ERA / EBD ELECTRIC FRYER

SERVICE MANUAL

See GENERAL section for a complete listing of Models and ML Numbers.

1ER50-Series

1ER85-Series

2ER50-Series

2ER85-Series

2XER50-Series

2XER85-Series

3ER50-Series

3E85-Series

3ER85-Series

4E50-Series

4ER50-Series

4E85-Series

4ER-Series

– NOTICE –

This Manual is prepared for the use of trained Hobart Service Technicians and should not be used by those not properly qualified.

This manual is not intended to be all encompassing. If you have not attended a Hobart Service School for this product, you should read, in its entirety, the repair procedure you wish to perform to determine if you have the necessary tools, instruments and skills required to perform the procedure. Procedures for which you do not have the necessary tools, instruments and skills should be performed by a trained Hobart Service Technician.

The reproduction, transfer, sale or other use of this manual, without the express written consent of Hobart, is prohibited.

This manual has been provided to you by ITW Food Equipment Group LLC (“ITW FEG”) without charge and remains the property of ITW FEG, and by accepting this manual you agree that you will return it to ITW FEG promptly upon its request for such return at any time in the future.

Service Updates

TIS DOCUMENT LIST – ERA/EBD ELECTRIC FRYER

December 2020

SERVICE UPDATES

• Added 15 diagrams to WIRING DIAGRAMS section.

GENERAL

INTRODUCTION

SINGLE FLOOR MODEL FRYERS

This Service Manual covers specific service information related to the models listed on the front cover. ERA and EBD series electric fryers come equipped with behind-the-door solid state controls. The features and operation of the cooking controls are the same for both single floor model fryers and Kleenscreen battery fryers. All pictures and illustrations are of a 2ER50AF (17kW, 208V) unless otherwise noted.

Fryers with the Filter-Ready option installed, use the Mobile Filter. For service information related to the Mobile filter refer to F24599 MOBILE FILTERS. A GRO Frymate (dump station) can be configured in a battery with fryers 15½ inches or 21 inches in width.

KLEENSCREEN FILTRATION SYSTEM

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

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

Some of the benefits include:

• Self-contained system eliminating the use of external filter equipment.
• Paperless filtering system.
• Easy to clean and low maintenance.

Kleenscreen fryer batteries are available in a minimum of two and a maximum of four fryer sections. The fryer size of each section is identical.

A GRO Frymate (dump station) can also be included as one or more of the sections.

SPECIFICATIONS

TOOLS

Single Floor Model Fryers

• 208VAC, 240VAC or 480VAC (3 phase, 60HZ) to

power the heating elements.

Drawer Filter System

Separate electrical connections are required for

each section of the battery.

• 208VAC, 240VAC or 480VAC (3 phase, 60HZ) to

power the heating elements.

• On 208VAC and 240VAC models, a transformer provides power for the fryer controls and drawer filter system controls.
• On 480VAC models, a 120VAC connection is required for each fryer section.

Standard

• Standard set of hand tools.
• VOM with minimum of NFPA-70E CATIII 600V, UL/CSA/TUV listed. Sensitivity of at least 20,000 ohms per volt and the ability to measure DC micro amps. Meter leads must also be rated at CAT III 600V.
• Digital temperature tester (thermocouple type).

Special

• Electrostatic Discharge Kit.
• Burndy pin extraction tool RX2025 GE1; Newark Electronics Catalog Number 16F6666. Used for removing pin terminals on Burndy connectors.
• Clamp on type amp meter with minimum of NFPA-70E CAT III 600V,UL/CSA/TUV listed.

MODELS AND ML NUMBERS

The following table contains a complete listing of fryer models addressed by this Service Manual.

REMOVAL AND REPLACMENT OF PARTS

COVERS AND PANELS

Disconnect the electrical power to the machine and follow lockout / tagout procedures. There may be multiple circuits. Be sure all circuits are disconnected.

Electrical Components Access Panel

1. Remove screws at top of access panel and lower panel.

2.Lift from hinge then remove panel.

3.Reverse procedure to install.

Element Head Cover

1. Drain shortening from fry tank.
2. Remove screws from rear of element head

3. Raise heating elements and place 2×4 lumber under them for support.

4.Remove screws from rear of element head assembly.

NOTE: Head cover will separate from element head base. Heating elements remain attached to element head cover.

5.Grasp heating elements and remove 2×4 lumber. Lift the elements and pull toward rear of fryer.

6.Lower the heating elements and place them in fry tank.

7.Reverse procedure to install.

COOKING CONTROLS

Disconnect the electrical power to the machine and follow lockout / tagout procedures. There may be multiple circuits. Be sure all circuits are disconnected.

Certain components in this system are subject to damage by electrostatic discharge (ESD) during field repairs. An ESD kit is required to prevent damage. The ESD kit must be used anytime the circuit board is handled.

1. Open fryer section door(s).
2. Remove electrical connection to cooking controls.

3.Remove screws securing controls.

4.Remove cooking control cover.

5.Disconnect lead wires from the component being replaced then remove from control box.

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

DISCARD VALVE SWITCH (KLEENSCREEN FRYERS ONLY)

Disconnect the electrical power to the machine and follow lockout / tagout procedures. There may be multiple circuits. Be sure all circuits are disconnected.

NOTE: Switches are not adjustable.

1. Open the door to the fryer section being serviced.
2. Disconnect lead wire connector.
3. Remove switch mounting screws.
4. Remove discard valve switch.
5. Reverse procedure to install and check for proper operation.

TEMPERATURE PROBE

Disconnect the electrical power to the machine and follow lockout / tagout procedures. There may be multiple circuits. Be sure all circuits are disconnected.

CAUTION

Do not sharply bend and kink, or clamp down on the capillary tube or damage may occur.

1. Raise heating elements.
2. Remove clamps from temperature probe.
3. Remove element head cover as outlined under COVERS AND PANELS.
4. Disconnect temperature probe lead wires.
5. Remove temperature probe from the element head.
6. Reverse procedure to install.

NOTE: When installing, ensure grommet remains in place when inserting temperature probe thru the grommet in the element head.

7.Check cooking control calibration as outlined in COOKING CONTROL CALIBRATION.

HIGH LIMIT THERMOSTAT

Disconnect the electrical power to the machine and follow lockout / tagout procedures. There may be multiple circuits. Be sure all circuits are disconnected.

CAUTION

Do not sharply bend and kink, or clamp down on the capillary tube or damage may occur.

1. Raise heating elements.
2. Loosen clamps securing capillary tube and bulb to element.

3.Remove element head cover as outlined under COVERS AND PANELS.

4.Remove high limit from mounting bracket.

5.Disconnect high limit lead wires.

6.Remove grommet from the element head assembly.

7.Remove the bulb, capillary tube and high limit from the element head assembly.

8.Reverse procedure to install.

1. 1. Slide grommet onto capillary tube then insert grommet into the capillary tube thru hole in the element head.
   2.  Move element lead wires clear of high limit when installing.

ELECTRICAL COMPONENT

Disconnect the electrical power to the machine and follow lockout / tagout procedures. There may be multiple circuits. Be sure all circuits are disconnected.

CAUTION

Components in this system are subject to damage by electrostatic discharge. A field grounding kit is available to prevent damage. The field service kit must be used anytime the control board is handled.

1. Open electrical component access panel.

2.Disconnect lead wires then remove the component being replaced.

3.Reverse procedure to install the replacement component and check for proper operation.

SCIRCUIT BREAKER / SUPPLY BOX COMPONENTS

Disconnect the electrical power to the machine and follow lockout / tagout procedures. There may be multiple circuits. Be sure all circuits are disconnected.

CAUTION

Components in this system are subject to damage by electrostatic discharge. A field grounding kit is available to prevent damage. The field service kit must be used anytime the control board is handled.

NOTE: Supply box will contain a circuit breaker on 24kW 208-240V units.

1. Remove screw and circuit breaker/ supply box cover.

2.Disconnect lead wires then remove the component being replaced.

NOTE: Supply box will contain a circuit breaker on 24kW 208-240V units.

3.Reverse procedure to install the replacement component and check for proper operation.

FILL SOLENOID VALVE (KLEENSCREEN FRYERS ONLY)

      Disconnect the electrical power to the machine and follow lockout / tagout procedures. There may be multiple circuits. Be sure all circuits are                                                                          disconnected.

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

2.Disconnect fill solenoid valve lead wire connector from below control panel.

3.Remove screws (2) securing the solenoid valve body flange to pipe tee then remove the assembly from fryer.

4.Remove pipe fittings from solenoid valve and install on replacement valve.

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

HEATING ELEMENTS

Disconnect the electrical power to the machine and follow lockout / tagout procedures. There may be multiple circuits. Be sure all circuits are disconnected.

CAUTION

Components in this system are subject to damage by electrostatic discharge. A field grounding kit is available to prevent damage. The field service kit must be used anytime the control board is handled.

1. Raise heating elements.
   1. If replacing left heating element, loosen high limit bulb and capillary tube clamps. Remove high limit bulb and capillary tube from clamps then position away from element.
   2. If replacing right heating element, remove temperature probe clamps and position temperature probe away from element.

NOTE: When installing high limit, route the capillary tube and center the bulb between the clamps before tightening.

2.Remove element assembly clamps.

3.Remove element head cover as outlined under COVERS AND PANELS.

4.Disconnect heating element lead wires.

NOTE: Each heating element assembly contains three individual elements (six lead wire connections total).

5.Remove screws from heating element mounting bracket and remove heating element.

6. Reverse procedure to install.

LIFT ASSIST SPRINGS

Disconnect the electrical power to the machine and follow lockout / tagout procedures. There may be multiple circuits. Be sure all circuits are disconnected.

NOTE: If one spring breaks, replace both springs.

1. Raise heating elements and place 2×4 lumber under them for support. Heating elements are to remain upright.

2.Loosen all eye bolt mounting nuts to release tension on springs.

3.Remove lift assist springs from the eye bolt hooks.

4.Remove lift assist springs from the hangers.

5.To install springs:

1. 1. Attach spring hook to hanger thru rear door opening.
   2. Attach spring hook to eye bolt and tighten eye bolt mounting nut.

3.Remove 2×4 lumber and lower heating elements.

6.Adjust spring tension as outlined under LIFT ASSIST SPRING ADJUSTMENT.

TILT SWITCH

Disconnect the electrical power to the machine and follow lockout / tagout procedures. There may be multiple circuits. Be sure all circuits are disconnected.

1.Remove element head cover as outlined under COVERS AND PANELS.

2.Lower heating elements.

3.Disconnect lead wires from tilt switch.

4.Remove tilt switch from element head.

REAR VIEW SHOWN, ELEMENTS LOWERED

FRONT VIEW SHOWN, ELEMENTS RAISED

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

PUMP AND MOTOR (KLEENSCREEN FRYERS ONLY)

    Disconnect the electrical power to the machine and follow lockout / tagout procedures. There may be multiple circuits. Be sure all circuits are disconnected.

1. Drain filter tank of shortening.
2. Open the fryer section doors above the filter tank drawer.
3. Pull filter drawer out, remove filter tank assembly and push the tank support arms back into place under the fryer.
4. Remove splash guard from base frame.

5. Disconnect pump motor lead wire connector.

6. From underneath the fryer: disconnect flexible line fittings from pump.

7. Remove pump motor assembly from fryer.

8.Remove pipe fittings from the pump and install on replacement pump.

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

SERVICE PROCEDURES AND ADJUSTMENTS

Certain procedures in this section require electrical test or measurements while power is applied to the machine. Exercise extreme caution at all times. If test points are not easily accessible, disconnect power and follow lockout / tagout procedures, attach test equipment and reapply power to the test.

TEMPERATURE PROBE TEST

The temperature probe is an RTD (resistance temperature device) of the thermistor type. As temperature increases the resistance value decreases.

Probe Fault

NOTE: A temperature probe fault can be caused by a lead wire break or a lead short.

If a temperature probe fault occurs:

• The red diagnostic LED on back of control assembly (inside control box cover) will flash.
• The heat demand outputs are de-activated.

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

To Check

1. Turn power switch off.
2. Disconnect cooking control connector.
3. Test the probe using a VOM to measure resistance. Connect the meter leads to pins 4 & 5 on the male connector.
   1. If the measured resistance values are within the allowable range, the probe is functioning properly. Reverse procedure to install.
   2. If the measured resistance values are outside the allowable range, install a replacement probe and check for proper operation.

COOKING CONTROL CALIBRATION

1. Verify condition of temperature probe as outlined under TEMPERATURE PROBE TEST.
2. Check the level of shortening in fry tank. The level must be between the MIN & MAX fill lines before proceeding.
3. Place clamp on type amp meter around any yellow lead wire of 2CON or 4CON.

4.Allow shortening to cool below 300°F.

5.Place a thermocouple in the geometric center of the fry tank one inch below the shortening surface.

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

7.Monitor the current as it cycles on and off.

NOTE: Stir shortening to eliminate any cold zones.

• 1. Allow heat to cycle three times to stabilize shortening temperature.
  2. Record meter reading from thermocouple when the current cycles off and on for at least two complete heating cycles.

8.Calculate the average temperature by adding the temperature reading when the heat goes off to the temperature reading when the heat comes on & divide this answer by 2.

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

Example: 360° + 340° ÷ 2 = 350°F. The average temperature should be 350°F (± 5°F).

• • If the average temperature reading is within tolerance, cooking control is properly calibrated.
  • If the average temperature reading is out of tolerance, loosen set screw to remove temperature knob and adjust calibration potentiometer.

NOTE: Ensure that the shaft and knob position does not change when loosening set screw and removing temperature knob, as this could affect calibration.

• • • Adjust calibration potentiometer clockwise to increase temperature.
    • Adjust calibration potentiometer counterclockwise to decrease temperature.
  • If over 25° of adjustment is necessary, replace cooking control.

9.Repeat the average temperature calculation for up to three attempts. Allow the cooking control to cycle at least two times between adjustments before performing the calculation.

10.If calibration is unsuccessful, the cooking control may be malfunctioning and cannot be adjusted properly. Install a replacement cooking control and check calibration.

LIFT ASSIST SPRING ADJUSTMENT

1. Turn power switch off.
2. Check spring tension:
   1. Raise heating elements to the full up position.
   2. Lower heating elements to the full down position. Elements should remain in place.
   3. If the elements remain in place as described, then no adjustment is necessary. If the elements do not remain in place, continue with procedure for adjustment.
3. Lower heating elements to the down position.
4. Loosen stop nut on all eye bolts.

5. Adjust eye bolt mounting nuts as necessary, but equally on all springs to achieve the best spring tension to hold elements in place.

6. Perform spring tension check.

7. Repeat spring tension adjustment if necessary.

8. Tighten stop nut on all eye bolts.

HEATING ELEMENT TEST

CAUTION

Heating elements must remain submerged in shortening while performing this test or damage may occur.

1. Remove element head cover as outlined under COVERS AND PANELS.
2. Access heating element lead wire connections at wire nuts.
3. Re-connect power, turn power switch on and set cooking control to call for heat.
4. Measure voltage at heating element connections and verify against data plate voltage.
   1. If voltage is incorrect, see ALL MODELS.
   2. If voltage is correct, check current draw (amps) through the heating element lead wires. See table below for proper values.

NOTE: This method is preferred over a resistance check when a clamp on type amp meter is available.

• • 1. If current draw is correct then heating element is functioning properly.
    2. If current draw is not correct, turn power switch off and disconnect power to the machine.
       1. Install a replacement heating element.
       2. Proceed to last step.
  • If unable to check current draw, a resistance check may indicate a malfunctioning element. See table for proper values.
    1. Turn power switch off and disconnect power to the machine.
    2. Remove wire nuts from heating element lead wire connections and separate lead wires.
    3. Check resistance (ohms)

5.Check for proper operation.

ELECTRICAL OPERATION

COMPONENT FUNCTION

COMPONENT LOCATION

CONTROL PANEL COMPONENTS

COOKING CONTROL COMPONENTS

SEQUENCE OF OPERATION

Fryer

1. Conditions.

• Fryer connected to correct supply voltage and is properly grounded. Separate connections are required for each section of the battery.
• 120/24VAC transformer energized.
• Internal fryer circuit breaker ON (24kW, 208-240V units only).
• Power switch off.
• Shortening at proper level in fry tank and below last set point temperature used.
• Cooking control is setup properly and ready to use.
• Manual drain valve closed (drain valve interlock switch N.O. is closed).
• Tilt switch contacts closed (N.O. – held closed with heating elements lowered).
• High limit thermostat closed.

2. Turn power switch on. Supply voltage energizes:

• 1CON and 3CON thru high limit thermostat and tilt switch.
• R2 power relay coil and R2 N.O. contacts close.
• Cooking control thru DVI switch.

3. Press start momentary switch. If shortening temperature is below set point:

A. J5 outputs 24VDC to R1 thru wire 56.

B. R1 heat relay coil energized and R1 N.O. contacts close.

C. 2CON and 4CON are energized and heating elements are powered.

4. Shortening reaches set temperature.

A. Cooking control de-activates the heat demand output (24VDC) at J5.

B. With power removed from J5, R1 is de- energized thru wire 56.

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

5. Cooking control cycles heat output on shortening temperature until power switch is turned off, heating elements are raised or a high limit condition occurs.

1. 1. If shortening reaches 460°F
      • Tthe high limit thermostat opens
      • 1CON and 3CON are de-energized
      • Power is removed from heating elements.
   2. 1CON and 3CON remain deenergized until:
      • Shortening temperature drops below 460°F.
      • Manual reset button is pressed.
      • Start button is actuated.

Filtering System

The discard valve handle is connected to a mechanical valve and switch assembly to route the flow of shortening (electrically and mechanically) in the filtering system.

Refer to Installation & Operation manual for specific instructions on filtering.

1. Conditions
   • Fryer connected to correct supply voltage and is properly grounded.
   • Power switch to the fryer section off.
   • Shortening between 300°F and 350°F.
   • Filter drawer assembly installed properly.
   • Filter power switch off.
   • Discard valve handle (yellow) retracted.
   • Discard valve switch N.O. contacts open.
   • Mechanical discard valve closed.
2. Turn power switch on, to the fryer section to be filtered.

         NOTE: Shortening should not be filtered outside of this temperature range. At lower temperatures the shortening is thicker which may increase filtering time and place a             greater load on the pump. At higher shortening temperatures, the pump seal life is decreased.

3.Set cooking control between 300°F (minimum) and 350°F (maximum).

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

4.Allow shortening to cycle at set temperature for approximately 10 minutes.

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

5.Open the manual drain valve to the fryer section in need of and drain the shortening into filter tank. (Heat circuit will be disabled).

6.Turn filter power switch on

• • R3 filter relay coil energized.
  • R3 N.O. contacts close.
  • Power supplied to pump motor and fill solenoid.

7.Pump motor circulates shortening through filter and solenoid to tank until power is removed.

           NOTE: If using solid shortening, when all filtered shortening is returned to the fry tank and filter power switch is off, open the filter drawer approximately one inch. Allow             the remaining shortening in the line to drain into the filter tank to prevent possible clogging after the shortening cools and solidifies.

8.When filtering process is completed and the tank is full, turn off filtering switch.

• • Power is removed from pump motor and solenoid closes.

9. Close the filter drawer when complete.

10. To restart the cooking process, press the start button.

Discarding Shortening

The discard valve handle is connected to a mechanical valve and switch assembly to route the flow of shortening (electrically and mechanically) out discard hose.

Refer to Installation & Operation manual for specific instructions on draining.

1. Conditions
   • Fryer connected to correct supply voltage and is properly grounded.
   • Power switch to the fryer section off.
   • Shortening between 300°F and 350°F.
   • Filter drawer assembly installed properly.
   • Filter power switch off.
   • Discard valve handle (yellow) retracted.
   • Discard valve switch N.O. contacts open.
   • Mechanical discard valve closed.
2. Turn power switch on, to the fryer section to be drained.

        NOTE: Shortening should not be drained outside of this temperature range. At lower temperatures the shortening is thicker which may increase draining time and place a             greater load on the pump. At higher shortening temperatures, the pump seal life is decreased.

3. Set cooking control between 300°F (minimum) and 350°F (maximum).

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

4. Allow shortening to cycle at set temperature for approximately 10 minutes.

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

5. Open the manual drain valve to the fryer section in need of discarding and drain the shortening into filter tank. (Heat circuit will be disabled.

6.Connect discard hose. Place other end of discard hose in appropriately-sized receptacle.

7.Pull out discard handle.

• • Discard switch N.O. contacts close.
  • R4 solenoid relay coil energized.
  • R4 N.C. contacts open.

8. Turn filter power switch on.

• R3 filter relay coil energized.
• R3 N.O. contacts close.
• Power supplied to pump motor.

9. Pump motor circulates shortening out discard hose and into receptacle. If discard receptacle is not large enough to hold entire shortening amount

• Turn filter switch off to stop pump motor.
• Empty receptacle.
• Resume discard operation by turning filter switch on.

10. When discard process is complete, turn off filter switch.

• • Power is removed from pump motor.

11.Push in discard handle.

SCHEMATIC DIAGRAMS

208V & 240V Fryers Shown With KleenScreen Filtration System

480V Fryers Shown With KleenScreen Filtration System

WIRING DIAGRAMS

Refer to: Diagrams (11 x 17 pdf file)

208V & 240V (14, 17 kW) Fryers Shown With KleenScreen Filtration System (Sheet 1)

208V & 240V (14, 17 kW) Fryers Shown With KleenScreen Filtration System (Sheet 2)

208V & 240V (24 kW) Fryers Shown With KleenScreen Filtration System (Sheet 1)

208V & 240V (24 kW) Fryers Shown With KleenScreen Filtration System (Sheet 2)

480V Fryers Shown With KleenScreen Filtration System (Sheet 1)

480V Fryers Shown With KleenScreen Filtration System (Sheet 2)

Frymate (Dump Station)

Fig. 45

Fig. 46

Fig. 47

Fig. 48

Fig. 49

Fig. 50

Fig. 51

Fig. 52

Fig. 53

Fig. 54

Fig. 55

Fig. 56

Fig. 57

Fig. 58

Fig. 59

TROUBLESHOOTING

ALL MODELS

FRYMATE (DUMP STATION) WITH OPTIONAL HEATER

KLEENSCREEN FILTERING SYSTEM