Vulcan Hart 60RRG Manuel de service

24RRG Shown

SERVICE MANUAL

RRG SERIES HEAVY DUTY GAS GRIDDLE

24RRG ML-135339-00024 36RRG ML-135340-00036 48RRG ML-135341-00048 60RRG ML-135342-00060

- NOTICE -

This Manual is prepared for the use of trained Vulcan Service Technicians and should not be used by those not properly qualified.

This manual is not intended to be all encompassing. If you have not attended a Vulcan 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 Vulcan Service Technician.

The reproduction, transfer, sale or other use of this Manual, without the express written consent of Vulcan, is prohibited.

This manual has been provided to you by ITW Food Equipment Group LLC ("ITW FEG") without charge and remains the property of ITW FEG, and by accepting this manual you agree that you will return it to ITW FEG promptly upon its request for such return at any time in the future.

A product of Vulcan-Hart 3600 North Point Blvd Baltimore, MD 21222

F45514 (0214)

RRG SERIES HEAVY DUTY GAS GRIDDLE

TABLE OF CONTENTS

GENERAL .................................................................................................. 3

INTRODUCTION ....................................................................................... 3

INSTALLATION ........................................................................................ 3

OPERATION ........................................................................................... 3

SPECIFICATIONS ...................................................................................... 3

TOOLS ................................................................................................. 3

REMOVAL AND REPLACEMENT OF PARTS ............................................................... 5

CONTROL PANEL ..................................................................................... 5

BACK PANEL .......................................................................................... 5

BULL NOSE ............................................................................................ 5

THERMOCOUPLE ..................................................................................... 6

REMOVAL ......................................................................................... 6

INSTALLATION .................................................................................... 6

TEMPERATURE CONTROLLER ........................................................................ 6

BURNER ............................................................................................... 7

PILOT BURNER ........................................................................................ 7

IGNITION MODULE .................................................................................... 8

DUAL SOLENOID VALVES ............................................................................. 9

SINGLE SOLENOID VALVE ........................................................................... 10

GAS PRESSURE REGULATOR ....................................................................... 11

REMOVAL ........................................................................................ 11

INSTALLATION ................................................................................... 11

GRIDDLE PLATE ASSEMBLY ......................................................................... 11

SERVICE PROCEDURES AND ADJUSTMENTS ........................................................... 12

TEMPERATURE CONTROL CALIBRATION ........................................................... 12

BURNER AIR SHUTTER ADJUSTMENT ............................................................... 13

REGULATOR ADJUSTMENT .......................................................................... 13

BURNER NOZZLE CHECK ............................................................................ 14

THERMOCOUPLE TEST .............................................................................. 15

TEMPERATURE CONTROLLER TEST ................................................................ 15

IGNITION MODULE TEST ............................................................................. 16

PILOT BURNER FLAME ADJUSTMENT ............................................................... 16

SOLENOID VALVE TESTS ............................................................................ 17

ELECTRICAL OPERATION ................................................................................ 18

COMPONENT FUNCTION ............................................................................ 18

SEQUENCE OF OPERATION ......................................................................... 18

24" GRIDDLE - WIRING DIAGRAM .................................................................... 20

36" GRIDDLE - WIRING DIAGRAM .................................................................... 21

48" GRIDDLE - WIRING DIAGRAM .................................................................... 22

60" GRIDDLE - WIRING DIAGRAM .................................................................... 23

TROUBLESHOOTING ..................................................................................... 24

TROUBLESHOOTING ................................................................................. 24

F45514 (0214) Page 2 of 24

RRG SERIES HEAVY DUTY GAS GRIDDLE - GENERAL

GENERAL

INTRODUCTION

This Service Manual covers specific service information related to the models listed on the front cover. Procedures in this manual will apply to all RRG Heavy Duty Gas Griddles unless otherwise specified. Raising of the griddle plate is not required for servicing the griddle components. Griddle components are serviced through the front and rear. Pictures and illustrations can be of any model unless the picture or illustration needs to be model specific.

The RRG, Rapid Recovery Griddle, plate is a composite material which is engineered to provide a high heat transfer rate to the food. The top surface can be scored or dented by careless use of a spatula or scraper. The center of the of the plate is an aluminum core with sheets of stainless steel laminated to the top and bottom exterior surfaces.

INSTALLATION

Generally, installations are made by the dealer or contracted by the dealer or owner. Detailed installation instructions are included in F-36981 Installation & Operation Manual that is sent with each unit.

It should be noted that an improperly installed unit, especially an unlevel unit can lead to premature electrical component failures. A unit that is higher in the front will cause the flue gases to vent improperly and gather in the front near the electrical components.

All RRG models must be installed with an externally mounted regulator.

The models, number of burners and BTU/HR input rating are listed under GENERAL in the Installation & Operation Manual.

OPERATION

Detailed operation instructions are included in the Installation & Operation Manual sent with each unit. The manual is also available online at www.vulcanequipment.com.

The operation of the griddle controls, pilots and burners are outlined under CONTROLS in the Installation & Operation Manual.

SPECIFICATIONS

Electrical

- 120VAC 50/60Hz 1 Amp single phase.

- 6 foot corded plug with ground supplied.

Gas Manifold Pressure:

- Natural Gas 5.0" W.C.

- Propane Gas 10.0" W.C.

- Gas pressure regulator supplied with the unit must be installed.

Incoming Gas Pressure:

- 7" to 9" W.C. Natural Gas

- 11" to 12" W.C. Propane Gas.

- Incoming pressure should not exceed 14.0" W.C. (0.5 PSI) for either gas type.

Burners

- One 27,500 BTU/HR “U” shaped aluminized steel burner for each 12" of griddle width.

Controls

- One Solid State thermostat with embeded thermocouple for each 12" of griddle width.

- Temperature adjustment range 150°F to 450°F.

- Electronic ignition module with pilot safety system.

- There is one pilot for every two burners. A flash tube mounted between two burners is used to light the ignition ports on the burners.

- On 36” and 60” griddles there is an odd number of burners to light. One pilot and one electronic ignition module on these griddles will control a single burner only.

TOOLS

Standard

• Standard set of hand tools.

• VOM and meter leads rated CAT III 600v or higher. Meter must also have a certification.

• Temperature tester (K type thermocouple preferred) with surface probe.

• U-Tube or Digital Manometer.

Page 3 of 24 F45514 (0214)

RRG SERIES HEAVY DUTY GAS GRIDDLE - GENERAL

• Thread sealant suitable for use with natural or propane gas.

Special

• Torque wrench capable of measuring at least 25 in-lbs. for tightening thermocouple probe to griddle plate. Bolt size 5/16"-18.

• Safekote 60 or equivalent Heat Transfer and Anti-Seize Compound rated for 600°F (purchase locally). Apply to thermocouple probe.

• Clear silicone sealant

F45514 (0214) Page 4 of 24

RRG SERIES HEAVY DUTY GAS GRIDDLE - REMOVAL AND REPLACEMENT OF PARTS

REMOVAL AND REPLACEMENT OF PARTS

CONTROL PANEL

Disconnect the

electrical power to the machine and follow lockout / tagout procedures.

The Control Panel holds the thermostats, indicator lights and power switch.

1. Remove four screws securing the front of control panel to frame.

3. Remove all screws from rear of griddle securing the back panel.

Fig. 2

4. Reverse procedure to install.

BULL NOSE

Fig. 1

2. Remove screw(s) that secure the bottom lip of the control panel to the frame. The total number of screws depend on the width of the griddle.

3. Pull control panel forward and lay face down in front of the unit while servicing.

4. Reverse procedure to install.

BACK PANEL

Disconnect the

electrical power to the machine and follow lockout / tagout procedures.

Shut off the gas before servicing the

unit.

NOTE: Remove the back panel when changing a burner, temperature probe or to remove excessive grease build up from the flue area.

Disconnect the

electrical power to the machine and follow lockout / tagout procedures.

1. Remove

2. Remove all screws securing bull nose to griddle. The total number of screws depend on the width of the griddle.

3. Lift bull nose off griddle.

4. Reverse procedure to install.

CONTROL PANEL.

Fig. 3

1. Disconnect gas supply at griddle.

2. Remove GAS PRESSURE REGULATOR.

Page 5 of 24 F45514 (0214)

RRG SERIES HEAVY DUTY GAS GRIDDLE - REMOVAL AND REPLACEMENT OF PARTS

THERMOCOUPLE

Disconnect the

electrical power to the machine and follow lockout / tagout procedures.

Shut off the gas before servicing the

unit.

All gas joints disturbed during

servicing must be checked for leaks. Check with a soap and water solution (bubbles). Do not use an open flame.

Fig. 5

Removal

1. Remove CONTROL PANEL.

2. Note thermocouple connections then disconnect from temperature controller.

Fig. 4

3. Remove BACK PANEL.

4. From rear of griddle, loosen mounting nut and remove probe from bottom of griddle plate.

Installation

1. Apply a thin coating of heat transfer and antiseize compound to the probe tip and mounting nut threads.

2. From rear of griddle, route thermocouple wires and probe through the opening in heat shield.

3. Thread temperature probe into the mounting hole in griddle plate and stop when probe tip touches the plate. Torque the mounting nut to a maximum of 25 in-lbs.

Do not over tighten or damage to the

thermocouple probe may occur. Due to the aluminum plate core, It is also possible to create a raised area over the probe if overtightened.

4. Check TEMPERATURE CONTROL CALIBRATION.

TEMPERATURE CONTROLLER

Disconnect the

electrical power to the machine and follow lockout / tagout procedures.

1. Remove

2. Note wire connections then disconnect them

F45514 (0214) Page 6 of 24

CONTROL PANEL.

from temperature controller.

RRG SERIES HEAVY DUTY GAS GRIDDLE - REMOVAL AND REPLACEMENT OF PARTS

BURNER

Disconnect the

electrical power to the machine and follow lockout / tagout procedures.

Shut off the gas before servicing the

unit.

All gas joints disturbed during

servicing must be checked for leaks. Check with a soap and water solution (bubbles). Do not use an open flame.

1. Remove BACK PANEL.

Fig. 6

3. Remove knob from temperature control shaft.

4. Note temperature control orientation as mounted to control panel. Remove mounting nut from temperature control shaft and remove control from panel.

Fig. 7

2. Remove the nut that is securing burner.

Fig. 8

3. Lift back of burner until locating pin clears hole and pull out burner.

4. Reverse proceedure to install.

PILOT BURNER

5. Reverse procedure to install.

6. Check TEMPERATURE CONTROL CALIBRATION.

Disconnect the

electrical power to the machine and follow lockout / tagout procedures.

Shut off the gas before servicing the

unit.

All gas joints disturbed during

servicing must be checked for leaks. Check with a soap and water solution (bubbles). Do not use an open flame.

1. Remove GAS PRESSURE REGULATOR.

Page 7 of 24 F45514 (0214)

RRG SERIES HEAVY DUTY GAS GRIDDLE - REMOVAL AND REPLACEMENT OF PARTS

2. Access ignition module, and disconnect high voltage spark wire.

Fig. 9

3. Remove CONTROL PANEL.

4. Lift griddle at the front and support it from underneath for access to the pilot. (Be aware of the main gas line at the rear when tilting)

5. Remove pilot bracket retaining screw.

Fig. 11

7. Disconnect flex tubing from pilot burner assembly.

8. Pull high voltage spark wire through bottom of griddle.

Fig. 10

6. Position pilot assembly to give you the easiest access to the compression fitting on the pilot assembly.

9. Reverse procedure to install.

NOTE: When installing, verify spark gap is 1/8".

10. Check for proper operation.

IGNITION MODULE

Disconnect the

electrical power to the machine and follow lockout / tagout procedures.

1. Remove grease tray

2. Remove two screws holding ignition module cover in place and pull it down.

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