Vulcan 1GR85M Service Manual

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 -

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

F35660 Rev. A (0717)

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

TABLE OF CONTENTS

SERVICE UPDATES ....................................................................................... 4

SERVICE UPDATES ................................................................................... 4

GENERAL .................................................................................................. 5

INTRODUCTION ....................................................................................... 5

MODEL AND ML NUMBERS ............................................................................ 5

SINGLE FLOOR MODEL FRYERS ...................................................................... 5

KLEENSCREEN FILTERING SYSTEM .................................................................. 6

SPECIFICATIONS ...................................................................................... 8

TOOLS ................................................................................................. 9

REMOVAL AND REPLACEMENT OF PARTS .............................................................. 10

COVERS AND PANELS ............................................................................... 10

COOKING CONTROLS ............................................................................... 11

DISCARD VALVE SWITCH (KLEENSCREEN FRYERS ONLY) ......................................... 11

GAS BURNERS ....................................................................................... 12

GAS ORIFICE ......................................................................................... 13

GAS COMBINATION VALVE .......................................................................... 13

GAS PILOT ........................................................................................... 14

TEMPERATURE PROBE .............................................................................. 15

HIGH LIMIT THERMOSTAT ........................................................................... 16

POWER SUPPLY BOX COMPONENTS ............................................................... 17

FILL SOLENOID VALVE (KLEENSCREEN FRYERS ONLY)

BASKET LIFT TUBE .................................................................................. 18

BASKET LIFT MOTOR ................................................................................ 19

BASKET LIFT CAM SWITCH .......................................................................... 19

BASKET LIFT CAM ................................................................................... 20

PUMP AND MOTOR (KLEENSCREEN FRYERS ONLY) ............................................... 20

FRY TANK ASSEMBLY ............................................................................... 21

............................................ 18

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

COMPONENT FUNCTION ............................................................................ 36

COMPONENT LOCATION ............................................................................. 37

POWER SUPPLY BOX ................................................................................ 37

SEQUENCE OF OPERATION ......................................................................... 38

SCHEMATIC DIAGRAMS ............................................................................. 42

WIRING DIAGRAMS .................................................................................. 45

TROUBLESHOOTING ..................................................................................... 53

ALL MODELS ......................................................................................... 53

SOLID STATE CONTROL ............................................................................. 54

COMPUTER CONTROL ............................................................................... 55

SOLID STATE OR COMPUTER CONTROL HARNESS PIN-OUTS ..................................... 56

INTERFACE CONTROL BOARD PIN-OUTS ........................................................... 56

FRYMATE (DUMP STATION) WITH OPTIONAL HEATER .............................................. 56

F35660 Rev. A (0717) Page 2 of 56

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

KLEENSCREEN FILTERING SYSTEM ................................................................ 57

Page 3 of 56 F35660 Rev. A (0717)

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

SERVICE UPDATES

July 2017

• Added COMPUTER CONTROL - NEWER CONTROLS.

• Updated TOOLS.

• Updated COMPUTER CONTROL - OLDER CONTROLS.

F35660 Rev. A (0717) Page 4 of 56

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

GENERAL

INTRODUCTION

This Service Manual covers specific service information related to the models listed on the front cover. Starting in March, 2005, production model fryers are built using control from National Controls Corporation NCC (formerly Tridelta Industries TDI). The features and operation of the cooking controls for both single floor model fryers and Kleenscreen battery fryers include fryer energy selection (gas or electric) and number of basket lifts selection.

However, some of the features and operation of the cooking controls for Kleenscreen battery fryers have changed and now include:

• Filter key on the control panel to start a filtering cycle (replaces boil key).

• Fill solenoid valve to allow flow of shortening through filtering system (replaces mechanical valve and filter handle).

a solid state control and computer

MODEL AND ML NUMBERS

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 in a battery with fryers

Model Designations

15½ inches or 21 inches in width.

Model ML No. Model ML No.

GRD35 ML-052080 GRD35F ML-126732

GRD45 ML-052081 GRD45F ML-126735

GRD65 ML-052082 GRD65F ML-126738

GRD85 ML-052306 GRD85F ML-126741

Models, Features and Options

Model

GRD35 15½ 35-40 Full Solid State 0-99:59 Single or Dual

GRD45 15½ 45-50 Full Solid State 0-99:59 Single or Dual

GRD65 21 65-75 Full Solid State 0-99:59 Single or Dual

GRD85 21 85-90 Full Solid State 0-99:59 Single or Dual

GRC35 15½ 35-40 Full Computer 0-99:59 Single or Dual

GRC45 15½ 45-50 Full Computer 0-99:59 Single or Dual

GRC65 21 65-75 Full Computer 0-99:59 Single or Dual

GRC85 21 85-90 Full Computer 0-99:59 Single or Dual

Fryer Width

(inches)

Shortening

Capacity (pounds)

Fig. 1

Features Options

Fry Tank

Cooking

Control

Cook Timer

(MM:SS)

Automatic

Basket Lifts

Page 5 of 56 F35660 Rev. A (0717)

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

Model

Fryer Width

(inches)

GRO15 (Frymate) 15½

GRO21 (Frymate) 21

GRO21S (Frymate) 21

Shortening

Capacity (pounds)

Features Options

Fry Tank

Cooking

Control

Cook Timer

(MM:SS)

Automatic

Basket Lifts

KLEENSCREEN FILTERING

SYSTEM

The Kleenscreen filtering system is integrated into the GR Series fryer battery. The filter is housed in a pullout drawer assembly at the base of the fryer. The filtering components in steel filter tank, crumb-catch basket and a dual element mesh filter screen. With the filter drawer closed, a self-seating oil return line provides the path to return the filtered shortening to the fry tank.

This system is designed to provide a thorough and easy method to filter the shortening.

Some of the benefits include:

• Self-contained system eliminating the use of external filter equipment.

• Paperless filtering system.

• Easy to clean and low maintenance.

The fryer battery still utilizes many of the same components as the Vulcan GR series fryers.

the drawer include a stainless

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

Features Options

Model

2GRD35F

2GRD45F

2GRD65F

2GRD85F

2GRC35F

2GRC45F

2GRC65F

2GRC85F

Fryer

Width

(inches)

31 35-40 80 Full Solid State 0-99:59 Single or Dual

31 45-50 80 Full Solid State 0-99:59 Single or Dual

42 65-75 130 Full Solid State 0-99:59 Single or Dual

42 85-90 130 Full Solid State 0-99:59 Single or Dual

31 35-40 80 Full Computer 0-99:59 Single or Dual

31 45-50 80 Full Computer 0-99:59 Single or Dual

42 65-75 130 Full Computer 0-99:59 Single or Dual

42 85-90 130 Full Computer 0-99:59 Single or Dual

Shortening

Capacity (pounds)

Filter Pan

Capacity (pounds)

F35660 Rev. A (0717) Page 6 of 56

Fry

Tank

Cooking

Control

Cook Timer

(MM:SS)

Automatic

Basket Lifts

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

Model

Fryer

Width

(inches)

GRO15 (Frymate) 15½

GRO21 (Frymate) 21

GRO21S (Frymate) 21

NOTES:

For each additional fryer section, add 15½ inches to the width.

For each additional fryer section, add 21 inches to the width.

CONTROL PANELS

Solid State with Filter Key

Shortening

Capacity (pounds)

Features Options

Filter Pan

Capacity (pounds)

Fry

Tank

Cooking

Control

Cook Timer

(MM:SS)

Automatic

Basket Lifts

• Five product/programming keys: Left basket (up arrow); Right basket (down

arrow); Temperature;

Program (V); and Filter.

• Four digit display window that indicates fryer status, time left to cook, and actual or set point temperature.

SOLID STATE CONTROL, D MODEL

• Two LED lamps that illuminate when a basket timer is being programmed, 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.

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 basket selection keys; Oil Temp; Program key (V); and two arrow keys.

• Left and Right Basket Selection Keys - Select which basket lift to use with the product/ programming keys, and initiates the program cooking cycle (for units with or without basket lifts).

• Left and Right Arrow Keys - Used to initiate programming of time, and checking stored values (left 1-5 and right 6-0).

Page 7 of 56 F35660 Rev. A (0717)

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

• Left and Right displays that indicate actual or set point temperature, remaining times, operating modes, and completion of preheat period.

• Two

LED lamps on the Oil Temp key that indicate heat on and tem individual LED lamps above each of the ten product/programming keys? LED lamps blink when a product key is activated, and are solid when using a key for programming.

COMPUTER CONTROL (OLDER), C MODEL

• Filter Key - Starts pump motor to circulate shortening through the filtering system.

COMPUTER CONTROL (NEWER), C MODEL

SPECIFICATIONS

Electrical

• 120 VAC supply. power for the fryer controls, basket lift controls (if installed) , and the filtering controls on Kleenscreen battery fryers.

Gas Pressures

Manifold (per fryer section):

A 24 VAC transformer provides

Fig. 4

Fig. 5

• 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. battery units)

NOTE: Propane or Natural gases - 14" W.C. (max).

Input BTU Rating

F35660 Rev. A (0717)

Page 8 of 56

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

GR Series

GRD35, GRC35,

GRD35F, GRC35F

GRD45, GRC45,

GRD45F, GRC45F

GRD65, GRC65,

GRD65F, GRC65F

GRD85, GRC85,

GRD85F, GRC85F

No. of Tubes

3 90,000

4 120,000

5 150,000

BTU/HR/

Section

TOOLS

Standard

• Standard set of hand tools.

• VOM with minimum of NFPA-70E CAT III 600V, UL/CSA/TUV ohms per volt. Meter 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.

listed. Sensitivity of at least 20,000

• 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 on Burndy connectors.

Page 9 of 56 F35660 Rev. A (0717)

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.

Control Panel

1. Remove screws at top of control panel, and rotate panel downward.

COMPUTER CONTROL, C MODEL

Fig. 6

2. Disconnect wiring harness, then lift off panel.

NOTE: The cooking control, control box, interface board, and wiring harness are now accessible.

Reverse procedure to install.

Basket Lift Covers

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 flame.

NOTE: This procedure applies to fryers with automatic basket lift option only.

1. Remove basket assembly lift arms from support rods.

solution (bubbles). Do not use an open

Fig. 7

A. Lift upper cover over support rods, and

place cover to the side.

3. Remove screws securing lower cover to motor mounting base.

Fig. 8

4. Reverse procedure to install.

2. Remove screws securing upper cover to flue wrap.

F35660 Rev. A (0717) Page 10 of 56

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. A field service ground kit is available to prevent damage. The be used any time the control board is handled.

1. Remove control panel as outlined under COVERS AND PANELS.

2. To remove:

field service grounding kit must

A. Solid State Control: Proceed to Step 3.

B. Computer Control: Remove mounting nuts

securing computer control and mounting panel to front control panel. Proceed to Step

Fig. 9

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 to the machine and follow lockout / tagout procedures.

1. Open the fryer section doors above filter pan.

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. 11

Page 11 of 56 F35660 Rev. A (0717)

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

OF PARTS

4. From underneath the fryer:

A. Disconnect the discard valve switch lead

wire connector from power supply box.

B. Remove switch mounting screws.

Fig. 13

Fig. 12

5. Reverse procedure to install and check for proper operation.

GAS BURNERS

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

2. Remove gas burner shipping ties (if installed).

to the fryer section being serviced.

3. On battery fryer sections only, remove drain pipe.

Fig. 14

NOTE: On fryers with gas valve arm extension,

remove cotter pin 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 bottom.

securing handle to gas valve on/off

NOTE: The burners mount to the fryer's burner mounting bracket by shoulder bolts that rest in the keyway slot.

F35660 Rev. A (0717) Page 12 of 56

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

OF PARTS

Fig. 16

2. Reverse procedure to install.

GAS COMBINATION VALVE

Fig. 15

5. Reverse procedure to install.

GAS ORIFICE

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. Remove gas orifice spud from orifice extension.

NOTE: The spud screws into the orifice extension. When installing, do not overtighten the spud, or damage to the threads may occur.

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.

All gas joints disturbed during

servicing must be checked for leaks. Check with a soap and water 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 BURNERS.

2. Disconnect lead wires from gas combination valve.

3. On fryers with gas valve arm extension only, remove cotter pin securing handle to gas valve on/off knob adaptor, and pull handle away from valve assembly.

solution (bubbles). Do not use an open

GAS

Disconnect pilot tube from has combination valve.

5. Disconnect gas line fittings, then remove gas combination valve.

Page 13 of 56 F35660 Rev. A (0717)

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

OF PARTS

A. Remove gas line fittings from gas

combination valve, and install (in same orientation) on the replacement valve.

Fig. 18

2. Remove wire tie, and disconnect ignitor cable from ignitor/flame sense electrode on the gas pilot.

Fig. 17

6. Reverse procedure to install, and check for proper operations.

NOTE: Clean the pipe threads, and apply pipe joint compound to threads. Any pipe joint compound used must be resistant to the action of propane gases.

GAS PILOT

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.

All gas joints disturbed during

servicing must be checked for leaks. Check with a soap and water flame.

solution (bubbles). Do not use an open

Fig. 19

NOTE: When installing, replace wire tie to secure

ignitor cable.

3. Disconnect pilot tube from gas pilot.

4. Remove two screws securing gas pilot to mounting bracket.

To remove gas orifice from pilot for inspection or cleaning, disconnect the gas orifice fitting from pilot body.

1. Remove pilot burner assembly and bracket from pilot bracket stand-off on the fry tank.

F35660 Rev. A (0717) Page 14 of 56

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

OF PARTS

CAUTION If orifice is clogged with debris, clean with

air or liquid only.

Fig. 20

5. Reverse procedure to install, and then check for proper operation.

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 outlined under GAS BURNERS.

5. Remove the probe retaining and packing nuts.

TEMPERATURE PROBE

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.

CAUTION

temperature probe, or damage may occur.

1. Drain shortening from fryer tank.

2. Disconnect temperature probe and drain valve interlock (DVI) connector.

Do not sharply bend and kink the

Fig. 21

Fig. 22

Page 15 of 56 F35660 Rev. A (0717)

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

OF PARTS

6. Remove screws securing probe mounting clips and probe to the fryer heat tube (inside tank), then remove probe.

Fig. 23

7. Reverse procedure to install.

8. Check cooking controls calibration as outlined in COOKING CONTROL CALIBRATION.

HIGH LIMIT THERMOSTAT

Fig. 24

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.

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

4. Remove screws securing the high limit to mounting bracket.

from high limit thermostat.

5. Remove the capillary tube retaining and packing nuts.

6. Remove screws securing mounting clips and

F35660 Rev. A (0717) Page 16 of 56

Fig. 25

capillary tube then remove capillary tube.

to the fryer heat tube (inside tank),

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

OF PARTS

Fig. 26

7. Reverse procedure to install.

POWER SUPPLY BOX

COMPONENTS

Disconnect the

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

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.

Fig. 27

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 flame.

NOTE: The power supply box must be removed to access the following components: ignition control module, transformer, R1 pump motor relay, and R2 fill relay.

1. Remove burners as outlined under BURNERS.

2. Remove wire tie, and disconnect ignitor cable from ignitor/flame sense electrode on the gas pilot.

solution (bubbles). Do not use an open

GAS

5. Remove screw securing power supply box to mounting bracket.

Fig. 28

NOTE: Power supply box is slotted at the rear, and

secured by a hanging bracket (loose fit).

6. Remove cover from power supply box.

Fig. 29

Page 17 of 56 F35660 Rev. A (0717)

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

OF PARTS

7. Disconnect lead wires replaced, then remove from power supply box.

8. Reverse procedure to install, and check for proper operation.

from the component being

Fig. 30

FILL SOLENOID VALVE

(KLEENSCREEN FRYERS ONLY)

4. Remove lower basket COVERS AND PANELS.

5. Disconnect swivel pipe fitting at rear of fry tank.

6. Disconnect (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,

fill solenoid valve lead wire connector

and install on replacement valve.

lift cover as outlined under

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 fryer section doors above filter pan.

2. Pull

3. Remove bottom cover from base frame.

out filter drawer, remove filter tank assembly, and push the tank support arms back into place under the fryer.

Fig. 32

8. Reverse procedure to install, and then check for proper operation.

BASKET LIFT TUBE

Disconnect the

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

1. Remove basket lift cover as outlined under COVERS AND PANELS.

2. Remove nut securing lift bar to the lift tube.

3. Remove then remove bracket and lift tube.

screws securing lift tube bracket to fryer,

Fig. 31

F35660 Rev. A (0717) Page 18 of 56

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

OF PARTS

Fig. 34

4. Remove screws securing basket lift motor to cam bracket, then remove motor from bracket.

5. Reverse procedure to install, and then check for proper operation.

Fig. 33

4. Reverse procedure to install.

BASKET LIFT MOTOR

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 and basket lift motor.

3. Loosen to the basket lift motor shaft.

set screws securing crank arm assembly

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.

3. Remove screws securing cam switch to cam bracket.

Page 19 of 56 F35660 Rev. A (0717)

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

OF PARTS

Fig. 36

5. Reverse procedure to install.

PUMP AND MOTOR

(KLEENSCREEN FRYERS ONLY)

Fig. 35

4. Reverse procedure to install.

BASKET LIFT CAM

Disconnect the

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

1. Remove basket lift cover as outlined under COVERS AND PANELS.

2. Remove nut securing lift bar to cam assembly.

3. Loosen cam set screw.

Remove screw securing cam to the crank arm assembly.

Disconnect the

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

1. Open the fryer 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.

4. Disconnect pump motor lead wire connector (2pin).

5. From underneath the fryer:

section doors above the filter tank

Fig. 37

F35660 Rev. A (0717) Page 20 of 56

Disconnect flexible line fittings from pump inlet and from pipe tee in pump outlet line.

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.

4. On battery fryer sections only, remove bolts securing valve.

Fig. 38

6. Remove pump motor assembly from fryer.

A. Remove pipe fittings from the pump, and

install on replacement pump and motor assembly.

the drain pipe flange to the manual drain

7. Reverse procedure to install.

NOTE: When installing, ensure the rubber vibration pad or grommets are installed under the motor mounting plate.

FRY TANK ASSEMBLY

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.

All gas joints disturbed during

servicing must be checked for leaks. Check with a soap and water flame.

solution (bubbles). Do not use an open

Fig. 39

5. Disconnect temperature probe and drain valve interlock switch (DVI) connector (6-pin).

Fig. 40

6. Remove power supply box as outlined under POWER SUPPLY BOX.

7. On battery fryer sections only, remove bottom cover from base frame.

1. Drain shortening from fryer tank.

2. Disconnect the 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.

Page 21 of 56 F35660 Rev. A (0717)

Fig. 41

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

OF PARTS

8. Remove gas manifold and frame assembly from the fryer's base frame:

A. For the fryer

assembly on battery fryers or single floor model fryers, remove mounting nuts securing gas manifold and frame assembly to the fryer's base frame.

B. For all other fryer sections in a battery only,

remove mounting nuts securing gas manifold and frame assembly to the Vshaped frame support bracket.

sections above the filter drawer

16. Remove high limit thermostat as outlined under HIGH LIMIT THERMOSTAT.

17. On battery fryer tank from sections with the mechanical discard valve:

A. Loosen U-bolt securing discard pipe with

male quick disconnect fitting to the mounting bracket.

B. Remove pipe from elbow on mechanical

discard valve.

18. Remove bolts securing gas manifold and frame assembly to the fry tank.

19. Pull the gas manifold assembly from fry tank.

20. Disconnect drain valve interlock switch (DVI) connector (2-pin), and remove manual drain valve.

21. Remove screws securing flue box to fry tank, then remove flue box.

22. Reverse procedure to install all the parts removed from original fry tank onto replacement fry tank, then install the assembly.

sections only, when removing fry

Fig. 42

9. Remove lower basket lift cover as outlined under COVERS AND PANELS.

10. Disconnect swivel fitting from fry tank at the rear (shortening line inlet to fry tank).

11. Disconnect flexible gas line fitting at manual shutoff valve (gas supply inlet to valve).

12. Remove screws securing the top of fry tank to the flue wrap.

NOTE: Remove wire ties securing lead wires and wiring harnesses as necessary before removing fry tank and when removing components from fry tank for reuse.

13. Grasp the fry tank at the top (by 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.

F35660 Rev. A (0717) Page 22 of 56

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

ADJUSTMENTS

SERVICE PROCEDURES AND ADJUSTMENTS

TEMPERATURE PROBE TEST

The temperature probe is used for both the solid state control and the (resistance temperature detector) of the thermistor type. As temperature increases, the resistance value decreases.

Probe Fault

If a temperature probe fault or high temperature condition occurs, a fault message will be displayed and the electronic alarm will sound continuously. The heat demand and basket lift outputs are deactivated. If a cooking cycle is in process (timer active), it will be canceled, and the key pad disabled.

This will continue until the fault clears, power is cycled or problem resolved.

Control Type

Solid State

Computer

To Check:

1. Turn off power switch.

2. Disconnect the temperature probe and the drain valve interlock (DVI) connector.

computer control. The probe is an RTD

Display Message

An open will display "Prob," and a short or high temperature condition will display "HI."

An open will display "PROBE OPEN," and a short of high temperature condition will display "PROBE SHORT."

A. If the measured resistance values are within

the allowable 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)

77 90,000-110,000

350 604-836

415

460

High temperature alarm level for the

NOTE:

cooking controls.

Shorted probe equivalent

temperature.

range, the probe is functioning

Resistance (Ω)

302-369

191-233

COOKING CONTROL

CALIBRATION

NOTE: Verify condition of temperature probe as

outlined under TEMPERATURE PROBE TEST before proceeding.

1. Check the level must be between the MIN and MAX fill lines before proceeding.

2. Allow shortening to cool below 300°F.

3. Place a thermocouple in the geometric center of the fry tank, 1 inch below the shortening surface.

of shortening in fry tank. The level

Fig. 43

NOTE: The connector as six pin positions, and is

labeled G on the wiring diagram.

3. Test the probe using a VOM to measure resistance. Connect the meter leads to pins 3 and 4 on the male connector.

4. Set the cooking control to 350°F, and turn on the fryer.

5. Monitor the heat indicator lamp. When cooking control is calling for heat, lamp will be on. If cooking control is satisfied, lamp will be off.

Solid State Control – Decimal point of first character indicates heat on when lit.

Computer Control – Two LED lamps on the Oil Temp key indicate heat on when lit.

NOTE: Agitate the shortening to eliminate any cold zones.

A. Allow cooking control to cycle three times to

stabilize shortening temperature.

Page 23 of 56 F35660 Rev. A (0717)

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

ADJUSTMENTS

B. Record meter reading from thermocouple

when the cooking control cycles off and on for at least two complete heating cycles.

6. Calculate the average temperature reading when the heat lamp goes off to the temperature reading when the heat lamp comes on, then dividing the sum by 2.

[Temp (lamp off) + Temp. (lamp on)] ÷ 2 = Average Temp.

Example: (360 + 340) ÷ 2 = 700 ÷ 2 = 350°F

The average temperature should be 350°F (±5°F).

A. If the average temperature reading is within

tolerance, cooking control is properly calibrated.

B. If the average temperature reading is out of

tolerance, perform the following:

1) Solid State Control – Adjust the offset temperature accordingly, as outlined in SOLID STATE CONTROL.

2) Computer Control – Adjust the offset temperature accordingly, COMPUTER CONTROL - OLDER CONTROLS.

7. Repeat the average temperature calculation for three attempts. Allow the cooking control to

up to cycle at least two times between adjustments, before performing the calculation

8. If calibration is unsuccessful, the cooking control

may be malfunctioning and cannot be adjusted properly. Install a replacement cooking control and check calibration.

temperature by adding the

as outlined in

ELECTRONIC IGNITION SYSTEM

Operation

When the main control module is energized with 24 volts between terminals 5 and 6.

An output of 24 volts is sent from terminals 2 and 3 to the pilot coil on the combination valve, allowing gas flow to the pilot; and spark voltage is sent from terminal 9 to begin sparking at the ignitor/flame sense electrode. The sparking will continue until an adequate pilot flame is sensed, or for a maximum of 90 seconds.

If pilot ignition is not established within the first several seconds of ignition trial time, the cooking control displays a message indicating pilot out or ignition

power switch is turned on, the 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 displayed by the control indicating ignition lockout; keypad is disabled, and the electronic alarm will sound continuously.

The system remains locked out until the power switch is cycled to reset the system and re-start the ignition trial cycle.

Fig. 44

Once the pilot flame is confirmed, a 24 volt output from terminal 1 will provide the ignition status input signal to the cooking control. When the cooking control calls for heat, the heat output is activated, and power is applied to the heat control Triac on the Control Interface Board. With the Triac powered, the main valve coil on the combination valve is then energized, allowing gas flow to the burners.

Terminal Description

MV (main voltage) - 24VAC output will

2 MV/PV (common).

4 Burner ground.

5 24VAC ground.

6 24VAC hot (input).

be present, provided the ignitor/flame sense electrode is sensing an adequate pilot flame.

PV (pilot voltage) - 24VAC output will be present after the ignition module is powered. The voltage will remain present, provided an adequate pilot flame is sensed. If the pilot flame is not sensed within the ignition trial time, the ignition module locks out, which removes the output voltage.

Spark voltage output to ignitor/flame sense electrode; and for pilot flame current rectification.

FLAME SENSE CURRENT CHECK

1. Turn off the power switch.

F35660 Rev. A (0717) Page 24 of 56

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

ADJUSTMENTS

2. Access the ignition control module in the power

supply box.

3. Remove the jumper wire between terminals

marked with an asterisk (*) and an 8.

Fig. 45

4. Set VOM to micro amp scale (DC), and connect

meter leads at the same terminals. Negative (-) meter lead to the asterisk (*) terminal, and positive meter lead to terminal 8.

5. Turn on power switch, and set cooking control to

call for heat.

6. Meter reading should be above 1.0 micro amp

(minimum) and steady.

A. If reading is greater than or equal to the

value given, then flame sense current is within tolerance.

1) Turn off power switch and replace jumper wire.

B. If reading is less than the value given, turn

off power switch and replace jumper wire.

1) Perform ELECTRONIC IGNITION CONTROL TEST.

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 flame.

3. Verify all electrical connections on the ignition control module are secure.

4. Verify the ground wire connections on the ignition control module and the gas pilot mounting bracket are clean and secure. The gas pilot should have good metal to metal contact to the pilot mounting bracket on the fryer.

5. Remove the gas pilot and check the following:

A. Inspect the ceramic insulator on the ignitor/

B. Inspect the ignitor electrode and ground clip

C. The gap between the ignitor/flame sense

solution (bubbles). Do not use an open

flame sense electrode for cracks or evidence of exposure to extreme heat, which can permit leakage to ground. If either of these conditions exist, install a replacement gas pilot.

for contaminates or corrosion. Clean those surfaces as necessary.

electrode and the ground clip should be 1/8 inch. If the gap is outside of this dimension, bend the ground clip as necessary, to make the adjustment.

ELECTRONIC IGNITION CONTROL

TEST

If the ignition control module is not generating a spark to ignite gas pilot, perform the following checks.

1. Turn on the power switch, and verify the ignition control module is receiving power from the transformer.

A. If 24VAC is present between terminals 5

and 6 on the ignition control module, then module is receiving power. Turn off the power

switch, and continue with procedure.

B. If 24VAC is not present, then find the source

of the problem.

Page 25 of 56 F35660 Rev. A (0717)

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

ADJUSTMENTS

D. If ignitor is still not sparking, turn off the

power switch, disconnect power, and turn off the gas supply.

Fig. 46

D. Check the ignitor cable connection for

tightness and damaged insulation. If the ignitor cable appears to be damaged, install a replacement ignitor cable.

6. With gas pilot installed and the ignitor cable connected, reconnect power and turn on the gas supply.

7. Turn on power switch, and observe spark from ignitor.

A. If spark from ignitor is present and ignites

the gas for the pilot, and the burners light, the system is working properly.

B. If gas pilot lights but does not maintain an

adequate flame during the trial for ignition (90 seconds), check pilot orifice for clogging.

CAUTION If orifice is clogged with debris, clean with

air or liquid only.

C. If spark from ignitor is present but does not

ignite pilot gas before the ignition control module locks gas in the line for ignition.

Turn off the power switch to reset the module. Wait 5 minutes between ignition tries for unburned gas to vent. Turn on the power switch. Sparking should resume to ignite pilot. The module may need to be reset several times before ignition takes place.

out, there may not be enough

8. Install a replacement check for proper operation.

ignition control module, and

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, remove the 1/8-inch NPT plug (pressure tap) on the outlet side of the valve, and attach a manometer.

NOTE: at the pressure tap in the manifold.

3. Turn on the gas supply, the gas combination

4. Observe the manometer pressure reading, and

5. Remove the adjustment screw cap to access the

Gas manifold pressure can also be measured

valve, and the power switch.

A. Verify burners light.

compare to the pressure chart near the end of this procedure.

A. If other appliances are connected to the

same gas line, turn them all on and check manometer pressure again. If a pressure drop of 1/2 inch water column or more is observed, then the gas supply needs to be checked by the gas line installer or the local gas company for adequate sizing.

B. If adjustment is necessary, continue with

procedure.

pressure adjustment screw.

F35660 Rev. A (0717) Page 26 of 56

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

ADJUSTMENTS

3. Check basket lift operation.

A. If necessary, adjust as outlined below

4. When basket is in the up position, the bottom of

basket should be out of the shortening. When

the 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 adjustment bolt to raise or lower basket arm as required. Both baskets should be same height.

B. Tighten stop nut when complete.

NOTE: If adjustment is too low, when the basket is lowered, it will disengage from basket arm.

Fig. 47

A. To increase pressure, turn the screw

clockwise. To decrease pressure, turn the screw counterclockwise.

NOTE: Accurate gas pressure adjustments can be made only with the gas on and burner lit.

6. Set the pressure as outlined below:

Pressure Readings (inches W.C.)

Gas

Type

Natural 4 7 5

Propane 10 11 11

NOTE: If the incoming line pressure is less than the minimum stated, then the manifold pressure cannot be set correctly.

7. Once the correct pressure has been set, turn off

8. Check for proper operation.

Manifol

the power switch, and replace the adjustment screw cap and 1/8-inch NPT plug (pressure tap) on the outlet side of the valve.

Recommended Min Max

Line

BASKET LIFT ARM ADJUSTMENT

1. With shortening at room temperature, verify the shortening level is between MIN and MAX lines in fry tank. Add shortening as needed.

NOTE: Shortening will expand when heated. Do not fill the fry tank past the MAX line.

2. Turn on power switch, and set temperature to 350°F. Allow the shortening to reach set temperature.

Fig. 48

SOLID STATE CONTROL

Operation

Refer to the Installation & Operations manual for specific operating instructions.

Error Messages

For information on solid state control error messages, refer to SOLID STATE CONTROL under TROUBLESHOOTING.

Programming

The solid state control's programming mode is used to set the control's operational parameters.

NOTE: If a product key is active (timing), programming mode cannot be entered.

Page 27 of 56 F35660 Rev. A (0717)

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

ADJUSTMENTS

1. Press V key to enter Program Mode.

If the Parameter Lock feature is disabled, Program Mode entry is immediate. If the Parameter Lock feature is enabled "LoC" will be displayed.

Use the following

key sequence (password) to enter Program Mode: Left basket/up; Left basket/up; Right basket/down; Right basket/down.

Fig. 49

Program Item

Left Timer

Right Timer

Set Point

Temperature

Calibration

Offset

• Press Left Basket to increase, or Right Basket to decrease cook time.

• Press Left Basket to increase, or Right Basket to decrease set point temperature.

• Press Left Basket to increase, or Right Basket to decrease offset temperature (range -20 to +20).

Key Sequence

NOTE: If the proper key sequence is not entered

within 6 seconds, the controller exits Program Mode.

2. Beeper chirps on

each successful key press. If a key is not pressed within 2 minutes, the control will automatically exit programming.

3. To scroll through each of the Program items, press V and release.

4. To exit Program Mode at any time, press V and hold for 1 second.

Display

LED above left basket is on.

15:00 time value with flashing colon

(MM:SS).

LED above right basket is on.

15:00 time value with flashing colon

(MM:SS).

340F or 171C

Current set point with flashing F or C.

00F or -00F

Always in °F.

CY S

Melt Options

Energy Source

Parameter

Lock

Degrees F or C

NOTES:

• Press Left Basket or Right Basket to scroll through Melt Options.

• Press Left Basket or Right Basket to select the fryer's energy source, electric or gas heat.

• Press Left Basket or Right Basket to select desired Parameter Lock condition.

• Press Left Basket or Right Basket to select desired Temperature scale.

Time will change in 1-second increments, accelerating if the button is held.

Temperature will change in 1-degree increments, accelerating if the button is held.

Selecting Parameter Lock enabled will take effect on the next Program Mode entry.

Default value shown in bold.

F35660 Rev. A (0717) Page 28 of 56

CY L = Liquid.

CY S = Solid.

CY 0 = No.

ELEC or gAS

Uloc or LoC

Selected parameter is enabled if

flashing.

F or C

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

ADJUSTMENTS

COMPUTER CONTROL - OLDER

CONTROLS

Operation

Refer to Installation & Operations manual for specific operating instructions.

Service Programming

The computer control's Service used to perform system diagnostic tests or to edit program items that affect the fryer's operation.

NOTE: If a product key is active (timing), Service Programming cannot be entered.

Error Messages

For information on computer control error messages, refer to TROUBLESHOOTING.

Melt Cycle On/

COMPUTER CONTROL under

Program Item

• Press 1 to view offset temperature. To

Temperature

Offset

Off Times

Diagnostic

Mode

edit, enter the desired offset temperature (range 0 to 20°F).

• Press V to accept selection.

• Press Toggle key to select the direction of the temperature offset (positive or negative).

• Press 2 and set melt cycle on time. all MLTON:02 MELT ON

• Press Left or Right Timer arrow key and set melt off time.

• Press 5 to enter diagnostic mode (outputs for heat, basket lifts, and cooking timers turned off).

• Press 1 to toggle left basket lift output; left basket lift lowers. LED toggles on/off.

• Press 2 to toggle right basket lift output; right basket lift lowers.

• Press and hold 3 to temporarily activate heat demand (heat on); release to deactivate heat demand (heat off). LED

toggles on/off.

• Press 5 to test drain valve interlock. Change valve position (open/close) and press 5 again to update display.

Drain valve closed. 5, 7 DRN ON DRN ON

Drain valve open. 7 5 DRN OFF DRN OFF

Programming mode is

Key Sequence

LED toggles on/off.

Enter Service Mode

1. Press V key, and Use product key numbers (1 though 0) to enter values.

A. "SERVICE" is displayed in the left window,

and the LED lamps above the product keys 1, 2, 4, 5, 6, 7, and 8 come on.

B. Beeper chirps on each successful key

press. If a key is not pressed within 2 minutes, the computer will automatically exit Service Programming (except in diagnostic mode).

2. To exit a Program item after making a selection, press V to accept and return to Service Programming.

3. To exit Service Programming and return to operation mode, press V key twice.

LED Status

ON OFF Left Right

all OFF 00 F DEGREES

5, 7 DIAGNOST DIAGNOST

5, 7 L BASKET L BASKET

5, 7 R BASKET R BASKET

5, 7 HEAT DEM HEAT DEM

5, 7

enter password (default: 1972).

Display

POSITIVE OR

NEGATIVE

MLTOFF:13 MELT OFF

DEGREES

Page 29 of 56 F35660 Rev. A (0717)

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

ADJUSTMENTS

Program Item Key Sequence

• Press and hold 6 to light all display elements.

• Press 7 to test ignition status input. Turn valve on/off, and press 7 again to update

display.

Gas valve on. 5, 7 PILOT ON PILOT ON

Gas valve off or ignition module lock out. 5 7 PILOT OF PILOT OF

• Press 6 to view the cooking cycle lock out

Temperature

Ready Level

temperature (always desired lock out temperature (rand 0 to

99°F).

°F). To edit, enter the

• Press 8 to enter the More Service

More Service

Programming

Level

Programming. To edit one of the selections, enter the number desired. To exit a selection, press V to accept and return to More Service Programming.

• Press 4 to view or edit the Shake Alarm duration: 0-98 seconds; 99-continuous alarm until canceled manually.

• Press 5 to view or edit the Hold Alarm duration: 0-98 seconds; 99-continuous alarm until canceled manually.

• Press 6 to view of edit the Cooking cycle cancel delay; 0-10 seconds.

• Press 7 to view or edit the number of basket lifts.

Press Toggle key to select the number of basket lifts.

0 = none; 1 = one lift; 2 = two lifts.5

• Press 8 to view or edit the fryer's Energy Source, electric or gas heat.

Press Toggle key to select the fryer's Energy Source, electric or gas heat.6

LED Status

Display

ON OFF Left Right

all *.*.*.*.*.*.*·*·* *.*.*.*.*.*.*·*·*

5, 7

all READY40F

4, 5, 6,

7, 8

MORE SERVICE

DT-DUR05 DURATION

HD-DUR.·05 DURATION

CANCEL.·01 DELAY

all LIFTS 0, 1, or 2

all FRYER

ELECTRIC or

gAS

F35660 Rev. A (0717) Page 30 of 56

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

ADJUSTMENTS

Program Item Key Sequence

Oil Temp LED lamps cycle on/off with heat.

"PILOT ON" indicates gas valve. "PILOT OF" (as displayed) indicates gas valve is off and computer is not receiving input status signal from valve. Gas ignition trial sequence starts. If pilot does not light within ignition trial time, "PILOT OF" is displayed and ignition module locks out. Service programming can still continue, but upon exit, "PILOT OF" is displayed. Cycle power to reset.

If the cooking temperature is below set point by this number, a cooking cycle cannot be

NOTES:

started.

The number of seconds to hold a product key to cancel a cooking cycle.

If zero basket lifts are selected, the idle setback option under GRC SERIES PROGRAMMING in the Installation & Operation manual is not available.

Exit Service Programming Mode. Cycle power switch to lock selection into memory.

Default melt cycle on/off times shown for solid shortening for an electric fryer's energy source (default shortening type and energy source).

Default value shown in bold.

LED Status

Display

ON OFF Left Right

valve is on and computer is receiving input status signal from

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 key shows 55555555 55555555.)

NOTE: Beeper chirps for as long as the key is held.

3. For each function key pressed, the following values are displayed in each character position on the left and right displays: L (left): E

R (right): R

TEMPERA

TURE:

PROGRA

M (V):

TOGGLE: L

BOIL: B (Single floor model fryers)

FILTER: D (Kleenscreen fryers)

LEFT

TIME:

RIGHT

TIME:

4. Turn off power to exit test.

COMPUTER CONTROL - NEWER

CONTROLS

Operation

For operating instructions and programming, refer to OPERATOR MANUAL and computer controls programing start guide.

Fig. 50

Service Programming

The computer controls service settings mode is used to select the settings perform fryer diagnostic tests.

Enter Service Setting Mode

that affect fryer operation and to

Page 31 of 56 F35660 Rev. A (0717)

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

ADJUSTMENTS

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. 52

NOTE: The controls heat

and the heat/ignition status input signal is ignored if the fryer is in cook mode or idling.

1. Turn power switch on and when the program revision is displayed, press PROGRAM to enter Service Setting Mode.

A. The SERVICE SETTINGS are shown on the

left and right display screens.

2. Verify the settings shown on the display screen are correct for the fryer being serviced.

3. To change a service setting.

A. Press the desired product number key (1

thru 6) on the control panel that corresponds to the service setting number on the display screen.

1) Beeper chirps on each successful key press and all LED's are off. When a service item is selected, only the keys required to change the setting are active.

B. Press toggle key to alternate between

available selections, or use product number keys where indicated to enter a value. The current selection will be "blinking".

C. Press PROGRAM key to save the selection

- "Blinking" stops.

demand output signal is off

Fig. 54

A. Press the desired

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 component.

1) Press the same product number key again to turn the output off.

NOTE: Item 5 (drain) displays the real time status and does not require pressing the corresponding product number key. Item 3 (heater) - The output signal will be active for 3 seconds (heat on) then turn off.

B. For item 6 DISPLAY: - change the setting as

desired.

1) Press product number key 6 to access the display screen adjustment settings.

2) Press the left or right arrow key on the PROGRAMMING MENU SELECTION screen to select the screen to adjust. Display shows "THIS LCD SELECTED".

product number key (1, 2,

F35660 Rev. A (0717) Page 32 of 56

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

ADJUSTMENTS

c. CONTRAST - Press the L key on

the keypad to lower

the contrast or press the R key on the keypad to raise the contrast.

4) Press PROGRAM key to return to DIAGNOSTICS MODE.

5. To exit SERVICE SETTINGS MODE and return to normal operation, keypress PROGRAM key.

A. Display reverts to product menu items.

Fig. 55

3) To adjust the selected screen:

a. BACKLIGHT - Press toggle key to

turn display backlight ON or OFF.

b. PIXEL MODE - Press product key

number 1 two times to change display from white background with black letters to black background with white letters. Press the key again to change it back to original setting.

SERVICE

SETTINGS

1. Brand

2. Celsius

3. Mode

4. Type

KEY SEQUENCE

Press 1 to change brand name.

Press toggle key to select HOBART or VULCAN.

Press PROGRAM Key to save the selection.

Press 2 to change temperature scale.

Press toggle key to select NO or YES.

Press PROGRAM Key to save the selection.

Press 3 to change fryer mode.

Press toggle key to select BOIL or FILTER.

Press PROGRAM Key to save the selection.

Press 4 to change energy source.

Press toggle key to select ELECTRIC, GAS or GAS*.

NOTE: VK and TR Gas Fryers MUST be set to GAS*.

Press PROGRAM Key to save the selection.

DISPLAY

ITEM

FLASHES

DESCRIPTION

VULCAN Brand name at power on

Temperature °F/°C

No = Fahrenheit

Yes = Celsius

Boil or Filter

Boil

Boil key = Stand alone fryer

Filter key = Filter system battery

ELECTRIC Electric or Gas

Page 33 of 56 F35660 Rev. A (0717)

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

ADJUSTMENTS

SERVICE

SETTINGS

5. Temp Offset

6. Baskets

7. Diagnostics

1.) L Basket

2.) R Basket

3.) Heater

4.) Filter

5.) Drain

DISPLAY

KEY SEQUENCE

ITEM

FLASHES

DESCRIPTION

Press 5 to change offset temperature.

Press toggle key to change offset value to (+) or (-) (positive or negative).

Enter the offset value using the number keys on the keypad.

NOTE: Offsets the actual oil temp sensed by the temperature probe during calibration.

Enter a positive

OFF 00 F

(always in °F)

Degrees Fahrenheit and positive zero are the defaults.

number to decrease the actual oil temperature; or a negative number to increase the oil temperature.

Press PROGRAM Key to save the selection.

Press 6 to change the number of basket lifts.

Press toggle key to select 0, 1, or 2.

2 Display shows 0, 1 or 2

Press PROGRAM Key to save the selection.

Press 7 to enter diagnostic mode (outputs for heat, basket lifts and cooking timers remain off).

___

DIAGNOSTICS

(shown on display screen)

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

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

Press 3 to turn heat output ON for 3 seconds only. OIL TEMPERATURE LED's light with heat demand.

On then OFF

Gas burner or heating elements turn on then off.

Press 4 to turn filter output ON. ON Pump motor on

NOTE: Filtering system fryer batteries only

Press 4 again to turn output OFF. OFF Pump motor off

Display indicates the position of the drain valve. (DVI switch input to control) (keypress not required).

CLOSED

Manually change valve position to test, and display will update.

Drain valve open OPEN

Drain valve closed CLOSED

F35660 Rev. A (0717) Page 34 of 56

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

ADJUSTMENTS

SERVICE

SETTINGS

6.) Display

Exit Diagnostic and Service Mode

NOTES:

KEY SEQUENCE

Press 6 to adjust the left and right display screen settings. Refer to LCD display screen picture under ENTER SERVICE SETTINGS MODE.

Press the left or right arrow key on control panel to select the screen to adjust.

To adjust the selected screen:

• BACKLIGHT - Press toggle key to turn display backlight ON or OFF.

• PIXEL MODE

- Press product key number 1 two times to change display from white background with black letters to black background with white letters. Press the key again to change it back to original setting.

• CONTRAST - Press the L key on the keypad to lower the contrast or press the R key on the keypad to raise the contrast.

Press PROGRAM Key to exit the selected DIAGNOSTICS test and return to Service Settings Mode.

Default values shown in bold.

DISPLAY

ITEM

FLASHES

DESCRIPTION

N/A THIS LCD SELECTED

SERVICE SETTINGS

N/A

(shown on display screen)

Alarm Messages The alarms take precedence over any other controller

off, active timers canceled).

ALARMS

mode or function (outputs

DESCRIPTION

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

PROBE FAULT

is cycled.

• OPEN - Probe detects temperature less than 40°F.

• SHORTED - Probe detects temperature greater than 460°F.

If the ignition status input is not present, both displays show IGNITION LOCKOUT. If the input comes back in less than 8 seconds, the displays will

IGNITION STATUS

GAS -Selected under service settings - Type.

revert to normal operation.

If the input remains inactive for more than 90 seconds, IGNITION LOCKOUT will be shown on

the left display and CHECK GAS SUPPLY will be shown right display, and the alarm will sound continuously. This alarm state will remain until power switch is cycled.

IGNITION STATUS

GAS Selected incorrectly under service settings - Type.

After 20 seconds in normal operation mode, IGNITION LOCKOUT will be shown on the left display and CHECK GAS SUPPLY will be shown right display, and the alarm will sound continuously.

Enter SERVICE SETTINGS and select GAS* as the type.

Page 35 of 56 F35660 Rev. A (0717)

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

ELECTRICAL OPERATION

COMPONENT FUNCTION

FRYER CONTROLS Solid State or Computer Cooking Control (D or C

Models) ...............

........................ NOTE: By utilizing the same wiring harness connections, the two control types are

Monitors and evaluates input signals to the control: activates heat output signal to maintain shortening temperature; counts alarm at the end of a cooking cycle; activates the left and right lift output signal to operate the basket lift(s); and activates filter output signal to power the fill solenoid valve.

interchangeable between fryers.

product cook time(s), and signals the electronic

Control Interface

Board .................

Transformer .......... Supplies 24VAC to the cooking control. If equipped with electronic ignition, also supplies

Power Switch ......... Supplies power to control circuit for fryer operation and filtering.

Gas Combination

Valve .................

High Limit

Thermostat ...........

Temperature Probe ... Senses temperature of shortening. Converts the temperature into a resistance valve

Ignition Control

Module ...............

Ignitor/Flame

Sense .................

Provides the output signal interface from the cooking control to regulate gas heating, basket lift operation, and fill solenoid valve operation. The board components consist of a heat control Triac and K1, K2 & K3 N.O. relays.

power to ignition control module. Transformer is energized when power switch is turned on.

Allows gas flow to the pilot when pilot valve coil is energized, and gas flow to the burners when main valve coil is energized. Also regulates the gas manifold pressure.

Prevents the shortening from reaching temperatures over 450°F (auto reset @ 415°F). Serves as a backup to the cooking control’s high temperature alarm setting of 415°F (normal operation resumes when temperature falls below this point).

which is monitored by the cooking control. The probe is an RTD (resistance temperature detector) of the Thermistor type. As temperature increases, the resistance value decreases.

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 control. Electronic ignition models only.

Ignites the gas pilot, and senses the presence of a flame. The flame presence generates a micro-amp flame sense current that is rectified to the ignition control module. The spark ignitor/flame sense is a component for the gas pilot with electronic ignition only.

Drain Valve Interlock

Switch (DVI) ..........

KLEENSCREEN FILTER CONTROLS

Fill Solenoid Valve .... When energized by filter key, the solenoid valve opens to allow the flow of shortening

Pump Motor .......... Operates pump to circulate shortening through filtering system.

Discard Valve

Switch ................

R1 Pump Motor

Relay .................

F35660 Rev. A (0717) Page 36 of 56

A magnetic reed switch mounted on the manual drain valve that supplies a drain valve position signal (open/closed) to the cooking control. When drain valve is open, the drain interlock input to the control is removed (magnetic reed switch contacts open). This prevents gas burners from coming on with the fry tank empty.

through filtering system.

A magnetic reed switch mounted on the mechanical discard valve that closes when discard valve handle is extended to discard the shortening. Prevents R2 filter relay N.C. contacts from suppling power to the fill solenoid valve when filter key is pressed.

When 24VAC relay coil is energized by filter key, supplies 120VAC to pump motor and fill solenoid valve (through R2 fill relay N.C. contacts).

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

R2 Fill Relay .......... When 24VAC relay coil

to open the valve, and allow shortening to flow through filter system.

COMPONENT LOCATION

is energized by filter key, supplies 24VAC to the fill solenoid valve,

Fig. 57

Fig. 56

Fig. 58

POWER SUPPLY BOX

Page 37 of 56 F35660 Rev. A (0717)

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

Fig. 59

SEQUENCE OF OPERATION

Solid State or Computer, Cooking Control

Refer to schematic diagram AI1709 for Cooking Control operation.

F35660 Rev. A (0717) Page 38 of 56

NOTE: If using solid shortening, the 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

• Liquid

• Solid

• No melt

On solid state control only, "CY" (cycle) is displayed before the shortening letter designation, and zero represents none (no melt).

The control then resumes normal operation as described in this sequence.

Conditions.

A. Fryer connected to correct supply voltage

B. Gas supply and gas combination valves are

C. Power switch to the fryer section in the off

D. Shortening at proper level in fry tank, and

E. Cooking control is set up properly and ready

F. Manual drain valve closed (drain valve

G. High limit thermostat closed.

2. Turn on power switch.

A. Power to terminal 5 (COM) on left and right

B. 24VAC transformer energized.

3. Cooking control powers on, initializes and performs a diagnostic self check.

NOTE: If cooking control passes diagnostic self check, the output signals are turned on and operation sequence continues. If cooking control does not pass diagnostic self check, the control displays an error message for the problem, disables keypad, and sounds the electronic alarm continuously. Refer to TROUBLESHOOTING.

4. Ignition module is powered (24VAC), initializes, and generates spark at ignitor (ignition trial cycle starts).

A. Pilot voltage (PV) N.O. contacts close, pilot

L = 16 on, 18 off.

S = 8 on, 26 off (default for gas).

0 = 100% on.

and properly grounded.

on.

position.

below last set point temperature used.

to use.

interlock switch N.O. is closed).

basket relays.

valve coil energized at P3 terminal, and valve opens for gas flow to pilot.

1) Pilot flame established. A micro amp flame sense current is rectified to ignition module through ignitor cable and sparking stops.

2) Main voltage (MV) N.O. contacts close and provide ignition status input signal (24VAC) to 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 indicates ignition lockout, keypad is disabled, and the electronic alarm sounds continuously.

1) The system remains locked out until the power switch is cycled to reset the system and restart the ignition trial cycle.

5. Cooking control evaluates input signals from: ignition status at pin E1-6; drain valve interlock at pin E1-5; and temperature probe at pins E1-3 and E1-4 (high and low).

A. If the inputs to the control are valid and the

shortening temperature is below set point, the heat output (24VAC) at pin E1-8 is then activated and power is applied to heat control Triac. Display indicates the selected melt cycle if shortening temperature is below 135°F; or display indicates heating if shortening temperature is above 135°F.

B. Heat control Triac energized and supplies

voltage to gas valve M1 terminal.

1) Main valve coil energized, and valve opens for gas flow to burners.

2) Burners light and heat the shortening in fry tank.

NOTE: As long as the ignition control module senses a pilot flame, the internal main voltage (MV) contacts (N.O.) on the ignition module remain closed, and main gas valve stays on.

6. Shortening reaches set temperature.

A. Cooking control deactivates the heat output

(24VAC) at pin E1-8, and power is removed from heat control Triac.

1) Main valve coil de-energized, and valve closes.

2) Gas flow stops and burners go out.

Page 39 of 56 F35660 Rev. A (0717)

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

7. Cooking control cycles temperature until: power switch is turned off; ignition input status is removed; drain valve interlock input status is removed; temperature probe input is outside acceptable limits; or a high limit condition occurs.

NOTE: Steps 8 and 9 discuss open high limits. For information on cooking control error messages, refer to TROUBLESHOOTING.

8. If shortening reaches 415°F or higher: cooking control turns off the heat output signal and basket lift output signals; cancels cooking timers (if active); disables keypad; display indicates High Temp; and the electronic alarm sounds continuously.

A. Turn off power switch to silence the alarm.

Fryer operation can resume when temperature drops below 415°F.

9. If shortening reaches 450°F or higher: high limit thermostat opens, power is removed from the pilot valve coil, and valve closes to stop pilot gas flow.

heat output on shortening

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 discard valve closed.

2. Allow shortening to cycle between 300°F and 350°F for approximately 10 minutes.

NOTE: If using solid shortening, once it has melted, stir the shortening to eliminate any solid shortening in cold zone of the fry tank.

3. Open the drain valve to the fryer section in need of filtering, and drain the shortening into filter tank.

A. Display indicates draining.

B. Drain valve interlock contacts open, and the

position of the drain valve is indicated to the cooking control.

A. Ignition trial cycle will start, but pilot will be

unable to light.

B. Turn off power switch to silence the alarm.

Fryer operation can resume when the temperature drops below 415°F.

Kleenscreen Filtering System

Refer to schematic diagram AI1709 for Kleenscreen Filter System operation. Refer to Installation & Operation manual and Kleenscreen Filtration System Supplement manual for specific instructions on filtering.

NOTE: The discard valve handle is connected to a mechanical valve and magnetic reed switch assembly to route the flow of shortening in the filtering system, and supply power to the pump motor.

1. Conditions.

A. Fryer connected to correct supply voltage,

and is properly grounded.

B. Power switch to fryer section to filter turned

on.

C. The cooking control should be set up

properly, and ready to use.

D. Cooking control temperature setting

between 300°F (minimum) and 350°F (maximum).

NOTE: Shortening should not be filtered outside of this temperature range. At lower temperatures, the

NOTE: If using solid shortening, allow hot shortening to stand in filter tank for approximately 6 minutes prior to filtering.

4. Press and hold filter key on the control panel for 3 seconds. The filter output signal (24VAC) at pin E1-9 is turned on, and the interface board K3 relay coil is energized at pins 11 and 4.

A. K3 N.O. contacts close, and 24VAC is

output from the interface board at pin 12.

B. R1 pump motor relay coil (24VAC) is

energized, and both sets of N.O. contacts close.

NOTE: Jumper wire number 24 connects one set of R1 N.O. contacts to R2 COM.

1) Fill solenoid valve is energized (120VAC) through R2 fill relay N.C. contacts, and valve opens.

2) Pump motor is energized (120VAC), and pump circulates shortening through filtering system.

5. When filtering is completed, close the drain valve, and allow the fry tank to refill.

A. Display indicates fill tank.

B. Drain valve interlock contacts close, and the

position of the drain valve is indicated to the cooking control.

F35660 Rev. A (0717) Page 40 of 56

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

6. When all filtered tank, press filter key on the control panel.

A. Power is removed from fill solenoid valve

and pump motor.

B. Display indicates tank full hit temp. If

shortening is at the proper level in fry tank, press and hold the temp key until shortening temperature is displayed. Filtering cycle is complete, and fryer resumes normal operation.

shortening is returned to the fry

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.

Page 41 of 56 F35660 Rev. A (0717)

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

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)

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

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

Page 45 of 56 F35660 Rev. A (0717)

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

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

Page 47 of 56 F35660 Rev. A (0717)

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

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

Filtering System Fryers (cont'd)

Fig. 67

Page 49 of 56 F35660 Rev. A (0717)

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

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

TROUBLESHOOTING

ALL MODELS

Symptoms Possible Causes

1. Drain valve switch open (alarm message displayed), or switch malfunction.

2. Shorted electrode, or an improper ground on ignitor/flame

No spark to ignite pilot gas, display lit.

sense.

3. Ignitor cable open.

4. Interconnecting wiring malfunction.

5. Ignition Module malfunction.

1. Gas combination valve off or inoperative.

2. Manual gas valve closed.

Sparks, but gas does not ignite, display lit.

Gas pilot ignites, but will not maintain flame.

Gas burners ignite, but will not maintain flame.

Excessive or low heat.

3. Gas supply off, or insufficient gas pressure.

4. High limit thermostat open.

5. Interconnecting wiring malfunction.

6. Ignition Module malfunction.

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.

1. Gas pressure incorrect.

2. Gas orifice obstructed or incorrect.

3. Burner malfunction.

4. Gas pilot malfunction.

1. Incorrect temperature offset selected.

2. Temperature probe malfunction.

3. Gas pressure incorrect.

4. Gas orifice obstructed or incorrect.

Intermittent problems.

5. Cooking control malfunction.

6. Interface board malfunction.

1. High ambient temperatures.

2. Wiring connections loose.

Page 51 of 56 F35660 Rev. A (0717)

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

Symptoms Possible Causes

1. Power switch off or malfunction.

No power to cooking control (display not lit), fryer does not heat.

High limit thermostat shutting off gas burners.

Excessive time to melt shortening (more than 45 minutes).

SOLID STATE CONTROL

2. Main circuit breaker off.

3. Transformer inoperative.

4. Interconnecting wiring malfunction.

1. Shortening level below minimum fill line.

2. Probe malfunction.

3. Cooking control malfunction.

4. Interface board malfunction.

5. High limit thermostat malfunction.

1. Melt cycle timing incorrect.

2. Insufficient gas pressure.

3. Gas orifice plugged or obstructed.

4. Probe malfunction.

5. Cooking control malfunction.

6. Interface board malfunction.

The following alarms take precedence over any other controller mode or function.

Alarms Description

If an open probe is detected, the heat demand (heat on) and basket lift outputs are disabled.

Open Probe

Shorted Probe

Hi Temperature

Ignition Status

Any cooking in progress is canceled, and all operator buttons are disabled. The display shows "Prob," and the electronic alarm will sound continuously.

NOTE: A temperature of less than 40°F is an open probe equivalent.

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 shorted probe equivalent.

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 "HI," and the electronic alarm will sound continuously. Normal fryer operation resumes when the temperature drops below the high temperature alarm level.

If this input is not active (24VAC = active), the display will show "FlrE OUt" (for gas pilot out). If the input remains inactive for greater than 90 seconds, the display will show "Ign LoC" (for ignition lockout), the electronic alarm will sound continuously, and the controller will be disabled (all outputs, including heat demand off) until power is cycled.

F35660 Rev. A (0717) Page 52 of 56

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. The display will show "drn" (drain).

Drain Valve Interlock

(DVI)

When the drain valve is closed, the DVI switch contacts close, and the 24VAC input to the controller is restored. The heat demand (heat on) and all operator buttons will remain disabled, and the display will show "FiLL TanH" (fill tank).

To resume operation, complete the filtering sequence as follows: Press and hold Filter key for 3 seconds to start the pump motor. When all shortening is returned to the fry tank, press Filter key to stop pump motor. The display alternates in a continuous loop "TanH FULL," "Hlt TEEP" (tank full, hit temp). Press the Temp key. Fryer is now ready for operation.

COMPUTER CONTROL

The following alarms take precedence over any other controller mode or function.

Alarms Description

If an open probe is detected, the heat demand (heat on) and basket lift outputs are disabled.

Open Probe

Shorted Probe

Any cooking in progress is canceled, and all operator buttons are disabled. The display shows "PROBE OPEN," and the electronic alarm will sound continuously.

NOTE: A temperature of less than 40°F is an open probe equivalent.

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 "PROBE SHORT," and the electronic alarm will sound continuously.

Hi Temperature

Ignition Status

Drain Valve Interlock

(DVI)

NOTE: A temperature of 460°F or greater is a shorted probe equivalent.

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 temperature alarm level.

If this input is not active (24VAC = active), the display will show "PILOT OUT" (for gas pilot out). If the input remains inactive for greater than 90 seconds, the display will show "IGNITION LOCKOUT," the electronic alarm will sound continuously, and the controller will be disabled (all output, including heat demand off) until power is cycled.

When drain valve is opened, the DVI switch contact 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. The display will show "DRAINING FILTER." If the filter prompt is active (flashing), "DRAINING FILTER" is displayed; if the dispose prompt is active (flashing), "DRAINING DISPOSE" is displayed.

To resume operation, complete the filtering sequence as follows: Press and hold Filter key for 3 seconds to start the pump motor. When all shortening is returned to the fry tank, press Filter key to stop te pump motor. Display shows "TNK FULL HIT TEMP." Press the Oil Temp key. Fryer is now ready for operation.

Page 53 of 56 F35660 Rev. A (0717)

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

SOLID STATE OR COMPUTER CONTROL HARNESS PIN-OUTS

Pin No.

Input

Pin No.

Output

E1-1 24VAC Hot E1-8 24VDC (+) Heat Demand

E1-2

24VAC Neutral

E1-9 24VDC (+) Filter

E1-3 Probe E1-10 24VDC (+) Left Basket Lift

E1-4 Probe E1-11 24VDC (+) Right Basket Lift

E1-5 Drain Valve Interlock (24VAC) N.O. E1-12 No connection

E1-6 Ignition Status (24VAC) — —

E1-7 Relay DC (-) Common — —

Connected to ground internally.

NOTES:

Input to cooking control.

Output to Interface Control Board.

INTERFACE CONTROL BOARD PIN-OUTS

Pin. No. Input Pin No. Output

P1 24VDC Left Basket Lift P6

P2 24VDC Right Basket Lift P7 System Ground

P3 24VDC Heat Demand Control P8

P4 Common Control (-) P9

P5 Heat Demand Triac (24VAC) P12 24VAC R1 pump motor relay

P10

Relay Contacts (24VAC)

P11 24VAC K3 Filter Relay

Relays connected internally.

NOTES:

To M1 terminal on gas valve (main).

To basket lift relay coils.

Heat Demand Triac (24VAC)

24VAC Left Basket Lift

24VAC Right Basket Lift

FRYMATE (DUMP STATION) WITH OPTIONAL HEATER

Symptom Possible Causes

1. Unplugged.

No heat.

F35660 Rev. A (0717) Page 54 of 56

2. Power switch off or inoperative.

3. Main circuit breaker off or open.

4. Malfunctioning heater assembly.

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

KLEENSCREEN FILTERING SYSTEM

Symptom Possible Causes

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

Shortening not filtering, pump motor is on.

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.

1. Filter screen plugged.

Shortening not discarding, pump motor is on.

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

2. Clog in filter system lines.

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.

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.

Page 55 of 56 F35660 Rev. A (0717)

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

Symptom Possible Causes

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

2. Discard handle (white) not extended.

Pump motor is not running to discard shortening, display is lit.

3. R1 pump motor relay malfunction.

4. Cooking control malfunction.

5. Interface board malfunction.

6. Interconnecting wiring malfunction.

7. Pump motor inoperative.

F35660 Rev. A (0717) Page 56 of 56

Vulcan 1GR85M Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual