Vulcan-Hart GR Series Service Manual Download Page 55 | Manualshive

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6

F35660

Rev. A (0717)

KLEENSCREEN FILTERING SYSTEM

Symptom

Possible Causes

Shortening not filtering, pump motor is on.

1.

Filter screen is plugged.

2.

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. Allow the remaining
shortening in the line to drain into the filter tank to prevent
possible clogging after the shortening cools and solidifies. Close
the filter drawer when complete.

3.

Shortening below 300°F too thick.

4.

R2 fill relay malfunction (N.C. contacts are open).

5.

Fill solenoid valve malfunction.

6.

Interconnecting wiring malfunction.

7.

Pump is inoperative.

Shortening not discarding, pump motor is on.

1.

Filter screen plugged.

2.

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. Allow the remaining
shortening in the line to drain into the filter tank to prevent
possible clogging after the shortening cools and solidifies. Close
the filter drawer when complete.

3.

Shortening below 300°F too thick.

4.

Discard valve switch malfunction (N.O. contacts not closing to
energize R2 relay coil).

5.

R2 fill relay malfunction (contacts remain closed).

NOTE:

The fill solenoid valve should not be energized during

discard operation so that shortening will flow through manual
discard valve only.

6.

Discard valve mechanical malfunction.

7.

Discard hose connection not fully engaged.

8.

Pump is inoperative.

Pump motor is not running to circulate
shortening through filtering system, display is
lit.

1.

Filter key on control panel not pressed or held in long enough
to start pump motor (default is 3 sec.).

2.

R1 pump motor relay malfunction.

3.

Cooking control malfunction.

4.

Interface board malfunction.

5.

Interconnecting wiring malfunction.

6.

Pump motor inoperative.

GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - TROUBLESHOOTING

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Summary of Contents for GR Series

Page 1: ... 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...

Page 2: ...Y TANK ASSEMBLY 21 SERVICE PROCEDURES AND ADJUSTMENTS 23 TEMPERATURE PROBE TEST 23 COOKING CONTROL CALIBRATION 23 ELECTRONIC IGNITION SYSTEM 24 FLAME SENSE CURRENT CHECK 24 ELECTRONIC IGNITION CONTROL TEST 25 GAS MANIFOLD PRESSURE ADJUSTMENT 26 BASKET LIFT ARM ADJUSTMENT 27 SOLID STATE CONTROL 27 COMPUTER CONTROL OLDER CONTROLS 29 COMPUTER CONTROL NEWER CONTROLS 31 ELECTRICAL OPERATION 36 COMPONEN...

Page 3: ...KLEENSCREEN FILTERING SYSTEM 57 GR Series Gas Fryers with NCC Controls formerly Tridelta Built after 3 05 VULCAN 2017 Page 3 of 56 F35660 Rev A 0717 ...

Page 4: ...DATES July 2017 Added COMPUTER CONTROL NEWER CONTROLS Updated TOOLS Updated COMPUTER CONTROL OLDER CONTROLS GR Series Gas Fryers with NCC Controls formerly Tridelta Built after 3 05 SERVICE UPDATES F35660 Rev A 0717 Page 4 of 56 ...

Page 5: ...06 GRD85F ML 126741 Model ML No Model ML No GRC35 ML 052083 GRC35F ML 126733 GRC45 ML 052084 GRC45F ML 126736 GRC65 ML 052085 GRC65F ML 126739 GRC85 ML 052307 GRC85F ML 126742 SINGLE FLOOR MODEL FRYERS Fryers with the Filter Ready option installed use the Mobile filter For service information related to the Mobile filter refer to F24599 MOBILE FILTERS A GRO Frymate dump station can be configured i...

Page 6: ...still utilizes many of the same components as the Vulcan GR series fryers Kleenscreen fryer batteries are available in a minimum of two and a maximum of four fryer sections The fryer size of each section is identical A GRO Frymate dump station can also be included as one or more of the sections Model Designations Fig 2 Models Features and Options Model Features Options Fryer Width inches Shortenin...

Page 7: ...ammed or blink when a timer is activated left or right basket Filter key to start pump motor and begin the filtering process after shortening is drained into filter pan SOLID STATE CONTROL D MODEL Fig 3 Computer with Filter Key Fifteen product programming keys allow individual product cooking times for up to ten different products Product Programming keys 1 through 0 Toggle Filter Left and Right b...

Page 8: ... the filtering system COMPUTER CONTROL OLDER C MODEL Fig 4 COMPUTER CONTROL NEWER C MODEL Fig 5 SPECIFICATIONS Electrical 120 VAC supply A 24 VAC transformer provides power for the fryer controls basket lift controls if installed and the filtering controls on Kleenscreen battery fryers Natural 4 W C Propane 10 W C Binding supply pressure min Natural 5 W C 7 W C battery units Propane 11 W C 12 W C ...

Page 9: ... leads must also be rated at CAT III 600V Clamp on type amp meter with minimum of NFPA 70E CAT III 600V UL CSA TUV listed Temperature tester thermocouple type ESD Electrostatic discharge Protection Kit Special Field service grounding kit P N TL 84919 Loctite 242 P N 520228 or equivalent Burndy pin extraction tool RX2025 GE1 Newark Electronics Catalog Number 16F6666 Used for removing pin terminals ...

Page 10: ...the unit and follow lockout tagout procedures 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 NOTE This procedure applies to fryers with automatic basket lift option only 1 Remove basket assembly lift arms from support rods 2 Remove screws securing upper cover to flue wrap Fig 7 A Lift upper cover over suppor...

Page 11: ... 3 Remove mounting nuts securing solid state control to mounting panel Fig 10 4 Lift the control with mounting panel attached off the front control panel 5 Reverse procedure to install and check for proper operation NOTE If a replacement control was installed program the control with the customer s settings and products DISCARD VALVE SWITCH KLEENSCREEN FRYERS ONLY Disconnect the electrical power t...

Page 12: ... burner shipping ties if installed Fig 13 3 On battery fryer sections only remove drain pipe Fig 14 NOTE On fryers with gas valve arm extension remove cotter pin securing handle to gas valve on off knob adaptor and remove extension arm bracket as necessary for right side burner removal clearance 4 Lift gas burner up and tilt the top of burner toward fryer until it clears the gas orifice at the bot...

Page 13: ...out procedures 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 NOTE If a gas combination valve is malfunctioning do not attempt to disassemble the valve for repair Install a replacement gas combination valve 1 Remove burners as outlined in GAS BURNERS 2 Disconnect lead wires from gas combination valve 3 On fr...

Page 14: ...d during servicing must be checked for leaks Check with a soap and water solution bubbles Do not use an open flame 1 Remove pilot burner assembly and bracket from pilot bracket stand off on the fry tank Fig 18 2 Remove wire tie and disconnect ignitor cable from ignitor flame sense electrode on the gas pilot Fig 19 NOTE When installing replace wire tie to secure ignitor cable 3 Disconnect pilot tub...

Page 15: ...n shortening from fryer tank 2 Disconnect temperature probe and drain valve interlock DVI connector Fig 21 NOTE The connector has six pin positions and is labeled G on the wiring diagram 3 Remove the temperature probe lead wires from the 6 pin female connector Pin No Description G 1 Probe G 2 Empty G 3 Probe G 4 Empty G 5 DVI Switch 24VAC N O IN G 6 DVI Switch 24VAC OUT 4 Remove the burners as out...

Page 16: ...edures CAUTION Do not sharply bend and kink the temperature probe or damage may occur 1 Drain shortening from fryer tank 2 Remove burners as outlined under GAS BURNERS 3 Disconnect lead wires from high limit thermostat 4 Remove screws securing the high limit to mounting bracket Fig 24 5 Remove the capillary tube retaining and packing nuts Fig 25 6 Remove screws securing mounting clips and capillar...

Page 17: ...ll relay 1 Remove burners as outlined under GAS BURNERS 2 Remove wire tie and disconnect ignitor cable from ignitor flame sense electrode on the gas pilot Fig 27 NOTE When installing replace wire tie to secure ignitor cable 3 Remove lower basket lift cover as outlined under COVERS AND PANELS 4 Disconnect all wiring harness connectors and power cords from power supply box 5 Remove screw securing po...

Page 18: ...ND PANELS 5 Disconnect swivel pipe fitting at rear of fry tank 6 Disconnect fill solenoid valve lead wire connector 4 pin from power supply box 7 Remove two screws securing the solenoid valve body flange to pipe tee then remove the assembly from fryer A Remove pipe fittings from solenoid valve and install on replacement valve Fig 32 8 Reverse procedure to install and then check for proper operatio...

Page 19: ...otor to cam bracket then remove motor from bracket 5 Reverse procedure to install and then check for proper operation NOTE After reinstalling motor keep all wire leads clear from moving parts BASKET LIFT CAM SWITCH Disconnect the electrical power to the machine and follow lockout tagout procedures 1 Remove basket lift tube as outlined under BASKET LIFT TUBE 2 Disconnect lead wires from cam switch ...

Page 20: ...onnect the electrical power to the machine and follow lockout tagout procedures 1 Open the fryer section doors above the filter tank drawer 2 Pull out filter drawer remove filter tank assembly and push the tank support arms back into place under the fryer 3 Remove bottom cover from base frame Fig 37 4 Disconnect pump motor lead wire connector 2 pin 5 From underneath the fryer A Disconnect flexible...

Page 21: ...e gas supply line to allow access to fryer from all sides 3 Remove fryer baskets crumb screen and basket hanger NOTE If the fryer is equipped with automatic basket lifts remove lift arms from the support rods before fry tank removal NOTE If the fryer is a battery section remove grease strip and split the silicone seal between the fryer section tanks with utility knife 4 On battery fryer sections o...

Page 22: ... flue and front lip then lift fry tank assembly from the fryer body Place the assembly on floor or table for removal of components 14 Remove gas pilot as outlined under GAS PILOT 15 Remove temperature probe as outlined under TEMPERATURE PROBE 16 Remove high limit thermostat as outlined under HIGH LIMIT THERMOSTAT 17 On battery fryer sections only when removing fry tank from sections with the mecha...

Page 23: ...tance values are within the allowable range the probe is functioning properly Reverse procedure to install B If the measured resistance values are outside the allowable range install a replacement probe and check for proper operation Temperature F Resistance Ω 77 90 000 110 000 350 604 836 4151 302 369 4602 191 233 NOTE 1 High temperature alarm level for the cooking controls 2 Shorted probe equiva...

Page 24: ...ilot ignition is not established within the first several seconds of ignition trial time the cooking control displays a message indicating pilot out or ignition failure as the ignition module continues to generate a spark at the ignitor flame sense electrode If pilot is not established within the 90 second ignition trial time the ignition module locks out power to the gas valve A message is displa...

Page 25: ... B If 24VAC is not present then find the source of the problem 2 Disconnect power to the machine Shut off the gas before servicing the unit and follow lockout tagout procedures 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 3 Verify all electrical connections on the ignition control module are secure 4 Verif...

Page 26: ...er and turn off the gas supply 8 Install a replacement ignition control module and check for proper operation GAS MANIFOLD PRESSURE ADJUSTMENT Disconnect the electrical power to the machine and follow lockout tagout procedures Shut off the gas before servicing the unit and follow lockout tagout procedures 1 Open the door s and turn off the gas combination valve 2 To measure the manifold pressure r...

Page 27: ...ng to reach set temperature 3 Check basket lift operation A If necessary adjust as outlined below 4 When basket is in the up position the bottom of the basket should be out of the shortening When basket is in the down position the bottom of the basket should clear the crumb screen and the product should be submerged A To adjust remove basket arm from lift shaft loosen stop nut and turn height adju...

Page 28: ...ng colon MM SS Set Point Temperature Press Left Basket to increase or Right Basket to decrease set point temperature 2 340F or 171C Current set point with flashing F or C Calibration Offset Press Left Basket to increase or Right Basket to decrease offset temperature range 20 to 20 2 00F or 00F Always in F Melt Options Press Left Basket or Right Basket to scroll through Melt Options CY S CY L Liqui...

Page 29: ...s Display8 ON OFF Left Right Temperature Offset Press 1 to view offset temperature To edit enter the desired offset temperature range 0 to 20 F Press V to accept selection all OFF 00 F DEGREES Press Toggle key to select the direction of the temperature offset positive or negative POSITIVE OR NEGATIVE DEGREES Melt Cycle On Off Times Press 2 and set melt cycle on time all MLTON 02 MELT ON Press Left...

Page 30: ... to More Service Programming 4 5 6 7 8 MORE SERVICE Press 4 to view or edit the Shake Alarm duration 0 98 seconds 99 continuous alarm until canceled manually DT DUR05 DURATION Press 5 to view or edit the Hold Alarm duration 0 98 seconds 99 continuous alarm until canceled manually HD DUR 05 DURATION Press 6 to view of edit the Cooking cycle cancel delay 0 10 seconds 4 CANCEL 01 DELAY Press 7 to vie...

Page 31: ...ng type and energy source 8 Default value shown in bold Display LED and Keypad Test 1 Press and hold the 5 key while turning on power to initiate test Release the 5 key during display of software revision level and all LED lamps and display segments should light 2 For each number key 1 9 0 pressed the corresponding value is displayed in each character position on the left and right displays i e 5 ...

Page 32: ... selection will be blinking C Press PROGRAM key to save the selection Blinking stops D Access the other service settings as necessary 4 To enter DIAGNOSTICS mode press product number key 7 on the control panel Fig 53 Fig 54 A Press the desired product number key 1 2 3 4 6 on the control panel that corresponds to the diagnostic test number on the display screen to check the output signal to the com...

Page 33: ...RIPTION 1 Brand Press 1 to change brand name Press toggle key to select HOBART or VULCAN Press PROGRAM Key to save the selection VULCAN Brand name at power on 2 Celsius Press 2 to change temperature scale Press toggle key to select NO or YES Press PROGRAM Key to save the selection NO Temperature F C No Fahrenheit Yes Celsius 3 Mode Press 3 to change fryer mode Press toggle key to select BOIL or FI...

Page 34: ...main off ___ DIAGNOSTICS shown on display screen 1 L Basket Press 1 to toggle left basket lift output to lower the lift DOWN Lowers basket Press 1 again to raise the lift UP Raises basket 2 R Basket Press 2 to toggle right basket lift output to lower the lift DOWN Lowers basket Press 2 again to raise the lift UP Raises basket 3 Heater Press 3 to turn heat output ON for 3 seconds only OIL TEMPERATU...

Page 35: ... PROBE FAULT If a temperature probe fault occurs the alarm sounds continuously and the display shows PROBE on the left display and either OPEN or SHORT on the right display This alarm state will remain until the fault clears or power switch is cycled OPEN Probe detects temperature less than 40 F SHORTED Probe detects temperature greater than 460 F IGNITION STATUS GAS Selected under service setting...

Page 36: ...ing control The probe is an RTD resistance temperature detector of the Thermistor type As temperature increases the resistance value decreases Ignition Control Module Controls and monitors gas pilot ignition Energizes pilot valve coil on the combination control valve and generates spark for pilot ignition Monitors the presence of a flame and supplies an ignition status input signal to the cooking ...

Page 37: ...to the fill solenoid valve to open the valve and allow shortening to flow through filter system COMPONENT LOCATION Fig 56 Fig 57 Fig 58 POWER SUPPLY BOX GR Series Gas Fryers with NCC Controls formerly Tridelta Built after 3 05 ELECTRICAL OPERATION Page 37 of 56 F35660 Rev A 0717 ...

Page 38: ... control should be programmed to use the melt cycle In the melt cycle the control will cycle the heat on off in short intervals This will gradually heat and liquify the shortening until it reaches 135 F Melt cycle default times in seconds are GR Series Gas Fryers with NCC Controls formerly Tridelta Built after 3 05 ELECTRICAL OPERATION F35660 Rev A 0717 Page 38 of 56 ...

Page 39: ...cooking control at pin E1 6 B If pilot ignition is not established within the first several seconds of ignition trial time the cooking control display indicates pilot out as the ignition module continues to generate a spark at ignitor C If pilot is not established within 90 seconds of the ignition module being energized the ignition module locks out power to gas valve Cooking control display indic...

Page 40: ...aximum NOTE Shortening should not be filtered outside of this temperature range At lower temperatures the shortening is thicker which may increase filtering time and place a greater load on the pump At higher shortening temperatures oil seal life is decreased E Filter drawer assembly installed properly F Discard valve handle white retracted 1 Discard valve switch N O contacts open Mechanical disca...

Page 41: ...ring cycle is complete and fryer resumes normal operation NOTE If using solid shortening when all filtered shortening is returned to the fry tank and pump motor is off open the filter drawer approximately 1 inch Allow the remaining shortening in the line to drain into the filter tank to prevent possible clogging after the shortening cools and solidifies Close the filter drawer when complete GR Ser...

Page 42: ...CHEMATIC DIAGRAMS Electronic Ignition Solid State or Computer Control GR Series Gas Fryers with NCC Controls formerly Tridelta Built after 3 05 ELECTRICAL OPERATION F35660 Rev A 0717 Page 42 of 56 Fig 60 ...

Page 43: ...GR Series Gas Fryers with NCC Controls formerly Tridelta Built after 3 05 ELECTRICAL OPERATION Page 43 of 56 F35660 Rev A 0717 Manual Ignition Solid State or Computer Control Fig 61 ...

Page 44: ...GR Series Gas Fryers with NCC Controls formerly Tridelta Built after 3 05 ELECTRICAL OPERATION F35660 Rev A 0717 Page 44 of 56 WIRING DIAGRAMS Electronic Ignition Solid State or Computer Control Fig 62 ...

Page 45: ...GR Series Gas Fryers with NCC Controls formerly Tridelta Built after 3 05 ELECTRICAL OPERATION Page 45 of 56 F35660 Rev A 0717 Electronic Ignition Solid State or Computer Control cont d Fig 63 ...

Page 46: ...GR Series Gas Fryers with NCC Controls formerly Tridelta Built after 3 05 ELECTRICAL OPERATION F35660 Rev A 0717 Page 46 of 56 Manual Ignition Solid State or Computer Control Fig 64 ...

Page 47: ...GR Series Gas Fryers with NCC Controls formerly Tridelta Built after 3 05 ELECTRICAL OPERATION Page 47 of 56 F35660 Rev A 0717 Manual Ignition Solid State or Computer Control cont d Fig 65 ...

Page 48: ...GR Series Gas Fryers with NCC Controls formerly Tridelta Built after 3 05 ELECTRICAL OPERATION F35660 Rev A 0717 Page 48 of 56 Filtering System Fryers Fig 66 ...

Page 49: ...GR Series Gas Fryers with NCC Controls formerly Tridelta Built after 3 05 ELECTRICAL OPERATION Page 49 of 56 F35660 Rev A 0717 Filtering System Fryers cont d Fig 67 ...

Page 50: ...GR Series Gas Fryers with NCC Controls formerly Tridelta Built after 3 05 ELECTRICAL OPERATION F35660 Rev A 0717 Page 50 of 56 Frymate Dump Station Fig 68 ...

Page 51: ...lfunction Gas pilot ignites but will not maintain flame 1 Ignitor lead connections malfunction 2 Ignitor ground inoperative 3 Ignitor flame sense misaligned or malfunction 4 Insufficient gas pressure 5 Incorrect polarity from transformer to Ignition Module Gas burners ignite but will not maintain flame 1 Gas pressure incorrect 2 Gas orifice obstructed or incorrect 3 Burner malfunction 4 Gas pilot ...

Page 52: ...tronic alarm will sound continuously NOTE A temperature of less than 40 F is an open probe equivalent Shorted Probe If a shorted probe is detected the heat demand heat on and basket lift outputs are disabled Any cooking in progress is canceled and all operator buttons are disabled The display shows HI and the electronic alarm will sound continuously NOTE A temperature of 460 F or greater is a shor...

Page 53: ...E A temperature of 460 F or greater is a shorted probe equivalent Hi Temperature If the temperature is greater than or equal to 415 F the heat demand heat on is disabled Any cooking in progress is canceled and all operator buttons are disabled The display shows HIGH TMP and the electronic alarm will sound continuously Normal fryer operation resumes when the temperature drops below the high tempera...

Page 54: ... No Input Pin No Output P1 24VDC Left Basket Lift P6 Heat Demand Triac 24VAC 2 P2 24VDC Right Basket Lift P7 System Ground P3 24VDC Heat Demand Control P8 24VAC Left Basket Lift3 P4 Common Control P9 24VAC Right Basket Lift3 P5 Heat Demand Triac 24VAC P12 24VAC R1 pump motor relay P10 Relay Contacts 24VAC 1 P11 24VAC K3 Filter Relay NOTES 1 Relays connected internally 2 To M1 terminal on gas valve...

Page 55: ...r power switch is off open the filter drawer approximately 1 inch Allow the remaining shortening in the line to drain into the filter tank to prevent possible clogging after the shortening cools and solidifies Close the filter drawer when complete 3 Shortening below 300 F too thick 4 Discard valve switch malfunction N O contacts not closing to energize R2 relay coil 5 R2 fill relay malfunction con...

Page 56: ...ot pressed or held in long enough to start pump motor default is 3 sec 2 Discard handle white not extended 3 R1 pump motor relay malfunction 4 Cooking control malfunction 5 Interface board malfunction 6 Interconnecting wiring malfunction 7 Pump motor inoperative GR Series Gas Fryers with NCC Controls formerly Tridelta Built after 3 05 TROUBLESHOOTING ...

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