HEAVY AND COULD TIP AND/OR FALL WHEN PULLED FOR-

WARD. RESULTING IN SERIOUS INJURY OR DEATH.

- TO AVOID ELECTRIC SHOCK, POWER TO THE UNIT MUST BE DISCONNECTED WHENEVER ACCESS-

ING AND/OR REMOVING COMPONENTS POWERED BY ELECTRICITY OR COMPONENTS NEAR OTHER

ELECTRICAL COMPONENTS. IF THE UNIT IS PLUGGED IN, BUT HAS NOT BEEN SWITCHED ON BY

PRESSING THE UNIT ON/OFF KEY, 115 VOLTS AC IS STILL PRESENT AT THE USER INTERFACE.

- Metal edges may be sharp. Use caution when servicing unit to avoid personal injury.

- The heating element can get very hot. To avoid personal injury use caution when servicing the unit,

making sure the heater has cooled before working on or around it.

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Troubleshooting Guide

Cup Warming Drawer (CW24)

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#9001337 - Revision A - September, 2015

PROBLEM POSSIBLE CAUSE TEST / ACTION

A. Unit Does Not Function

B. No Heat

C. No Fan

D. Unit will not go into or out of

Sabbath mode.

No Power to Unit

Disconnected Cable or Broken Wiring

No Power to Unit

User Interface is not setting temperature

in the unit.

Heater is open1

TCO is open2

Broken wire in heating circuit3

No Power to Unit

User Interface is not turning the unit on

Fan is open1

Broken wire in fan circuit2

Fan is blocked or dirty

User interface is not working correctly

Check power receptacle for proper voltage.1

Confirm Ground is good.2

Ensure circuit is dedicated.3

Inform consumer of electrical supply issue.4

Confirm voltage on J6 harness from J6-1 to1

J6-4.

Confirm good ground from the unit to a2

separate ground terminal on a different

receptacle.

Repair or replace wiring damage.3

Check power receptacle for proper voltage.1

Confirm Ground is good.2

Ensure circuit is dedicated.3

Inform consumer of electrical supply issue.4

Switch unit ON and confirm temperature is1

being set on the user interface.

Replace user interface.2

Measure resistance on J6 harness from J6-1

5 to J6-6. Resistance should be 33.8

Ohms ± 10%.

Replace the Fan, which includes the heat-2

ing element, TCOs, and fan.

Check power receptacle for proper voltage.1

Confirm Ground is good.2

Ensure circuit is dedicated.3

Inform consumer of electrical supply issue.4

Switch unit ON and program a DELAY1

START. Verify DELAY START begins to

count down.

Replace user interface.2

Measure resistance on J6 harness from J6-1

2 to J6-3. Resistance should be 56.2

Ohms ± 10%.

Replace the Fan, which includes the heat-2

ing element, TCOs, and fan.

Clean the fan.

Replace the user interface.

General Troubleshooting Guide

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Cup Warming Drawer (CW24)

Troubleshooting Guide

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#9001337 - Revision A - September, 2015

PROBLEM POSSIBLE CAUSE TEST / ACTION

E. Drawer Does Not Slide

Smoothly

F. Push To Open (PTO) is not

operating correctly.

Drawer Overloaded

Drawer Misaligned

Drawer Rails are binding

Drawer Overloaded

Drawer Misaligned

Drawer Rails are binding

PTO is damaged

Drawer is overloaded. Maximum weight is1

25 pounds.

Reduce and/or redistribute drawer contents.2

Drawer is out of alignment. Fully extend the1

drawer and close completely to realign.

Drawer is not installed correctly and is bind-2

ing.

Drawer is not installed correctly and is tilted.3

Correct alignment issue.4

Drawer rails are loose.1

Drawer rails have debris in them.2

Tighten or replace drawer rail.3

Drawer is overloaded. Maximum weight is1

25 pounds.

Reduce and/or redistribute drawer contents.2

Drawer is out of alignment. Fully extend the1

drawer and close completely to realign.

Drawer is not installed correctly and is bind-2

ing.

Drawer is not installed correctly and is tilted.3

Correct alignment issue.4

Drawer rails are loose.1

Drawer rails have debris in them.2

Tighten or replace drawer rail.3

Replace right drawer rail.

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Cup Warming Drawer (CW24)

Technical Data

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#9001337 - Revision A - September, 2015

Technical Data

Power Requirements 120 VAC, Single Phase, 60 Hertz

Watts 450 Watts (rated)

Amps 5 Amps (rated)

Circuit Requirements 10 amp Dedicated Circuit

Temperature Range 85° F to 175° F, 10° F intervals

Element type Radiant

Heater Resistance 33.8 Ohms ± 10%

Fan Motor Resistance 56.2 Ohms ± 10%

Thermal Cut Out (TCO) 1 Temperature 176° F

TCO 2 Temperature 248° F

Page 18

Cup Warming Drawer (CW24)

Wire Diagrams

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#9001337 - Revision A - September, 2015

456

J6 Board

J6 Connector

on Harness

Fan Motor

Ground

TCO 1

TCO 2

Heater

Male Plug

Harness in Exhaust Fan Housing

Ground

to Fan

Board in User Interface

Relay 1

Relay 2

J6-4 & Relay 2

J6-4 & Relay 1

J6-6

J6-3

User Interface Button

White Wires

120 Volts Line In

Neutral

Ground

Key

WIRING DIAGRAM

MODEL: CW24

- This wiring information is provided for use by qualified service personnel only.

- Disconnect appliance from electrical supply before begining service.

- Be sure all grounding devices are connected when service is complete.

- Failure to observe the above warnings may result in severe electrical shock.

Wolf CW24 User manual

Wolf CW24 User manual

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