Instruction/ maintenance manual of the product 24RRG Vulcan-Hart
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ITW Food Equipment Group, LLC 3600 North Point Blvd. Baltimore, MD 21222 FORM F-36986 (Rev . 11-0 8) SERVICE MANUAL Heavy Duty Gas Griddles MODEL MLS 24RRG ML-135339-00024 36RRG ML-135340-00036 48RRG ML-135341-00048 60RRG ML-135342-00060 www.vulcanhart.
- 2 - TABLE OF CONTENTS INSTALLATION………………… …………………………… ………….. OPERATION……………………… ………………………… …………... CLEANING……………………… …………………………… ………….
- 3 - BURNER…………………………… …………………………………….. BURNER TROUBLESHOOTING …………… …………………………. BURNER REMOVAL ………………………… …………………………. BURNER ADJUSTMENT …………………………………… ………….
- 4 - GENERAL INTRODUCTION This manual is prepared for the use of trained service technicians and should only be used by those who are properly qualified.
- 5 - COMPONENT LOCATION TEMPERATURE CONTROLLER 498438 SAFETY IGNITION MODULE 498443 DUAL SOLENOID VA LVE 713656 GAS MANIFOLD 720122 PILOT SPARK ASSEMBLY 713930 INDICATOR LIGHT 720017 POWER SWITCH 810.
- 6 - EXTERIOR PANELS CONTROL PANEL Disconnect the electrical power and follow lockout / tagout procedures The Control Panel holds the thermostats, indicator lights and power switch. REMOVAL 1. Remove the four screws securing the front of the control panel.
- 7 - THERMOSTAT The thermostat is a solid state control. The thermostat supplies power to the burner solenoid valves and indicator lights when turned on or until the temperature setpoint is r eached. Disconnect the electrical power and follow lockout / tagout procedures THERMOSTAT TROUBLESHOOTING SYMPTOM – BURNER WILL NOT COME ON 1.
- 8 - Disconnect the electrical power and follow lockout/tagout procedures THERMOSTAT REMOVAL 1. Remove the control panel 2. Remove the knob 3. Label and disconnect the wires 4. Remove the thermostat retaining nut on the knob shaft. 5. Reverse procedure to install while being careful to install the thermostat in the same orientation.
- 9 - ADJUSTMENTS CALIBRATION 1. Each temperature controller c ontrols a 12” zone of the gri ddle. Using a Surface Probe temperature measurement device, observe the temperatur es at the cente r points of t he cooking zone s.
- 10 - POWER ON/OFF SWITCH The Power Switch controls the power supply to all other electronic com ponents. Disconnect the electrical power and follow lockout / tagout procedures POWER SWITCH TROUBL ESHOOTING SYMPTOM – NO POWER BEING SUPPLIE D TO THE UNIT 1.
- 11 - INDICATOR LIGHT The indicator light illuminates fully to indicate that the corresponding ther mostat and burner have turned on and gas is flowing through the corresponding solenoid valve.
- 12 - Disconnect the electrical power and follow lockout / tagout procedures SAFETY IGNITION MODULE TROUBLES HOOTING SYMPTOM – NO SPARK BETWEEN PILOT HEAD AND EL ECTRODE 1. Check for loose or greasy/dirty connections at all terminals (including electrode wire) 2.
- 13 - Disconnect the electrical power and follow lockout / tagout procedures SOLENOID VALVE TROUBLESHOOTI NG SYMPTOM – NO GAS FLOW TO BURNER 1. Check terminals for loose or greasy/dirty connections 2. Check gas pressure – check for orifice obstructio ns.
- 14 - PILOT The RRG Series Griddles utilize a solenoid valve with a brass pilot valve to control gas flow to pilot burners. One to three pilot flames can be fed by one valve – one leg of which may be branched. PILOT TROUBLESHOOTING SYMPTOM – PILOT WILL NOT LIGHT 1.
- 15 - HELPFUL HINT – If the unit is attached to a flexible gas line, you can extend the bullet feet out t o their fullest extension to raise the griddle and allow yourself more clearance while reaching under the unit. Remember to relevel the unit if you chose to do this.
- 16 - 2. Reach through the back of the unit. Squeeze the burner retaining clip and slide off burner retaining pin. 3. Lift the burner up so the retaining pin clears the corresponding hole in th e chassis, then pull the burner out through the back of the unit.
- 17 - GAS REGULATOR REGULATOR INSTALLED IN A HORI ZONTAL, UPRIGHT POSITION The RRG series units must have an exterior machine gas regulator installed. The units are shipped with a regulator that has a vent limiter. These regulators must be installed as close as possible to the unit in a horizontal, upright position for optimal performance.
- 18 - 12. Turn power switch and gas supply back on. All gas joints disturbed during ser vicing must be checked for leaks. Check with a soap and w ater soluti on. Do not use an open flame. PRESSURE TAP AT #1 BURNER SEQUENCE OF OPERATION Operation is the same for all size griddles.
- 19 - WIRING DIAGRAMS WIRING DIAGRAM – 24-INCH GRIDDLE.
- 20 - WIRING DIAGRAM – 36-INCH GRIDDLE.
- 21 - WIRING DIAGRAM – 48-INCH GRIDDLE.
- 22 - WIRING DIAGRAM – 60-INCH GRIDDLE.
An important point after buying a device Vulcan-Hart 24RRG (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Vulcan-Hart 24RRG yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Vulcan-Hart 24RRG - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Vulcan-Hart 24RRG you will learn all the available features of the product, as well as information on its operation. The information that you get Vulcan-Hart 24RRG will certainly help you make a decision on the purchase.
If you already are a holder of Vulcan-Hart 24RRG, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Vulcan-Hart 24RRG.
However, one of the most important roles played by the user manual is to help in solving problems with Vulcan-Hart 24RRG. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Vulcan-Hart 24RRG along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
