Subzero WD30 Manuale utente

General Information 2

Installation Information 5

Controls & Operation 8

Component Access & Removal 17

Troubleshooting Guide 24

Technical Data 30

Wiring Diagrams 31

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WD30

Service Manual

Page 2

WARMING DRAWER

General Information

1-2

TECHNICAL ASSISTANCE

If you should have any questions regarding a Wolf

appliance and/or this manual, please contact:

Wolf Appliance Company, LLC.

ATTN: Service Department

P.O. Box 44988

Madison, WI 53744-4988

Customer Service & Parts / Warranty Claims

Phone #: (800) 332 - 9513

Technical Assistance

Phone #: (800) 919 - 8324

Customer Service & Technical Assistance

Facsimile #: (608) 441 - 5887

Parts / Warranty Claims

Facsimile #: (608) 441 - 5886

Service Department e-mail Address

[email protected]

Office Hours:

7:00 AM to 7:00 PM Central Time

Monday through Friday

This manual is designed to be used by Authorized Service Personnel only. Wolf Appliance Company, LLC.

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 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.

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.

The Service Technician should read the complete instructions contained in this Technical Service and Parts Manual

before initiating any repairs on the Wolf Appliance.

INDICATES THAT HAZARDOUS OR UNSAFE PRAC-

TICES 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 contained in this manual are the copyright property of Wolf Appliance Company, LLC.

Neither this manual nor any information or images contained herein may be copied or used in whole or in part with-

#802981 Rev. A Jan. 2005

Page 3

WARMING DRAWER

General Information

1-4

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, 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 on the following parts: heat element, electronic control

system.

NOTE: This warranty only applies to products installed for normal residential use in the United States or Canada.

NON RESIDENTIAL Warranty Summary

• Two year TOTAL PRODUCT warranty, parts and labor.

NOTE: This warranty only applies to products installed in test kitchens, culinary and school kitchens, and other

installations which help promote Wolf Appliance products. Restaurant installations and other similar commercial

applications carry no warranty.

Warranty Notes:

•All warranties begin at the time of the

unit's initial installation.

•All Warranty and Service information

collected by Wolf Appliance Company,

LLC. is arranged and stored under the

unit serial 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 and 1-2 for serial tag

location and Figures 1-3 and 1-4 for

serial tag layout.

Wolf Appliance Company

FITCHBURG, WI 53719

MODEL NO.

WD30

SERIAL NO.

13000001

120

CUS

LISTED

USE ON 2 WIRE 60HZ AC ONLY

MADE IN USA

Figure 1-2. Serial Tag Layout

POWER

ON/OFF

ADJUST

PRESET

HIGH

MEDIUM

LOW

PROOF

Serial Tag Location

(back of drawer frame front plate)

Figure 1-1. Serial Tag Location

#802981 Rev. A Jan. 2005

Page 4

General Information

WARMING DRAWER

1-5

POWER

ON/OFF

ADJUST

PRESET

HIGH

MEDIUM

LOW

PROOF

Control Panel Layout

The diagram at right illustrates

the layout of the Warming

Drawer control panel.

NOTE: The control panel is

hidden when the drawer is

closed. When the drawer is

opened, the control panel can

be found at the right side of the

front plate.

POWER

ON/OFF

ADJUST

PRESET

HIGH

MEDIUM

LOW

PROOF

Wire Rack for

Stacking Food

Optional Drawer Fronts

Hidden Electronic Control

(when drawer is closed)

with Preset and Variable

Temperature Settings and

Programmable Automatic

Shut-off

Galvanized Exterior

Stainless Steel Interior

Removable Stainless

Steel Drawer Box

450-Watt Heating

Element (Not Shown)

Ball Bearing Drawer Glides

MODEL FEATURES

LED Temperature

Display

ON/OFF Key with

LED Indicator

Variable Temperature

Keys

Pre-set Temperature

Keys with LED

Indicators

#802981 Rev. A Jan. 2005

Page 5

WARMING DRAWER

Installation Information

2-2

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. 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.

Electrical Requirements

• 110 to 120 Volts AC, 60Hz, 15 ampere fused electrical supply

• Separate electrical circuit serving only this appliance

• A properly grounded 3-prong receptacle

Line

Voltage

(Power)

Neutral

Ground

•TOAVOID SHOCK HAZARD, THE INSTALLATION SITE MUST BE EQUIPPED WITH APROPERLY

GROUNDED 3-SLOT RECEPTACLE TO MATCH THE 3-PRONG (GROUNDED) POWER SUPPLYCORD

PROVIDED ON THE APPLIANCE.

•TOAVOID SHOCK HAZARD, NEVER REMOVE THE GROUND PRONG FROM THE PLUG OF THE POWER

SUPPLYCORD.

Ground Prong

Figure 2-1. Electrical Receptacle & Power Cord

#802981 Rev. A Jan. 2005

Page 6

FRAME

29-7/8"

(759)

23"

(584)

23-1/2" min

(597)

*28-1/2"

(724)

FRAME

10-1/4"

(260)

*9-1/4"

(235)

NOTE:

If installed below Wolf

wall oven, rail between

appliances must be

minimum 1-1/4” (318 mm) thick.

(102)

(127)

* Dimension may vary by ± 1/8" ( ± 3 mm)

= Electrical outlet location

NOTE:

1.5" X 1.5"

(3.8 mm X 3.8 mm)

nti-Tip Block

must be installed.

NOTE: Dimensions in parentheses are in millimeters.

Installation Information

WARMING DRAWER

2-3

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).

NOTE: Prior to serial #13005870, the warming drawer could not be installed in an Integrated application. See

rough-in dimensions for an Integrated application on following page.

For complete installation instructions, refer to the installation guide.

Figure 2-2. Non-Integrated Warming Drawer Installation below a Wall Oven

#802981 Rev. A Jan. 2005

Page 7

WARMING DRAWER

Installation Information

2-4

FRAME

29-7/8"

(759)

25-1/2" min

(648)

*29-15/16"

(760)

FRAME

10-1/4"

(260)

*10-3/8"

(264)

* Dimension may vary by ± 1/8" ( ± 3 mm)

(102)

= Electrical outlet location

NOTE:

1.5" X 1.5"

(3.8 mm X 3.8 mm)

nti-Tip Block

must be installed.

(127)

NOTE:

If installed below Wolf

wall oven, rail between

appliances must be

minimum 2-3/8” (60 mm) thick.

NOTE: Dimensions in parentheses are in millimeters.

23"

(584)

BACK OF

UNIT TO

BACK OF

FRAME

Minimum required cabinet width = 33" (838 mm)

Minimum required cabinet depth = 26" (660 mm)

NOTE:

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.

Figure 2-3. Integrated Warming Drawer Installation below a Wall Oven

#802981 Rev. A Jan. 2005

Page 8

WARMING DRAWER

Electronic Control Information

3-2

Figure 3-1A. Electronic Control System Diagram (Prior to Serial #13005870)

CONTROL

BOARD

HEAT ELEMENT

POWER CORD

POWER

BOARD

TOUCH CONTROL

PANEL/BOARD

THERMAL

PROTECTOR

GREEN (GROUND)

GROUND TO BE MOUNTED

TO STUD ON CAVITY

WHITE

4-PIN RIBBON

BLACK BLACK

8-PIN RIBBON

POWER

ON/OFF

ADJUST

PRESET

HIGH

MEDIUM

LOW

PROOF

MOV MOV

FILTER

WHITE

BLACK

P1 P2 P3 P4

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-

perature and temperature range at various locations on the control panel. The power board provides 5 volts DC

power to the control board, a low volt temperature sense signal to the control board and 115 volts AC power to the

heat element. The auto-reset thermal protector provides overheat protection in the event of control failure. (See

Figures 3-1A & 3-1B) Input operations performed at the control panel are described on the following pages.

Figure 3-1B. Electronic Control System Diagram (Starting with Serial #13005870)

CONTROL

BOARD

HEAT ELEMENT

POWERCORD

POWER

BOARD

TOUCH CONTROL

PANEL/BOARD

THERMAL

PROTECTOR

GREEN (GROUND)

GROUNDTOBE MOUNTED

TOSTUD ON CAVITY

WHITE

4-PIN RIBBON

8-PIN RIBBON

POWER

ON/OFF

ADJUST

PRESET

HIGH

MEDIUM

LOW

PROOF

WHITE

BLACK

P1 P2 P3 P4

WHITE

BLACK

#802981 Rev. A Jan. 2005

Page 9

Electronic Control Information

WARMING DRAWER

3-3

CONTROL PANEL LAYOUT

The diagram at right shows the layout of the control

panel, behind which is the control board. The LED

readout, ON/OFF indicator light and temperature range

indicator lights are part of the control board. (See

Figure 3-2)

NOTE: The control panel is hidden when the drawer is

closed. When the drawer is opened, the control panel

can be found at the right side of the front plate.

POWER

ON/OFF

ADJUST

PRESET

HIGH

MEDIUM

LOW

PROOF

Temp. Range

Indicators

ON/OFF

Indicator

LED Temp

Readout

ON/OFF Key

Variable

Temp

Adjustment

Keys

Preset Temp

Keys

BASIC ELECTRONIC CONTROL INPUT OPERATIONS

The following illustrations show the basic input operations performed and/or observed at the control panel. Power-

up mode, switching the unit ON and OFF, selecting preset temperature settings and adjusting temperature setting

with the adjustment keys will be explained.

WHEN IN OFF MODE, 115 VOLTS AC IS STILL

PRESENT AT POWER BOARD.

Figure 3-2. Control Panel Layout

Figure 3-3. Power-up Mode

Power-up Mode

When 115V AC is initially applied to the unit, all LED

segments of each digit on the temperature display illu-

minate individually, then the Power ON/OFF indicator

LED and temperature range indicator LED’s (from top to

bottom) will illuminate individually. This is followed by

all LED’s illuminate simultaneously for approximately

five seconds (See Figure 3-3). At the end of diagnostic

mode, the unit displays the software revision level

(number 100 at this writing), then enters OFF mode.

NOTE: This LED illumination sequence also occurs if

power to the unit is interrupted for more than four sec-

onds and/or diagnostic mode (which is covered later in

this manual) is initiated.

POWER

ON/OFF

ADJUST

PRESET

HIGH

MEDIUM

LOW

PROOF

All LED seg-

ments of

each digit on

temp. display

illuminate

individually,

then ON/OFF

and tempera-

ture range

indicator

LED’s illumi-

nate individu-

ally, then all

LED’s illumi-

nate simulta-

neously for

approximate-

ly five sec-

onds.

#802981 Rev. A Jan. 2005

Page 10

WARMING DRAWER

Electronic Control Information

3-4

Unit ON/OFF

As mentioned earlier, the unit enters OFF mode after

power-up mode. By pressing and releasing the Power

ON/OFF key, ON mode is initiated and power is allowed

past the electronic control system to the heater circuit

and the LED’s. When ON mode is initiated, the unit

defaults to the preset low temperature setting (set at the

factory to 150°F) which will appear in the readout win-

dow and the low temperature range indicator will illumi-

nate. (See Figure 3-4)

When the temperature in the cavity is climbing up to

temperature setting, the heater will be energized con-

stantly until the cavity reaches 10°F below temperature

setting, then the heater will “duty cycle” on and off until

the temperature is 1°F above temperature setting; the

heater is then de-energized. When the temperature

falls 1°F below temperature setting, the heater again

duty cycles.

To switch the unit to OFF mode, press the Power

ON/OFF key while the unit is ON.

NOTE: Whenever the heat element is energized, the

far right decimal point will illuminate.

NOTE: After the last key stroke is performed in ON

mode, the electronic control begins the automatic shut-

off countdown. The automatic shut-off time interval is

set at the factory for four hours, but can be adjusted for

zero to four hours in one hour increments. This will be

covered later in the manual.

POWER

ON/OFF

ADJUST

PRESET

HIGH

MEDIUM

LOW

PROOF

LOW

Indicator

Illuminates

ON/OFF

Indicator

Illuminates

Preset LOW

Temperature

Setting

Appears

Figure 3-4. Switching Unit ON

Selecting Preset Temperature Settings

After the unit has been switched to ON mode, there are

four preset temperature settings to choose from:

• HIGH (190°F)

• MEDIUM (170°F)

• LOW (150°F)

• PROOF (100°F)

By pressing the appropriate key, the preset temperature

setting will be initiated and that temperature setting will

appear in the temperature readout window. The MEDI-

UM preset temperature key was used in this example.

(See Figure 3-5)

NOTE: Preheat time (the time it takes to reach temper-

ature setting) is as follows:

• HIGH - 20 Minutes

• MEDIUM - 15 Minutes

• LOW - 8 Minutes

• PROOF - 0 Minutes

NOTE: When the temperature setting is changed by

pressing the preset keys, the new temperature setting

will be displayed for three seconds, then actual temper-

atures will be displayed until the new temperature set-

ting is achieved.

POWER

ON/OFF

ADJUST

PRESET

HIGH

MEDIUM

LOW

PROOF

Temp Range

Indicator

Illuminates

ON/OFF

Indicator is

Illuminated

Selected

Preset

Temperature

Setting

Appears

Figure 3-5. Selecting Preset Temperature Settings

Decimal

Point

Illuminates

when Heat

Element is

Energized

#802981 Rev. A Jan. 2005

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