Wolf Range V Series HDR Service Manual

ONE POWERFUL PACKAGE

V SERIES HDR

GAS RANGES

SERVICE MANUAL

TOPS

Open Top

Hot Top

Griddle Top

Work Surface

BASES

Standard Oven

Convection Oven

Cabinet Base

- NOTICE -

This manual is prepared for use by trained service technicians and
should not be used by those not properly qualified. If you have
attended a service school for this product, you may still be qualified to
perform the procedures described in this manual. This manual is not
intended to be all encompassing. If you have not attended a service
school for this product, you should read, in its entirety, the repair
procedure you wish to perform to determine if you have the necessary
tools, instruments and skills required to perform the procedure.
Procedures for which you do not have the necessary tools,
instruments and skills should be performed by a trained service
technician.

VULCAN-HART

DIVISION OF ITW FOOD EQUIPMENT GROUP, LLC

WWW.VULCANHART.COM

For additional information on Vulcan- Hart or to locate an authorized parts and service

provider in your area, visit our website at www.VulcanHart.com.

3600 NORTH POINT BLVD.

BALTIMORE, MD 21222

F-37418 (03-09)

IMPORTANT FOR YOUR SAFETY

THIS MANUAL HAS BEEN PREPARED FOR PERSONNEL QUALIFIED TO INSTALL GAS
EQUIPMENT, WHO SHOULD PERFORM THE INITIAL FIELD START-UP AND
ADJUSTMENTS OF THE EQUIPMENT COVERED BY THIS MANUAL.

POST IN A PROMINENT LOCATION THE INSTRUCTIONS TO BE FOLLOWED IN THE
EVENT THE SMELL OF GAS IS DETECTED. THIS INFORMATION CAN BE OBTAINED
FROM THE LOCAL GAS SUPPLIER. IN THE EVENT OF A POWER FAILURE, DO NOT
ATTEMPT TO OPERATE THIS DEVICE.

IMPORTANT

IN THE EVENT A GAS ODOR IS DETECTED, SHUT DOWN UNITS AT MAIN SHUTOFF
VALVE AND CONTACT THE LOCAL GAS COMPANY OR GAS SUPPLIER FOR SERVICE.

FOR YOUR SAFETY

DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS OR LIQUIDS IN
THE VICINITY OF THIS OR ANY OTHER APPLIANCE.

WARNING: SHUT OFF THE GAS BEFORE SERVICING THE UNIT.
WARNING: PRIOR TO LIGHTING, CHEC K ALL JOINTS IN THE GAS SUPPLY LINE

FOR LEAKS. USE SOAP AND WATER SOLUTION. DO NOT USE AN OPEN FLAME.

A. CHECK ALL JOINTS PRIOR TO THE GAS VALVE (SOLENOID)

BEFORE LIGHTING UNIT.

B. CHECK ALL JOINTS BEYOND GAS VALVE (SOLENOID)

AFTER UNIT IS LIT.

WARNING: IMPROPER INSTALLATION, ADJUSTMENT, ALTERATION, SERVICE OR
MAINTENANCE CAN CAUSE PROPERTY DAMAGE, INJURY OR DEATH. READ THE
INSTALLATION, OPERATING AND MAINTENANCE INSTRUCTIONS THOROUGHLY
BEFORE INSTALLING OR SERVICING THIS EQUIPMENT.

WARNING: ELECTRICAL AND GROUNDING CONNECTIONS MUST COMPLY WITH
THE APPLICABLE PORTIONS OF THE NATIONAL ELECTRICAL CODE AND/OR
OTHER LOCAL ELECTRICAL CODES.

WARNING: APPLIANCES EQUIPPED WITH A FLEXIBLE ELECTRIC SUPPLY CORD
ARE PROVIDED WITH A THREE-PRONG GROUNDING PLUG. IT IS IMPERATIVE
THAT THIS PLUG BE CONNECTED INTO A PROPERLY GROUNDED THREE-PRONG
RECEPTACLE. DO NOT REMOVE THE GROUNDING PRONG FROM THIS PLUG.

IN THE EVENT OF A POWER FAILURE, DO NOT ATTEMPT TO OPERATE THIS DEVICE.

Page 2 of 36

TABLE OF CONTENTS

GENERAL

Introduction
Installation
Operation
Cleaning
Lubrication
Tools
Specifications

REMOVAL AND REPLACEMENT OF PARTS

Electrical Lockout / Tagout Procedure
Gas Lockout / Tagout Procedure
Units Mounted On Casters
Covers and Panels
Manifold Cover
Kick Panel
Component Removal
Oven Control Panel(S Model)
Oven Control Panel (C Model)
Pilot Safety Valve and temperature Control Assembly (S Model)
Pilot Safety Valve (S Model)
Temperature Control (S Model)
Temperature Control (C Model)
Solenoid, Pilot Safety and Manual Gas Shut-Off Valve Assembly (C Model)
Solenoid (C Model)
Pilot Safety Valve (C Model)
Manual Gas Shut-Off Valve (C Model)
Oven Pilot Assembly
Oven Burner Assembly
Oven Burner Nozzle and Gas Orifice
Pilot Quick Disconnect Valve
Top Section Burner (Open Top)
Top Section Burner (Char Broiler)
Top Section Burner (French/Hot Top and Griddle)
Top Section Burner Valve
Fan Control Switch (C Model)
Convection Motor (C Model)
Oven Door Microswitch (C Model)

SERVICE PROCEDURES AND ADJUSTMENTS

Gas Leak Check
Gas Pressure Check
Gas Pressure Regulator Adjustment
Oven Pilot Flame Check and Adjustment
Oven Burner Nozzle and Gas Orifice Check
Air Shutter Adjustment

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Top Burner Adjustment
Oven Burner Adjustment
Oven Door Microswitch Test
Fan Control Switch Test (C Model)
Convection Oven Motor Test (C Model)
Solenoid Test (C Model)

ELECTRICAL OPERATION

Component Function
Sequence of Operation
Wiring Diagrams
120V C Model
208V C Model

TROUBLESHOOTING

Troubleshooting Chart

CONDENSED SPARE PARTS LIST

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GENERAL

INTRODUCTION

Procedures in this manual will apply to all models unless specified. Pictures and illustrations can
be of any model unless the picture or illustration needs to be model-specific.

Before performing maintenance on the equipment, thoroughly read this manual and carefully
follow the instructions in the order given.

Installation

Refer to the Installation and Operation manual for detailed installation instructions.

Operation

Refer to the Installation and Operation manual for specific operating instructions.

Cleaning

Refer to the Installation and Operation manual for cleaning instructions.

Lubrication

The convection motor has sealed bearings and requires no additional lubrication.

TOOLS

Standard

 Standard set of hand tools.
 VOM with A.C. current tester (Any quality VOM with sensitivity of at least 20,000 ohms

per volt can be used).

Special

 Hazardous gas leak tester.
 Manometer.

SPECIFICATIONS

Electrical

Voltage - 120/60/1 or 208/60/1 (optional)
Amps - 15 Amps
Frequency - 50/60 Hz

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Gas Line Pressures

Operating Pressures
Natural - Recommended (in. W.C.) 4.0
Propane - Recommended (in. W.C.) 10.0
Incoming Pressure
Natural - Recommended (in. W.C.) 5.0 min.
Propane - Recommended (in. W.C.) 11.0 min

REMOVAL AND REPLACEMENT OF PARTS

ELECTRICAL LOCKOUT/TAGOUT

Electrical Lockout/Tagout procedures are used to protect personnel working on an electrical
appliance. Perform the following steps when performing any type of maintenance or service on
an electrically operated appliance.

WARNING: Always perform the Lockout/Tagout procedure before removing any sheet
metal panels or attempting to service this equipment. Failure to comply with this
procedure can cause property damage, injury or death.

1. In electrical box, place the unit's circuit breaker to the OFF position.

2. Place a lock or other device on the electrical box cover to prevent someone from placing
the circuit breaker ON.

3. Place a tag on the electrical box cover to indicate that the unit has been disconnected for
service and that power should not be restored until the tag is removed by maintenance
personnel.

4. Disconnect the unit power cord from electrical outlet.

5. Place a tag on the power cord to indicate that oven has been disconnected for service
and power should not be restored until the tag is removed by maintenance personnel.

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GAS LOCKOUT/TAGOUT

The Gas Lockout/Tagout procedure is used to protect personnel working on a gas appliance.
Before performing any maintenance or service that requires gas disconnections, follow these
steps:

WARNING: All gas joints disturbed during servicing must be checked for leaks. Do not
use an open flame. Use a hazardous gas tester or a soap and water solution (Bubbles
indicate a gas leak). Failure to comply can cause property damage, injury or death.

WARNING: Do not operate a gas-fueled appliance if a gas leak is present.

1. Locate the gas valve or inlet.

2. Place the valve in the OFF position.

3. Place a tag on the valve indicating that service is being performed on the equipment and
that the gas must remain off until service is complete.

4. Place a locking device on the gas valve or inlet, preventing connection until the lock is
removed.

5. On the appliance, make sure all flame sources are extinguished and/or removed.

6. Bleed residual gas from the unit inlet line and allow time for the gas to dissipate before
beginning service on the appliance.

UNITS MOUNTED ON CASTERS
WARNING: Units mounted on casters must use a flexible connector (not supplied by

manufacturer) that complies with the Standard for Connectors for Movable Gas
Appliances, ANSI Z21.69, CSA 6.16 and a quick-disconnect device that complies with the
Standard for Quick-Disconnect Devices for Use with Gas Fuel, ANSI-Z21.41, CSA 6.9.

WARNING: If disconnection of the restraint is necessary, turn off the gas supply before
disconnection. Reconnect restraint prior to turning the gas supply on and returning the
unit to its operating location.

NOTE: The unit must be releveled front to back and side to side if it is moved for any reason.

COVERS AND PANELS

Manifold Cover (All Models)

WARNING: Always perform the Electrical Lockout/Tagout procedure before removing
any sheet metal panels or attempting to service this equipment. Failure to comply with
this procedure can cause property damage, injury or death.

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WARNING: Perform the GAS LOCKOUT/TAGOUT procedure before servicing the unit.

1. Perform the ELECTRICAL LOCKOUT/TAGOUT Procedure.

2. Rotate the yellow gas shut-off knob to the OFF position.

Figure 1: Gas Shut-Off Valve Knob

3. Loosen the setscrew in the burner control knobs and remove the knobs.

4. Remove the two (2) drive screws securing the manifold cover in place and remove the
manifold cover.

5. Reverse the procedure to install the manifold cover.

Figure 2: Manifold Cover Removal

Kick Panel (All Models)

WARNING: Always perform the Electrical Lockout/Tagout procedure before removing
any sheet metal panels or attempting to service this equipment. Failure to comply with
this procedure can cause property damage, injury or death.

WARNING: Perform the GAS LOCKOUT/TAGOUT procedure before servicing the unit.

1. Perform the ELECTRICAL LOCKOUT/TAGOUT procedure.

2. Open the kick panel.

3. Remove the two (2) screws securing the left hinge and remove the hinge.

4. Slide the kick panel to the left to disengage it from the hinge.

5. Reverse the procedure to install the kick panel.

Figure 3: Kick Panel Removal

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COMPONENT REMOVAL

Oven Control Panel (S Model)

WARNING: Always perform the Electrical Lockout/Tagout procedure before removing
any sheet metal panels or attempting to service this equipment. Failure to comply with
this procedure can cause property damage, injury or death.

WARNING: Perform the GAS LOCKOUT/TAGOUT procedure before servicing the unit.

1. Perform the ELECTRICAL LOCKOUT/TAGOUT procedure.

2. Perform the GAS LOCKOUT/TAGOUT procedure.

3. Rotate the yellow gas shut-off knob to the OFF position.

Figure 4: Gas Shut-Off Valve Knob

4. Open the kick panel to gain access to the screw securing the control panel.

5. Loosen the setscrew from the yellow gas shut-off knob and remove the knob.

6. Loosen the setscrew from the temperature control knob and remove the knob.

7. Remove the oven knob ring.

8. Remove the screw securing the control panel.

9. Remove the control panel by lifting the bottom up and removing it from the tab located at
the top of the control panel.

10. Reverse the procedure to install the oven control panel.

11. Test the oven to verify proper operation.

Figure 5: S Model Control Panel Removal

Oven Control Panel (C Model)

WARNING: Always perform the Electrical Lockout/Tagout procedure before removing
any sheet metal panels or attempting to service this equipment. Failure to comply with
this procedure can cause property damage, injury or death.

WARNING: Perform the GAS LOCKOUT/TAGOUT procedure before servicing the unit.

1. Perform the ELECTRICAL LOCKOUT/TAGOUT procedure.

2. Perform the GAS LOCKOUT/TAGOUT procedure.

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3. Rotate the yellow gas shut-off knob to the OFF position.

Figure 6: Gas Shut-Off Valve Knob

4. Open the kick panel to gain access to the screw securing the control panel.

5. Loosen the setscrew from the yellow gas shut-off knob and remove the knob.

6. Loosen the setscrew from the temperature control knob and remove the knob.

7. Remove the oven knob ring.

8. Remove the two (2) screws from the temperature control mount bracket located in the
front of the control panel.

9. Remove the screw securing the control panel.

10. Raise the lower end of the control panel to gain access to the fan control switch tabs.

11. Remove the fan control switch by compressing the tabs and pulling the switch out of the
front of the control panel.

12. Tag and disconnect the fan control switch electrical connectors.

13. Remove the control panel by lifting the bottom up and removing it from the tab located at
the top of the control panel.

14. Reverse the procedure to install the oven control panel.

15. Test the oven to verify proper operation.

Figure 7: C Model Control Panel Removal

Pilot Safety Valve and Temperature Control Assembly (S Model)

WARNING: Always perform the Electrical Lockout/Tagout procedure before removing
any sheet metal panels or attempting to service this equipment. Failure to comply with
this procedure can cause property damage, injury or death.

WARNING: Perform the GAS LOCKOUT/TAGOUT procedure before servicing the unit.

1. Perform the OVEN CONTROL PANEL removal procedure for the standard oven.

2. Disconnect the flex line(s) from the pilot safety valve

3. Disconnect the 3/8" union from the bottom of the pilot safety valve.

4. Disconnect the flex line from the top of the temperature control.

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5. Tag and disconnect the electrical connectors to the temperature control.

6. Remove the screws securing the gas mount bracket to the oven.

7. Remove the gas mount bracket, pilot safety valve and temperature control assembly
from the oven.

WARNING: All gas joints disturbed during servicing must be checked for leaks.
Do not use an open flame. Use a hazardous gas tester or a soap and water
solution (Bubbles indicate a gas leak). Failure to comply can cause property
damage, injury or death.

8. Reverse the procedure to install the pilot safety valve and temperature control assembly.

9. Test the oven to verify proper operation.

Figure 8: S Model Pilot Safety Valve and Temperature Control Assembly Removal

Pilot Safety Valve (S Model)

WARNING: Always perform the Electrical Lockout/Tagout procedure before removing
any sheet metal panels or attempting to service this equipment. Failure to comply with
this procedure can cause property damage, injury or death.

WARNING: Perform the GAS LOCKOUT/TAGOUT procedure before servicing the unit.

1. Perform the PILOT SAFETY VALVE AND TEMPERATURE CONTROL

ASSEMBLY removal procedure.

2. Remove the two (2) flex line fittings from the pilot safety valve.

3. Remove the pipe nipple and union fitting from the bottom of the pilot safety valve.

4. Remove the pipe nipple from the top of the pilot safety valve.

5. Remove the screw, lock washer and nut securing the pilot safety valve to the gas mount
bracket and remove the pilot safety valve.

6. Remove any residual tape from the fitting and the pipe nipple and install with new gas­rated (Yellow) Teflon tape.

WARNING: All gas joints disturbed during servicing must be checked for leaks.
Do not use an open flame. Use a hazardous gas tester or a soap and water
solution (Bubbles indicate a gas leak). Failure to comply can cause property
damage, injury or death.

7. Reverse the procedure to install the pilot safety valve.

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