Frymaster 17EC, 17ECS, EWBS, ESW User Manual

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17EC, 17ECS, ESW and EWBS

Installation, Operation, Service & Parts Manual

Electric Cooker Models

Frymaster, a member of the Commercial Food Equipment Service Association, recommends using CFESA Certified Technicians.

24-Hour Service Hotline 1-800-551-8633

Online manual updated 06/07/04

*8195680*

MAY 2003

NOTICE IF, DURING THE WARRANTY PERIOD, THE CUSTOMER USES A PART FOR THIS ENODIS EQUIPMENT OTHER THAN AN UNMODIFIED NEW OR RECYCLED PART PURCHASED DIRECTLY FROM FRYMASTER/DEAN, OR ANY OF ITS AUTHORIZED SERVICE CENTERS, AND/OR THE PART BEING USED IS MODIFIED FROM ITS ORIGINAL CONFIGURATION, THIS WARRANTY WILL BE VOID. FURTHER, FRYMASTER/DEAN AND ITS AFFILIATES WILL NOT BE LIABLE FOR ANY CLAIMS, DAMAGES OR EXPENSES INCURRED BY THE CUSTOMER WHICH ARISE DIRECTLY OR INDIRECTLY, IN WHOLE OR IN PART, DUE TO THE INSTALLATION OF ANY MODIFIED PART AND/OR PART RECEIVED FROM AN UNAUTHORIZED SERVICE CENTER.

DANGER

Improper installation, adjustment, alteration, service, or maintenance can cause

property damage, injury, or death. Read the installation, operating, and service

instructions thoroughly before installing or servicing this equipment.

DANGER

For your safety, do not store or use gasoline or other flammable liquids or vapors in the

vicinity of this or any other appliance.

DANGER

This equipment is intended for indoor use only. Do not install or operate this

equipment in outdoor areas.

DANGER

Do not operate this equipment unless it has been properly installed and checked by

qualified personnel.

DANGER

Do not operate this equipment unless all covers and access panels are in place and

properly secured.

DANGER

Do not attempt to repair or replace any component of this equipment unless power to

the unit has been disconnected.

DANGER

If the power supply cord is damaged, it must be replaced by the manufacturer or its

service agent or similarly qualified persons in order to avoid a hazard.

DANGER

Use caution when setting up, operating, or cleaning this equipment to avoid contact

with heated surfaces.

DANGER

Do not use water jets to clean this equipment.

ELECTRIC COOKER MODELS 17EC, 17ECS, ESW AND EWBS

TABLE OF CONTENTS

CHAPTER 1: General Information

1.1 Parts Ordering and Service Information 1-1

1.2 Safety Information 1-1

1.3 Equipment Description 1-2

1.4 Installation, Operating, and Service Personnel 1-3

1.5 Definitions 1-3

1.6 Shipping Damage Claim Procedure 1-4

CHAPTER 2: Installation Instructions

2.1 General Installation Requirements 2-1

2.2 Caster/Leg Installation 2-2

2.3 Pre-Connection Preparations 2-2

2.4 Connection to the Electrical Power Supply 2-3

CHAPTER 3: Operating Instructions

3.1 Spaghetti Magic II Controller (As Used on 17EC and 17ECS Units) 3-1

3.2 Computer Magic III Controller (As Used on EWBS Units) 3-3

3.3 Thermostat Control and Switch Panel (As Used on ESW and EWBS Units) 3-8

3.4 Boiling Out the Cookpot 3-9

CHAPTER 4: Preventive Maintenance

Daily Preventive Maintenance 4-1

CHAPTER 5: Operator Troubleshooting

5.1 Introduction 5-1

5.2 Operator Troubleshooting Guide 5-2

5.3 Replacing the Controller (17EC/17ECS and EWBS with CM III Computer) 5-3

5.4 Replacing Fuses in 17EC and 17ECS Models 5-4

CHAPTER 6: 17EC/17ECS Service Procedures & Parts

6.1 Functional Description ................................................................................................... 6-1

6.2 Accessing Equipment for Servicing ............................................................................... 6-2

6.3 Replacing Equipment Components ................................................................................ 6-2

6.3.1 Replacing the Computer................................................................................................. 6-2

6.3.2 Replacing Electronic Components Other than the Computer ........................................ 6-2

6.3.3 Replacing a Heating Element ......................................................................................... 6-3

6.3.4 Replacing the High-Limit Thermostat ........................................................................... 6-5

6.3.5 Replacing a Water-Level Sensor.................................................................................... 6-6

6.3.6 Replacing the Temperature Probe .................................................................................. 6-6

6.3.7 Replacing the Pressure Regulator or Solenoid Valve .................................................... 6-7

6.3.8 Replacing the Water Faucet ........................................................................................... 6-7

6.3.9 Replacing a Basket Lift Motor or Microswitch.............................................................. 6-8

6.3.10 Replacing the Cookpot or Rinse Tank ........................................................................... 6-9

6.4 Technician Troubleshooting......................................................................................... 6-11

6.4.1 How the Power Supply System Works ........................................................................ 6-11

6.4.2 How the Computer Works............................................................................................ 6-11

6.4.3 How the Autofill/Autoskim System Works ................................................................. 6-12

6.4.4 How the Water Heating System Works ....................................................................... 6-12

6.4.5 How the Basket Lift System Works ............................................................................. 6-13

6.4.6 Technician Troubleshooting Guides ............................................................................ 6-14

Troubleshooting the 24VAC Power Supply System.................................................... 6-14

Troubleshooting the 24VAC Power to Computer........................................................ 6-15

Troubleshooting the Autofill System ........................................................................... 6-16

Troubleshooting the Water Heating System ................................................................ 6-17

Troubleshooting the Basket Lift System ...................................................................... 6-18

6.5 Parts List....................................................................................................................... 6-19

Accessories................................................................................................................... 6-19

Basket Lift Components............................................................................................... 6-20

Cabinetry ...................................................................................................................... 6-22

Cookpot, Rinse Tank, and Drain Components............................................................. 6-24

Electronics .................................................................................................................... 6-26

Water Supply System Components.............................................................................. 6-28

6.6 Wiring Diagram............................................................................................................ 6-29

CHAPTER 7: ESW/EWBS Service Procedures & Parts

7.1 Functional Description ................................................................................................... 7-1

7.2 Accessing Equipment for Servicing ............................................................................... 7-3

7.3 Replacing Equipment Components ................................................................................ 7-3

7.3.1 Replacing the Computer................................................................................................. 7-3

7.3.2 Replacing Electronic Components Other than the Computer ........................................ 7-3

7.3.3 Replacing a Heating Element ......................................................................................... 7-4

7.3.4 Replacing the High-Limit Thermostat ........................................................................... 7-5

7.3.5 Replacing a Water-Level Sensor.................................................................................... 7-6

7.3.6 Replacing the Temperature Probe .................................................................................. 7-6

7.3.7 Replacing the Pressure Regulator or Solenoid Valve .................................................... 7-8

7.3.8 Replacing the Water Faucet ........................................................................................... 7-8

7.3.9 Replacing a Basket Lift Motor or Microswitch.............................................................. 7-9

7.3.10 Replacing the Cookpot ................................................................................................. 7-10

7.4 Technician Troubleshooting......................................................................................... 7-12

7.4.1 How the Power Supply System Works ........................................................................ 7-12

7.4.2 How the Computer Works............................................................................................ 7-12

7.4.3 How the Autofill and Skim Systems Work.................................................................. 7-13

7.4.4 How the Water Heating System Works ....................................................................... 7-13

7.4.5 How the Basket Lift System Works ............................................................................. 7-14

7.4.6 Technician Troubleshooting Guides ............................................................................ 7-15

Troubleshooting the 24VAC Power Supply System.................................................... 7-15

Troubleshooting the Autofill System ........................................................................... 7-16

Troubleshooting the Water Heating System ................................................................ 7-17

Troubleshooting the Basket Lift System ...................................................................... 7-18

7.5 Parts List....................................................................................................................... 7-19

Accessories................................................................................................................... 7-19

Basket Lift Components............................................................................................... 7-20

Cabinetry ...................................................................................................................... 7-22

Control Components..................................................................................................... 7-24

Cookpot and Drain Components .................................................................................. 7-25

Electronics .................................................................................................................... 7-26

Water Supply System Components.............................................................................. 7-28

7.6 Wiring Diagrams .......................................................................................................... 7-30

iii

THIS PAGE INTENTIONALLY LEFT BLANK.

ELECTRIC COOKER MODELS 17EC, 17ECS, ESW AND EWBS

CHAPTER 1: GENERAL INFORMATION

1.1 Parts Ordering and Service Information

In order to assist you as quickly as possible, the Frymaster Factory Authorized Service Center (FASC) or Service Department representative requires certain information about your equipment. Most of this information is printed on a data plate affixed to the inside of the door.

Parts orders may be placed directly with your local FASC or distributor. Included with cookers when shipped from the factory is a list of FASCs. If you do not have access to this list, contact the Frymaster Technical Service Department at 1-800-551-8633 or 1-318-865-1711.

When ordering parts, the following information is required:

Model Number: Serial Number: Voltage: Item Part Number: Quantity Needed:

Service information may be obtained by contacting your local FASC/Distributor. Information may also be obtained by calling the Frymaster Technical Service Department at 1-800-551-8633 or 1-318-865-1711. When requesting service, please have the following information ready:

Model Number: Serial Number: Voltage:

In addition to the model number, serial number, and voltage, please be prepared to describe the nature of the problem and have ready any other information that you think may be helpful in solving your problem.

RETAIN AND STORE THIS MANUAL IN A SAFE PLACE FOR FUTURE USE.

1.2 Safety Information

Before attempting to operate your unit, read the instructions in this manual thoroughly.

Throughout this manual, you will find safety notations enclosed in boxes similar to the ones illustrated below and on the following page.

CAUTION

CAUTION boxes contain information about actions or conditions that may cause or result

in malfunction of your equipment.

WARNING

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WARNING boxes contain information about actions or conditions that may cause or

result in damage to your equipment, and which may cause your equipment to

malfunction.

DANGER

DANGER boxes contain information about actions or conditions that may cause or result

in injury to personnel, and which may cause damage or malfunctioning of your

equipment

1.3 Equipment Description

The automatic, high-volume Electric Cooker models ESW and EWBS are specifically designed for rethermalizing pre-cooked packaged foods, boiling seafood, or cooking fresh foods and pasta. All models are capable of delivering up to 50 pounds (26 kg) of product per hour.

Model Comparison:

17EC/17ECS:

The 17EC and 17ECS series feature two 8.5-kilowatt heating elements in a

16.5 gallon (62.5 liter) stainless steel cookpot. A specially modified SMS II computer controls the cooking process and the automatic filling (Autofill) and automatic skimming (Autoskim) features. The Autoskim feature sprays water onto the surface of the water, forcing starch across to the overflow drain. This eliminates loss of cooking time associated with removing excess starch buildup. It also keeps the cooking water at the optimum level by replacing water evaporated during the cooking process. These models are also equipped with automatic basket lifts. The cookpot is safeguarded against over filling and boilover by a large overflow drain and a starch diverter. “SD” following the model designation indicates a stainless steel cookpot and door, and an enameled cabinet. “SC” following the model designation indicates all stainless steel components. The 17ECS model consists of a cooker and rinse tank combined in a single cabinet. The 17EC model has no rinse tank. Both models have a manually operated faucet equipped with a flexible hose.

ESW: The ESW series features a 13-kilowatt cookpot holding 16.5 gallons (62.5 liters) of

water. A rocker-type ON/OFF switch controls electrical power to the unit. A manually adjusted thermostat regulates water temperature, and a 3-position rocker switch (BOILIDLE-SIMMER) controls power to the heating element. The unit also has two rocker switches for adding water to the unit. The FAUCET switch opens a normally closed solenoid valve to add water through a swing-away faucet. The SKIM switch opens a normally closed solenoid valve to add water through a spray nozzle mounted on the front of the cookpot. The skim feature sprays water onto the surface of the water, forcing starch to the overflow drain. This eliminates loss of cooking time associated with removing excess starch buildup. The cookpot is safeguarded against over filling and boilover by a large overflow drain. “SD” following the model designation indicates a stainless steel cookpot and door, and an enameled cabinet. “SC” following the model designation indicates all stainless steel components.

EWBS: The EWBS series replaced the ESW series. Models feature a 13-kilowatt heating element in a 16.5-gallon (62.5-liter) cookpot. The control options available include an operating thermostat and switch panel (identical to that on the ESW, described on the

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previous page) or a specially modified CM III computer. The equipment may be configured as single cooker (E1WBS) or as a battery of two cookers (E2WBS). “SD” following the model designation indicates a stainless steel cookpot and door, and an enameled cabinet. “SC” following the model designation indicates all stainless steel components. Optional features include automatic water filling and a manual skim feature. Standard safety features on both models include a low-water safety shutoff and a water pressure regulator. All units may be configured with either a “Sauce Package” consisting of a saucepan insert rack, a sauce bag rack, and a rack cover, or with a “Pasta Package” consisting of a bulk basket, portion cups and cup rack, and a strainer board. Both models may be equipped with an optional swing-away faucet. The cookpot on both models is safeguarded against over filling and boilover by a large overflow drain and a starch diverter.

1.4 Installation, Operating, and Service Personnel

Operating information for Frymaster equipment is intended for use by qualified and/or authorized personnel only, as defined in Section 1.5.

All installation and service on Frymaster equipment must be performed by qualified, certified, licensed, and or/authorized installation or service personnel, as defined in Section 1.5.

1.5 Definitions

QUALIFIED AND/OR AUTHORIZED OPERATING PERSONNEL

Qualified/authorized operating personnel are those who have carefully read the information in this manual and have familiarized themselves with the equipment functions, or who have had previous experience with the operation of the equipment covered in this manual.

QUALIFIED INSTALLATION PERSONNEL

Qualified installation personnel are individuals, or firms, corporations, or companies that, either in person or through a representative, are engaged in and are responsible for the installation of electrical appliances. Qualified personnel must be experienced in such work, be familiar with all electrical precautions involved, and have complied with all requirements of applicable national and local codes.

QUALIFIED SERVICE PERSONNEL

Qualified service personnel are those who are familiar with Frymaster equipment and who are authorized by Frymaster to perform service on Frymaster equipment. All authorized service personnel are required to maintain a complete set of service and parts manuals and to stock a prescribed minimum amount of Frymaster parts. Failure to use qualified service personnel will void the Frymaster Warranty on your equipment. A list of Frymaster Factory Authorized Service Centers (FASCs) was included with the equipment when it was shipped from the factory.

1.6 Shipping Damage Claim Procedure

Your Frymaster equipment was carefully inspected and packed before leaving the factory. The transportation company assumes full responsibility for safe delivery upon acceptance of the equipment for transport.

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What to do if your equipment arrives damaged:

1. File a claim for damages immediately, regardless of the extent of damages.

2. Inspect for and record all visible loss or damage and ensure that this information is noted on

the freight bill or express receipt and is signed by the person making the delivery.

3. Concealed loss or damage that was unnoticed until the equipment was unpacked should be

recorded and reported to the freight company or carrier immediately upon discovery. A concealed damage claim must be submitted within 15 days of the date of delivery. Ensure that the shipping container is retained for inspection.

FRYMASTER DOES NOT ASSUME RESPONSIBILITY

FOR DAMAGE OR LOSS INCURRED IN TRANSIT.

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ELECTRIC COOKER MODELS 17EC, 17ECS, ESW AND EWBS

CHAPTER 2: INSTALLATION INSTRUCTIONS

2.1 General Installation Requirements

PROPER INSTALLATION IS ESSENTIAL FOR EFFICIENT, TROUBLE-FREE OPERATION OF YOUR COOKER. ANY UNAUTHORIZED ALTERATIONS MADE TO THIS EQUIPMENT WILL VOID THE FRYMASTER WARRANTY.

Upon arrival, inspect the cooker carefully for visible or concealed damage. (See Shipping Damage Claim Procedure in Chapter 1.)

NATIONAL CODE REQUIREMENTS

This equipment is to be installed in compliance with the Basic Plumbing Code of the Building Officials and Code Administrators International, Inc. (BOCA) and the Food Service Sanitation Manual of the U.S. Food and Drug Administration.

ELECTRICAL GROUNDING REQUIREMENTS

All electrically operated appliances must be grounded in accordance with all applicable national and local codes. A wiring diagram is located on the inside of the equipment door. Refer to the rating plate on the inside of the door for proper voltages.

FCC COMPLIANCE

The user is cautioned that any changes or modifications to Frymaster computers not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. Frymaster computers have been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC rules. While these devices are verified as Class A devices, they have been shown to meet the Class B limits. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of the equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.

If necessary, the user should consult the dealer or an experienced radio and television technician for additional suggestions.

The user may find the booklet “How to Identify and Resolve Radio-TV Interference Problems” helpful. It is prepared by the Federal Communications Commission and is available from the U.S. Government Printing Office, Washington, DC 20402, Stock No. 004-000-00345-4.

2-1

2.2 Caster/Leg Installation

Depending upon the specific configuration ordered, your unit might have been shipped without installed casters or legs. If casters or legs are installed, you may skip this section and proceed to Section 2.3, Pre-Connection Preparations.

If your unit requires the installation of casters/legs, install them in accordance with the instructions included in your accessory package.

2.3 Pre-Connection Preparations

After the unit has been positioned in the area where it will be used, ensure the following have been accomplished before connecting the unit to the electrical power source:

1. This equipment must be stabilized by installing restraining chains on units equipped with

casters or anchor straps on units equipped with legs. Follow the instructions shipped with the casters/legs to properly install the chains or straps.

2. Level units equipped with legs by screwing the legs out approximately 1 inch, then adjusting

them so that the unit is level.

For units equipped with casters, there are no built-in leveling devices. The floor where the unit is to be installed must be level.

3. Install the basket lift arms (on units so equipped) on the lift rods (located at the top rear of

the cabinet) so that the basket lift rollers guides the lift arms.

NOTE: Some adjustment of the rollers may be necessary for free movement of the basket lift arms.

4. If so equipped, connect the water hose(s) to the fitting(s) at the rear of the unit and connect

the unit to the water supply.

CAUTION

Incoming water pressure for all units should be approximately 40 PSI (28.15 kg/cm2).

DANGER

The maximum allowable incoming water pressure for all units is 80 PSI (56.3 kg/cm2).

The maximum allowable incoming water temperature for all units is 180ºF (82ºC).

WARNING

To prevent back flushing, the connection piping should be installed with a vacuum breaker

or means of providing an air gap 1” (2.54 cm) above the cookpot rim.

NOTE: On units equipped with water hoses, the hoses come with a quick-disconnect cou- pling. The quick disconnect may be attached to the unit or to the water supply line, or it may be left off entirely, whichever you prefer. If the unit is to be moved frequently (for cleaning or preventive maintenance), Frymaster recommends installing flexible water lines. If the cooker is hard-plumbed then moved, the connections may loosen and eventually cause leaks.

2-2

Whichever option is chosen, Teflon thread-seal tape, Loctite™ PST56765 or equivalent thread sealer must be used when installing the fittings.

NOTE: Depending on specific model ordered, either hot or cold water, or both, may be connected to the unit. If available, connecting hot water will minimize the time required to bring the unit to a boil when filling with fresh water.

NOTE: In order for the water level sensors to work properly, a certain amount of mineral content in necessary in the water. For that reason, purified, deionized, or highly filtered water should not be used.

5. Connect the desired drain plumbing to the drain valve.

2.4 Connecting to the Electrical Supply

DANGER

This unit must be connected to the voltage and phase specified on the rating and serial

number plate located on the inside of the equipment door. To determine the appropriate

wire size, refer to the POWER REQUIREMENTS chart at the bottom of this page.

1. If the unit is not equipped with an installed power cord, open the door and remove the contactor

box cover. Position the unit to gain access to the rear and remove the lower back panel.

2. Insert an appropriately rated power cord into the rear of the contactor box and make connections

in accordance with the applicable wiring diagram on the following page. Install a strain relief on the power cord and replace the lower back panel and contactor box cover.

3. Attach a plug that complies with national and/or applicable local codes to the free end of the

electrical power cord and plug the unit into an appropriate outlet.

POWER REQUIREMENTS

Use copper wire ONLY, suitable for at least 170ºF (75ºC)

ELECTRIC COOKER MODELS 17EC, 17ECS, ESW, & EWBS

Amps

Volts Phase Watts

200 Single 7860 40 AWG 6 (4.1 mm) 200 Single 12000 60 AWG 4 (5.2 mm) 208 Single 8500 41 AWG 6 (4.1 mm) 208 Single 13000 63 AWG 4 (5.2 mm) 208 3P – Delta 8500 48 AWG 8 (3.3 mm) 200 3P – Delta 12000 35 AWG 6 (4.1 mm) 208 3P – Delta 13000 37 AWG 6 (4.1 mm) 230 3P – Delta 13000 33 AWG 6 (4.1 mm) 200 3P – Wye 12000 21 AWG 8 (3.3 mm) 230 3P – Wye 13000 19 AWG 8 (3.3 mm)

(per leg)

Minimum Wire Size

2-3

FIELD CONNECTION WIRING DIAGRAMS

1HV

1C1

SINGLE PHASE

FIELD CONNECTION

2HV

3HV

1C2

1C3

L2 L3

NEUTRAL TO L3

FROM TRANSFORMER

SINGLE PHASE (NO NEUTRAL)

FIELD CONNECTION

1HV

1C1

2HV

3HV

1C2

1C3

L2 L3

FROM

TRANSFORMER

FROM TRANSFORMER

1HV

1C1

3 PHASE 3 WIRE (DELTA)

FIELD CONNECTION

L2 L3

2HV

1C2

FROM TRANSFORMER FROM TRANSFORMER

3HV

1C3

3 PHASE 4 WIRE (WYE)

FIELD CONNECTION

L2 L3

1HV

1C1

2HV

1C2

3HV

1C3

FROM TRANSFORMER

2-4

ELECTRIC COOKER MODELS 17EC, 17ECS, ESW AND EWBS

CHAPTER 3: OPERATING INSTRUCTIONS

3.1 Spaghetti Magic III Controller (As Used on 17EC and 17ECS Units)

5432 7

1 Numeric Keypad 6 Skim Switch (w/Autoskim only) 2 Boil Mode Indicator 7 Timer Start Switch 3 Boil Mode Switch 8 Simmer Mode Switch 4 Power Switch 9 Simmer Mode Indicator 5 LED Display

8 9

3.1.1 Introduction

CAUTION

The Spaghetti Magic III (SMS III) computer used in 17EC/17ECS units is specially configured for them. The programming and operation of the 17EC/17ECS SMS III

computer are different than those of the SMS III computers used in other products.

The computers are not interchangeable.

The Spaghetti Magic III computer allows the operator to specify a specific cook time in minutes and seconds, then initiate a cooking cycle. The computer is configured for both automatic filling (AutoFill) and automatic skimming (Autoskim) features.

The BOIL mode is used when actually cooking pasta.

The SIMMER mode feature maintains the water temperature just below boiling (approximately 195ºF/90.6ºC), which conserves energy and water. This feature is designed for rethermalizing previously cooked packaged products, and for keeping the cooker in standby.

The SKIM feature, when selected, adds water for approximately 3 seconds once a minute. It causes the water to overflow into the drain, carrying floating starch with it. (A buildup of starch reduces the efficiency of the cooker and can cause erroneous temperature and water level sensing.)

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LOW WATER SENSING automatically de-energizes the heating element if the water in the cookpot drops too low. When the water level in the cookpot is below the sensor probes, such as

when draining and cleaning the cookpot, the controller display will read LO.

NORMAL WATER LEVEL SENSING, on units configured with the AutoFill feature, automatically adds water during or after a cooking cycle if the water level is low. With this automatic filling feature, the water level does not have to be continuously monitored. The cookpot always has the correct amount of water.

3.1.2 Operating Instructions

CAUTION

If this is the first time the unit is being used after installation, refer to Section 3.4, Boil Out

Procedure.

Before turning the cooker on, ensure that:

• the unit is connected to the water supply.

• the water supply is turned on.

• the unit is plugged into an appropriate outlet.

• the electrical power supply is turned on.

1. Turn the controller on by pressing the Power switch.

2. The unit will automatically enter the simmer mode and the simmer mode indicator will

illuminate. This will bring the cooker to “stand-by” temperature. To enter the boil mode, press the Boil Mode switch.

3. Enter the desired cooking time using the numeric keypad. The time entered appears in the LED

display.

4. When ready to initiate a cooking cycle, press the Start Timer

switch. The basket lift will automatically lower the basket or portion cups into the cookpot and the LED display will begin to count down. Simultaneously, the water will be raised to the boiling point. At the end of the cooking cycle, an alarm will sound briefly to alert you and the basket lift will automatically raise the basket or portion cups out of the water.

5. The display will automatically return to the previously set cooking time and the unit will return

to the simmer mode. If the same time is desired for the next batch, simply repeat Step 4. If a different cooking time is desired, follow Steps 3 and 4.

switch then press the Boil Mode

6. To initiate the automatic skimming (Autoskim) feature, press the Skim

3.1.3 Setting the Controller Transition Temperature/Boil Intensity

You may adjust the cooker’s Transition Temperature/Boil Intensity to prevent boilover on controllers configured with this feature.

3-2

switch.

When the water is at or above the minimum temperature for boiling (transition temperature), the controller pulses power to the elements at a programmable rate. The range can be set between 0 and

9. The default setting is 5. When the water temperature is below boiling point, the power application is 100 percent.

To set the Transition Temperature/Boil Intensity:

1. Verify that the controller is OFF (the display is blank).

2. Press the Simmer (right thermometer icon) switch to enter the programming mode; CODE appears

in the display.

3. Enter code 1111 (press the 1 button four times). Transition Temperature appears in the display.

(NOTE: If transition temperature does not appear, your controller is not configured with this feature. Press the Simmer switch to exit the programming mode. The display will go blank.)

4. Enter the minimum temperature for boiling with the keypad. This temperature will vary with

your altitude. As a guide, the table below provides boiling points for altitudes from sea level to 6000 feet (1830 meters).

Altitude Boiling Point

Feet Meters °F °C

0 0 212 100 1000 305 210 99 2000 610 208 98 3000 915 207 97 4000 1220 205 96 5000 1525 203 95 6000 1830 201 94

5. Press the simmer switch; 5BI (the default setting for boil intensity) appears.

6. Use the keypad to enter one of the settings from the table below.

Setting Power ON Power OFF

0 100% 0% 9 90% 10% 8 80% 20% 7 70% 30% 6 60% 40% 5 50% 50% 4 40% 60% 3 30% 70% 2 20% 80% 1 10% 90%

7. Press the simmer switch to lock in the new settings and exit the programming mode. The display

will go blank.

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3.1.4 Controller Simmer Mode Adjustment

NOTE: The SMS III Controller simmer temperature is adjustable from 185ºF to 215ºF (85° to

102°C). There are two versions of this controller; one is adjusted by programming, the other is manually adjusted.

To determine which version of the controller you have, turn the controller off by pressing the ON/OFF switch. The display will go blank. Press the Simmer (right thermometer icon) switch. If

Code appears in the display, the simmer mode setpoint is changed via programming; if not, skip to

Manual Adjustment below.

1. Press 1, 6, 5, 0 to enter the programming mode. The currently programmed simmer setpoint will

be displayed. If the setpoint is not correct, enter the desired setpoint (for example, press 2, 0, 0 to program the simmer setpoint to 200º.

2. Press the Simmer switch again to lock in the setpoint, then press the ON/OFF switch to turn the

controller on and return to the normal operating mode.

Manual Adjustment

1. With the unit in the simmer mode, place the tip of a good grade thermometer near the

temperature probe and determine the actual water temperature in degrees Fahrenheit. If the temperature is within 5ºF (2°C) of the desired simmer temperature, nothing more needs to be done. If it is not within 5ºF (2°C) of the desired temperature, perform Steps 2 through 5.

2. With the unit in the simmer mode, open the control panel by removing the screws in the upper

corners and tilting the panel out.

3. Remove the black rubber plug from the top of the controller housing.

4. Using a small, flat-tipped screwdriver, turn the adjusting screw to change the simmer setpoint.

¼ turn will change the setpoint about 10ºF (5°C). (You will have to experiment with the direction of rotation to determine which way to turn to raise or lower the temperature.) Wait at least 5 minutes, then recheck actual water temperature. Repeat this step until the water temperature is within 5ºF (2°C) of desired temperature.

5. Replace the plug in the controller, close the control panel, and replace the screws removed in

Step 1.

3.1.5 Toggling Between Fahrenheit and Celsius Temperature Display

1. There are two versions of the SMS Controller: one that can be toggled between Fahrenheit and

Celsius temperature display and one that cannot. To determine which version you have, turn the controller off by pressing the Power switch. The display will go blank. Press the Simmer switch. If Code appears in this display, the temperature display can be changed. If not, the display cannot be changed.

2. If Code appears in the display, press 1, 6, 5, 8. The display will toggle from Fahrenheit to

Celsius, or from Celsius to Fahrenheit.

3-4

Press the Boil Mode switch to display the cookpot temperature. If an F follows the temperature, the display is in Fahrenheit; if a C follows the temperature, the display is in Celsius.

3.1.6 Shutting the 17EC/17ECS Down

Turn the unit off by pressing the Power

switch. If shutting down at the end of the day, drain and

clean the cookpot, and put the cookpot cover in place.

3.2 Computer Magic III Controller (As Used on EWBS Units)

L 1

3 4 5 6 7

6 7

2 3 2

COMPUTER MAGIC

9 0

1 LED Displays 5 Boil Mode Switch 2 Power Switches 6 Product Buttons 1 through 5 3 Temperature Check/Program Lock 7 Product Buttons 6 through 10 4 Program Mode Switch 8 Simmer Mode Switch

CAUTION

The Computer Magic III (CM III) computer used in Electric Water Bath Systems is specially

configured for them. The programming and operation of the EWBS CM III are different

than those of the CM III computers used in electric fryers.

The two computers are not interchangeable.

3.2.1 Start-Up Procedure

CAUTION

If this is the first time the unit is being used after installation, refer to Section 3.4, Boil Out

Procedure.

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SETTING THE UNIT UP FOR FIRST-TIME OPERATION

Before turning the cooker on, ensure that:

• the unit is connected to the water supply.

• the water supply is turned on.

• the unit is plugged into an appropriate outlet.

• the electrical power supply is turned on.

CAUTION

It is recommended that the simmer setpoint and the cook/stir times for all 10 products be programmed before the unit is first used in a cooking cycle.

When the unit is tested at the factory, the simmer setpoint and product cook times are programmed. These test settings are not default settings. You must program the unit for your own particular products. Program the setpoint and all 10 product cook/stir times as follows:

1. Turn the computer on by pressing the Power Switch.

2. Enter the programming mode by pressing the Program Mode Switch . CodE appears in

the left display. If you enter the programming mode by mistake, press the switch again to exit the programming mode.

NOTE: If you try to enter the programming mode while the computer is cooking, the display will flash BUSY.

NOTE: The unit comes from the factory configured to display in degrees Fahrenheit. To toggle back and forth between Fahrenheit and Celsius, press the Program Mode switch, then enter the code the Temperature Check/Program Lock switch to lock in the new display option.

3. Enter the number 1 6 5 0 by pressing the corresponding product buttons. Unless this

code is entered, programming will not be accepted. This is to prevent unauthorized changes to your current instructions.

4. SP-r (Setpoint) will appear in the left LED display. Any previously programmed

temperature setpoint will appear in the right display. To change the setpoint, enter the desired setpoint temperature using the corresponding product buttons. The setpoint can be programmed for any value up to 212°F (100°C). Press the Program Mode in the new setpoint (or the old setpoint, if it was not changed).

1 6 5 8

by pressing the corresponding product buttons. Next, press

switch to lock

5. SELP (Select Product) will appear in the left display. Press the product button to be

programmed (or press to return to the normal operating mode).

6. COOC (Cook Time) will now show in the left display. Any previously programmed

cooking time will appear in the right display. Pressing time. To change the cooking time, enter the new time using the product buttons. The cook time can be programmed up to 59:59. Press

to lock in the new time.

3-6

will accept the current cooking

NOTE: The computer can be programmed for either “standard” or “slow” clock speed. The standard clock displays minutes and seconds, the slow clock displays hours and minutes. To toggle back and forth between clock speeds, press the Program Mode switch, then enter the code 1 6 5 3 using the product buttons.

To determine if the clock speed is set to standard or slow, initiate a cook cycle by pressing a product button. If the computer is set to the standard clock, the time in the LED display will immediately begin to count down. If it does not, the computer is set to the slow clock.

7. Sh1 (Stir Time 1) appears in the left display. If your product requires stirring during the

cooking process, set the number of seconds to cook before stirring using the product buttons. If your product does not require stirring, enter “0”. The number entered will appear in the right display. The stir time can be programmed up to 59:59, but cannot exceed the product cook time. Press to lock in the programmed time.

Sh2 will appear. Program the time of the second stir time as above. Be sure the time entered is greater than Sh1 or else is “0”.

Sh3 will appear. Program the length of the third stir time in the same manner as for Stir Times 1 and 2. Be sure that the time entered is greater than Sh2 or else is “0”.

For example, entering “30” means the product needs to be stirred after it has been cooking for thirty seconds. At the end of thirty seconds, an alarm will sound and the product switch will flash until cancelled by the operator pressing the product button.

CAUTION

Remember: Sh2 must be greater than Sh1 (or else be “0”). Sh3 must be greater than Sh2 (or else be “0”). None of the stir times can be greater than the cook time entered in

Step 6.

8. SELP (Select Product) will again appear in the left display. If more products are to be

programmed, follow Steps 5 through 8 for each additional product.

9. When you complete your programming, lock in the whole program by pressing the

Temperature Check/Program Lock Switch .

3.2.2 Operating the Computer

Turn the computer on by pressing the Power

in either LED Display indicates the unit is heating.

1. One of the following will normally be displayed:

switch. NOTE: A decimal between digits 1 and 2

a. °-Lo, indicating that the water temperature is 11°F (6°C) lower than the setpoint.

b. “- - - -” indicating that the water temperature is in the cooking range. NOTE: For best

results, cooking should not be attempted unless the display indicates “- - - -”.

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NOTE: You may also see one of these indicators of abnormal operation:

¾ °-Hi, indicating that the water temperature is 11°F (6°C) higher than the setpoint

¾ HELP, indicating a heating problem.

¾ Prob, indicating that the computer temperature probe circuit is open.

2. Press a product button to start a cook cycle.

a. The programmed cook time will appear and the countdown begins.

b. If stir times are programmed, the operator will be notified to agitate the product a

predetermined number of seconds after the cook cycle has begun. An alarm will sound, the display will read S t i r, and the LED in the product button will blink. To cancel the alarm, press the indicated product button.

If no stir times have been programmed, S t i r will not appear during the cook cycle.

CAUTION

Pressing the product button twice while the Sh alarm sounds will cancel the cook cycle as

well as the alarm.

c. At the end of the cook cycle, an alarm will sound, COOC will be displayed, and the

associated product button will flash. To cancel the alarm, press the flashing button.

3. To check the frypot temperature at any time, press the Temperature Check switch once. To

check the setpoint, press the switch twice. If you suspect the temperature probe is defective, check the temperature of the cookpot with a thermometer or pyrometer to verify that the computer readout is reasonably close to the measured reading.

4. During idle periods when the cooker is on but not in use, “- - - -” should appear in both displays,

indicating that the cookpot is at setpoint. If not, check the actual temperature and setpoint.

SELECTING FAHRENHEIT– CELSIUS DISPLAY MODE

1. The computer can display temperatures in either Fahrenheit or Celsius. To change from one to

the other, press the Program Mode Switch . CodE will appear in the left display.

2. Enter the code number 1 6 5 8 on the number keypad. The computer will toggle the

temperature display from Celsius to Fahrenheit or from Fahrenheit to Celsius.

3. Press the Temperature Check/Program Lock Switch to display the temperature in the newly

selected mode.

SELECTING STANDARD OR SLOW CLOCK

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The computer can be programmed for either “standard” or “slow” clock times. The standard clock displays minutes and seconds, the slow clock displays hours and minutes.

To toggle back and forth between times press the Program Mode switch, then enter the code

1 6 5 3 using the product buttons.

SELECTING BOIL OR SIMMER MODE

In the SIMMER mode, the water temperature is maintained at the setpoint programmed by the operator. In the BOIL mode, the water temperature is raised to 212°F (100°C).

Select the SIMMER mode by pressing the R button. If the temperature of the water is above the setpoint, °-hi will be displayed. If the temperature of the water is below the setpoint, °-lo will be displayed. If the temperature is within 11°F (6°C) of the setpoint, “- - - -” will be displayed.

The BOIL mode is selected by pressing the L button. The display will show

boil

and the

temperature of the water will be raised to 212°F (100°C).

3.2.3 Shutting the EWBS with CM III Computer Down

Turn the unit off by pressing the Power switch.

If shutting down at the end of the day, drain and clean the cookpot, and put the cookpot cover in place.

CAUTION

The electronic circuitry in your computer can be affected adversely by power fluctuations and electrical storms. If it fails to function or program properly for no apparent reason, try unplugging the computer from the interface board and plugging it back in. This could prevent a service call.

3.3 Thermostat Control and Switch Panel (Used on ESW and EWBS Units)

OFF

POWER

TROUBLE

BOIL

IDLE

SIMMER

HEAT CYCLE

OFF

FAUCET SKIM

OFF

165

5 5

2 0

2 1

THERMOSTAT CONTROL

SWITCH PANEL

CAUTION

If this is the first time the unit is being used after installation, refer to Section 3.4, Boil Out

Procedure.

3-9

On ESW units and EWBS units without CM III computers, a thermostat located inside the door maintains the simmer mode temperature. Rocker switches on the control panel turn the power on and off, control the heat cycle, and add water.

When the Power switch is placed in the ON position, the white power indicator will illuminate. If the unit is equipped with the AutoFill feature and the water level in the cookpot is below the upper water level sensor, the cookpot will immediately begin to fill with water. If the Heat Cycle switch is in the ON or SIMMER position, the heating element will energize as soon as the lower water level sensor is covered with water. Illumination of the red trouble light at anytime indicates that the highlimit safety has tripped. If the red trouble light illuminates, place the Power switch in the OFF

position immediately.

When the Heat Cycle switch is placed in the IDLE position, the heating element is de-energized, but power to the Faucet and Skim switches is maintained. Placing this switch in the SIMMER position maintains the water at the temperature indicated on the thermostat control dial. The switch is placed in the BOIL position for cooking product or reheating packaged sauces. A built in low-water safety feature prevents the heating element from being energized unless the lower water level sensor is covered with water, regardless of the position in which the switch is placed.

On units with the AutoFill feature, placing the Power switch to the ON position activates the feature, causing the water solenoid valve to open, adding water to the cookpot until the water level reaches the upper water level sensor. When the water reaches the upper sensor, the valve closes. As long as the switch is in the ON position, whenever the water level drops below the upper water level sensor, water will be automatically added to the cookpot. If the switch is placed in the OFF position, the AutoFill feature is disabled. On units without AutoFill, the cookpot must be manually filled by placing the faucet switch in the ON position. The switch must be placed in the OFF position to stop the water flow.

The Skim switch allows the operator to add water to the cookpot during the cooking cycle. This causes any accumulation of starch floating on the surface of the water to be washed down the overflow drain. Water will be added as long as the switch is in the ON position.

Turn the unit off by placing the Heat Cycle switch in the IDLE position and the Power switch in the OFF position. If shutting down at the end of the day, drain and clean the cookpot, and put the cookpot covers in place.

3.4 Boiling Out the Cookpot

The cookpot must be boiled out before first use.

1. Close the drain valve and fill the cookpot with a mixture of cold water and 1 cup of detergent.

2. Place the unit into operation. (See Section 3.1.2 for 8SMS, 8BC or 8C units. See Section 3.2.2

for EWBS units.)

3. Press the simmer switch,

solution to simmer for at least 1 hour.

on 8SMS, 8BC and 8C units or R

on EWBS units, and allow the

3-10

4. After the solution simmers for 1 hour, turn the unit off and add cold water until the solution is

cool. Drain the solution and clean the frypot thoroughly. Rinse the cookpot at least twice by filling with clean water and draining. Dry the cookpot thoroughly with a clean, dry towel.

3-11

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ELECTRIC COOKER MODELS 17EC, 17ECS, ESW AND EWBS

CHAPTER 4: PREVENTIVE MAINTENANCE

Daily Preventive Maintenance

It is normal for a coating of starch to form on the elements, sensors, and temperature probes during operation. If the coating is allowed to build-up, it will adversely affect the operation of the equipment. The preventive maintenance routines below should be performed at least daily to keep your equipment functioning at peak efficiency.

Inspect Equipment and Accessories for Damage

Look for loose or frayed wires and cords, leaks, foreign material in cookpot or inside cabinet, and any other indications that the equipment and accessories are not ready for safe operation.

Clean Cabinet Inside and Out

Clean inside the cabinet with a dry, clean cloth. Wipe all accessible metal surfaces and components to remove accumulations of oil, dust, or cooking residue.

Clean the outside of the cabinet with a clean cloth dampened with dishwashing detergent, removing oil, dust, or cooking residue.

DANGER

Never attempt to clean this equipment during the cooking process or when the

cookpot is filled with hot water and/or food products.

Clean Water-Level Sensors, Temperature Sensor, Element, and Cookpot

Turn the equipment off and drain the cookpot.

Clean the water level sensors (located in the front of the cookpot behind the sensor cover). Normally, a bottlebrush and a solution of detergent and water may be used to clean the sensors with the cover installed. If the sensors become coated with an unusually heavy layer of starch or lime, the cover may be removed to better access the sensors for cleaning using a Scotchbrite™ or similar abrasive pad and a solution of detergent and water.

Using a Scotchbrite™ or similar abrasive pad and a solution of detergent and water, clean the inside of the cookpot. Pay particular attention to the heating element.

Rinse the cookpot thoroughly with clean water at least twice.

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ELECTRIC COOKER MODELS 17EC, 17ECS, ESW AND EWBS

CHAPTER 5: OPERATOR TROUBLESHOOTING

5.1 Introduction

This chapter provides an easy reference guide to the more common problems that may occur during the operation of this equipment. The troubleshooting guides in this chapter are intended to help you correct, or at least accurately diagnose, problems with the equipment. Although the chapter covers the most common problems reported, you may very well encounter a problem not covered. In such instances, the Frymaster Technical Service Department will make every effort to help you identify and resolve the problem.

When troubleshooting a problem, always use a process of elimination starting with the simplest solution and working through to the most complex. Never overlook the obvious. Anyone can forget to plug a cord into a receptacle or open the valve on the water supply line. Don’t assume that you are exempt from such occurrences. Most importantly, try to establish a clear idea of why a problem has occurred. Part of your corrective action involves taking steps to ensure that it doesn’t happen again. Keep in mind that failure of a small component may often be indicative of potential failure or incorrect functioning of a more important component or system.

Some of the troubleshooting actions recommended in this chapter involve removing suspect controllers and substituting controllers that are known to be good, if they are available. Whenever this is indicated, refer to Section 5.3. Refer to Section 5.4 for instructions on replacing fuses in 17EC and 17ECS models.

If the troubleshooting and corrective actions in this chapter do not solve the problem, the problem is probably beyond the scope of most operators to solve and you should call your FASC for assistance. If you have doubts as to the proper action to take, do not hesitate to call the Frymaster Technical Service Department or your local Frymaster Factory Authorized Service Center for assistance.

Before calling a servicer or the Frymaster HOTLINE (1-800-551-8633):

• Verify that electrical cords are plugged in and that circuit breakers are on.

• Verify that water supply valves are open and that drain valves are fully closed.

DANGER

Hot water can cause severe burns. Never attempt to move a cooker containing hot

water or to transfer hot water from one container to another.

DANGER

Use extreme care when performing electrical circuit tests. Live circuits will be

exposed.

WARNING

Inspection, testing, and repair of electrical components should be performed only by

qualified service personnel. The equipment should be unplugged when servicing,

except when electrical tests are required.

5-1

5.2 Operator Troubleshooting Guide

PROBLEM PROBABLE CAUSES CORRECTIVE ACTION

A. No power to unit. A. Turn on circuit breaker. B. Master Power switch in

Controller does not activate.

Autofill does not add water.

Autofill does not shut off when the cookpot is full.

Water will not heat (controller is on, water is at normal level, but LO is not showing on the controller).

Water will not heat (water above lower water level sensor and LO is showing on the controller).

Water heats but does not boil.

Water boils in simmer mode.

Water temperature is too low in simmer mode.

Timer does not count down.

OFF position (17EC and 17ECS models only).

C. Controller not turned on. C. Push power switch. D. Blown fuse (17EC and

17ECS models only).

A. Water not turned on. A. Turn water on. B. Defective controller. B. Replace controller (see Section

A. Dirty upper water level

sensor.

B. Insufficient mineral

content in water.

C. Defective controller. C. Replace controller (see Section

A. Dirty low water level

sensor.

B. Insufficient mineral

content in water.

C. Defective controller. C. Replace controller (see Section

Defective controller. Replace controller (see Section 5.3).

Controller out of adjustment. Adjust controller in accordance with

A. Operator error. A. Push timer start switch

B. Defective controller. B. Replace controller (see Section

B. Place Master Power switch in ON

position.

D. Replace fuse (see Section 5.4)

5.3).

A. Clean sensor.

B. Add ⅛-cup baking soda to cookpot.

5.3).

A. Clean sensor.

B. Add ⅛ cup baking soda to cookpot.

5.3).

Section 3.1.3 (17EC/17ECS) or 3.2.2 (EWBS).

(17EC/17ECS) or a product button (EWBS with CM III controller).

5.3).

5-2

Troubleshooting Guide (Continued)

PROBLEM PROBABLE CAUSES CORRECTIVE ACTION

Autoskim does not

Defective controller. Replace controller (see Section 5.3). add water (Autofill operating correctly)

A. Blown fuse (17EC and

A. Replace fuse (see Section 5.4)

17ECS models only).

B. Roller jammed. B. Adjust roller.

Basket Lift does not function correctly.

C. Lifter rod jammed. C. Check for free movement.

Lubricate with white grease.

D. Defective controller. D. Replace controller (see Section

5.3).

E. Loose or misadjusted

microswitch.

E. Check switch adjustment. Adjust

as required.

5.3 Replacing the Controller (17EC/17ECS and EWBS with CM III Computer)

1. Disconnect the cooker from the electrical supply.

2. Remove the two screws in the upper corners of the control panel and swing the panel open

from the top, allowing it to rest on its hinge tabs.

3. Disconnect the wiring harness from the back of the controller.

4. Disconnect the ground wire from the controller. Remove the controller by lifting it from the

hinge slots in the frame.

5. Reverse the procedure to install a new controller.

Wiring Harness

Connection

Ground Wire

5-3

5.4 Replacing Fuses in 17EC and 17ECS Models

1. Disconnect unit from electrical power and remove the cover from the contactor box.

2. The 5-amp fuses are located on the left side of the box. The fuse for the controller is located

nearest the front of the box. Use a fuse puller to remove the blown fuse and install the replacement.

This fuse is for the controller.

Master Power Switch

Remove this screw and lift the

cover from the contactor box.

This fuse is for the basket lift.

3. Replace the component box cover, and reconnect the unit to the electrical power supply.

5-4

ELECTRIC COOKER MODELS 17EC, 17ECS, ESW AND EWBS

CHAPTER 6: 17EC/17ECS SERVICE PROCEDURES & PARTS

6.1 Functional Description

The 17EC Electric Cooker contains a 16.5-gallon (62.5-liter) stainless steel cookpot. The water in the cookpot is heated by a pair of 8.5-kilowatt heating elements. Electrical power to the elements is controlled by a solid-state SMS III Spaghetti Magic computer specifically modified for this application. NOTE: The SMS III computer used in the 17EC is identical in appearance to the SMS III computers used in other model lines, but differs internally. Use only P/N 106-0385 SMS III computers on this equipment. The 17EC is equipped with a basket lift, and also features automatic filling (AutoFill) and automatic skimming (AutoSkim). This model also has a swing-away jointed faucet. The 17ECS model has an attached 16.5-gallon (84.1-liter) rinse tank.

Turn the Master Power Switch ON and press the computer Power switch. A logic circuit checks the water level by looking for a ground at the upper water-level sensor. A normally closed solenoid valve opens if no ground is seen, indicating water is below the sensor, and water enters the cookpot. The unit enters the Simmer mode when the heating elements are covered (indicated by grounding of the low-water sensor). The cookpot continues to fill until water reaches the upper water-level sensor and the solenoid closes. The cooker stays in Simmer mode until the Boil mode switch is pressed or the unit is turned off. The water solenoid valve opens anytime the water level is below the upper water-level sensor.

Logic circuits in the computer monitor the temperature and cycle power on and off to maintain the simmer setpoint. (See Chapter 3 for instructions on adjusting the setpoint.) The cooker also has a high-limit safety. If the cookpot fails to refill and the water level drops below the low-water sensor, the high-limit will open, cutting off power to the elements, when the element temperature reaches 400 ±15ºF.

Pressing the Skim switch activates the AutoSkim feature. A logic circuit in the computer opens the solenoid valve in the water supply line for three seconds every minute until the option is turned off by again pressing the Skim switch.

The operator enters a cooking time by pressing the number pads on the computer. The computer counts down the cook cycle time when the Start switch is pressed. When the computer times out, an alarm sounds briefly, then the timer reverts to the last time entered.

Logic circuits in the computer also activate the basket lift motors when the Start switch is pressed, lowering the basket into the cookpot. A pair of motors drive the basket lift arms down until a cam attached to the left motor loses contact with a roller-activated microswitch and power to the motors is cut. When the computer times out, the logic circuits reverse the switch positions so that the motor circuit is again completed and the motors are restarted, raising the basket from the cookpot. The cam again makes contact with the microswitch at the raised position, cutting power to the motors and stopping the lift in the up position.

6-1

6.2 Accessing Equipment for Servicing

DANGER

Moving this equipment while it is filled with hot water may cause spilling or

splattering of the hot water. Always drain the cookpot before attempting to relocate

this equipment for servicing.

1. Disconnect the unit from the electrical power supply and from the water supply.

2. Remove any attached restraining devices.

3. Relocate the unit for service accessibility.

4. After servicing is complete, reconnect the unit to the water supply, reattach restraining devices,

and reconnect the unit to the electrical power supply.

6.3 Replacing Equipment Components

6.3.1 Replacing the Computer

See Section 5.3.

6.3.2 Replacing Electronic Components Other than the Computer

1. Drain the cookpot and disconnect the cooker from the electrical power supply.

2. Remove the covers from the component box. Refer to the illustration below to locate the

component to be replaced.

Solid State Relays

Delta Power Block

Fuse Blocks

and Fuses

Transformer

Master Power Switch

Contactor Block

Basket Lift Relay

3. On the component to be replaced, make a note of the wiring connection points.

4. Disconnect the wires and remove the failed component. Install the replacement component and

reconnect the wiring in accordance with the notes made in Step 3 or with the wiring diagram on the door of the unit.

6-2

5. Replace the component box covers, being sure to reconnect the ground wire. Reconnect the

cooker to the electrical power supply.

6.3.3 Replacing a Heating Element

1. Drain the cookpot and disconnect the cooker from the electrical power supply. Disconnect the

unit from the water supply at the rear of the cooker. Remove the basket lift arms from the unit.

2. Reposition the cooker to allow clear access to the rear of the unit. Remove the upper and lower

basket lift panels.

3. Unplug the element connector from the rear of the

component box. Depress the locking tabs on each side of the connector and extend the connector to release the element leads (see photo at right). Pull each of the leads out of the connector, being careful not to damage the connector in the process.

4. If the bundle of element leads is enclosed in a fiberglass

insulating sheath, cut the wire ties securing the sheath in place, and remove and discard it; it is no longer required. If replacing the left element (as viewed from the front of the cooker), cut the metal wire ties that secure the high-limit thermostat to the element, being careful not to bend the thermostat in the process.

5. Remove the brass nuts that secure the element in the cookpot and lift the failed element from the

cookpot. Recover the Teflon washers from the failed element for use on the replacement.

Remove these nuts to remove

element from cookpot.

Standoffs

6. Position the replacement element in the cookpot with the standoffs on the bottom of the cookpot.

Thread the element leads through the Teflon washers recovered from the failed element. Secure the element in place with the nuts removed in Step 5.

7. If the left element (as viewed from the front of the cooker) was replaced, secure the high-limit

thermostat against the inside of the leg of the element with two metal wire ties.

6-3

8. Insert the pins on the element leads into the element connector in accordance with the illustration

below. The insulation on the lead will be flush with the face of the plug when properly positioned. When all leads are positioned correctly, close the connector and verify that the tabs are locked in place. Each element lead is marked with a number that corresponds to the hole in the connector into which it should be inserted. The right element (as viewed from the rear of the unit) uses the 6-pin connector; the left element uses holes 1 through 6 of the 9-pin connector.

Note "D" pin and "pip" indentifying Hole 1.

Lead 1

Lead 3

Note "D" pin and rib indentifying Hole 1.

9. Bundle all six element leads together and secure with plastic wire ties close to the element and

connector, and in the middle.

10. Reverse Steps 1 through 3 to complete the procedure.

6.3.4 Replacing the High-Limit Thermostat

1. Drain the cookpot and disconnect the cooker from the electrical power supply. Disconnect the

unit from the water supply at the rear of the cooker. Remove the basket lift arms from the unit and cut the metal wire ties securing the thermostat tube to the element.

2. Reposition the cooker to allow clear access to the rear of the unit. Remove the upper and lower

basket lift panels.

3. At the rear of the cookpot, loosen the small compression nut, and then unscrew the large fitting

from the cookpot. Pull the thermostat tube out through the rear of the cookpot.

Loosen the small

compression nut first.

Unscrew the large fitting

only after loosening the small compression nut.

4. Detach the high-limit thermostat leads (5C and 8C) from the thermostat. Remove the two screws

securing the thermostat to the mounting bracket and remove the thermostat assembly from the cabinet. (NOTE: It is not necessary to remove the bracket.)

6-4

5. Loosen the small compression nut in the large fitting on the replacement thermostat so that the

large fitting will move freely on the capillary tube (the thin, flexible tube). Carefully insert the replacement thermostat into the cookpot, being careful not to bend the thermostat tube. Position the tube along the inside of the left leg of the element (as viewed from the front of the cooker) and secure it in place with two metal wire ties. Apply thread sealer to the large fitting and screw the fitting securely into the cookpot. When the large fitting is tight, pull gently on the capillary tube to remove any slack, then screw the small compression nut into the large fitting and tighten.

6. Coil the capillary tube as necessary to achieve a neat installation and attach the terminal block to

the mounting bracket using the screws removed in Step 4. Connect thermostat lead 5C (black) to the normally closed (NC) terminal and 8C (white) to the common (C) terminal.

Common (C) Terminal

(Note open side.)

Normally Closed (NC) Terminal

(Note closed side.)

7. Reverse Steps 1 and 2 to complete the procedure.

6.3.5 Replacing a Water-Level Sensor

Drain the cookpot and disconnect the cooker from the electrical power supply. Disconnect the sensor lead from the sensor, remove the nuts securing the sensor in place, and remove the sensor. Install the replacement sensor as illustrated below and reconnect the lead.

Insulator must seat in hole before nut is tightened.

Inside of cookpot.

6.3.6 Replacing the Temperature Probe

1. Drain the cookpot and disconnect the cooker from the electrical power supply.

2. Remove the three screws along the upper edge of the control panel and open the panel by

allowing it to swing downward.

3. Disconnect the 15-pin connector from the rear of the computer and, using a pin pusher (such as

Frymaster P/N 806-4855), push out the temperature probe (red and white) leads from positions 13 and 14 on the connector.

6-5

4. Remove the temperature probe by unscrewing it from the front of the cookpot.

5. Apply thread sealer to the replacement probe and screw it securely into the cookpot.

6. Insert the red probe lead into position 13 of the 15-pin connector and the white lead into position

14. Pull gently on each lead to ensure it is firmly seated.

Insert red lead into position 13.

Insert white lead into position 14.

7. Reattach the 15-pin connector to the rear of the computer, close the control panel, and replace the

three screws removed in Step 2.

6.3.7 Replacing the Pressure Regulator or Solenoid Valve

1. Drain the cookpot and disconnect the cooker from the electrical power supply. Turn off or

disconnect the water supply to the cooker.

2. Loosen the compression fittings on the water lines running to and from the regulator and remove

the regulator from the unit. (NOTE: If the cooker is equipped with the optional Autofill feature, the solenoid valve is installed between the regulator and the cookpot. If that is the case, disconnect the solenoid leads and remove both the regulator and solenoid valve from the unit.)

Optional Solenoid Valve

Compression Fitting

Regulator must be rotated

to clear drain plumbing.

6-6

3. If replacing the regulator, adjust the replacement regulator output pressure to not more than 40

PSI (28.15 kg/cm2) before installation in the cooker.

4. Recover the fittings from the failed component (regulator or solenoid valve) and install them on

the replacement, using thread sealer on all connections.

5. Reverse Steps 1 and 2 to complete the procedure, being sure to apply thread sealer to all

connections. NOTE: The regulator must be rotated approximately 45 degrees to clear the drain plumbing (see illustration at Step 2).

6.3.8 Replacing the Water Faucet

1. Drain the cookpot and disconnect the cooker from the electrical power supply.

2. Turn off the water supply to the cooker and disconnect the incoming water lines where they

attach to the stubs at the rear of the cooker.

3. Remove the two screws securing the access panel in place and remove the panel.

4. Disconnect the water supply line at the compression fitting where it attaches to the water inlet

manifold. Remove the screws from the faucet mounting plate and lift the faucet assembly from the unit.

Remove screws to remove the

faucet mounting plate.

Remove this nut to separate the

faucet from the mounting plate.

Loosen this nut to separate

the faucet from the water

Disconnect this

compression fitting.

inlet manifold.

5. Separate the faucet from the water inlet manifold and mounting plate as shown in the illustration

at Step 4.

6. Reverse Steps 1-5 to complete the procedure.

6.3.9 Replacing a Basket Lift Motor or Microswitch

1. Disconnect the cooker from the electrical power supply.

6-7

2. If rigid water connections have been used, disconnect the cooker from the incoming water

supply.

3. Remove the basket lift arms from the lifter rods and then reposition the cooker to gain access to

the rear. Remove the upper and lower basket lift rear panels.

4. Unplug the basket lift wiring harness from the lower 6-pin connector on the component box. (To

do this, you must reach around behind the component box from the front of the cooker.)

Disconnect basket lift wiring harness from this connector.

5. Disconnect the basket lift link from the lifter cam (bell crank) assemblies one at a time. When

the link is disconnected from a cam, slip the corresponding lifter rod down and out of the assembly (see illustration below).

Lifter Rods

Link

Disconnect the basket lift link from the lifter cams and slip the lifter rods down and out of the assembly.

6. Remove the four bolts securing the motor mount to the frame, then remove the motor and mount

assembly from the unit. NOTE: It is possible to replace a motor or the microswitch without removing the motor and mount assembly, but it is much more difficult.

7. Dismount the motor or microswitch as shown below and install the replacement.

NOTE:

The right motor dismounts

in the same way as the left.

8. Reverse Steps 1-7 to complete the procedure.

Loosen setscrew in bottom

of cam (bell crank).

6-8

6.3.10 Replacing the Cookpot or Rinse Tank

1. Remove the faucet assembly from the

cooker in accordance with Steps 1-4 of Section 6.3.8.

2. Remove the screws that secure each of the

rear corners of the backsplash assembly (see illustration at right). NOTE: To access the screw in the lower right corner (as viewed from the rear) remove the upper basket lift panel.

3. Remove the screws along the top edge of

the control panel and open the panel by swinging it downward. Disconnect the 15pin connector from the rear of the computer, and then lift the control panel out of the control panel frame.

4. Remove the screws that secure the

backsplash sides to the cabinet sides then remove the four screws that secure the topcap to the cabinet. Remove the nut and washer securing the basket support rod to the topcap by reaching up through the control panel frame. Conversely, the backsplash and topcap, with the basket support rod still attached, can be lifted up and off the cooker as one unit.

Remove these four screws.

Remove these

screws (on both

sides) to remove

backsplash and

topcap.

Remove these screws to

dismount the control panel.

5. Remove the screws attaching the standoff

brackets to the cookpot or rinse tank.

6. If removing the cookpot, unplug the element

wiring harnesses from the rear of the contactor box. Disconnect the high-limit thermostat leads and the water-level sensor leads. Using a pin-pusher (such as Frymaster P/N 806-4855), disconnect the temperature probe leads from the 15-pin connector.

7. Disconnect the union joining the cookpot

and rinse tank drain piping together.

8. With an assistant, lift the cookpot or rinse

tank straight up and out of the cabinet.

Remove these screws to release

the pots from the standoff brackets.

6-9

9. Invert the cookpot or rinse tank on a suitable work surface and remove the salvageable

components (e.g., elements, thermostats, drain plumbing, etc.). Install the recovered components on the replacement cookpot or rinse tank, using thread sealer on all connections.

10. Reverse Steps 1 through 8 to complete the procedure.

6.4 Troubleshooting

NOTE: 24VAC power to the electronic components of this system is controlled by the master

ON/OFF switch located on the front of the contactor box. If this switch is in the OFF position, none of the system components will function.

DANGER

The master ON/OFF switch does not disconnect this equipment from the electrical power source! Line voltage is supplied to the transformer and to the basket lift motors as long as the unit

is plugged in.

Problems with this equipment may be grouped into five broad categories:

1. Failure or malfunction of a 24VAC Power-Supply System component.

2. Failure or malfunction of the Computer.

3. Failure or malfunction of an Autofill/AutoSkim System component.

4. Failure or malfunction of a Water Heating System component.

5. Failure or malfunction of a Basket Lift System component.

Sections 6.4.1 through 6.4.5 briefly explain the functioning of each of the systems mentioned above. Section 6.4.6 contains troubleshooting guides that provide systematic procedures to isolate and identify the specific source of a problem. A wiring diagram is located at the end of the chapter.

6.4.1 How the Power-Supply System Works

Line voltage is supplied to the system via a power cord that is plugged or hard-wired into the store’s electrical service. The power cord is attached to a three-lug delta-power terminal block. One set of wires delivers line voltage from the load side of the block to Terminal 1 of each of the solid-state relays. A second set of wires delivers line voltage through a pair of 5-Amp fuses to the 24VAC transformer and to the basket lift relay. Line voltage for one side of the basket lift motor circuit is tapped from a “piggy-back” terminal on the line side of the transformer. Line voltage for the other side of the circuit is supplied via the basket lift relay. 24VAC is supplied to the equipment by placing the master ON/OFF switch in the ON position, which grounds the transformer.

6.4.2 How the Computer Works

The SMS III computer provides the interface between the operator and the system components. The computer is powered by 24VAC supplied through Pins 1 (hot) and 2 (ground) of the 15-pin wiring harness. Internal circuitry senses the water level, water temperature, and element temperature. Depending upon the conditions sensed, the computer energizes or de-energizes the solenoid valve to control water level and the heating elements to control water temperature. The computer also controls the lowering and raising of the basket lift, and activates an audible alarm to signal the operator that a cooking cycle has completed. A rectifier in the computer coverts 24VAC to the

6-10

24VDC required by the basket lift relay and the solid-state heating relays. The computer signals for heat via Pin 4, grounds the solenoid valve via Pin 6, and senses water level via Pins 7 (low) and 9 (full). The temperature probe connects to Pins 13 and 14. The basket lift relay connects to Pins 10 and 12. The sound device connects to Pin 11.

6.4.3 How the Autofill/AutoSkim System Works

The heart of the automatic filling (Autofill) system is a normally closed solenoid valve that opens when 24VAC is applied.

The ground for the solenoid is supplied (via Pin 6 of the computer wiring harness) so long as the upper water-level sensor is not in contact with the water in the cookpot. When the water in the cookpot reaches the upper water-level sensor, the sensor is grounded. This causes the computer to break the solenoid ground, closing the valve. Starch or lime build-up on the upper water-level sensor may keep a ground from forming, therefore always make sure the sensor is clean and its lead (Pin 9 of the computer wiring harness) is firmly connected. Also, in order for the ground to form, there must be some mineral content in the water (pure water is non-conductive). Consequently, the units will not operate with distilled water. If distilled, highly filtered, or purified water is used, add ⅛-cup of baking soda to the water each time the cookpot is emptied and refilled.

When the AutoSkim feature is activated by pressing the skim switch on the computer, a logic circuit in the computer automatically opens the solenoid valve for three seconds every minute until the switch is again pressed. If the Autofill feature is working properly, failure of the AutoSkim feature will be due to a malfunctioning computer and not the solenoid valve. (Proper operation of the Autofill feature can be determined by draining water from the cookpot until the water level is below the upper water-level sensor. If the solenoid valve opens and then closes when the water in the cookpot again reaches the upper water-level sensor, the Autofill feature is working properly.)

6.4.4 How the Water Heating System Works

To prevent energizing the heating elements when there is no water in the cookpot, these units are equipped with a low-water-level sensor. This sensor must be grounded by contact with water in the cookpot before the control circuitry will apply power to the elements. Starch or lime build-up on the low-water-level sensor may keep the ground from forming, therefore always make sure the sensor is clean and its lead (Pin 7 of the computer wiring harness) is firmly connected. In order for the ground to form, there must be some mineral content in the water (pure water is non-conductive). Consequently, the units will not operate with distilled water. If distilled, highly filtered, or purified water is used, add ⅛-cup of baking soda to the water each time the cookpot is emptied and refilled.

In addition to the low-water-level sensor discussed above, the water heating system has six more parts: the high-limit thermostat, the temperature probe, the contactor, the element, a group of three solid-state relays, and the computer.

The high-limit thermostat functions as a normally closed switch. If the water in the cookpot falls below the low-water-level sensor but the sensor remains grounded (for whatever reason), the highlimit switch will open when the element temperature reaches 400ºF ±15 (204ºC ± 9). This cuts power to the contactor coil and thus to the element.

6-11

The temperature probe is used only when the unit is in the simmer mode. When the operator selects the simmer mode, logic circuits in the computer monitor the temperature of the water and cycle power to the element on and off as required to maintain the temperature at the setpoint programmed into the computer.

The contactor is the terminal block to which the element leads are connected and where actual contact is made between the leads and the line voltage. Built into the contactor is a 24VAC coil that energizes when the master ON/OFF switch is placed in the ON position. When it energizes, contact is made between the incoming line voltage and the element leads, and line voltage is supplied to one side of the element circuit. The solid-state relays control the supply of line voltage to the other side of the element circuit. The relays are closed when the computer is calling for heat and open when it is not.

The element is a resistive heating device. That is, when voltage is applied to the element, the element gets very hot due to its resistance to current flow through it. The heat generated is transferred directly to the water in which the element is immersed.

The computer is the interface between the operator and the other components of the equipment. In the water heating system, its function is to control the application of line voltage to the heating element via the solid-state relays.

When in the Simmer Mode, the signal from the computer is continuous, the solid-state relays are continuously closed, and line voltage is applied to the elements until the simmer setpoint (195ºF/90.6ºC) is reached.

When in the Boil Mode, the signal from the computer is continuous for approximately the first 40 seconds, then changes to a series of on-off pulses of equal duration. The solid-state relays close and open in response to the signal from the computer, and line voltage is applied to the elements accordingly. (The pulsing of the line voltage to the elements prevents the water in the cookpot from reaching a vigorous, roiling boil. This, in turn, minimizes the formation of starch foam. An added benefit of the pulsing is reduced electrical power consumption.)

6.4.5 How the Basket Lift System Works

When the Start switch is pressed to start the cooking cycle, logic circuits in the computer activate the basket lift motors, lowering the basket into the cookpot. As the motors drive the basket lift arms down, a cam attached to the left motor eventually loses contact with a roller-activated microswitch and power to the motors is cut. When the computer times out, logic circuits reverse the switch positions so that the motor circuit is again completed and the motors are restarted, raising the basket from the cookpot. At the fully raised position, the cam again makes contact with the microswitch, cutting power to the motors and stopping the lift in the up position.

6-12

6.4.6 Technician Troubleshooting Guides

TROUBLESHOOTING THE 24VAC POWER SUPPLY SYSTEM

Verify that the power cord is

properly connected to the electrical service and that

the circuit breaker is not

tripped.

Place the master ON/ OFF switch in the ON

position.

Was there an

audible snap from the

contactor indicating the

coil energized?

Yes

The primary indicator of a problem with the 24VAC Power Supply System is a failure of the computer to activate when the master ON/OFF switch is placed in the ON position and the computer ON/OFF switch is pressed.

24VAC Power Supply

System is OK.

Is 24VAC present

across Pins 1and 2

of the 15-pin connector

on the front of the

contactor box?

Is line voltage

present on the line side of

the transformer?

Check 5-amp transformer

fuse. Replace if blown. If fuse

is OK, cause is loose or broken

wiring, or the electrical service

circuit is dead.

Causes are broken or loose wiring

or a failed contactor. If wiring and

Yes

connections are verified to be intact,

replace contactor.

Yes

Is 24VAC

present on the load side of

the transformer?

Transformer has failed. Replace.

Yes

master ON/OFF switch in ON position.

Verify continuity of

Replace switch as required.

If switch is OK, causes are broken

or loose wiring. Check connections and

replace wiring as required.

6-13

TROUBLESHOOTING THE 24VAC POWER SUPPLY TO THE COMPUTER

Place the master ON/

OFF switch in the OFF

postion, then back in

the ON postion. Press

the ON/OFF switch on

the computer.

Did the computer activate?

Yes

Was there an

audible snap from the

contactor indicating the

coil energized?

Yes

Is 24VAC present across Pins 1 and 2 of the wiring

harness?

Yes

24VAC is reaching

computer.

There is a problem in

the 24VAC Power Supply

System. Refer to the

troubleshooting guide on

Page 6-14.

Cause is a loose or broken wire in

the wiring harness.

6-14

TROUBLESHOOTING THE AUTOFILL SYSTEM

Verify that unit is connected to the water supply and that water supply

is turned on.

Drain the water in the cookpot to a

level below the upper water-level

sensor.

Place the master ON/OFF switch

in the ON position.

Press the computer ON/OFF

switch.

Did unit

begin to fill?

and thoroughly clean

Remove the water-

level sensor guard

the sensors.

Did unit

begin to fill?

Is voltage across

Pins 2 and 6 of computer

15-pin connector zero?

Check sensor and wiring.

If they are NOT grounded,

the computer has failed.

If they ARE grounded, repair

or replace as required.

Replace.

Yes

Did water

shut off when water

reached the upper water-level

sensor?

Yes

Autofill system is OK.

Yes

If 24VAC is

across Pins 2 and 3 of the

contactor box 15-pin connector,

check connections and wiring to

solenoid valve. If wiring and

connections are intact, the valve

2 and 6 of the computer

NOT

present

has failed. Replace.

Yes

Is 24VAC

present across Pins

15-pin connector?

Check resistance

through Pins 2 and 9 of

the computer 15-pin

connector. If it is less than 1

ohm, the computer has failed.

If it is 1 ohm or greater, repair

Replace.

wiring between sensor and

computer or replace

sensor as required.

6-15

TROUBLESHOOTING THE WATER HEATING SYSTEM

Each of the following checks is to be performed with the unit connected to the electrical power supply, with the computer ON and calling for heat, and with at least enough water in the cookpot to cover the lower water-level sensor.

CHECKING THE

HIGH-LIMIT

THERMOSTAT

Is resistance

between Pins 5 and

8 of the 15-pin plug

1 ohm or less?

Yes

High-limit is OK.

CHECKING THE

SOLID-STATE RELAYS

AND ELEMENTS

(24VAC Power Supply

verified to be OK..)

High-limit has

failed. Replace.

CHECKING

THE TEMPERATURE

PROBE

(Because water boils in

Simmer Mode or water

is too cool in Simmer

Mode.)

Adjust controller in

accordance with instructions

in Section 3.1.3.

If this does not correct the

problem, continue.

Check probe resistance between Pins 13 and 14. Resistance should be: Approx 552 ohms @ 60ºF (16ºC) Approx 655 ohms @ 100ºF (38ºC) Approx 1000 ohms @ 212ºF (100ºC) Check resistance between each pin and ground. Resistance on BOTH should be 2 mega-Ohms or greater.

Are BOTH readings within specification?

Probe is open or is shorted. Replace.

Place the master ON/

OFF switch in OFF

position then back in

the ON position.

With the computer

calling for heat, is voltage across

the input terminals of the relay zero

with line voltage across the output terminals?

AND

With the computer NOT calling for heat, is

voltage across the input terminals of

the relay 5-10VDC with no

voltage across the

output terminals?

Yes

Solid-state relays are OK.

Ohm out elements (Pins 1 & 6,

2 & 5, 3 & 4). If resistance

is NOT 15 ±3 Ohms, the element

has failed. Replace.

Relay has failed.

Replace.

Computer is OK. No

Yes

Probe is OK.

CHECKING THE

COMPUTER

(24VAC Power Supply

verified to be OK.)

Yes

Is 27-33VDC present at Pin 4 of the 15pin plug when computer is

calling for heat?

Yes

Computer has

failed. Replace.

6-16

TROUBLESHOOTING THE BASKET LIFT SYSTEM

TROUBLESHOOTING

THE BASKET LIFT

Is 5-Amp

fuse in the

component box

OK?

Yes

With the basket lift

in the UP position, is 27-33VDC

present at Pin 10 of 15-pin plug (0

volts if in DOWN position)?

Yes

If the basket lift motors are activating, but the basket lift fails to raise or lower, or if its movement is erratic, the probable cause is jamming or binding of the basket lift rods. Apply a light-weight white grease (such as

Lubriplate

) to the rods. If this does not correct the problem, check for bent or otherwise damaged rods and links, and for loose bellcranks.

Replace fuse.No

Computer has failed.

Replace.

With the basket lift

in the UP position, is 27-33VDC

present at relay terminal A

(0 volts if in DOWN

position)?

Yes

With the basket lift

in the UP position, is line voltage present at the NC (lower) terminal of the microswitch (middle terminal if in

DOWN position)?

Yes

With the basket lift in the same

position as for the previous check, is

line voltage present at the Common

terminal of the switch?

Yes

Cause is failed/loose

wiring. Inspect and

repair wiring as

required.

Relay has failed.

Replace.

Switch has failed.

Replace.

Motor has failed.

Replace.

6-17

THIS PAGE INTENTIONALLY

LEFT BLANK.

6-18

6.5 Parts List

ACCESSORIES

ITEM PART # COMPONENT

1 823-2939 Cooking Basket 2 823-2936 Starch Diverter 3 803-0268 Basket Support Rack * 210-5068 Pan Insert 4 910-7540 Cookpot/Rinse Tank Top Connecting Strip 5 823-2938 Rinse Basket 6 826-0900 Chain Restraint Kit 7 826-1117 Caster without Brake, 5-Inch (includes mounting hardware) 8 826-1118 Caster with Brake, 5-Inch (includes mounting hardware)

6-19

BASKET LIFT COMPONENTS

23 24 25

6-20

ITEM PART # COMPONENT

1 823-2007 Arms, Basket Lift 2 910-7420 Top, Basket Lift Enclosure 3 911-7417 Side, Basket Lift Enclosure Right 4 912-7417 Side, Basket Lift Enclosure Left 5 900-7421 Support, Basket Lift Rod Bushing 6 826-1363 Screw, 8-32 x ½-inch Slotted Truss Head (Pkg of 25) 7 902-1927 Bracket, Left Basket Lift Roller 8 901-1927 Bracket, Right Basket Lift Roller

9 809-0247 Nut, 8-32 Hex Keps 10 809-0508 Bolt, ¼ -20 x 1 ¼-inch Hex Head SS 11 810-0194 Roller, Basket Lift 12 809-0047 Nut, ¼-20 SS Hex Cap 13 809-0082 Ring, ¾-inch Truarc 14 810-0045 Bushing, Basket Lift Rod 15 807-0108 Motor, 240VAC Basket Lift 16 900-7416 Mount, Basket Lift Motor 17 809-0113 Screw, 8-32 x 1 ½-inch Slotted Truss Head 18 809-0050 Nut, 8-32 Hex 19 812-0138 Insulation, Motor Mount (Fishpaper) 20 807-0240 Microswitch 21 809-0097 Screw, 6-32 x 1-inch Slotted Truss Head 22 826-1358 Nut, 6-32 Hex (Pkg of 25) 23 810-0052 Cam (Bellcrank), Basket Lift 24 809-0194 Washer, 5/16-inch SAE Flat 25 809-0196 Washer, ⅜-inch SAE Flat 26 809-0063 Nut, Jam 3/8-16 Hex 27 826-1381 Washer, ½-inch ID x ⅞-inch OD Nylatron Flat (Pkg of 10) 28 910-4525 Bar (Link), Basket Lift Synchronizing 29 809-0155 Screw, 5/16-18 x ⅝-inch Leveling 30 826-1370 Screw, ¼-20 x 1 ¼-inch Slotted Round Head (Pkg of 10) 31 809-0076 Nut, ¼-20 x ¾-inch Expansion 32 920-6076 Link, Basket Lift 33 810-0170 Pin, ¼-inch x ⅝-inch Spring Dowel 34 810-0192 Rod, 19 ⅝-inch Basket Lift 35 809-0127 Screw, ¼-20 x ½-inch Slotted Round Head 36 809-0719 Screw, #10 x ½-inch 410SS 37 900-7418 Panel, Upper Basket Lift Rear 38 900-7419 Panel, Lower Basket Lift Rear 39 807-0124 Bushing, Heyco 40 810-0220 Spacer, Tubular, .493-inch OD

6-21

CABINETRY

Showing Attached

Detail of Backsplash

Components

6-22

ITEM PART # COMPONENT

1 210-0815 Channel, Front or Rear Base

* 806-5209 Leg Pad Assembly (on bottom of Item 1, for mounting casters)

2 210-0816 Channel, Side Base

3 900-7198 Post, Door

4 900-1552 Gusset (Corner Brace)

5 900-7389 Brace, Top Rear

6 900-7390 Brace, Top Front

7 900-7391 Divider, Cabinet

8 Side, Left or Right Cabinet

910-7377 Stainless Steel

900-7377 Cold Rolled Steel (Painted) 9 900-7422 Back, Cabinet * 826-1374 Screw, #10 x ½-inch Hex Washer Head (large cabinet screw) (Pkg of 25)

10 900-1750 Panel, Plumbing Access

* 826-1371 Screw, #8 x ½-inch Hex Head (access panel screw)

11 900-4645 Shield, Heat 12 210-0007 Backsplash 13 210-0215 Plate, Faucet Mounting

* 809-0740 Screw, #10 x ½-inch Phillips Truss Head (faucet plate and topcap screw)

14 810-1838 Rod, Basket Pivot 15 809-0200 Washer, ½-inch Flat 16 809-0063 Nut, ⅜-16 Jam 17 824-0801 Topcap 18 806-5487 Frame, Control Panel 19 823-2946 Panel, Control 20 806-9744 Door Assembly, Left or Right (does not include handle or hinges) 21 810-1402 Handle, Wire Form Door

* 809-0266 Screw, #10 x ½-inch Phillips Truss Head (door panel and handle screw)

22 810-1508 Hinge, Universal Door 23 210-0817 Shield, Left Moisture 24 210-0818 Shield, Right Moisture 25 910-4831 Bracket, Basket Lift Roller 26 809-0508 Bolt, ¼-20 x 1 ¼-inch Hex Head 27 810-0374 Spacer, Basket Lift Roller Tubular 28 810-0194 Roller, Basket Lift 29 809-0190 Washer, ¼-inch SS Flat 30 809-0047 Nut, ¼-20 Hex Head Cap 31 809-0127 Screw, ¼-20 x ½-inch Slotted Round Head 32 803-0028 Hanger, Basket (for wire-form hanger use 810-2229) 33 809-0171 Thumbscrew, Basket Hanger 34 826-1351 Retainer, ¼-20 Nut (Nutsert) (Pkg of 10)

* Not illustrated.

6-23

COOKPOT, RINSE TANK, AND DRAIN COMPONENTS

Mounting Hardware

Detail of High-Limit Thermostat

21 22 23

17 18 19

5 6

6-24

ITEM PART # COMPONENT

1 823-2937SP Cookpot Assembly (for 17EMCS (McDonald’s), use 823-3827SP) 2 823-1994SP Rinse Tank Assembly 3 806-7552SP Water Level Sensor Assembly 4 900-5045 Retainer, Cookpot Front Insulation * 816-0152 Insulation, Cookpot Front (behind Item 4) 5 900-1762 Retainer, Insulation 6 826-1376 Nut, 10-32 Hex Head Keps (Pkg of 10) 7 807-3333 Probe, Temperature 8 210-0681 Guard, Temperature Probe 9 807-2466 Thermostat, High-Limit

10 807-3814 Element, 208V 8.625kW (for 230V, use 807-3815; for 240V, use 807-3816) 11 810-0976 Nozzle 12 N/A Guard, Water Level Sensor (part discontinued; no longer used) 13 809-0047 Nut, ¼-20 Cap (secures Item 12 on units built before February 2001) 14 813-0451 Nipple, 1 ¼-inch NPT x 12-inch Chromed Brass 15 813-0453 Nut, 1 ¼-inch NPT Chromed Stainless Steel Slip 16 813-0148 Nipple, 1 ¼-inch NPT x 6 ¼-inch NPT 17 813-0070 Elbow, 1 ¼-inch NPT 90º 18 813-0400 Nipple, 1 ¼-inch NPT x 2-inch

* 813-0391 Nipple, 1 ¼-inch NPT Close (connects cookpot drain valve and Item 19)

19 813-0394 Tee, 1 ¼-inch NPT 20 813-0146 Nipple, 1 ¼-inch NPT x 4 ¼-inch 21 813-0518 Nipple, 1 ¼-inch NPT x 4-inch 22 813-0395 Union, 1 ¼-inch NPT 23 813-0144 Nipple, 1 ¼-inch NPT x 3 ¾-inch 24 813-0554 Nipple, 1 ¼-inch NPT x 7-inch 25 814-0047 Sleeve, Red Drain Valve Handle 26 910-9527 Handle, Drain Valve 27 810-1825 Valve, 1 ¼-inch NPT Drain 28 823-2022 Strainer 29 910-2042 Clamp, Element 30 910-5214 Support, Element 31 910-2097 Bracket, High-Limit 32 809-0769 Screw, #8 X ⅜-inch S/S Hex Washer Slot Head

* 809-0204 Washer, Teflon (fits between Item 10 and inside face of Cookpot) * 809-0063 Nut, ⅜-16 Jam (secures Drain Valve Handle to Drain Valve)

* Not illustrated.

6-25

ELECTRONICS

7 8

1716

10 11

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15

1C BLK 2C BLK 3C BLK 4C BLK 5C BLK 6C BLK 7C BLU

8C WHT

9C BLU 10C BLK 11C BLK 12C BLK

15C WHT

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15

38 39

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15

21C ORG

22C GRN/YLW

23C BRN 24C ORG 25C ORG 26C RED

28C BRN

30C RED

32C BRN

1 2 3 4 5

7 8 9

1 2 3 4 5 6

1H BLK 2H BLK 3H BLK 4H BLK 5H BLK 6H BLK6

41C WHT 42C WHT

43C BLK

42 43

1 2

3 4 5 6

1 2 3 4 5 6

1H BLK 2H BLK 3H BLK 4H BLK 5H BLK 6H BLK

51C WHT 52C WHT

53C BLK

6-26

ITEM PART # COMPONENT

* 106-0385 Computer, 17ECS * 824-0856 Starch Shield (mounts to back of control panel to protect computer) 1 807-1555 Fuse, 5 Amp 2 807-1308 Holder, Fuse 3 809-0328 Screw, 4-40 x ¼-inch Slotted Pan Head 4 809-0237 Nut, 4-40 Hex Head Keps 5 807-0680 Transformer, 208-240VAC/24VAC 50/60Hz 43VA 6 807-3996 Relay, 75 Amp 280V SPST-NO Solid State * 815-0554 Compound, Heatsink (GC Thorsen 10-8109) 7 807-0037 Tab, Faston 6.35 (.250) Series 8 809-0096 Screw, 6-32 x ⅝-inch Binding Slotted Head

9 807-1396 Relay, 24VDC SPDT 10 809-0102 Screw, 8-32 x ⅜-inch Slotted Truss Head 11 809-0247 Nut, 8-32 Hex Head Keps 12 807-2082 Switch, Non-Illuminated Rocker 13 802-1793A Label, ON/OFF 14 810-1202 Contactor, 3 Pole 600VAC 40 Amp 15 807-2464 Block, Delta Power 16 807-0070 Terminal, Ground Lug 17 802-0742B Label, Ground 18 807-2749 Heatsink 19 900-2752 Plate, Cordset 20 900-5895 Top, Triac Contactor Box 21 809-0359 Screw, #8 x ¼-inch Slotted Hex Washer Head 22 200-0008 Box, Triac Contactor 23 900-5785 Rear, Triac Contactor Box 24 900-8239 Rear, Split Triac Contactor Box 25 809-0117 Screw, 10-32 x ⅜-inch Slotted Truss Head 26 200-0180 Brace, Contactor Box Rear 27 200-0181 Brace, Contactor Box Front 28 826-1374 Screw, #10 x ½-inch Hex Head 29 900-5445 Cover, Contactor Box Front 30 200-0001 Bracket, Connector 31 807-0804 Connector, 15-pin Male 32 807-0875 Connector, 15-pin Female (Panel Mount) 33 807-2135 Connector, 6-pin High-Amp Male 34 807-2136 Connector, 6-pin High-Amp Female 35 807-2137 Connector, 9-pin High-Amp Male 36 807-2138 Connector, 9-pin High-Amp Female 37 806-3660 Sound Device, High-Output 38 106-0144 Harness, Computer to Contactor Box 15-pin Wiring 39 106-0158 Harness, Contactor Box Internal 15-pin Wiring 40 106-0157 Harness, Element to Contactor 9-pin Wiring 41 106-0156 Harness, Element to Contactor 6-pin Wiring 42 106-0159 Harness, Basket Lift Relay 6-pin Wiring 43 106-0160 Harness, Basket Lift to Contactor Box 6-pin Wiring

* Not illustrated.

6-27

WATER SUPPLY SYSTEM COMPONENTS

7 8

ITEM PART # COMPONENT

1 810-0907 Elbow, ⅜-inch NPT Compression 2 910-2513 Tubing, Solenoid Valve to Cookpot ⅜-inch Stainless Steel 3 806-5565 Valve Assembly, 24VAC 60Hz Solenoid 4 813-0302 Elbow, ⅜-inch Tube to ¼-inch NPT 90º Brass Male 5 813-0472 Nipple, ¼-inch NPT x 2.5-inch Brass 6 900-1905 Mount, Solenoid Valve 7 813-0022 Nipple, ½-inch NPT x Close 8 809-0454 Nut, ½-inch Conduit

9 810-1208 Valve, Pressure Regulator 10 900-1898 Tube, ⅜-inch Water Line 11 813-0449 Tee, ¼-inch NPT Brass 12 813-0448 Elbow, ¼-inch NPT 90º Brass 13 813-0473 Nipple, ¼-inch NPT x 4-inch Brass 14 813-0412 Faucet, Double Jointed Pantry

* 826-1132 Kit, Faucet Repair (contains two valve assemblies)

* Not illustrated.

6-28

6.6 Wiring Diagram (17ECS)

ALL READINGS REFERENCED TO GRO UND WITH THE COMPUTER OP ERATING

COMPUTER CONTROL

27-33vdc WHEN OFF

WHEN HEATING

GROUND WHEN

NOT FILLING

24vac WHEN

FILLING

24vac GND

HOT COM

POWER IN

21 3 5641079 14131211 15

BLK

NO VOLTAGE

HEAT

WATER

FILL

BLK

OPTIONAL

SOLENIOD

24 VAC

15C WHT

BLK

AUTOFILL

CNC

HI LIMIT

WHT

BLK

BASKET LIFT

WHT

47C

BLK

TYPE 5AMP

TRANSFORMER

48C

59C WHT

58C BLK

57C

WHT

COM

LINE

250V 4500A

L2L3 L1

BLK

46C

BLK

44C

VARISTOR

WHT

42C

45C

BLK

WHT BLK

41C

43C

UP POSITION

BASKET LIFT

WHT

52C

132

456

MOTORS

COM

WHT

51C

GEAR

BLK

53C

SHOWN IN

BLU

DO NOT MEASURE

WATER LEVEL

PROBES

BASKET DOWN

BASKET UP

0 VOLTS

27-33vdc

BASKET LIFT

27-33vdc

RELAY

ON WATER TEMP.

DEPENDING

2-3vdc

SOUNDING

WHEN

3-5v

PROBE

TEMP.

NO VOLTAGE

BLU

12 4 653 987 10 11 12 151413

YLW

ORG

BLK

10C

BLK

12C

RED

BLK11C

RED

WHT

HIGH WATER SENSOR

SOUND DEVICE

LOW WATER SENSOR

LOAD

RED

68C

ORG

23C

21C

ORG

BRN

GRN/

22C

24C

26C

60C

RED

ORG

25C

BRN

28C

RED

30C

BRN

32C

5H4H6H

897

456

RED

RELAY 24vdc

RED

63C

132

61C

62C

4 +3

RED

67C

456

64C BLK

BLK65C

BLK66C

132

L R

8051288C

PROBE

6-29

6.7 Wiring Diagrams (17EMCS)

6-30

6-31

THIS PAGE INTENTIONALLY LEFT BLANK.

ELECTRIC COOKER MODELS 17EC, 17ECS, ESW AND EWBS

CHAPTER 7: ESW & EWBS SERVICE PROCEDURES & PARTS

7.1 Functional Description

The ESW series was the predecessor to the EWBS series. Both cookers are very similar in

construction and function. The cookers in the ESW series have rocker-switch controls only. These

cookers were configured as single units or as batteries of two units. The primary difference between

the two configurations is in the piping of the Autofill water supply system and the lack of the basket

lift and computer options on ESW units.

Cookers in the EWBS series may be configured with computer controls or with the rocker-switch

controls as used on the ESW cookers. E1WBS models consist of a single cooker. E2WBS models

consist of two single units battered together.

All models feature a 16.5-gallon (62.5-liter) stainless steel cookpot. The water in the cookpot is

heated by a 13-kilowatt heating element. Optional features include a swing-away jointed faucet and

automatic filling and skimming features (Autofill and Autoskim).

Units with Manual Controls (rocker-switches and a thermostat)

When the POWER switch is placed in the ON position, the white POWER indicator next to the

switch illuminates. If the red TROUBLE indicator illuminates at any time, there is a problem with

the high-limit thermostat. The unit will not heat until the problem with the high-limit thermostat has

been resolved. Anytime the POWER switch is in the ON position, logic circuits in the interface

board check for the presence of water in the cookpot. These circuits look for grounding of the water

level sensors caused by their contact with water in the cookpot.

If the interface board senses that the cookpot is not full, (i.e., the upper water level sensor is not in

contact with water) it signals the normally closed solenoid valve on the water supply line to open.

When the interface board senses that water level in the cookpot is full, (i.e., water contacts the upper

water-level sensor), it signals the solenoid valve to close. Anytime the water level in the cookpot

drops below the upper water-level sensor, the interface board signals the solenoid valve to open to

refill the cookpot to the proper level.

When the HEAT CYCLE switch is placed in either the BOIL or the SIMMER position, if water is in

contact with the lower water level sensor, the interface board signals the contactor coil to close,

energizing the heating element. If the switch is placed in the SIMMER position, the interface board

closes or opens the contactor coil (and thus energizes or de-energizes the element) to maintain the

water in the cookpot at the temperature set with the thermostat knob. If the switch is placed in the

BOIL mode, the element remains energized until the switch is placed in the IDLE or the SIMMER

mode. If the switch is placed in the IDLE mode, power is supplied to all components of the unit

except the heating element. The Autofill feature, the faucet switch, and the skim switch are

functional anytime the power switch is in the ON position, regardless of the position of the heat

cycle switch.

7-1

NOTE: The cooker has a high-limit safety. If the water in the cookpot falls below the low-waterlevel sensor but the sensor remains grounded for whatever reason (thereby allowing the element to continue to heat), the high-limit switch will open when the element temperature reaches 400 ±15ºF. This cuts off power to the element.

Units with Computer Controls

When the computer POWER switch is pressed, a logic circuit in the computer checks the water level in the cookpot. A normally closed solenoid valve on the water supply line automatically opens if the upper water-level sensor is not grounded by contact with water in the cookpot. Water will continue to be added until the upper water level sensor is grounded by contact with water in the cookpot. If there is sufficient water in the cookpot to cover the heating element (i.e., the lower water level sensor is grounded by contact with water in the cookpot), the computer signals the contactor coil to close, thereby energizing the heating element. If the temperature of the water in the cookpot is below the cooking setpoint temperature programmed into the computer, -ºlo appears in the computer’s LED display. If the temperature of the water in the cookpot is within 11ºF (6ºC) of the programmed

setpoint, “- - - -” appears in the computer’s LED display.

If the SIMMER mode is selected by pressing the R button, logic circuits in the computer monitor the temperature of the water and cycle power to the element on and off to maintain the temperature at the setpoint programmed into the computer. (See Chapter 3 for instructions on adjusting the setpoint.) If the BOIL mode is selected by pressing the L button, the heating element remains continuously energized until the SIMMER mode is again selected.

The Autoskim feature is activated by placing the SKIM switch in the ON position. When the feature is activated, a logic circuit in the computer automatically opens the solenoid valve in the water supply line for three seconds every minute until the option is turned off by placing the switch in the OFF position.

On units equipped with faucets, the faucet is turned on by placing the FAUCET switch in the ON position. This opens a dedicated normally closed solenoid valve on the faucet water line. The solenoid valve remains open until the switch is placed in the OFF position.

When a product button is pressed to initiate a cooking cycle, the programmed cook time appears in the LED display and begins to count down. When the specified cook time has elapsed, an audible alarm sounds and the associated product button flashes. Simultaneously, logic circuits in the computer activate the appropriate basket lift motor, lowering the basket into the cookpot. As the motor drives the basket lift arm down, a cam attached to the motor eventually loses contact with a roller-activated microswitch and power to the motors is cut. When the computer times out, logic circuits reverse the switch positions so that the motor circuit is again completed and the motor is restarted, raising the basket from the cookpot. At the fully raised position, the cam again makes contact with the microswitch, cutting power to the motor and stopping the lift in the up position.

7-2

7.2 Accessing Equipment for Servicing

DANGER

Moving this equipment while it is filled with hot water may cause spilling or

splattering of the hot water. Always drain the cookpot before attempting to relocate

this equipment for servicing.

1. Disconnect the unit from the electrical power supply and from the water supply.

2. Remove any attached restraining devices.

3. Relocate the unit for service accessibility.

4. After servicing is complete, reconnect the unit to the water supply, reattach restraining devices,

and reconnect the unit to the electrical power supply.

7.3 Replacing Equipment Components

7.3.1 Replacing the Computer

See Section 5.3.

7.3.2 Replacing Electronic Components Other than the Computer

1. Drain the cookpot and disconnect the cooker from the electrical power supply.

2. Remove the cover from the component box. Refer to the illustration below to locate the

component to be replaced.

Power Block

24V Transformer (all units)

24V Transformer (units w/Basket Lifts only)

Contactor

3. On the component to be replaced, make a note of the wiring connection points.

4. Disconnect the wires and remove the failed component. Install the replacement component and

reconnect the wiring in accordance with the notes made in Step 3 or with the wiring diagram on the door of the unit.

5. Replace the component box cover, being sure to reconnect the ground wire. Reconnect the

cooker to the electrical power supply.

7-3

7.3.3 Replacing the Heating Element

1. Drain the cookpot and disconnect the cooker from the electrical power supply. Disconnect the

unit from the water supply at the rear of the cooker. Remove the basket lift arms from the unit.

2. Reposition the cooker to allow clear access to the rear of the unit. Remove the cabinet back (on

units with basket lifts, remove all three back panels).

3. Unplug the 6-pin element connector from the rear of the

contactor box. Depress the locking tabs on each side of the

connector and extend it to release the element leads (see

photo at right). Pull each of the leads out of the connector,

being careful not to damage the connector in the process.

4. If the bundle of element leads is enclosed in a fiberglass

insulating sheath, cut the wire ties securing the sheath in

place, and remove and discard it; it is no longer required.

Inside the cookpot, cut the metal wire ties that secure the

high-limit thermostat to the element, being careful not to

bend the thermostat in the process.

5. Remove the brass nuts that secure the element in the cookpot and lift the failed element from the

cookpot. Recover the Teflon washers from the failed element for use on the replacement.

Remove these nuts to dismount

element from cookpot.

Standoffs

6. Position the replacement element in the cookpot with the standoffs on the bottom of the cookpot.

Thread the element leads through the Teflon washers recovered from the failed element. Secure

the element in place with the nuts removed in Step 5.

7. Secure the high-limit thermostat against the inside of the leg of the element with two metal wire

ties.

8. Insert the pins on the element leads into the element connector in accordance with the illustration

on the following page. Each element lead is marked with a number that corresponds to the hole

in the connector into which it should be inserted. The insulation on the lead will be flush with

the face of the plug when properly positioned. When all leads are positioned correctly, close the

connector and verify that the tabs are locked in place.

7-4

Hole 6

Lead 1

Note D-shaped pin and "pip" identifying Hole 1.

9. Bundle all six element leads together and secure with plastic wire ties close to the element and

connector, and in the middle.

10. Plug the connector into the contactor box. Reverse Steps 1 and 2 to complete the procedure.

7.3.4 Replacing the High-Limit Thermostat

1. Drain the cookpot and disconnect the cooker from the electrical power supply. Disconnect the

unit from the water supply at the rear of the cooker. If the unit is equipped with basket lifts, remove the basket lift arms. Cut the metal wire ties securing the thermostat tube to the element.

2. Reposition the cooker to allow clear access to the rear of the unit. Remove the cabinet back (on

units with basket lifts, remove all three back panels).

3. At the rear of the cookpot, loosen the small compression nut, then unscrew the large fitting from

the cookpot. Pull the thermostat tube out through the rear of the cookpot.

Loosen the small

compression nut first.

Unscrew the large fitting

only after loosening the small compression nut.

4. Detach the high-limit thermostat leads (5C and 8C) from the thermostat. Remove the two screws

securing the thermostat to the mounting bracket and remove the thermostat assembly from the cabinet. (NOTE: It is not necessary to remove the bracket.)

5. Loosen the small compression nut in the large fitting on the replacement thermostat so that the

7-5

6. Coil the capillary tube as necessary to achieve a neat installation and attach the terminal block to

the mounting bracket using the screws removed in Step 4. Connect thermostat lead 5C (black) to

the normally closed (NC) terminal and 8C (white) to the common (C) terminal.

Common (C) Terminal

(Note open side.)

Normally Closed (NC) Terminal

(Note closed side.)

7. Reverse Steps 1 and 2 to complete the procedure.

7.3.5 Replacing a Water-Level Sensor

Insulator must seat in hole before nut is tightened.

Inside of cookpot.

7.3.6 Replacing the Operating Thermostat or Temperature Probe

Units with Manual (Thermostat) Controls

1. Drain the cookpot and disconnect the cooker from the electrical power supply.

2. Disconnect the rocker-switch wires from the terminals of the thermostat body.

3. Loosen the Allen screw in the thermostat control knob and slip the knob off the thermostat shaft.

Remove the two screws securing the thermostat body to the mounting bracket and remove the

thermostat body from the mounting bracket.

4. At the cookpot, loosen the small nut in the center of the temperature probe fitting, then unscrew

the fitting from the cookpot. Inside the cookpot, remove the probe cover, push the probe out of

its retaining bracket, and withdraw the probe from the cookpot.

5. Verify that the small nut in the center of the replacement temperature probe fitting is loose and

that the fitting spins easily around the capillary tube. Pass the thermostat bulb through the hole

in the cookpot and position it under the lower portion of the retaining bracket.

7-6

6. Carefully work any slack in the capillary tube back out of the hole in the cookpot. Apply thread

sealer to the threads of the replacement temperature probe fitting and screw the fitting into the cookpot. When the fitting is tight, verify that all slack in the capillary has been worked back

out of the cookpot and that the bulb is correctly positioned under the lower portion of the retaining bracket. Then, and only then, tighten the small nut in the center of the fitting. NOTE:

Tightening the small nut crimps the internal compression fitting onto the capillary and prevents any further movement of the capillary through the large fitting.

Tighten the small

compression nut last.

Tighten the large fitting

before tightening the

small compression nut.

7. Position the thermostat body in the mounting bracket with the terminals to the left and reinstall

the two screws removed in Step 3. Reinstall the thermostat knob.

8. Reconnect rocker-switch wires 20C and 35C to the lower terminal of the thermostat body;

reconnect wire 15C to the top terminal. Reinstall the probe cover to complete the procedure.

Attach wire15C here.

Attach wires 20C and 35C here.

Units with Computer Controls

1. Drain the cookpot and disconnect the cooker from the electrical power supply.

2. Remove the screws from the upper corners of the control panel and open the panel by allowing it

to swing downward.

3. Disconnect the 12-pin connector from the interface board and, using a pin pusher, push out the

temperature probe leads from holes 6 and 8 on the connector.

4. Remove the temperature probe by unscrewing it from the front of the cookpot.

5. Apply thread sealer to the replacement probe and screw it securely into the cookpot.

6. Insert the probe leads into holes 6 and 8 of the 12-pin connector (there is no polarity; either lead

may be inserted into either hole [see illustration at top of next page]). Pull gently on each lead to ensure it is firmly seated.

7-7

Note D-shaped pin and

rib identifying Hole 1.

Hole 6

Hole 8

7. Reattach the 12-pin connector to the interface board, close the control panel, and replace the two

screws removed in Step 2.

7.3.7 Replacing the Pressure Regulator or Solenoid Valve

1. Drain the cookpot and disconnect the cooker from the electrical power supply. If necessary,

reposition the cooker to allow free access to the component to be replaced. Turn off or

disconnect the water supply to the cooker. If replacing an Autofill system pressure regulator or

solenoid valve on a unit equipped with basket lifts, the basket lift upper rear panel must be

removed.

2. Loosen the compression fittings on the water lines running to and from the regulator or solenoid

valve and remove the component from the unit. (NOTE: If the solenoid valve is mounted

adjacent to the regulator, disconnect the solenoid leads and remove both the regulator and

solenoid valve from the unit.)

TYPICAL WATER SUPPLY SYSTEM CONFIGURATIONS

Double Unit without

Basket Lifts

Single Unit without

Basket Lifts

Single Unit with

Basket Lifts

3. If replacing a regulator, adjust the replacement regulator output pressure to not more than 40 PSI

(28.15 kg/cm

) before installation in the cooker.

4. Recover the fittings from the failed component (regulator or solenoid valve) and install them on

the replacement, using thread sealer on all connections.

5. Reverse Steps 1 and 2 to complete the procedure, being sure to apply thread sealer to all

connections.

7-8

7.3.8 Replacing the Water Faucet

1. Drain the cookpot and disconnect the cooker from the electrical power supply.

2. Turn off the water supply to the cooker and disconnect the incoming faucet water line where it

attaches to the pipe nipple at the pressure regulator. Reposition the cooker to gain clear access to the rear of the cooker.

3. Remove the cabinet back (or, if the unit is equipped with basket lifts, remove the upper rear

panel).

4. Disconnect the water supply line at the compression fitting where it attaches to the faucet

assembly. Remove the large nut to dismount the faucet assembly from the cabinet.

Remove this nut to dismount

faucet assembly from cabinet.

Loosen this nut to separate

water line from faucet assembly.

5. Reverse Steps 1-4 to complete the procedure.

7.3.9 Replacing a Basket Lift Motor or Microswitch

1. Disconnect the cooker from the electrical power supply, disconnect the cooker from the

incoming water supply, and remove the basket lift arms from the lifter rods.

2. Remove the screws from the upper corners of the control panel and open the panel by allowing it

to swing downward. Unplug the basket lift wiring harness from the 5-pin connector on the interface board.

3. Reposition the cooker to gain access to the rear. Remove all three panels from the rear of the

basket lift housing, and disconnect the lifter rods from the lifter cams (bell cranks). Slip the lifter rods down and out of the assembly.

Lifter Rod

Remove the leveling screw, bushing,

and washer, then slip the lifter rod down

and out of the assembly.

7-9

4. Remove the four bolts securing the motor mount to the frame, then remove the motor and mount

assembly from the unit. NOTE: It is possible to replace a motor or the microswitch without

removing the motor and mount assembly, but it is much more difficult.

5. Dismount the motor or microswitch as shown below and install the replacement.

NOTE:

The right motor and microswitch

dismount in the same way as the left.

Loosen setscrew in bottom

of cam (bell crank).

6. Reverse Steps 1-4 to complete the procedure.

7.3.10 Replacing the Cookpot

1. Drain the cookpot and disconnect the unit from the electrical power supply.

2. If so equipped, remove the faucet assembly from the cooker in accordance with Steps 1-4 of

Section 7.3.8.

3. Remove the screws from the upper corners of the control panel and open the panel by swinging it

downward.

On units with manual (thermostat) controls:

a. Disconnect the water level sensor leads at the cookpot terminals. Disconnect all wiring from

the control panel switches and light, and then remove the control panel from the unit.

b. Unplug the 4- and 6-pin connectors from the interface board. Disconnect all wiring from the

terminal block mounted next to the interface board.

c. Remove the interface board bracket from the unit.

d. Remove the temperature probe from the cookpot in accordance with Steps 4 through 6 of

Section 7.3.6 (Units with Manual (Thermostat) Controls).

e. Remove the thermostat mounting bracket with thermostat attached.

On units with computer controls:

a. Disconnect the water level sensor leads at the cookpot terminals. Disconnect all wiring to the

Skim switch (and to the Faucet switch, if present). Unplug the 15-pin connector from the rear of the computer, and then remove the control panel from the unit.

7-10

b. Unplug the 5- and 12-pin connectors from the interface board. Do not disconnect the water

level sensor leads from the interface board.

c. Remove the interface board bracket from the unit. d. Using a pin pusher, push out the temperature probe leads from holes 6 and 8 on the 12-pin

connector.

4. Disconnect the Autofill water supply piping at the cookpot compression fitting.

5. Remove the screws that secure the topcap to the cabinet and remove the topcap from the unit.

On double units, remove the cookpot connecting strip.

6. Remove the screws attaching the standoff brackets to the cookpot.

Remove these screws

7. Unplug the element wiring harnesses from the rear of the contactor box. Disconnect the high-

limit thermostat leads from the thermostat body. Remove the screws securing the backsplash to the cabinet and remove the backsplash.

8. With an assistant, lift the cookpot straight up and out of the cabinet. DO NOT ATTEMPT TO

REMOVE THE COOKPOT WITHOUT ASSISTANCE!

9. Invert the cookpot on a suitable work surface and remove the salvageable components (e.g.,

insulation, element, thermostats, drain plumbing, etc.). Install the recovered components on the replacement cookpot or rinse tank, using thread sealer on all connections.

10. Reverse Steps 1 through 8 to complete the procedure, referring to the wiring diagram on the door

of the unit or at the end of this chapter when reconnecting wiring.

7-11

7.4 Troubleshooting

Problems with this equipment may be grouped into five broad categories:

1. Failure or malfunction of a 24VAC Power-Supply System component.

2. Failure or malfunction of a Control System component.

3. Failure or malfunction of an Autofill/Autoskim System component.

4. Failure or malfunction of a Water Heating System component.

5. Failure or malfunction of a Basket Lift System component (on units so equipped).

Sections 7.4.1 through 7.4.5 briefly explain the functioning of each of the systems mentioned above. Section 7.4.6 contains troubleshooting guides that provide systematic procedures to isolate and identify the specific source of a problem. Wiring diagrams are located at the end of the chapter.

7.4.1 How the Power-Supply System Works

Line voltage is supplied to the system via a power cord that is plugged or hard-wired into the store’s electrical service. The power cord is attached to a three-lug power terminal block. One set of three wires delivers line voltage from the load side of the block to the line side of the contactor. A second set of two wires delivers line voltage to the 24VAC transformer. Line voltage for the heating element is delivered from the load side of the contactor through the 6-pin connector on the rear of the contactor box. 24VAC for the remaining components is distributed to and from the contactor box via the 15-pin connector on the front of the box.

On units with basket lifts, a separate set of two wires delivers line voltage from the terminal block to the basket lift 24VAC transformer. From the transformer, the 24VAC is delivered to the interface board via the 12-pin connector on the interface board. Line voltage for one side of the basket-liftmotor circuits is delivered directly to the motors from the terminal block via the 15-pin connector on the front of the contactor box. Line voltage for the other side of the basket-lift-motor circuits is supplied via the basket lift relays mounted on the interface board through the 5-pin connector on the interface board. All line and 24VAC power except the line voltage for the elements is distributed to and from the contactor box via the 15-pin connector on the front of the box.

7.4.2 How the Computer Works

The CM III computer provides the interface between the operator and the system components. 24VAC from the transformer is supplied through Pin 7 of the 9-pin connector on the interface board. The 24VAC is rectified to 12VDC and delivered to the computer via Pins 1 and 3 of the 15-pin connector. Internal circuitry senses the water temperature. Depending upon the conditions sensed, the computer energizes or de-energizes the heating element (via the contactor coil) to control water temperature. The computer also controls the lowering and raising of the basket lifts, and activates an audible alarm to signal the operator that a cooking cycle has completed. The computer signals for heat via Pin 4 of the 15-pin connector. The temperature probe connects to Pins 13 and 14 of the 15pin connector. The basket lift relays connect to Pins 7 (right) and 9 (left), and the sound device connects to Pin 11 of the 15-pin connector.

7-12

7.4.3 How the Autofill and Skim Systems Work

The heart of the automatic filling (Autofill) system is a normally closed solenoid valve that opens

when 24VAC is applied as a result of the loss of upper water-level sensor ground. The ground is lost

when the sensor is not in contact with water in the cookpot. Starch or lime build-up on the sensor

may keep a ground from forming. Therefore always make sure the sensor is clean and its lead is

firmly connected to Pin 1 of the 6-pin connector on the interface board (units with manual controls)

or connector J5 on the interface board (units with computer controls). Also, in order for the ground

to form, there must be some mineral content in the water (pure water is non-conductive).

Consequently, the units will not operate with distilled water. If distilled, highly filtered, or purified

water is used, add ⅛-cup of baking soda to the water each time the cookpot is emptied and refilled.

In units with manual controls, the 24VAC is supplied via Pins 1 and 2 of the 4-pin connector on

the interface board so long as the upper water-level sensor is not in contact with the water in the

cookpot. In units with computer controls, 24VAC is continuously supplied to one leg of the

circuit via Pin 6 of the 15-pin connector on the front of the contactor box. The other leg is supplied

via Pin 2 of the 12-pin connector on the interface board so long as the upper water-level sensor is not

in contact with water in the cookpot. In either case, when the water in the cookpot reaches the upper

water-level sensor, the sensor is grounded. This causes logic circuits in the interface board to cut the

24VAC to the solenoid, closing the valve.

If the SKIM switch is placed in the ON position, the logic circuits in the interface board are

bypassed and 24VAC is applied to the solenoid valve for as long as the switch is left in the ON

position.

7.4.4 How the Water Heating System Works

To prevent energizing the heating elements when there is no water in the cookpot, these units are

equipped with a low-water-level sensor. This sensor must be grounded by contact with water in the

cookpot before the control circuitry will apply power to the elements. Starch or lime build-up on the

low-water-level sensor may keep the ground from forming, therefore always make sure the sensor is

clean and its lead is firmly connected to J5 on the interface board. In order for the ground to form,

there must be some mineral content in the water (pure water is non-conductive). Consequently, the

units will not operate with distilled water. If distilled, highly filtered, or purified water is used, add

⅛-cup of baking soda to the water each time the cookpot is emptied and refilled.

In addition to the low-water-level sensor discussed above, the water heating system has six more

parts: the high-limit thermostat, the temperature probe, the contactor, the element, and a HEAT

CYCLE switch and manual thermostat, or a computer.

The high-limit thermostat functions as a normally closed switch. If the water in the cookpot falls

below the low-water-level sensor but the sensor remains grounded (for whatever reason), the high-

limit switch will open when the element temperature reaches 400ºF ±15 (204ºC ± 9). This cuts

power to the contactor coil and thus to the element.

The temperature probe is used only when the unit is in the simmer mode. When the operator

selects the simmer mode, logic circuits in the on the interface board or in the computer monitor the

temperature of the water and cycle power to the element (via the contactor coil) on and off as

7-13

required to maintain the temperature at the setpoint programmed into the computer or set on the thermostat knob.

The contactor is the terminal block to which the element leads are connected and where actual contact is made between the leads and the line voltage. Built into the contactor is a 24VAC coil that energizes when signaled by the computer or interface board that the water temperature is below the setpoint. When it energizes, contact is made between the incoming line voltage and the element leads, and line voltage is supplied to the element.

The element is a resistive heating device. That is, when voltage is applied to the element, it gets very hot due to its resistance to current flow through it. The heat generated is transferred directly to the water in which the element is immersed.

In units with manual controls, the three-position HEAT CYCLE switch controls how power is supplied to the element. When the switch is in the:

• IDLE position, no power is supplied to the element at any time.

• BOIL position, power is supplied to the element continuously until the switch is placed in

another position.

• SIMMER position, power to the element cycles on if the water temperature is below the

temperature indicated by the thermostat knob. When the temperature reaches that indicated by the thermostat knob, power to the element cycles off. This process continues until the switch is placed in another position.

In units equipped with a computer, the computer is the interface between the operator and the other components of the equipment. It controls the application of line voltage to the heating element via the contactor. There are two modes of operation:

Simmer Mode, the signal from the computer is continuos and line voltage is applied to the

elements until the simmer setpoint programmed into the computer is reached, at which time the

signal ceases.

Boil Mode, the signal from the computer is continuous ceasing only when the unit is turned off

or placed in the simmer mode.

7.4.5 How the Basket Lift System Works

When a product button is pressed to start the cooking cycle, logic circuits in the computer activate the appropriate basket lift motor, lowering the basket into the cookpot. As the motor drives the basket lift rod down, a cam attached to the motor eventually loses contact with a roller-activated microswitch and power to the motor is cut. When the computer times out, logic circuits reverse the switch positions so that the motor circuit is again completed and the motor is restarted, raising the basket from the cookpot. At the fully raised position, the cam again makes contact with the microswitch, cutting power to the motor and stopping the lift in the up position.

7-14

7.4.6 Technician Troubleshooting Guides

TROUBLESHOOTING THE 24VAC POWER SUPPLY SYSTEM

Verify that the power cord is

properly connected to the electrical service and that

the circuit breaker is not

tripped.

On units with manual

controls, place the

POWER switch in the

ON position.

On units with computer

controls, place the

ON/OFF switch in the

ON position.

Was there an

audible snap from the

contactor indicating the

coil energized?

Yes

24VAC Power Supply

System is OK.

The primary indicator of a problem with the 24VAC Power Supply System is a failure of the power light to illuminate when the POWER switch is placed in the ON position or the failure of the computer to activate when the computer ON/OFF switch is pressed.

Is 24VAC present

across Pins 4, 5, and 6

of the 15-pin connector

on the front of the

contactor box?

Is line voltage

present on the line side of

the transformer?

Cause is loose or broken wiring, or the electrical service circuit is

dead.

Causes are broken or loose wiring

or a failed contactor. If wiring and

Yes

connections are verified to be intact,

replace contactor.

Yes

Is 24VAC

present on the load side of

the transformer?

Transformer has failed. Replace.

Yes

In units with manual controls, verify the

continuity of the POWER switch in the ON

position. Replace switch as required.

If the switch is OK, causes are broken

or loose wiring. Check connections and

replace wiring as required.

7-15

TROUBLESHOOTING THE AUTOFILL SYSTEM

Verify that unit is connected to the water supply and that water supply

Drain the water in the cookpot to a

level below the upper water-level

In units with computers, press the

is turned on.

sensor.

Place the POWER switch in the

ON position.

computer ON/OFF switch.

Did unit

begin to fill?

Remove the water-

level sensor guard

and thoroughly clean

the sensors.

Yes

Did unit

shut off when water

reached the upper water-level

sensor?

Did unit

begin to fill?

Is 24VAC present on

Pins 1 and 2 of the IFB

4-pin connector (manual controls)

Pin 2 of the IFB 12-pin

connector (computer

controls)?

Yes

Check connections and wiring to solenoid valve. If wiring and

connections are intact, the valve

has failed. Replace.

Is 0 voltage present

on Pins 1 and 2 of the IFB

4-pin connector (manual controls)

Pin 2 of the IFB 12-pin

connector (computer

controls)?

Check sensor and wiring. If they are NOT grounded,

the IFB has failed. Replace.

If they ARE grounded, repair

or replace as required.

Check sensor and wiring.

If they ARE grounded,

the IFB has failed. Replace.

If they are NOT grounded,

clean, repair or replace as

required.

Yes

Autofill system is OK.

Yes

Solenoid valve has

failed. Replace.

7-16

TROUBLESHOOTING THE WATER HEATING SYSTEM

Each of the following checks is to be performed with the unit connected to the electrical power supply, with the unit ON and calling for heat, and with at least enough water in the cookpot to cover the lower water-level sensor.

CHECKING THE

HIGH-LIMIT

THERMOSTAT

Is resistance

between outside

terminals

1 ohm or less?

Yes

High-limit is OK.

CHECKING THE

ELEMENT

(24VAC Power Supply

verified to be OK..)

With sufficient water in the cookpot to cover the

heating element, place the POWER switch in the ON position and the CYCLE switch in the

SIMMER position, OR press the computer ON/

OFF switch to the ON position.

High-limit has

failed. Replace.

CHECKING

THE TEMPERATURE

PROBE

(on units with computers

because water boils in

Simmer Mode or water is

too cool in Simmer Mode.)

Check probe resistance between Pins 6 and 8 on IFB 12-pin connector. Resistance should be: Approx 552 ohms @ 60ºF (16ºC) Approx 655 ohms @ 100ºF (38ºC) Approx 1000 ohms @ 212ºF (100ºC) Check resistance between each pin and ground. Resistance on BOTH should be 2 mega-Ohms or greater.

Are BOTH readings within specification?

Yes

Probe is OK.

Probe is open or is shorted. Replace.

Was there an

audible snap indicating the

contactor coil

energized?

Yes

Ohm out elements (Pins 1 & 6,

2 & 5, 3 & 4). If resistance

is NOT 15 ±3 Ohms, the element

has failed. Replace.

Is 24VAC present on the CYCLE switch

on Pin 4 of the 15-pin

connector on

the IFB.

Yes

Probable causes,

in order of probabilty,

are failed switch or

contactor.

Probable causes, in

order of probabilty, are

failed computer or IFB.

Thermostat is open or

is shorted. Replace.

CHECKING

THE THERMOSTAT

(on units with manual

controls.)

Set thermostat knob to OFF position. Check resistance across terminals. Resistance should be infinite.

Set thermostat to its highest setting. Check resistance across terminals. Resistance should be less than 1 ohm.

Are BOTH

readings correct?

Yes

Thermostat

is OK.

7-17

TROUBLESHOOTING THE BASKET LIFT SYSTEM

TROUBLESHOOTING

THE BASKET LIFT

With the basket lift

in the UP position, is 27-33VDC

present at Pin 7 or 9 of IFB 15-pin

connector (0 volts if in DOWN

position)?

Yes

With the basket lift

in the UP position, is line voltage present at the NC (lower) terminal of the microswitch (middle terminal if in

DOWN position)?

) to the rods. If this does not correct the problem, check for bent or otherwise damaged rods and links, and for loose bellcranks.

Computer has failed.

Replace.

IFB has failed.

Replace.

Yes

With the basket lift in the same

position as for the previous check, is

line voltage present at the Common

terminal of the switch?

Yes

Motor has failed.

Replace.

Switch has failed.

Replace.

7-18

7.5 Parts List

ACCESSORIES

ITEM PART # COMPONENT

1 823-1910 Basket, Bulk Cooking, Full Size (cannot be used with basket lifts) 2 806-7569 Cover 3 910-2545 Strainer Board 4 824-0587 Cookpot Top Connecting Strip (used on double units only) 5 Cup, Single Portion

803-0018 Beige

803-0260 White 6 823-2754 Basket, Bulk Cooking, Half Size (for use with basket lifts) 7 910-2766 Pan Insert 8 810-1008 Hose, Water Supply, with Quick Disconnect Fittings (Swirl) 9 810-1463 Hose, Water Supply, with Quick Disconnect Fittings

10 803-0155 Basket, Sauce Packet 11 803-0234 Brush, Probe Cleaning 12 803-0233 Rack, Basket Support 13 826-1117 Caster without Brake, 5-Inch (includes mounting hardware) 14 826-1118 Caster with Brake, 5-Inch (includes mounting hardware) 15 826-0900 Chain Restraint Kit

* 803-0259 Rack, 4 Portion Cups (for use with basket lifts) * 803-0218 Rack, 9 Portion Cups (cannot be used with basket lifts)

* Not illustrated.

7-19

BASKET LIFT COMPONENTS

7-20

ITEM PART # COMPONENT

1 823-2753 Arm, Right Basket Lift (as viewed from front of unit) 2 823-2752 Arm, Left Basket Lift (as viewed from front of unit) 3 910-7420 Top, Basket Lift Enclosure 4 911-7417 Side, Basket Lift Enclosure Right 5 912-7417 Side, Basket Lift Enclosure Left 6 900-7421 Support, Basket Lift Rod Bushing 7 826-1363 Screw, 8-32 x ½-inch Slotted Truss Head (Pkg of 25) 8 902-1927 Bracket, Left Basket Lift Roller 9 901-1927 Bracket, Right Basket Lift Roller

10 809-0247 Nut, 8-32 Hex Keps 11 809-0508 Bolt, ¼ -20 x 1 ¼-inch Hex Head SS 12 810-0194 Roller, Basket Lift 13 809-0047 Nut, ¼-20 SS Hex Cap 14 809-0082 Ring, ¾-inch Truarc 15 810-0045 Bushing, Basket Lift Rod 16 807-0108 Motor, 240VAC Basket Lift 17 900-7416 Mount, Basket Lift Motor 18 809-0113 Screw, 8-32 x 1 ½-inch Slotted Truss Head 19 809-0050 Nut, 8-32 Hex 20 826-1358 Nut, 6-32 Hex (Pkg of 25) 21 812-0138 Insulation, Motor Mount (Fishpaper) 22 807-0240 Microswitch 23 809-0097 Screw, 6-32 x 1-inch Slotted Truss Head 24 810-0052 Cam (Bellcrank), Basket Lift 25 809-0194 Washer, 5/16-inch SAE Flat 26 809-0196 Washer, ⅜-inch SAE Flat 27 809-0063 Nut, Jam 3/8-16 Hex 28 810-0220 Spacer, Tubular, .493-inch OD 29 809-0203 Washer, ½-inch ID x ⅞-inch OD Nylatron Flat (Pkg of 10) 30 809-0155 Screw, 5/16-18 x ⅝-inch Leveling 31 826-1370 Screw, ¼-20 x 1 ¼-inch Slotted Round Head (Pkg of 10) 32 809-0076 Nut, ¼-20 x ¾-inch Expansion 33 920-6076 Link, Basket Lift 34 810-0170 Pin, ¼-inch x ⅝-inch Spring Dowel 35 810-0192 Rod, 19 ⅝-inch Basket Lift 36 807-0124 Bushing, Heyco 37 809-0127 Screw, ¼-20 x ½-inch Slotted Round Head 38 809-0719 Screw, #10 x ½-inch 410SS 39 900-8063 Panel, Upper Basket Lift Rear 40 900-7995 Panel, Middle Basket Lift Rear 41 900-7419 Panel, Lower Basket Lift Rear

7-21

CABINETRY

disproportionately large for clarity.

NOTE: Items 33 through 38 are shown

7-22

ITEM PART # COMPONENT

1 Side, Left or Right Cabinet

910-7377 Stainless Steel

900-7377 Cold Rolled Steel (Painted) 2 910-2914 Side, Double Unit Inner Cabinet 3 900-5023 Back, Cabinet 4 824-0633 Backsplash (units without basket lifts) 5 810-0044 Plug, ⅞-inch (used on units without basket lifts or faucets) 6 823-2105 Backsplash (used on units with basket lifts) 7 910-8355 Cover, Backsplash Top (used on basket lift units without faucet) 8 910-8060 Cover, Backsplash Top (used on basket lift units with faucet) 9 910-8058 Restrictor, Faucet Rotation (used on basket lift units with faucet)

10 900-1759 Bracket, Pot Hold Down 11 900-4654 Brace, Top 12 900-1552 Gusset (Corner Brace) 13 806-5260 Frame, Control Panel 14 910-7541 Topcap 15 823-2351 Topcap, Plate-Width (used on double units only) 16 900-2762 Support, Plate-Width Topcap 17 809-0266 Screw, #10 x ½-inch Phillips Truss Head (door panel and handle screw) 18 810-1402 Handle, Wire Form Door 19 806-3853 Door Assembly, Left or Right (does not include handle or hinges) 20 806-4487 Door Pin Assembly 21 810-1508 Hinge, Universal Door

* 826-1343 Spring, Door Hinge (Pkg of 10)

22 810-1105 Magnet, Door 23 806-5209 Leg Pad Assembly 24 900-7528 Channel, Left or Right Side Base 25 900-4655 Channel, Front or Rear Base 26 826-1374 Screw, #10 x ½-inch Washer Hex Head (Pkg of 25) 27 900-8273 Moisture Shield 28 816-0091 Grommet, 1¼-inch Drain 29 900-4645 Shield, Heat 30 910-5137 Plate, Battering (4.7-inch x 1.2-inch with 4 holes) 31 910-3122 Plate, Battering (10-inch x 1.2-inch with 6 holes) 32 910-0404 Plate, Battering (2-inch x 2-inch with 4 holes) 33 910-4831 Bracket, Basket Lift Roller

* 809-0127 Screw, ¼-20 x ½-inch Slotted Round Head (for mounting Item 33)

34 809-0508 Bolt, ¼-20 x 1 ¼-inch Hex Head 35 810-0374 Spacer, Basket Lift Roller Tubular 36 810-0194 Roller, Basket Lift 37 809-0190 Washer, ¼-inch SS Flat 38 809-0047 Nut, ¼-20 Hex Head Cap 39 810-2229 Hanger, Basket (replaced extruded aluminum hanger 803-0028, which is no longer available.) 40 809-0171 Thumbscrew, Basket Hanger 41 826-1351 Retainer, ¼-20 Nut (Nutsert) (Pkg of 10)

* Not illustrated.

7-23

CONTROL COMPONENTS

ITEM PART # COMPONENT

1 809-0250 Nut, 6-32 Hex Head Keps 2 806-9100 Computer, CM III (for use on EWBS units only) 3 823-2760 Panel, Computer Control with Two Cutouts 4 823-2770 Panel, Computer Control with One Cutout 5 910-2454 Panel, Manual (Thermostat) Control 6 807-0495 Light, Red and White Split, 24V 7 807-2479 Switch, ON-OFF-ON Rocker (Non-Illuminating) 8 807-2082 Switch, ON-OFF Rocker (Non-Illuminating)

9 807-2273 Switch, ON-OFF Rocker (Non-Illuminating) 10 806-9413 Bracket, Interface Board Mounting 11 809-0238 Nut, 4-40 Hex Head 12 809-0360 Screw, #8 x ⅜-inch Washer Slotted Hex Head 13 810-1164 Block, Screwless Terminal 14 809-0354 Screw, 4-40 x ¾-inch Slotted Pan Head 15 Interface Board

806-6505 For use on units with manual (thermostat) controls.

806-9295 For use on units with computer. 16 809-0250 Nut, 6-32 Hex Head Keps 17 807-2272 Thermostat, Operating 18 900-5026 Bracket, Thermostat Mounting 19 810-0387 Knob, Control

* 802-1432C Label, Thermostat Dial (adhesive-backed)

20 806-4206 Probe, Temperature (for use on units with computers)

* Not illustrated.

7-24

COOKPOT AND DRAIN COMPONENTS

ITEM PART # COMPONENT

1 Cookpot

823-2392SP Units with Manual Controls

823-2757SP Units with Computers 2 816-0152 Insulation, Cookpot Front 3 900-5405 Retainer, Cookpot Front Insulation 4 900-1762 Retainer, Insulation 5 826-1376 Nut, 10-32 Hex Head Keps (Pkg of 10) 6 806-7552SP Water-Level Sensor Assembly 7 Temperature Sensor

807-2272 Operating Thermostat (units with manual controls)

806-4206 Temperature Probe (units with computers) 8 807-2466 High-Limit Thermostat 9 809-0047 Nut, ¼-20 Cap

10 910-2927 Cover, Water-Level Sensor 11 810-0976 Nozzle 12 910-1038 Thermostat Guard (units with manual controls) 13 810-0738 Probe Guard (units with computers) 14 807-2440 Element, 208V 13kW Heating 15 809-0567 Tie Wrap, Metal 16 813-0391 Nipple, 1¼-inch NPT Close 17 813-0451 Nipple, 1¼-inch NPT x 12-inch Chromed Brass 18 813-0453 Nut, 1¼-inch NPT Chromed Stainless Steel Slip 19 813-0146 Nipple, 1¼-inch NPT x 4¼-inch 20 813-0070 Elbow, 1¼-inch NPT 90º 21 813-0394 Tee, 1¼-inch NPT 22 810-1825 Valve 1¼-inch NPT Drain 23 814-0047 Sleeve, Red Drain Valve Handle 24 910-9527 Handle, Drain Valve 25 809-0063 Nut, ⅜-16 Jam 26 809-0204 Washer, Teflon (between element and inside face of cookpot)

7-25

ELECTRONICS

20 11

4 65

21 22

42C

59C

58C

54C

55C

41C

44C

40C

39C

72C

43C

25C

14C

28C

34C

38C

27C

16C

23C

25C

44C

22C

34C

29 30 31

42C

21C

41C

44C

40C

39C

72C

20C

30C

32 33 34

11C

12C

10C

18C

19C

35 36 37

7-26

ITEM PART # COMPONENT

1 807-0680 Transformer, 208-240VAC/24VAC, 50/60Hz, 43VA 2 809-0112 Screw, 8-32 x 1¼-inch, Slotted Truss Head 3 809-0247 Nut, 8-32 Hex Keps 4 807-0979 Transformer, 208-240VAC/12VAC, 50/60Hz, 20VA (for Basket Lift) 5 809-0104 Screw, 8-32 x ½-inch Slotted Hex Washer Head 6 809-0050 Nut, 8-32 Hex 7 810-1202 Contactor, 3-pole, 600V, 40 Amp 8 807-2465 Power Block 9 807-0070 Terminal, Ground Lug

10 807-2136 Connector, 6-pin High Amp Female (2 x 3) 11 807-0875 Connector, 15-pin Female (3 x 5) 12 900-5000 Back, Contactor Box 13 900-5001 Contactor Box 14 900-5027 Brace, Contactor Box Front 15 900-5028 Brace, Contactor Box Rear 16 900-0289 Bracket, Contactor Box (used with Moisture Shield [Item 27, Page 22]) 17 809-0360 Screw, 8-32 x ⅜-inch Slotted Hex Washer Head Drill Point 18 809-0434 Screw, 8-32 x ⅜-inch Hex Washer Head Machine 19 900-5150 Cover, Contactor Box 20 807-0804 Connector, 15-pin Male (3 x 5) 21 807-0160 Connector, 12-pin Male (3 x 4) 22 807-0159 Connector, 12-pin Female (3 x 4) 23 807-2137 Connector, 9-pin Male (3 x 3) 24 807-2138 Connector, 9-pin Female (3 x 3) 25 807-2135 Connector, 6-pin High Amp Male (2 x 3) 26 807-0184 Connector, 6-pin Male (1 x 6) 27 807-3075 Connector, 5-pin Male (1 x 5) 28 807-2078 Connector, 4-pin Male (1 x 4) 29 806-9299 Harness, Contactor Box Internal (15-pin female connector with 10 leads) 30 806-9095 Harness, Contactor Box External (15-pin male connector with 6 leads) 31 806-9309 Harness, EWBS Computer (15-pin male connector with 7 leads) 32 806-8808 Harness, Contactor Box Internal (15-pin female connector with 6 leads) 33 806-9308 Harness, EWBS IFB to Components (12-pin male connector with 3 leads) 34 106-0156 Harness, Element to Contactor (6-pin female connector with 6 leads)

* 806-8807 Harness, Element to Contactor (9-pin female connector with 6 leads)

35 806-9096 Harness, ESW Interface Board (6-pin male connector with 6 leads) 36 806-9305 Harness, EWBS Basket Lift (5-pin male connector with 4 leads) 37 806-9097 Harness, ESW/EWBS w/o Basket Lift (4-pin male connector with 4 leads)

* Not illustrated.

7-27

WATER SUPPLY COMPONENTS

Basket Lifts

Single Unit with

TYPICAL WATER SUPPLY CONFIGURATIONS

Basket Lifts

Single Unit without

(shown disproportionately large for clarity)

DETAIL OF PRESSURE REGULATOR AND SOLENOID COMPONENTS

Basket Lifts

Double Unit without

7-28

ITEM PART # COMPONENT

1 810-1208 Valve, Water Pressure Regulator 2 806-7551 Valve Assembly, Solenoid 3 813-0513 Faucet, Double Jointed (with no cutoff valve) 4 910-2513 Tubing, Solenoid Valve to Cookpot 5 812-1292 Tubing, Regulator Valve to Right Solenoid Valve (used in double units) 6 812-1293 Tubing, Regulator Valve to Left Solenoid Valve (used in double units) 7 910-5149 Tubing, Solenoid Valve to Faucet 8 910-8011 Tubing, Regulator Valve to Solenoid Valve (units with basket lifts only) 9 910-8012 Tubing, Solenoid Valve to Faucet (units with basket lifts only)

10 813-0507 Coupling, ¼-inch NPT Brass 11 810-0907 Compression Fitting, ⅜-inch NPT to Tubing 90º Elbow 12 900-2915 Bracket, Pressure Regulator Valve (used in double units) 13 900-2917 Brace, Water Inlet (used in double units) 14 900-7991 Bracket, Pressure Regulator Valve (units with basket lifts only) 15 900-2916 Bracket, Pressure Regulator Valve (units without basket lifts only) 16 900-1905 Bracket, Solenoid Valve (units without basket lifts only) 17 809-0454 Nut, ½-inch Conduit 18 813-0472 Nipple, ¼-inch NPT x 2.5-inch 19 813-0471 Nipple, ¼-inch NPT x 1.5-inch 20 813-0450 Nipple, ¼-inch NPT x 2.0-inch 21 813-0448 Elbow, 90º ¼-inch NPT 22 810-1025 Compression Fitting, ¼-inch NPT to Tubing Straight 23 813-0495 Tee, ¼-inch NPT Male Branch to ¼-inch NPT Female

7-29

7.6 Wiring Diagrams

Units with Manual (Thermostat) Controls

LOW PROBE

HIGH PROBE

11C

RIGHT SIDE

COLD WATER TAP

SOLENOID

12C

10C

SOLENOID

8050878B

18C

17C

37C

36C

35C

OPTIONAL COLD WATER TAP

LEFT SIDE

COLD WATER TAP

27C

USE AWG #6 WIRE WITH

MINIMUM 75DC TEMPERATURE RATING

REMOVE THIS COVER TO

INSPECT FIELD WIRING

19C

POWER SWITCH

34C

28C

43C

38C

GRN/YLW

HI LIMIT

COMMON

25C

1514

42C

139786 121110

CONTACTOR

41C

C1 1 432

44C

72C

GRN/YLW

20C

15C

3 POSITION

BOIL SWITCH

THERMOST AT

14C

854 6 7 9

3R 1 2

WHITE

RED

24C

PANEL LIGHT

26C

COIL

40C

39C

LOAD

BLK

208V/240V

93C

LINE

WHT

95C

24V

5H 6H

3 PHASE 4 WIRE

3H 6H

4H 1H 5H

3 PHASE 3 WIRE

13C

SKIM SWITCH

93C BLK

66H

55H

44H

3H1H 2H

95C WHT

93C BLK

66H

55H

44H

NL3L2L1 L1L2L3N

95C WHT

7-30

Units with Computers

OPTIONAL

FAUCET SWITCH

17C

31C

LO LEVEL PROBE

HI LEVEL PROBE

TEMP PROBE

FAUCET SOLENOID

28C

29C

36C

8051019B

15PIN CABLE

TO COMPUTER

PIN 1

764

21C

32C

N.O.

COM

UP POSITION

SHOWN IN

BASKET LIFT

N.C

GEAR MOTOR

22C

25C

RIGHT

PIN 1

231

23C

30C

20C

543

18C

PIN 1

DEVICE

16C

SOUND

19C

32C

COMMON

20C

21C

44C

HI LIMIT

WATER SOLENOID

BLK

13C

SKIM SWITCH

31C

32C

30C

OPTIONAL BASKET LIFTOPTIONAL BASKET LIFT

TO C1

PIN 13

COMN.C

32C

BASKET LIFT WIRING

VIEWED FROM FRONT

ORG

BRN

YLW

RED

UP POSITION

BASKET LIFT

SHOWN IN

GEAR MOTOR

PIN 13L1TO C1

33C

27C

34C

2C 19C

N.O.

LEFT

BASKET LIFT SWITCH BASKET LIFT SWITCH

18C

27C

16C

23C

101C1 2 3 4 5 6 87 9 1411 12 13 15

25C

44C

32C

22C

41C 42 C

LOAD

208/12V

55C 54C

44C

40C

39C

2H 6H

1R 64 53 97 8

HEAT

CONTACTOR

LINE

BLK

WHT

59C

58C

BLK

57C 56C

HEAT

WHT

CONTACTOR

66H

55H

44H

ELEMENT

WIRING

72C

GRN/YLW

LINE

LOAD

208/24V

93C

BLK

95C

WHT

32 1

CONTROLS

CIRCUIT

7-31

Frymaster, L.L.C., 8700 Line Avenue, PO Box 51000, Shreveport, Louisiana 71135-1000

Shipping Address: 8700 Line Avenue, Shreveport, Louisiana 71106

TEL 1-318-865-1711 FAX (Parts) 1-318-219-7140 FAX (Tech Support) 1-318-219-7135

PRINTED IN THE UNITED STATES

SERVICE HOTLINE

1-800-551-8633

819-5680

May 2003

Frymaster 17EC, 17ECS, EWBS, ESW User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual