Vulcan ERC225F Service Manual

SERVICE MANUAL

SUPPLEMENT

KLEENSCREEN SERIES ELECTRI C

FRYER BATTERY

MODEL ML

ERD40F 126905 ERD50F 126906 ERD225F 126907 ERD85F 126908 ERC40F 126909 ERC50F 126910 ERC225F 126911 ERC85F 126912

2ERD40F SHOWN

This Service Manual Supplement should be used in addition to F24577 "FLOOR MODEL ELECTRIC FRYERS" for Service Information related to the Fryer and F24599 "MOBILE FILT E RS " f or Service Information related to the pump.

- NOTICE This Manual is prepared for th e use of trained Vulcan Service Technicians and should not be used by those not properly qu alif ied. If yo u have attend ed a Vulcan Service School for this product, you may be qualified to perform all the procedures described in this man ual.

Thi s manu al i s no t i nten ded to be al l en co mpassi ng . I f you have not attende d a Vulcan S ervic e School for this produ ct , you should read, in i ts en ti rety, t he re p a i r p r oced ure yo u w ish to perfo rm to determine if you have the necessary tools, instruments and skills required to perform the procedure. Procedures for which you do not have th e necessary tools, instruments and skills should be performed b y a trained Vu lcan Service Technician .

Reproduction or other use of this Manual, without the express written consent of Vulcan, is prohibited.

A product of VULCAN-HART LOUISVILLE , KY 40201-0696

F24696 (May 2001)

ER SERIES FRYER SERVICE MANUAL SUPPLEMENT

TABLE OF CONTENTS

GENERAL............................................................................. 3

Introduction ........................................................................ 3

Description..................................................................... 3

Model Designations .............................................................. 3

Kleenscreen Filteri ng S y stem ....................................................... 4

Information Sources.............................................................. 4

Installation......................................................................... 4

Operation.......................................................................... 4

Cleaning .......................................................................... 4

Maintenance ....................................................................... 4

Specifications ...................................................................... 5

Electrical ...................................................................... 5

REMOVAL AND REPLACEMENT OF PARTS ................................................. 6

Covers and Panels ................................................................... 6

Pump and Motor .................................................................... 6

Filter Valve and Discard Val ve Switches .................................................. 7

Heater Contactors ................................................................... 7

SERVICE PROCEDURES AND ADJUSTMENTS ............................................... 8

Computer Cont rol Board Diagnostics ..................................................... 8

ELECTRICAL OPERATION ............................................................... 9

Sequence of O per ation ............................................................... 9

Solid State Fryer Control, Full Vat ................................................... 9

Computer Control, Full Vat........................................................ 11

Kleenscreen Filteri ng S y stem ...................................................... 12

Discard of Used Oil ............................................................. 13

Component Func tion ................................................................ 14

Component Locat ion ................................................................ 15

Schematic Diagrams ................................................................ 16

Solid State Control and K leenscreen Filter, Full Vat ..................................... 16

Computer Control, Full Vat........................................................ 18

Computer Control, Split Vat ....................................................... 19

Kleenscreen Filteri ng S y stem, Computer Control ....................................... 20

Heater Circuit, Solid State Controls, Full Vat .......................................... 21

Heater Circuit, Solid State Controls, Split Vat.......................................... 22

Basket Lift Circuit, Solid State Controls .............................................. 23

Wiring Diagrams ................................................................... 24

Kleenscreen Filteri ng S y stem ...................................................... 24

Wiring Diagr am Index ............................................................ 25

TROUBLESHOOTING .................................................................. 50

Solid State Control.................................................................. 50

Computer Control .................................................................. 51

Computer Control Harness Pin-Outs Chart................................................ 52

Kleenscreen Filteri ng S y stem .......................................................... 53

CONDENSED SPARE PARTS LIST ........................................................ 56

F24696 (May 2001) Page 2 of 56

ER SERIES FRYER SERVICE MANUAL SUPPLEMENT - GENERAL

INTRODUCTION

GENERAL

Description

This Service Manual Supplem ent cover s specific servi ce infor mation only related t o the Vulcan Kleenscreen filter models li sted on the front c over.

The fryer battery utilizes many of the same controls and components as the Vulcan ERD series (solid state control ) and ERC series (comput er c ontrol) fryers.

Kleenscreen fryer batteries are available i n a minimum of two and a maximum of six fryer sections. The fryer size of each section is identical.

An ERO series Fry mate (dum p station) can also be included as one or more of t he sect ions.

Models, Features and Options

FEATURES OPTIONS

MODEL

2ERD40F 2ERD50F

FRYER WIDTH

(INCHES)

31 40 Full Solid State Single or Dual 7.5 or 15 31 50 Full Solid State Single or Dual 7.5 or 15

FRYING COMPOUND PER FRYER

(POUNDS)

Model Desi gnations

VAT

TYPE

CONTROL

TYPE

BASKET LIFTS

AUTOMATIC

TIMERS

(MIN)

2ERD225F

2ERD85F 2ERC40F 2ERC50F

2ERC225F

2ERC85F

ER015 (Frymate) ER021 (Frymate)

NOTES

(25 each v at)

Split Solid State

Single

(each v at) 42 85 Full Solid State Single or Dual 7.5 or 15 31 40 Full Computer Single or Dual 7.5 or 15 31 50 Full Computer Single or Dual 7.5 or 15

(25 each v at)

Split Computer

Single

(each v at) 42 85 Full Computer Single or Dual 7.5 or 15

15 1/2

1. F or eac h additional fryer section, add 15 1/2 inc hes to the width.

2. F or eac h additional fryer section, add 21 inches to t he width.

F24696 (May 2001)Page 3 of 56

7.5 or 15

ER SERIES FRYER SERVICE MANUAL SUPPLEMENT - GENERAL

Kleenscreen Filtering S ystem

The new "Kleenscreen" filt er ing system has been integr ated into the ER S er ies fryer bat tery. The filt er is housed in a pull -out drawer assembly at t he base of the fr y er . The filteri ng c omponents in the dr awer i nc lude a stainless steel filter t ank, crumb- c atch basket and fine mesh screen. With t he fil ter drawer closed, a self-seating retur n oil line provides the pat h to return the filtered oil t o the fry t ank .

This system is designed to prov ide a thorough and easy met hod for f iltering fryer oil. Some of the benefits include:

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

• Paperless filteri ng system.

• Easy to clean and low maintenance.

Information Sources

Refer to the appropriate manual below for related information.

ER SERIES

MANUAL

Service F24577 F24599 Parts F31007 - Installation and

Operation Filtration Syst em

User’s Guide F24696 Use the Servic e information found in thi s

ELECTRIC

FRYERS

F30981 - -

- - F31150

Serv ice Manual Supplement. The Supplement cover s additional S er vic e Information specific to the Kleenscreen fryer and fil tering system.

PUMP

INFORMATION

KLEEN

SCREEN

INSTALLATION

Refer to the Installation and Operation Manual for specif ic installation i nstr uc tions.

OPERATION

Refer to the Installation and Operation Manual for specif ic operating instructions.

CLEANING

Refer to the Installation and Operation Manual for specif ic cleani ng instructions.

MAINTENANCE

Refer to the Installation and Operation Manual for specif ic mai ntenance instructions.

F24696 (May 2001) Page 4 of 56

Electrical

ER SERIES FRYER SERVICE MANUAL SUPPLEMENT - GENERAL

SPECIFICATIONS

Separate electrical c onnec tions are required for each

section of the battery.

• 208VAC, 240VAC or 480VA C ( 3 phase, 60HZ) to power the heating elements.

• On 208VAC and 240VAC models, step down transformer(s) provide power for the fryer c ontrols, basket lift( s)

if installed, and Kleenscreen filtering controls.

• On 480VAC models, a 120VAC connection is required for each fr y er sect ion.

• All models require a separate 120V A C c onnec tion for the pump motor.

NOTE:

Pump m otor for Kleenscreen filteri ng system draws 5.0 amps.

AMPS - EACH FRYER SECTION

(3 PHASE/ 60HZ)

MODELKWPER FRYER

SECTION

PER LINE

RECOMMENDED

CIRCUIT

PROTECTION

208V 240V 480V 208V 240V 480V

14 39 34 17 50 45 25

ERD40F

17 47 41 20 60 50 30 14 39 34 17 50 45 25

ERD50F

17 47 41 20 60 50 30

ERD225F

ERD85F

ERC40F

ERC50F

ERC225F

ERC85F NOTES

21 58 51 25 80 70 35 14 39 34 17 50 45 25 17 47 41 20 60 50 30 21 58 51 25 80 70 35 24 67 58 29 90 80 40 14 39 34 17 50 45 25 17 47 41 20 60 50 30 14 39 34 17 50 45 25 17 47 41 20 60 50 30 21 58 51 25 80 70 35 14 39 34 17 50 45 25 17 47 41 20 60 50 30 21 58 51 25 80 70 35 24 67 58 29 90 80 40

1. Amperage values in the table are nomi nal. Tolerance is

+5/-10%.

2. Complied in accordance with National Elec tric Code, ANSI/NFPA 70, latest edition.

3. 14kw is standard on all f r y er s except 85 lb. models which are 24kw.

F24696 (May 2001)Page 5 of 56

ER SERIES FRYER SERVICE MANUAL SUPPLEMENT - REMOVAL AND REPLACEMENT OF PARTS

REMOVAL AND REPLACEMENT OF PARTS

COVERS AND PANELS

WARNING:

POWER TO T HE MACHINE AT THE MAIN CIRCUIT BOX. THERE ARE SEVERAL SEPARATE CIRCUITS. B E S URE A LL A RE DISCONNECTED. PLACE A TAG ON THE CIRCUIT B OX(ES) INDICATI NG THE CIRCUIT IS BEING SE RV ICED.

Front Control Panel

1. O pen the cabinet door t o the fryer section being serviced.

2. Remove the screws along the bottom lip and along the top of the of the control panel.

3. Work t he panel loose at each end and lift off.

4. Reverse procedure to install.

Basket lift Co vers

1. Loosen bolt at the top of each basket li ft hanger and lift the basket hangers from the support r od.

2. Remove the screws that secure the lower cover at the rear of the fr y er section.

3. Remove the screws along each side of the cover.

4. Lift t he c over and pl ac e to the side.

5. Reverse procedure to install.

DISCONNECT THE ELECTRICAL

PUMP A ND MOTOR

WARNING:

POWER TO T HE MACHINE AT THE MAIN CIRCUIT BOX. THERE ARE SEVERAL SEPARATE CIRCUITS. B E S URE A LL A RE DISCONNECTED. PLACE A TAG ON THE CIRCUIT B OX(ES) INDICATI NG THE CIRCUIT IS BEING SE RV ICED.

NOTE

locati on of pump motor.

1. O pen the right side cabinet door of the filter section.

2. Pull the filt er dr awer out , remove the filter tank assembly and push the tank support ar ms back underneath the fryer.

3. Disconnect the electrical c onnec tion to the motor.

NOTE

removal of the pump assembly. If access to the back of t he fryer is available, i t may be easier t o remove the pump from the rear.

4. Separ ate the swivel hose connection on the r ight side (intak e) of the pum p.

5. Separ ate the swivel hose connection on the left side (discharge) of the pump.

6. Remove the mounti ng bolts from the mot or .

7. Remove the motor, pump and piping assembly. A. If replacing the pump and motor, remove

8. Reverse procedure to install.

NOTE

gromm ets are install ed under the motor mounting plate.

DISCONNECT THE ELECTRICAL

: Refer to component location pi cture 6100 for

: The rem aining steps are writt en for f r ont

the exi sting piping assemblies and reuse.

: Ensure the rubber vibration pad or the

F24696 (May 2001) Page 6 of 56

ER SERIES FRYER SERVICE MANUAL SUPPLEMENT - REMOVAL AND REPLACEMENT OF PARTS

FILTER VALVE AND DISCAR D

VALVE SWITCHES

WARNING:

POWER TO T HE MACHINE AT THE MAIN CIRCUIT BOX. THERE ARE SEVERAL SEPARATE CIRCUITS. B E S URE A LL A RE DISCONNECTED. PLACE A TAG ON THE CIRCUIT B OX(ES) INDICATI NG THE CIRCUIT IS BEING SE RV ICED.

1. O pen the cabinet door t o the fryer section being serviced.

2. Disconnect lead wire connector from the appropriate switc h.

3. Remove switc h mounting screws.

4. Reverse procedure to install.

NOTE:

no provision for adjustment.

DISCONNECT THE ELECTRICAL

Switch m ounting is a f ixed loc ation and has

HEATER CONTACTORS

WARNING:

POWER TO T HE MACHINE AT THE MAIN CIRCUIT BOX. THERE ARE SEVERAL SEPARATE CIRCUITS. B E S URE A LL A RE DISCONNECTED. PLACE A TAG ON THE CIRCUIT B OX(ES) INDICATI NG THE CIRCUIT IS BEING SE RV ICED.

1. Remove the front c ontrol panel as outlined under "FRONT CONTROL PANEL" in "COVERS AND PANELS".

2. Remove the combination mount ing and cov er panel fr om the control area.

3. Cont ac tors are now accessible.

NOTE

DISCONNECT THE ELECTRICAL

: Refer to "COMPONENT LOCATION".

4. Reverse procedure to install.

F24696 (May 2001)Page 7 of 56

ER SERIES FRYER SERVICE MANUAL SUPPLEMENT- SERVICE PROCEDURES AND ADJUSTMENTS

SERVICE PROCEDURES AND ADJUSTMENTS

COMPUTER CONTROL BOARD

DIAGNOSTICS

The comput er control is used on other equipment and is capable of displaying many dif ferent prompts. Therefor e, some prompts not applicable computer is looking for either 24 V A C or 24 V A C gr ound on par ticular pins, an open connection c an c ause a nonapplicabl e prompt to appear. Refer to "COMPUTE R CO NTROL HARNESS PIN-OUTS CHART " under "TROUBLESHOOTING".

Diagnostics are divided into two areas, "OP E RA TION" and "SE RV ICE". Operation mode is the standard mode of fryer operation. Ser vic e mode is intended to give the service technic ian more i nformation regarding the nature of a problem encountered. In either mode t he fryer operat es normally until an error oc curs.

If an error occurs, the information displayed will be different. The chart below shows what is displayed for both "OPERAT ION" and "SERVI CE " modes.

may display when a problem occur s i n the wiring harness. Sinc e the

The "SERVI CE " mode can only

be entered while an err or is occurring. To enter the service m ode, press and hold

the product 3 and 4 keys and t ur n the power switch ON. To ex it, turn the power switch OFF. The following display s/c omputer responses will be given for the noted conditions.

CONDITION

No input on

pins

3, 4, 5, or 6

Low

Temperature

(lack of heat)

High

Temperature

Alarm

High

Temperature

(high limit)

Tilt Switch

OPEN

OPERATION MODE

DIAGNOSTICS

DISPLAY

IGN FAILURE

LOW TEMP LO TEMP XXXF

HIGH TEMP HI TEMP XXX(F

OFF OFF

SERVICE MODE

DIAGNOSTICS

DISPLAY

IGN FAILURE on

left side or right side

for split vat only

COMPUTER RESPONSE

HEAT OFF

HEAT OFF Temperature is below the lowest operational set point. Refer to "COMPUTER CONTROL" under "TROUBLESHOOTING".

HIGH TEMP DISPLAYED Output at pin 15 and/or 16 (split vat) should already be OFF unless there is a problem with computer. Vat temperature is 410°F or higher which is well above the highest operational set point. Refer to "COMPUTER CONTROL" under "TROUBLESHOOTING".

OFF DISPLAYED Mechanical high limit is OPEN (435°F), heat OFF and input is removed from pin 1 and/or pin 2 which indicates to the computer --- VAT TURNED OFF.

OFF DISPLAYED Heaters raised or problem with the ti lt switch. Heat is OFF and input is removed from pin 1 and/or pin 2 which indicates to the computer --- VAT TURNED OFF.

Drain Valve

Switch

(if installed)

Probe

Open or Short

No input on

pin 11

Not passing

Self Check

DRAIN OPEN DRAIN OPEN

PROBE OPEN R or

CALL SERVICE

CLOSE DOOR CLOSE DOOR HEAT OFF

CALL SERVICE MICRO FAIL System will operate in backup mode

L for split vat

PROBE SH R or L

for split vat

Input is removed from pin 10. Drain valve is OPEN or there is a problem with switch.

F24696 (May 2001) Page 8 of 56

DRAIN OPEN DISPLAYED

HEAT OFF

, HEAT OFF

ER SERIES FRYER SERVICE MANUAL SUPPLEMENT - ELECTRICAL OPERATION

Power up Diagnostics

On power up, the control will execute a self check. The failure of any of these tests will result in the message “CALL SERVICE” or “MICRO FAIL” being displayed.

This prompt will flash at approximately a 1 hert z rate. Whil e the prompt is displayed, the computer will not function. If the failure is in the computer, the fryer will operate in backup mode.

When the fryer c omputer comes out of i nitial ization and self check rout ines, it will either enter the heating m ode or the melt mode (if programmed) of operation.

For a split vat fryer, one vat can be OFF while t he other is in operation. If this occurs, the si de that is OFF will be indicat ed by displaying the OFF prompt to the user. The message will be on the side of the display which corresponds to the vat which is OF F.

System Tests

The system di agnostics menu is intended to give you the ability to test the basic parts of the computer. It can be entered by pressing the 8 and 9 produc t keys simultaneously while tur ning on power to the fr y er c omputer. T he message "SYSTEM TESTS" is di splayed. In this mode you can select one of three tests.

With DISPLAY TEST displayed, press enter to begin a t est, use the up and down arrows to rotate through the screens. Press exit onc e to return to the test menu or twice to return to normal operation.

With KEYPAD TEST displayed, press enter to begin the test. The control will respond by displayi ng the name of the key pressed. Press exi t once to return t o the test menu or t wice to return to nor mal operation.

With VER xxx displayed, the release number is displayed as "VER XXX".

ELECTRICAL OPERATION

SEQUENCE OF OPERATION

Solid State Fryer Control, Full Vat

Refer to schematic diagram TSP 1567C for both the "Fryer Cont r ols" operation and the "Kleenscreen Filtering system" oper ation.

FRY CYCLE - LIQUID FRYING OIL

: If usi ng solid shortening, r efer to "ME LT

NOTE

CYCLE - SOLID S HORTENING" in this section.

1. Conditions. A. Fryer connected to corr ec t supply v oltage

(separate connections are required f or each section of the battery).

1) 208, 240 or 480VAC - power for heating elements.

2) 208 or 240VAC models - Step down transformer(s) provide power for the fryer controls, basket lift(s) if installed, and the Kleenscreen filtering controls.

3) 480VAC models - A separate

4) All models require a separate

B. 24VAC transformer ener gized. C. Fryer properly gr ounded. D. Internal fryer cir c uit breakers ON.

NOTE

KW only. E. Power switch to t he fryer section controls

in center NEUTRAL (starting) position.

F. Til t switch contacts CLOSED (N.O. - held

CLOSED with heat ing elements down). G. Second high limit thermostat CLOSED. H. F r y ing oil at the proper level in vat and

below 300°F.

120VAC connection is used along with step down transformer(s) to provide power for the fryer cont r ols, basket lift(s) if instal led, and the Kleenscreen filter ing controls.

120VAC connection for the pump motor.

: 208 and 240VAC models at 21 and 24

I. Fry/Melt switch in FRY position. J. T emperature control set to desired frying

temperature.

F24696 (May 2001)Page 9 of 56

ER SERIES FRYER SERVICE MANUAL SUPPLEMENT - ELECTRICAL OPERATION

2. Press power ON switch. A. 24VAC i nitial ly energizes relay coil R1

through the m omentary O N power switch contacts (N.O.).

B. When switch is rel eased, r elay coil R1

remains energized through R1-2 "latching circuit" contacts (N.O.) and the momentary OFF power switch cont ac ts (N.C.).

1) R1-1 CLOSED.

2) R1-2 CLOSED.

C. Supply v oltage energizes the foll owing

components:

1) Power ON light (red).

2) Power supplied to basket lif t controls, if installed.

3) 1CON and 3CON through til t switch and second high li mit t her mostat.

4) Temperature control board at proper terminal (2, 3 or 4) for supply voltage and jumpered to terminal 5.

D. T emperature cont rol board evaluates the

inputs fr om thermistor and set point potentiometer then energizes the board relays.

1) The Control relay contacts (N.O.) at terminal 5 CLOSE.

2) The first high limit relay c ontacts (N.C.) at terminal 6 change state to the normally OPEN posi tion and provide a path to the out put at terminal 7.

: The f irst high l imit "light " may

NOTE

quickly flash once, unt il the High limit rel ay is energized.

a. 2CON and 4CON are energized

and heating elements are powered.

b. Heat light comes ON.

: Refer to "SCHEMATIC

NOTE

TSP1569C" under "S CHE M A TIC DIAGRAMS".

3. Oil reaches set point temperature. A. Temperature contr ol de-energizes the

"control r elay" on board, cont ac ts at terminal 5 OPEN and the output at terminal 7 is removed.

1) 2CON and 4CON are de-energized and power is removed from the heating elements.

2) Heat light goes OFF.

4. Temperature control cycles output to terminal 7 until power switch is turned OFF, heating element s are r aised or a high li mit condition occurs.

A. If oil reac hes 410°F ±5, t he temperature

control de- ener gizes "high limit r elay" on board, contact s revert bac k to the normally CLOSED position and the output changes to terminal 6.

1) The first high limit li ght comes ON.

2) 2CON and 4CON are de-energized and power is removed from the heating elements.

3) Output is removed fr om term inal 6 when oil temperature drops below set point temperature and is returned to terminal 7.

B. If the second high limit OPENS

(435°F ±15) or the tilt switch operat es, 1CON and 3CON are de-energized and power is removed from the heati ng element s and heating stops.

1) Trouble "light " and second high limit "light" come ON.

MELT CYCLE - SOLID SHORTENING

1. Conditions. A. Sam e as outlined in steps 1A t hr u 1G

under "FRY CYCLE - LIQUID FRYING OIL".

B. Solid shortening at the proper pounds in

vat and at room temperature. C. Fry/Melt switch in MELT position. D. T emperature Contr ol set to desired frying

temperature.

2. Same as outlined in steps 2 thru 2. C. 4) under "FRY CYCLE - LIQUID FRYING OIL".

3. Temperature control boar d evaluates the inputs from thermistor then energiz es the boar d relays.

A. Melt cycle is initiated and the temperat ure

control functions as a percent ON/OFF timer.

1) The control relay contacts (N.O.) at terminal 5, cycle the output at terminal 7 to energize 2CON and 4CON and power the heating elements.

a. Initial condit ion is OFF 45

seconds.

b. Heat condition ON 2 seconds

(heat li ght ON).

F24696 (May 2001) Page 10 of 56

ER SERIES FRYER SERVICE MANUAL SUPPLEMENT - ELECTRICAL OPERATION

: Refer to "SCHEMATIC

NOTE

TSP1569C" under "S CHE M A TIC DIAGRAMS".

B. Control cycles output at time interval s of

30 seconds OFF, then 2 seconds ON (heat light ON).

4. Shortening t emperature reac hes 135(F. A. Melt cycle is automatically over-ridden.

: The Fry/Melt switch shoul d r emain in

NOTE

the "Melt" position. B. Control uses thermistor input to cycle the

output at ter minal 7.

5. Shortening r eac hes set poi nt temperat ur e. A. Control removes output f rom pin 7.

1) 2CON and 4CON are de-energized and power is removed from the heating elements.

2) Heat light goes out.

6. Control cycles the output at terminal 7, on the vat temperature.

4) All models require a separate 120VAC connection for the pump motor.

B. 24VAC transformer 2T energized.

1) Power to pins 3, 4, 5, 6, 11, and 17 (control system main input) on computer main harness.

2) 24 VAC ground to pins 9, 12, and 13 (control system main input GND).

NOTE:

Pin 12 on the main harness is used to indicat e to the comput er the type of fryer ( full or split vat) the computer is installed in. If the fryer is a full vat , pin 12 is tied to 24 VAC ground. If the fry er is a split vat, pin 12 is tied to 24 VAC.

C. F r y er properly grounded. D. I nternal f r y er circuit breakers ON.

: 208 and 240VAC models at 21 and 24

NOTE

KW only. E. Power switch to t he fryer section controls

in the OF F position.

Computer Control, Full Vat

Refer to schematic diagram’s TSP1571C for "Fryer Controls" operat ion and TSP1587 "Kleenscreen Filtering system" oper ation.

FRY CYCLE - LIQUID FRYING OIL

: If usi ng solid shortening, the computer

NOTE

control shoul d be pr ogr ammed to use the M E LT CYCLE. In the M E LT CYCLE, the computer will "cycle" the heaters ON/ O FF in short intervals to gradually heat and liquify the short ening until it reaches a temperature of 135°F.The comput er then resumes normal operation as described under FRY CYCLE.

1. Conditions. A. Fryer connected to corr ec t supply v oltage

(separate connections are required f or each section of the battery).

1) 208, 240 or 480VAC - power for heating elements.

2) 208 or 240VAC models - Step down transformer(s) provide power for the fryer controls, basket lift(s) if installed, and the Kleenscreen filtering controls.

3) 480VAC models - A separate 120VAC connection is used along with step down transformer(s) to provide power for the fryer cont r ols, basket lift(s) if instal led, and the Kleenscreen filter ing controls.

F. Til t switch contacts CLOSED (N.O. - held

CLOSED with heat ing elements down). G. Second high limit thermostat CLOSED. H. F r y ing oil at the proper level in vat and

below 300°F. I. Computer control is setup properly and

ready to use.

2. Press power ON switch. A. 12VAC transformer 1T energized.

1) Computer power supply board PS-1 is energized and a (+ ) 12V DC si gnal is sent to pin 23 on the computer main harness.

B. Computer control powers ON, initi alizes

and performs a diagnostic self check.

: If the control passes self c hec k , then

NOTE

the outputs are energized and operation sequence continues. If control does not self test then CALL SERVICE or M ICRO FAIL will display. Refer to "COMPUTER CONTROL BOARD DIAG NOSTICS" under " S E RV ICE PROCEDURES AND ADJUSTMENTS".

1) R1 control relay, 1CON and 3CON will energize.

a. R1 relay energized, NO contacts

CLOSE and supply power to pin 1 on computer main harness.

pass

F24696 (May 2001)Page 11 of 56

ER SERIES FRYER SERVICE MANUAL SUPPLEMENT - ELECTRICAL OPERATION

NOTE:

Pins 1 and 2 on the main harness are used to monitor the power switch "status" of the vat(s). Pin 1 is the power status i nput on a full vat or right side split vat and pin 2 is the input for the l eft side split vat only. These inputs tell the computer which vat(s) are turned ON or OFF.

3. Computer control evaluates input from thermistor at pins 3 and 4 (full vat or right side split vat).

: Pins 1 and 2 (l eft side split v at only) on

NOTE

temperat ure probe harness.

A. Computer control evaluates the input from

thermistor then activates t he 24V A C output f r om pin 15 and power is applied to R2 control relay.

1) R2 control relay i s energized and the N.O. contacts CLOSE.

a. 2CON and 4CON are energized

and heating elements are powered.

NOTE:

Pin 15 and 16 on the main computer harness are the heat outputs. Pin15 is the full v at or right side split vat output and pin 16 is the left side output on a split vat only.

4. Oil temperature reaches set temperatur e.

2) R1 contacts OPEN and remove power from pin 1 (full vat or right si de split vat). The display will indicate “OFF”.

: If the second high limit t rips for t he

NOTE

left side split vat onl y, R3 and contactor s 3 and 4 are de-energized. Power is removed form the left side vat heating elements only and heati ng st ops. R3 c ontacts OPEN and remove power from pin 2 ( left side split vat only). The display will indicate “OFF” for the left si de vat.

: The f ilter valve handle and t he discard valve

NOTE

handle are connected to a mechani c al valve and switch assembly to r oute the flow of oil fil tering system and supply power to the pump motor .

Kleenscreen Filtering S ystem

For Solid State Control, refer to schematic diagram TSP1567C f or both the "Fryer Controls" operati on and the "Kleenscreen Filter ing system" operat ion.

For Comput er Control, r efer to schem atic diagrams TSP1571C f or the "Fryer Cont r ols" operation and TSP1587C f or the "Kleenscreen Filtering system" operation.

1. Conditions A. Fryer connected to corr ec t supply v oltage

(separate connections are required f or each section of the battery).

A. Computer turns OFF heat output and

control r elay R2 de-energizes.

B. 2CON and 4CON are de-energized and

power is removed from heating elements.

5. Computer cycl es heat out put on oil temperature until power switch is turned OFF, heating element s are r aised or a high li mit condition occurs.

: Steps 5A and 5B discuss OPEN high limits.

NOTE

For additional information on computer control er r or messages, refer t o " COMPUTER CONT ROL BOARD DIAG NOSTICS" under " S E RV ICE PROCEDURES AND ADJUSTMENTS".

A. If the oil r eaches 410(F ±5, the display will

indicate “HI TEMP” as an al ar m to the operator only .

B. If the second high limit (435(F ±15)

OPENS or the tilt swit c h oper ates, the control r elay R1 and contactor s 1 thr u 4 are de-energized.

1) Power is removed form the heat ing element s and heating stops.

B. Fryer properly grounded. C. Power switch to fryer section controls

turned OFF . D. F r y ing oil below 300°F. E. Fi lter drawer assembly installed proper ly. F. Filter power switch turned O FF. G. Filter valve handle (red) retr ac ted.

1) Fil ter valve switch N.O. contacts OPEN.

H. Discard valve handle (white) retrac ted.

1) Discard valve switch N.O. contacts OPEN.

2. Set tem perature control between 300°F (minimum) and 350°F (maxim um).

: Oil should not be filtered out side of this

NOTE

temperat ure range. At l ower temperatures the oi l is thicker whi c h may increase filt er ing time and place a greater load on the pump. At higher oil temperat ures, oil seal life is deceased.

3. Turn the power switch ON, to the fry er sect ion to be filtered.

F24696 (May 2001) Page 12 of 56

ER SERIES FRYER SERVICE MANUAL SUPPLEMENT - ELECTRICAL OPERATION

A. Allow oil to cycle at set temperature for

approximately 10 minutes.

: If usi ng solid shortening, onc e it has

NOTE

melt ed, stir the oil to eliminate any sold shortening in c old zone of t he vat. Refer to "MELT CYCLE - S OLID SHORTENING".

4. Turn the power switch OF F, to the fryer section to be filtered.

5. Open the manual drain valve to the fryer section in need of filteri ng and drain the liquid oil/shortening into filter tank.

: If usi ng solid shortening, allow hot

NOTE

shortening to stand in filter tank for approximately 6 minut es prior to f iltering.

6. Turn filter power switch O N. A. Switch pilot light comes ON.

7. Extend F ilter valve handle of the same fryer section.

A. Filter valve switch N.O. contacts CLOSE.

1) Filter rel ay c oil is energi z ed and the N.O. contacts CLOSE.

a. Power supplied to pump motor.

Discard of u sed oil

1. Conditions A. Sam e as outlined in steps 1 thr u 4 under

“KLEENSCREEN FILTERING SYSTEM”.

2. Open the manual drain valve to the fryer section in need of oil discarding and drai n the oil into the filter.

3. Attach oi l drain hose the male quick c onnec t fitting on the fryer.

4. Turn filter power switch O N. A. Switch pilot light comes ON.

5. Place drain hose discharge end into a used oil holding tank .

6. Extend discard handle. A. Discard valve switch N.O. contacts

CLOSE.

1) Filter rel ay c oil is energi z ed and the N.O. contacts CLOSE.

a. Power supplied to pump motor.

B. Oi l begins flowing through drain hose i nto

holding tank until power is removed.

B. Pum p motor circulates oil through f ilter

until power is removed.

8. When the oil filt er ing process is compl eted, close the manual drain valve to the fryer and allow the vat to refill.

: No electr ical switching occurs by closing t he

NOTE

manual drain valve unless the optional dr ain valve switch is installed.

9. When all f iltered oil is retur ned to the fry er , retract the filter valve handle.

A. Filter valve switch N.O. contacts OPEN.

1) Filter rel ay c oil is de-energized and the N.O. contacts OPEN.

a. Power is removed fr om pump

motor.

10. Turn filter power switch OFF. : If usi ng solid shortening, when all fi ltered oil

NOTE

is returned to the vat and fil ter power switch is OFF, open the filter drawer approximately one inch. Allow the remaining shortening in the li ne to drain int o the filter tank t o prevent possible clogging after the shortening cool s and solidifies. Close the f ilter drawer when complete.

7. When all used oil is empti ed from the fryer, retract the discard valve handle.

A. Discard valve switch N.O. contacts OPEN.

1) Filter rel ay c oil is de-energized and the N.O. contacts OPEN.

a. Power is removed fr om pump

motor.

8. Close the manual drain valve to the fryer. : No electr ical switching occurs by closing t he

NOTE

manual drain valve unless the optional dr ain valve switch is installed.

9. Turn filter power switch O FF. : If usi ng solid shortening, when all fi ltered oil

NOTE

F24696 (May 2001)Page 13 of 56

ER SERIES FRYER SERVICE MANUAL SUPPLEMENT - ELECTRICAL OPERATION

COMPONENT FUNCTION

NOTE

: For components not li sted her e, refer t o the ER series service manual listed on the front cover and under

"INFORMATION SOURCES" in the "GENERAL" section.

Filter Power Switch Filter Relay

Transformer 2T

Transformer 1T

Pump Motor Filter Valve Switch

Discard Valve Switch

Fryer Power Switch

................ Suppli es 120VA C to pump motor through f ilter relay contacts (N.O.) when

............ Suppli es 24VA C to the oil fil ter control c ircuit and fryer power switch.

............ Suppli es 12VA C to the comput er power supply boar d. Transformer is

............... Operates the "pump" to circulate oil through the fil tering system.

.......... Energizes the filter relay coil to supply power to the pump motor through

......... Suppli es 120VA C to pump motor when fil ter relay i s energized.

24VAC coil is energized. Filter power switch must be ON and the filter valve switch or discard valve switch must be CLOSED (valve handle ext ended) .

Transformer is energiz ed when supply power is connec ted to fry er .

energized when fr y er power switch is turned ON. Computer control models only.

filter relay contacts (N.O.) when switch i s CLO S E D ( valve handle extended). When oil f iltering is complete, close the manual drai n valve to t he fryer and allow the vat to refill. Retract the filter handle when all filtered oil is returned.

....... Energizes the filter relay coil to supply power to the pump motor through

filter relay contacts (N.O.) when switch i s CLO S E D ( valve handle extended). This allows the oil to be discarded through the discard hose int o a separate container. When filt er tank is empty, retract the handle to return the discard switch to norm al operating position.

......... Energizes relay coil R1 and supplies power to fryer c ontrol cir c uit through

relay R1-1 contacts (N.O.). The switch positions are: momentary ON, momentary OFF wi th a center NEUTRAL ( star ting) position. Soli d state controls onl y .

Circuit 1 on the switch is the normally CLOSED (N.C.) si de. Press power OFF to momentar ily OP E N switc h c ontacts and turn the fryer OFF.

Circuit 2 on the switch is the normally OPEN (N.O.) side. Press power ON to momentarily CLOSE switch contacts and turn the fr y er ON.

Relay R1

Relay R2

F24696 (May 2001) Page 14 of 56

.................. Suppli es power to fryer contr ol circuit and basket li ft ci rcuit (if installed)

through relay R1-1 contacts (N.O.) when 24VAC coil is energized. T he r elay remains energized through R1-2 cont ac ts (N.C.) and f r y er power switch contacts until power switch is turned OFF. Ful l vat and split vat fryers, solid state controls only.

.................. Suppli es power to fryer contr ol circuit and basket li ft ci rcuit (if installed)

through relay R2-1 contacts (N.O.) when 24VAC coil is energized. T he r elay remains energized through R2-2 cont ac ts (N.C.) and f r y er power switch contacts until power switch is turned OFF. Split vat fry er s wit h sol id state controls onl y .

ER SERIES FRYER SERVICE MANUAL SUPPLEMENT - ELECTRICAL OPERATION

COMPONENT LOCATION

F24696 (May 2001)Page 15 of 56

ER SERIES FRYER SERVICE MANUAL SUPPLEMENT - ELECTRICAL OPERATION

SCHEMATIC DIAGRAMS

Solid S t ate Control and Kleenscreen Filter, F ull Vat

F24696 (May 2001) Page 16 of 56

ER SERIES FRYER SERVICE MANUAL SUPPLEMENT - ELECTRICAL OPERATION

Solid S t ate Control and Kleenscreen Filter, Split Vat

F24696 (May 2001)Page 17 of 56

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