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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
SERVICE MANUAL
GR Series Gas Fryers with NCC
Controls (formerly Tridelta / Built
after 3/05)
Use this manual for Fryers built after March 2005. Use
Service Manual F25114 (8/02) for Fryers built prior to
March 2005.
GR Series
- NOTICE -
3600 North Point Blvd Baltimore, MD 21222
F35660 Rev. A (0717)
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Table of Contents
Related Manuals for Vulcan-Hart GR Series
Summary of Contents for Vulcan-Hart GR Series
- Page 1 SERVICE MANUAL GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) Use this manual for Fryers built after March 2005. Use Service Manual F25114 (8/02) for Fryers built prior to March 2005. GR Series - NOTICE -...
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Page 2: Table Of Contents
GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) TABLE OF CONTENTS SERVICE UPDATES ..................4 SERVICE UPDATES . - Page 3 GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) KLEENSCREEN FILTERING SYSTEM ..............57 ©...
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Page 4: Service Updates
GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - SERVICE UPDATES SERVICE UPDATES SERVICE UPDATES July 2017 • Added COMPUTER CONTROL - NEWER CONTROLS. • Updated TOOLS. • Updated COMPUTER CONTROL - OLDER CONTROLS. F35660 Rev. A (0717) -
Page 5: General
GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - GENERAL GENERAL Model ML No. Model ML No. INTRODUCTION GRC35 ML-052083 GRC35F ML-126733 This Service Manual covers specific service GRC45 ML-052084 GRC45F ML-126736 information related to the models listed on the front... -
Page 6: Kleenscreen Filtering System
GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - GENERAL Features Options Shortening Model Fryer Width Cooking Cook Timer Automatic Capacity Fry Tank (inches) Control (MM:SS) Basket Lifts (pounds) GRO15 (Frymate) 15½ GRO21 (Frymate) GRO21S (Frymate) - Page 7 GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - GENERAL Features Options Fryer Shortening Filter Pan Model Cooking Cook Timer Automatic Width Capacity Capacity Tank Control (MM:SS) Basket Lifts (inches) (pounds) (pounds) GRO15 (Frymate) 15½...
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Page 8: Specifications
GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - GENERAL • Left and Right displays that indicate actual or set • Filter Key - Starts pump motor to circulate point temperature, remaining times, operating shortening through the filtering system. -
Page 9: Tools
GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - GENERAL No. of BTU/HR/ GR Series Tubes Section GRD35, GRC35, 90,000 GRD35F, GRC35F GRD45, GRC45, 120,000 GRD45F, GRC45F GRD65, GRC65, 150,000 GRD65F, GRC65F GRD85, GRC85, 150,000... -
Page 10: Removal And Replacement Of Parts
GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - REMOVAL AND REPLACEMENT OF PARTS REMOVAL AND REPLACEMENT OF PARTS COVERS AND PANELS Disconnect the electrical power to the machine and follow lockout / tagout procedures. -
Page 11: Cooking Controls
GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - REMOVAL AND REPLACEMENT OF PARTS COOKING CONTROLS Disconnect the electrical power to the machine and follow lockout / tagout procedures. CAUTION Certain components in this system are subject to damage by electrostatic discharge during field repairs. -
Page 12: Gas Burners
GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - REMOVAL AND REPLACEMENT OF PARTS From underneath the fryer: Disconnect the discard valve switch lead wire connector from power supply box. Remove switch mounting screws. Fig. 13 On battery fryer sections only, remove drain pipe. -
Page 13: Gas Orifice
GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - REMOVAL AND REPLACEMENT OF PARTS Fig. 16 Reverse procedure to install. GAS COMBINATION VALVE Disconnect the electrical power to the machine and follow lockout / tagout procedures. -
Page 14: Gas Pilot
GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - REMOVAL AND REPLACEMENT OF PARTS Remove gas line fittings from gas combination valve, and install (in same orientation) on the replacement valve. Fig. 18 Remove wire tie, and disconnect ignitor cable from ignitor/flame sense electrode on the gas pilot. -
Page 15: Temperature Probe
GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - REMOVAL AND REPLACEMENT OF PARTS CAUTION NOTE: The connector has six pin positions, and is If orifice is clogged with debris, clean with labeled G on the wiring diagram. -
Page 16: High Limit Thermostat
GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - REMOVAL AND REPLACEMENT OF PARTS Remove screws securing probe mounting clips and probe to the fryer heat tube (inside tank), then remove probe. Fig. 23 Reverse procedure to install. -
Page 17: Power Supply Box Components
GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - REMOVAL AND REPLACEMENT OF PARTS Fig. 26 Reverse procedure to install. POWER SUPPLY BOX COMPONENTS Fig. 27 NOTE: When installing, replace wire tie to secure ignitor cable. -
Page 18: Fill Solenoid Valve (Kleenscreen Fryers Only)
GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - REMOVAL AND REPLACEMENT OF PARTS Disconnect lead wires from the component being Remove lower basket lift cover as outlined under replaced, then remove from power supply box. -
Page 19: Basket Lift Motor
GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - REMOVAL AND REPLACEMENT OF PARTS Fig. 34 Remove screws securing basket lift motor to cam bracket, then remove motor from bracket. Reverse procedure to install, and then check for proper operation. -
Page 20: Basket Lift Cam
GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - REMOVAL AND REPLACEMENT OF PARTS Fig. 36 Reverse procedure to install. PUMP AND MOTOR (KLEENSCREEN FRYERS ONLY) Disconnect the electrical power to the machine and follow lockout / tagout procedures. -
Page 21: Fry Tank Assembly
GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - REMOVAL AND REPLACEMENT OF PARTS NOTE: If the fryer is a battery section, remove grease strip, and split the silicone seal between the fryer section tanks with utility knife. - Page 22 GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - REMOVAL AND REPLACEMENT OF PARTS Remove gas manifold and frame assembly from 16. Remove high limit thermostat as outlined under the fryer's base frame: HIGH LIMIT THERMOSTAT.
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Page 23: Service Procedures And Adjustments
GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - SERVICE PROCEDURES AND ADJUSTMENTS SERVICE PROCEDURES AND ADJUSTMENTS If the measured resistance values are within TEMPERATURE PROBE TEST the allowable range, the probe is functioning properly. Reverse procedure to install. -
Page 24: Electronic Ignition System
GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - SERVICE PROCEDURES AND ADJUSTMENTS Record meter reading from thermocouple failure as the ignition module continues to generate a when the cooking control cycles off and on spark at the ignitor/flame sense electrode. -
Page 25: Electronic Ignition Control Test
GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - SERVICE PROCEDURES AND ADJUSTMENTS Access the ignition control module in the power Disconnect power to the machine. supply box. Remove the jumper wire between terminals Shut off the gas marked with an asterisk (*) and an 8. -
Page 26: Gas Manifold Pressure Adjustment
GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - SERVICE PROCEDURES AND ADJUSTMENTS If ignitor is still not sparking, turn off the power switch, disconnect power, and turn off the gas supply. Install a replacement ignition control module, and check for proper operation. -
Page 27: Basket Lift Arm Adjustment
GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - SERVICE PROCEDURES AND ADJUSTMENTS Check basket lift operation. If necessary, adjust as outlined below When basket is in the up position, the bottom of the basket should be out of the shortening. When... - Page 28 GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - SERVICE PROCEDURES AND ADJUSTMENTS Press V key to enter Program Mode. NOTE: If the proper key sequence is not entered within 6 seconds, the controller exits Program Mode.
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Page 29: Computer Control - Older Controls
GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - SERVICE PROCEDURES AND ADJUSTMENTS Enter Service Mode COMPUTER CONTROL - OLDER Press V key, and enter password (default: 1972). CONTROLS Use product key numbers (1 though 0) to enter values. - Page 30 GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - SERVICE PROCEDURES AND ADJUSTMENTS LED Status Display Program Item Key Sequence Left Right • Press and hold 6 to light all display *.*.*.*.*.*.*·*·* *.*.*.*.*.*.*·*·* elements. •...
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Page 31: Computer Control - Newer Controls
GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - SERVICE PROCEDURES AND ADJUSTMENTS LED Status Display Program Item Key Sequence Left Right Oil Temp LED lamps cycle on/off with heat. "PILOT ON" indicates gas valve is on and computer is receiving input status signal from valve. - Page 32 GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - SERVICE PROCEDURES AND ADJUSTMENTS Access the other service settings as necessary. To enter DIAGNOSTICS mode, press product number key 7 on the control panel. Fig. 53 Fig.
- Page 33 GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - SERVICE PROCEDURES AND ADJUSTMENTS CONTRAST - Press the L key on the keypad to lower the contrast or press the R key on the keypad to raise the contrast.
- Page 34 GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - SERVICE PROCEDURES AND ADJUSTMENTS DISPLAY SERVICE ITEM KEY SEQUENCE DESCRIPTION SETTINGS FLASHES Press 5 to change offset temperature. Press toggle key to change offset value to (+) or (-) (positive or negative).
- Page 35 GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - SERVICE PROCEDURES AND ADJUSTMENTS DISPLAY SERVICE ITEM KEY SEQUENCE DESCRIPTION SETTINGS FLASHES Press 6 to adjust the left and right display screen settings. Refer to LCD display screen picture under ENTER SERVICE SETTINGS MODE.
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Page 36: Electrical Operation
GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - ELECTRICAL OPERATION ELECTRICAL OPERATION COMPONENT FUNCTION FRYER CONTROLS Solid State or Monitors and evaluates input signals to the control: activates heat output signal to Computer Cooking maintain shortening temperature;... -
Page 37: Component Location
GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - ELECTRICAL OPERATION R2 Fill Relay ..When 24VAC relay coil is energized by filter key, supplies 24VAC to the fill solenoid valve, to open the valve, and allow shortening to flow through filter system. -
Page 38: Sequence Of Operation
GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - ELECTRICAL OPERATION Fig. 59 NOTE: If using solid shortening, the control should be SEQUENCE OF OPERATION programmed to use the melt cycle. In the melt cycle, the control will cycle the heat on/off in short intervals. - Page 39 GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - ELECTRICAL OPERATION Main voltage (MV) N.O. contacts close • Liquid L = 16 on, 18 off. and provide ignition status input signal • Solid (24VAC) to cooking control at pin E1-6 S = 8 on, 26 off (default for gas).
- Page 40 GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - ELECTRICAL OPERATION Cooking control cycles heat output on shortening shortening is thicker, which may increase filtering time temperature until: power switch is turned off; and place a greater load on the pump. At higher ignition input status is removed;...
- Page 41 GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - ELECTRICAL OPERATION When all filtered shortening is returned to the fry NOTE: If using solid shortening, when all filtered tank, press filter key on the control panel.
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Page 42: Schematic Diagrams
GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - ELECTRICAL OPERATION SCHEMATIC DIAGRAMS Electronic Ignition, Solid State or Computer Control Fig. 60 F35660 Rev. A (0717) Page 42 of 56... - Page 43 GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - ELECTRICAL OPERATION Manual Ignition, Solid State or Computer Control Fig. 61 Page 43 of 56 F35660 Rev. A (0717)
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Page 44: Wiring Diagrams
GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - ELECTRICAL OPERATION WIRING DIAGRAMS Electronic Ignition, Solid State or Computer Control Fig. 62 F35660 Rev. A (0717) Page 44 of 56... - Page 45 GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - ELECTRICAL OPERATION Electronic Ignition, Solid State or Computer Control (cont'd) Fig. 63 F35660 Rev. A (0717) Page 45 of 56...
- Page 46 GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - ELECTRICAL OPERATION Manual Ignition, Solid State or Computer Control Fig. 64 F35660 Rev. A (0717) Page 46 of 56...
- Page 47 GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - ELECTRICAL OPERATION Manual Ignition, Solid State or Computer Control (cont'd) Fig. 65 F35660 Rev. A (0717) Page 47 of 56...
- Page 48 GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - ELECTRICAL OPERATION Filtering System Fryers Fig. 66 F35660 Rev. A (0717) Page 48 of 56...
- Page 49 GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - ELECTRICAL OPERATION Filtering System Fryers (cont'd) Fig. 67 F35660 Rev. A (0717) Page 49 of 56...
- Page 50 GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - ELECTRICAL OPERATION Frymate (Dump Station) Fig. 68 F35660 Rev. A (0717) Page 50 of 56...
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Page 51: Troubleshooting
GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - TROUBLESHOOTING TROUBLESHOOTING ALL MODELS Symptoms Possible Causes Drain valve switch open (alarm message displayed), or switch malfunction. Shorted electrode, or an improper ground on ignitor/flame sense. - Page 52 GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - TROUBLESHOOTING Symptoms Possible Causes Power switch off or malfunction. Main circuit breaker off. No power to cooking control (display not lit), fryer does not heat. Transformer inoperative.
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Page 53: Computer Control
GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - TROUBLESHOOTING Alarms Description When drain valve is opened, the DVI switch contacts open, and the 24VAC input to the controller is removed. The heat demand (heat on) and basket lift outputs are disabled. Any cooking in progress is canceled, and all operator buttons are disabled. -
Page 54: Solid State Control
GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - TROUBLESHOOTING SOLID STATE OR COMPUTER CONTROL HARNESS PIN-OUTS Pin No. Pin No. Input Output E1-1 24VAC Hot E1-8 24VDC (+) Heat Demand E1-2 E1-9 24VDC (+) Filter... - Page 55 GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - TROUBLESHOOTING KLEENSCREEN FILTERING SYSTEM Symptom Possible Causes Filter screen is plugged. Clog in filter system lines. NOTE: If using solid shortening, when all filtered shortening is returned to the fry tank and filter power switch is off, open the filter drawer approximately 1 inch.
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Page 56: Interface Control Board Pin-Outs
GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - TROUBLESHOOTING Symptom Possible Causes Filter key on control panel not pressed or held in long enough to start pump motor (default is 3 sec.). Discard handle (white) not extended.