Frymaster LOV Technical Information Manual

LOV Fryer Technical Information Manual

Description Page

1.1 ATO (Automatic Top-Off) Service Procedures……………………….2

1.1.1 ATO (Automatic Top-Off) Troubleshooting………………………….. 2

1.1.2 ATO (Automatic Top-Off) Board #1 Pin Positions/Harnesses……... 4

1.1.3 ATO (Automatic Top-Off) Board #2 Pin Positions/Harnesses……... 5

1.1.4 Replacing the ATO (Automatic Top-Off) Board/Transformer……... 6

1.1.5 Replacing the ATO Pump/Solenoid………………………………….. 6

1.2 MIB (Manual Interface Board) Service Procedures………………… 6

1.2.1 Manually Draining……………………………………………………… 8

1.2.2 MIB (Manual Interface Board) Troubleshooting…………………….. 8

1.2.3 MIB (Manual Interface Board) Pin Positions/Harnesses…………. ...10

1.2.4 MIB (Manual Interface Board) Display Diagnostics………………….12

1.2.5 MIB (Manual Interface Board) Auto Filtration Failure Scenarios…...14

1.2.6 Replacing an MIB Board………………………………………………. 14

1.3 AIF (Automatic Intermittent Filtration) Service Procedures………… 15

1.3.1 AIF (Automatic Intermittent Filtration) Troubleshooting…………….. 15

1.3.2 AIF (Automatic Intermittent Filtration) Board #1 Pin Positions......…16

1.3.3 AIF (Automatic Intermittent Filtration) Board #2Pin Positions………17

1.3.4 Replacing an AIF (Automatic Intermittent Filtration) Board…………18

1.3.5 Replacing an Actuator………………………………………………….. 18

1.4 M2007 Computer Filtration Service Procedures…………………….. 19

1.4.1 M2007 Computer Troubleshooting…………………………………….19

1.4.2 M2007 Useful Codes…………………………………………………… 22

1.4.3 Get Mgr Flowchart……………………………………………………… 22

1.4.4 M2007 Menu Summary Tree..………………………………………… 24

1.4.5 M2007 Pin Positions/Harnesses………………………………………. 26

1.5 Loading and Updating Software………………………………………. 27

1.5.1 Loading Software from SD card to MIB and AIF Boards…………… 27

1.5.2 Loading Software from SD card to M2007 Computer………………. 29

1.6 Tech Mode………………………………………………………………. 31

1.7 Fryer Setup Mode………………………………………………………. 32

1.8 RTI Service Issues……………………………………………………… 34

1.8.1 RTI MIB Tests…………………………………………………………… 34

1.8.2 RTI LOV Wiring…………………………………………………………. 35

1.8.3 RTI LOV Test Quick Reference……………………………………….. 36

1.9 Wiring Diagrams………………………………………………………… 37

1.9.1 LOV Electric Wiring Diagram with Thermal Sensor ……………….. 37

1.9.2 LOV Electric Wiring Diagram with RTD………………………………. 38

1.9.3 LOV Gas Wiring Diagram with Thermal Sensor…………………….. 39

1.9.4 LOV Gas Wiring Diagram with RTD………………………………….. 40 rev. 12.7.2007

DECEMBER 2007

819xxxx

1.1 ATO (Automatic Top-off) Service Procedures

The automatic top-off system is activated when the oil level falls below a sensor in the rear of the frypot. The signal is sent to the ATO board to engage the solenoid to the frypot and turn on the ATO pump. The pump draws oil from the JIB (Jug In Box) to a port in the rear of the frypot. Once the oil level has satisfied the sensor, the pump and solenoid turn off.

The ATO board is located inside the box, behind the JIB (see Figure 1). The power for the ATO board in electric fryers is supplied from the right hand component box. On gas fryers the power is supplied from the transformer box in the rear of the fryer. The power passes through the transformer inside the ATO box to the board. On the left side of the ATO box is a power switch, which controls the flow of power between the component/transformer box and the ATO board.

Figure 1 Close up of switch located on the left side of the JIB auto top off box.

1.1.1 ATO (Automatic Top-off) Troubleshooting

Problem Probable Causes Corrective Action

A. Verify that the auto top off

power switch is switched on.

The yellow JIB low

light won’t illuminate.

One vat tops off but

other vats fail to top

off.

Incorrect vat tops

off.

A. Auto top off power switch is off. B. Power in the component box is

not present.

C. Failed transformer. D. Loose wire connection

A. Failed solenoid B. Loose wire connection.

A. Wired incorrectly. B. Flexlines connected to wrong vat.

The switch is located behind the JIB on the left side of the auto top off control box.

B. Ensure power is present in the

component box.

C. If power is present in

component box, check the transformer for correct voltage.

D. Ensure the yellow LED is

securely attached to plug J6 on the ATO board.

A. Check power to the pump. If

the pump is hot, the solenoid has probably failed.

B. Ensure all wiring harnesses are

securely connected to ATO board and solenoids.

A. Ensure wires are wired

correctly.

B. Switch flexlines to correct vat.

Problem Probable Causes Corrective Action

A. Verify that the auto top off

power switch is switched on. The switch is located behind the JIB on the left side of the auto top off control box.

B. Check to see that fryer is

heating. Fryer temperature must be at least 300°F (149°C). Check probe resistance. If probe is bad, replace the probe.

C. Ensure oil viscosity is thin

enough to pump.

D. Power to the ATO board has

been cut off. Restore power to the board and cycle all computers off and on to readdress system.

E. Check solenoid to see if

functioning properly.

F. If the solenoid is working,

ensure that the screws on the bottom of the pump are not too tight. Loosen the screws. If loosening the screws doesn’t fix the problem, replace the pump.

G. Ensure transformer in ATO box

is functioning properly. Check power from transformer to ATO board. Ensure all harnesses are plugged securely into place.

H. Check for proper voltages using

the pin position chart found on page 4. If ATO found defective, replace ATO board.

Frypots won’t top

A. Auto top off power switch is off. B. Probe temperature lower than

setpoint.

C. Oil viscosity too thick D. ATO board power loss E. Failed solenoid.

off.

F. ATO pump failed or over

tightened.

G. Failed transformer/harness. H. Failed ATO board.

1.1.2 ATO (Automatic Top-Off) Board #1 Pin Positions (Current Prod with Thermal Sensors)

Connector From/To Harness # Pin # Function Voltage Wire Color

1 Output DV - Vat #1 2 Output FV - Vat #1

Solenoids

Top Off Pump

J3 Transformer 8074553

J4 - Vat #3 J5 - Vat #2 J6 - Vat #1

J7 Orange LED 8074555

J10 AIF J5 8074546

JIB Reset Switch

Solenoids

Top Off Pump & JIB

Reset Switch

O/Flow Sensor & Fill

Sensor

Network Resistor

(pins 2 & 3)

or to next ATO Board

(4 & 5 vat units)

8074572 x1 (FV) 8074572 x2 (DV)

8074627

8074572 x1 (FV) 8074572 x2 (DV)

8074627

8074569 - Vat #1 8074567 - Vat #2 8074548 - Vat #3

8074570 - Vat #1 8074568 - Vat #2 8074549 - Vat #3

8074552

3 Output DV - Vat #2 4 Output FV - Vat #2 5 Output DV - Vat #3 6 Output FV - Vat #3 7 Top Off Pump Black 8 JIB Low Reset

9 24VAC DV - Vat #1 10 24VAC FV - Vat #1 11 24VAC DV - Vat #2 12 24VAC FV - Vat #2 13 24VAC DV - Vat #3 14 24VAC FV - Vat #3 15 Ground Red 16 Ground

1 24VAC Ret Orange

2 24VAC

5 12VAC Ret Red

6 12VAC

1 FV – SW Out Black

2 FV – Sw In White

3 DV – Sw Out Red

4 DV – Sw In

1 16VDC Black

2 16VDC Ret

3 Ground

4 RB7/DATA

5 RB6/CLOCK

1 Ground Black

2 CAN Lo Red

3 CAN Hi White

4 5VDC+ 5VDC Black

5 24VDC 24VDC Red

6 Ground White

1 Ground Black

2 CAN Lo Red

3 CAN Hi White

4 5VDC+ 5VDC Black

5 24VDC 24VDC Red

6 Ground White

Ground Orange

16VDC

24VAC Orange

16VDC

24VAC

12VAC

16VDC

Black

Red

Blue

Brown

Green

Red

1.1.3 ATO (Automatic Top-Off) Board #2 Pin Positions (Current Production with RTD)

Connector From/To Harness # Pin # Function Voltage Wire Color

1 Output DV - Vat #1

2 Output FV - Vat #1

Solenoids

Top Off Pump

J4 (Rear) / J5 (Front)

J3 - Vat #3 J2 - Vat #2 J1 - Vat #1

J6 Orange LED 8074555

J10

J9 AIF J5 8074546

JIB Reset Switch

Solenoids

Top Off Pump & JIB

Low Reset Switch

Transformer 8074553

ATO RTD

Network Resistor

(pins 2 & 3)

or to next ATO Board

(4 & 5 vat units)

8074572 x1 (FV)

8074572 x2 (DV)

8074627

8074572 x1 (FV)

8074572 x2 (DV)

8074627

8074655 - Vat #1 8074654 - Vat #2 8074621 - Vat #3

8074552

3 Output DV - Vat #2

4 Output FV - Vat #2

5 Output DV - Vat #3

6 Output FV - Vat #3

7 Top Off Pump Black

8 JIB Low Reset

9 24VAC DV - Vat #1 10 24VAC FV - Vat #1 11 24VAC DV - Vat #2 12 24VAC FV - Vat #2 13 24VAC DV - Vat #3 14 24VAC FV - Vat #3 15 Ground Red 16 Ground

1 24VAC Ret Orange

2 24VAC

5 12VAC Ret Red

6 12VAC

1 DV - Probe Ground White

2 DV - Probe Red

3 FV - Probe Ground White

4 FV - Probe

1 16VDC Black

2 16VDC Ret

3 Ground

4 RB7/DATA

5 RB6/CLOCK

1 Ground Black

2 CAN Lo Red

3 CAN Hi White

4 5VDC+ 5VDC Black

5 24VDC 24VDC Red

6 Ground White

1 Ground Black

2 CAN Lo Red

3 CAN Hi White

4 5VDC+ 5VDC Black

5 24VDC 24VDC Red

6 Ground White

Ground Orange

16VDC

24VAC Orange

16VDC

24VAC

12VAC

Ohm

16VDC

Black

Red

Blue

Brown

Red

1.1.4 Replacing the ATO board or Transformer

Disconnect the fryer from the electrical power supply. Locate the ATO box (see Figure 1 on page 12), behind the JIB (Jug In Box). Remove the cover to expose the transformer and ATO board (see Figure 2). Mark and unplug any wires or harnesses. Replace the defective component and reattach all wires or harnesses. Replace the cover. Once replaced, reconnect the power. Power cycle all computers after power has been restored to the

Figure 2

ATO board.

1.1.5 Replacing the ATO Pump or Solenoid

Disconnect the fryer from the electrical power supply. Locate the ATO pump and solenoid tree (see Figure 3), behind the ATO box. Mark and unplug any wires or harnesses. Replace the defective component and reattach all wires or harnesses. Once replaced, reconnect the power.

Figure 3

1.2 MIB (Manual Interface Board) Service Procedures

The MIB (Manual Interface Board) oversees and controls filtration. It receives and sends data over the CAN (Controller Area Network) to and from various sensors and computers. It activates the filtration cycle; controlling when actuators should open and close.

The MIB controller is located inside the left cabinet (see Figure 4). In normal operation a cover hides the MIB controls and the LED display is visible. The cover is held in place with three torx screws. In normal operation, an “A” is displayed for automatic mode. The MIB control board is

useful for diagnostic purposes. It allows manual operation of both the actuators and filter pump without using the M2007 computer.

Mode Display

Reset Switch Drain Switch

Return Switch

Figure 4: MIB controller cover.

Vat Selector

Switch

Manual /Auto

Switch

Figure 5

Buttons and LED’s

Manual – This button is used to toggle between auto and manual filtration mode. A corresponding LED is lit when in Manual mode. When pressed, a message will be sent to all vats, indicating the mode has changed.

The following buttons are inoperable in auto mode: Select - This button is used to scroll through available vats, choosing one to be manually filtered. Drain – This button is used to open and close the drain on the vat indicated on the display.

When the button is pressed and the manual board is waiting for a response from the AIF board, the corresponding LED will blink slowly. Once a response is received the LED will be illuminated if the drain is open or extinguished if the drain is closed. If a message was not received from the AIF board, it times out and the LED will blink rapidly.

Return – This button is used to open and close the return valve on the vat indicated on the display. It also turns on and off the pump. When the button is pressed and the manual board is waiting for a response from the AIF board, the corresponding LED will blink slowly. Once a response is received, the LED will be illuminated if the return is open or extinguished if the return is closed. If a message is not received from the AIF board, it times out and the LED will blink rapidly. The pump is turned off first before closing the return valve or the valve will open first before turning on the pump.

1.2.1 Manually Draining, Refilling or Filtering using the MIB board

Press the manual/auto switch to set to manual. The LED on the manual key will illuminate and a vat number is displayed (see Figure 6).

Press the vat selector switch to change vats (see Figure 7).

Pressing the drain or return switch illuminates and activates the drain or return valve for the vat indicated. Pressing both allows filtration (see Figure 8).

Pressing the manual/auto switch will return to automatic mode.

Figure 6

Figure 7

Figure 8

1.2.2 MIB (Manual Interface Board) Troubleshooting

Problem Probable Causes Corrective Action

A. Ensure MIB board is in “A”

automatic mode. Press the reset button.

B. Re move and replace cover and see if

filtration will start.

C. Replace filter relay with part number

8074482 24VDC relay. See MIB display diagnostics on page 12 for explanation.

Check the left transformer in left component box. Should read 24VDC. If not replace transformer. Press the reset switch on the top right corner of the MIB board. This will reinitialize the CAN system. This reset takes about 20 seconds per vat. It could exceed one minute before returning to “A”.

A. Ensure the CAN bus system is

terminated at BOTH ENDS (on the M2007 connector J6 and on the ATO board connector J9) with a resistor equipped 6-pin connector. The resistor can be shorted. If so, remove the shrink wrap and ensure that the resistor leads are not touching.

B. Unplug and reseat all wiring harnesses

in CAN system. Check resistance

etween pins 2 and 3 on the CAN network connectors. If checking with resistor at the end reading should be 120 ohms.

Auto filtration won’t

start.

MIB display shows

something other

than an “A” or vat

number.

No power present at

the MIB board

MIB error will not

clear.

MIB indicates more

or less vats than

fryer has.

A. Check that MIB board is not

in manual mode.

B. Check to see that the MIB

cover is not damaged and depressing the buttons.

C. Filter relay has failed.

An error has occurred.

Transformer has failed in left component box.

Power surge or other electrical problem.

A. Network is not terminated

correctly.

B. Wiring harnesses are loose

or damaged.

Problem Probable Causes Corrective Action

A. Ensure the CAN bus system is

terminated at BOTH ENDS (on the M2007 connector J6 and on the ATO board connector J10) with a resistor equipped 6-pin connector. The resistor can be shorted. If so, remove the shrink wrap and ensure that the resistor leads are not touching.

B. Ensure all 6-pin CAN connectors are

tight between the M2007 (J6 and J7), MIB (J1 and J2), AIF (J4 and J5) and ATO (J10) boards.

MIB board

alternating “N” and

“r”.

Network error on the CAN bus communication.

C. Check continuity between each color

wire on the CAN connectors into J7 on the far right computer and J10 on back of the ATO board (black to black, white to white, and red to red), and ensure there is no continuity between different color wires (black to red, red to white, and white to black).

D. Ensure black computer locator wires

are connected from ground to correct pin position (see drawing 8051656 page 34 and 35).

E. Ensure all boards have the corner

ground wire attached and tightened.

1.2.3 MIB (Manual Interface Board) Pin Positions and Harnesses

Connector From/To Harness # Pin # Function Voltage Wire Color

1 Ground Black 2 CAN Lo Red

J1 M2007 J7 8074546

J2 AIF J4 8074547

J3 SD Card

RTI - JIB Fill Switch

Reset Switch

Transformer

Filter Relay

Blue LED

8074649

Pan Switch

RTI - Pump &

Solenoids

3 CAN Hi White 4 5 6 1 Ground Black 2 CAN Lo Red 3 CAN Hi White 4 5VDC+ 5VDC Black 5 24VDC 24VDC Red 6 Ground White

1 Momentary Switch - Out 5VDC Red 2 Momentary Switch - In 5VDC Black 3 Ground Red 4 Reset Green 1 24VAC Black 2 24VAC Ret 3 Pump Motor Red 4 Pump Motor 5 Blue LED + Black 6 Blue LED 7 8

9 10 11 Pan Sw + Black 12 Pan Sw 13 Ground 14 Ground 15 16

1 From RTI transformer 24VAC Black

2 Common White

3 To RTI "Add Pump" Relay 24VAC Green

4 To Waste Solenoid - 3 Way 24VAC Brown

6 To Fill Solenoid - 3 Way

7 Ground - Fill Solenoid

From RTI "Waste Tank Full

Sensor" Test Pins 1 to 8

24VAC

24VDC

24VAC

0VDC – 5VDC –

Not Full

Full

White

Green

White

Red

Black Black

Red

J7 From RTI Box

1 From RTI transformer 24VAC Black

2 Common White

4 To Waste Solenoid - 3 Way 24VAC Brown

6 RTI JIB Valve Fill Solenoid

7 Ground - Fill Solenoid

24VAC

Green

0VDC – From RTI "Waste Tank Full Sensor" Test Pins 1 to 8

Full 5VDC – Not Full Red

1.2.4 MIB (Manual Interface Board) Display Diagnostics

DISPLAY LEDS EXPLANATION

Drain

Vat # Drain led on Drain valve on vat # is open Vat # Drain led off Drain valve on vat # is closed Vat # Drain led slow blink Drain valve on vat # is opening or closing Vat # alternating with O Drain led fast blink Problem opening drain valve on vat# Vat # alternating with C Drain led fast blink Problem closing drain valve on vat# Vat # alternating with d Drain led fast blink Problem with drain on vat#. (i.e. possible plugged

drain)

Return

Vat # Return led on Return valve on vat # is open Vat # Return led off Return valve on vat # is closed Vat # Return led slow blink Return valve on vat # is opening or closing Vat # alternating with O Return led fast blink Problem opening return valve on vat# Vat # alternating with C Return led fast blink Problem closing return valve on vat#

Network

Vat # alternating with n Drain led fast blink Network timeout waiting for response. Could be

on drain opening or on drain closing.

Vat # alternating with n Return led fast blink Network timeout waiting for response. Could be

on return opening or on return closing.

An “r” alternating with an “n” Network timeout waiting for a response on a reset

command.

An “F” alternating with an “n” Network timeout waiting for a success or failure

message during auto filtering.

Initial State, Configuring the system, and resetting

U The state of the battery is unknown. The manual

board is waiting for an INIT_CONFIG message from a cooking computer. Once the message is received the manual board will start the process of determining which fryers have split or full vats.

L An L will be displayed while the manual board is

contacting the cooking computers for the initial configuration of the system.

An “r” An “r” is displayed to indicate that the system is

in the process of resetting a vat.

Miscellaneous

Vat # alternating with an “E” The actuator circuit has an issue. Check th at the

actuator is plugged in.

Vat # alternating with an “R” The vat is trying to close the corresponding drain

and return valves. A Manual LED off The system is in auto filtration mode. Vat # LED fast blinking

There will also be a fast blinking LED corresponding to the

problem valve. Vat # Manual LED on The system is in manual mode. P This will only be displayed in auto filtration

The system can not go into auto filtration mode because there is a problem closing a valve on one of the vats.

mode. It indicates that the pan is not in the system. Any auto filtration messages received at this time are ignored.

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