Frymaster BIH1721 Operators Manual

Ultimate Electric Series Fryers

Service & Parts Manual

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

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

www.frymaster.com

E-mail: service@frymaster.com

Price: $28.00

819-5981

APRIL 2011

Please read all sections of this manual and retain for future reference.

NOTICE

This appliance is intended for professional use only and is to be operated by qualified

personnel only. A Frymaster Dean Factory Authorized Servicer (FAS) or other qualified

professional should perform installation, maintenance, and repairs. Installation, maintenance,

or repairs by unqualified personnel may void the manufacturer’s warranty. See Chapter 1 of

this manual for definitions of qualified personnel.

NOTICE

This equipment must be installed in accordance with the appropriate national and local codes of

the country and/or region in which the appliance is installed.

NOTICE TO U.S. CUSTOMERS

This equipment must be installed in accordance with the appropriate national and local codes of

the country and/or region in which the appliance is installed.

NOTICE

Drawings and photos used in this manual are intended to illustrate operational, cleaning and

technical procedures and may not conform to onsite management operational procedures.

NOTICE TO OWNERS OF UNITS EQUIPPED WITH CONTROLLERS

U.S.

This device complies with Part 15 of the FCC rules. Operation is subject to the following two

conditions: 1) This device may not cause harmful interference, and 2) This device must accept

any interference received, including interference that may cause undesired operation. While

this device is a verified Class A device, it has been shown to meet Class B limits.

CANADA

This digital apparatus does not exceed the Class A or B limits for radio noise emissions as set

out by the ICES-003 standard of the Canadian Department of Communications.

Cet appareil numerique n’emet pas de bruits radioelectriques depassany les limites de classe A et B prescrites dans la norme NMB-003 edictee par le Ministre des Communications du Canada.

DANGER

Improper installation, adjustment, maintenance or service, and unauthorized alterations or

modifications can cause property damage, injury, or death. Read the installation, operating and

service instructions thoroughly before installing or servicing this equipment.

DANGER

The front ledge of the fryer is not a step. Do not stand on the fryer. Serious injury can result

from slips or contact with the hot oil.

DANGER

Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any

other appliance.

DANGER

The crumb tray in fryers equipped with a filter system must be emptied into a fireproof container

at the end of frying operations each day. Some food particles can spontaneously combust if left

soaking in certain shortening material. Additional information can be obtained in the filtration

manual included with the system.

WARNING

No structural material on the fryer should be altered or removed to accommodate placement of

the fryer under a hood. Questions? Call the Frymaster Dean Service Hotline at 1-800-551-8633.

WARNING

Do not bang fry baskets or other utensils on the fryer’s joiner strip. The strip is present to seal

the joint between the frypot. Banging fry baskets on the strip to dislodge shortening will distort

the strip, adversely affecting its fit. It is designed for a tight fit and should only be removed for

cleaning.

NOTICE

IF, DURING THE WARRANTY PERIOD, THE CUSTOMER USES A PART F OR THIS MANITOWOC

FOOD SERVICE EQUIPMENT OTHER THAN AN UNMODIFIED NEW OR RECY CLED 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.

Ultimate Electric Series Fryers

Service & Parts Manual

TABLE OF CONTENTS

Page #

1. SERVICE PROCEDURES 1-1

1.1 General 1-1

1.2 Replace Computer/Controller 1-1

1.3 Replace Interface Board 1-2

1.4 Replace Transformer 1-3

1.5 Replace Temperature Probe 1-3

1.6 Replace Heating Element 1-6

1.7 Replace High-Limit 1-9

1.8 Replace Frypot 1-10

1.9 Replace Contactor (Latching or Heating) 1-11

1.10 Built-in Filter System Service Procedures 1-11

1.11 Basket Lift Service Procedures 1-13

1.12 Electric Interface Board Diagnostic Chart 1-17

1.13 Probe Resistance Chart 1-18

1.14 Element Wattage/Amperage Calculation Charts 1-18

1.15 Wiring Diagrams, Main 1-19

1.15.1 208/240V 1721, 18E and 18UE 1-19

1.15.2 FAST: 1721, 18E and 18UE 1-20

1.15.3 KSCFH218E FAST Export India 1-21

1.15.4 480V 18UE and EH1721 1-22

1.15.5 208V 18UE and EH1721 1-23

1.15.6 KSCFH218E 1-24

1.15.7 BIH1721 1-25

1.16 Wiring Diagrams, Basket Lifts 1-26

1.16.1 Modular Basket Lifts 1-26

1.16.2 Bell Crank Style Basket Lifts 1-27

1.17 Wiring Diagrams, Built-in Filtration 1-28

1.17.1 480V Systems 1-28

1.17.2 208V Systems 1-29

1.17.3 115/230V KFC Systems 1-30

Ultimate Electric Series Fryers

Service & Parts Manual

TABLE OF CONTENTS (CONT.)

Page #

2. PARTS LIST 2-1

2.1 Accessories 2-1

2.2 Basket Lift Assembly (Modular) and Related Components 2-2

2.3 Cabinetry and Related Components 2-5

2.3.1 EH1721 & 18UE Electric 2-5

2.3.2 KFC18E Electric 2-8

2.3.3 Door Components – Spring-Loaded Door Pins 2-10

2.3.4 Top Caps and Tilt Housing Components 2-11

2.4 Computer and Related Components 2-12

2.5 Contactor/Wireway Box and Related Components 2-14

2.6 Filter Pan and Related Components 2-16

2.6.1 Under Fryer Filter (UFF) – UFF 80 (100 Lb Capacity) 2-16

2.6.2 Under Fryer Filter (UFF) – KFC18E Only 2-17

2.6.3 Under Fryer Filter (UFF) – KFC18E Export India Only 2-19

2.6.4 Under Fryer Filter (UFF) – Filter-Leaf/Suction Tube Assembly 2-20

2.6.5 Single Under Fryer Filter (SUFF) – BIH1721 & 18UE 2-21

2.7 Frypot and Drain Valve Components 2-22

2.8 Oil Drain Flush Components 2-23

2.9 Oil Drain Manifold Components 2-24

2.10 Oil Return Manifold, Motor and Pump Components 2-25

2.11 Oil Return Line Assemblies 2-28

2.12 Probes, High-Limits, Elements and Related Components 2-30

2.13 Tilt Safety Switch Components 2-33

ULTIMATE ELECTRIC SERIES FRYERS

CHAPTER 1: SERVICE PROCEDURES

1.1 General

Before performing any maintenance on your Frymaster Dean Ultimate Electric fryer, you must disconnect the electrical power supply.

When electrical wires are disconnected, it is recommended that they be marked in such a way as to facilitate reassembly.

DANGER

Hot cooking oil or shortening will cause severe burns. Never attempt to move this appliance

when filled with hot cooking oil or shortening, or to transfer hot cooking oil or shortening

from one container to another.

DANGER

This equipment should be unplugged when servicing, except when electrical circuit tests are

required. Use extreme care when performing such tests.

This appliance may have more than one electrical power supply connection point.

Disconnect all power cords before servicing.

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

authorized service agent only.

1.2 Replace Controller

1. Unscrew and remove two control panel

screws on control panel front. Swing the panel open from the top.

2. Unplug wiring harness at plug on back of

controller (arrow). Unplug controller ground wire from controller (circle).

3. Remove the control panel/controller by lifting

the assembly from the hinged slots in the control-panel frame.

4. Reverse procedures to install new controller.

Wire harness/connector and ground wire on controller back.

1-1

ULTIMATE ELECTRIC SERIES FRYERS

CHAPTER 1: SERVICE PROCEDURES

1.3 Replace Interface Board

1. Unplug all power cords. Perform Procedure 1.2, Steps 1-4, Replace Controller.

2. Unplug wire harness from the interface board

(arrow). Remove all wiring from the terminals of the interface board, ensuring that each wire is marked for reattachment.

3. Remove the nuts from each corner of the

interface board and slide the board from the studs. Unplug connectors J1 and J2, mark and unplug all other wiring on rear of the interface board. Ensure that standoffs remain in place on studs, prior to installing new interface board. Install the new interface board by reversing the previous procedures. Ensure that wire harnesses are connected to back of interface board prior to securing interface board. Also, ensure that wiring and wire harnesses are connected to the proper terminals.

Wire harness/connector.

Nuts securing interface board (arrows).

1-2

ULTIMATE ELECTRIC SERIES FRYERS

CHAPTER 1: SERVICE PROCEDURES

1.4 Replace Transformer

1. Unplug all power cords. Perform Procedure 1.2, Steps 1-4, Replace Controller.

2. Remove all wiring from the terminals of the

transformer to be replaced (arrows).

3. Remove the screws that secure the

transformer to the component box.

4. Install the new transformer by reversing the

preceding procedures. Make sure you reconnect the wiring to the proper terminals and the harnesses to the correct connectors.

Mark and disconnect wiring from the transformer being replaced.

1.5 Replace Temperature Probe

1. Unplug fryer from the electrical source.

2. Drain the cooking oil from the frypot.

3. Remove the fryer from the exhaust hood to gain access to the rear of the fryer.

4. Remove the screws from the back cover(s).

Set the cover(s) and screws aside.

5. After removing back(s), remove two

remaining screws securing the tilt housing cover (arrows). Remove the tilt housing.

Note: Early production model shown.

Current production units have a one-piece back panel (remove all screws securing back panel). Older units have a three-piece back panel.

Screws securing back cover and tilt housing. Remove two tilt-housing screws (arrows) after removing all other screws and back panel(s).

1-3

ULTIMATE ELECTRIC SERIES FRYERS

CHAPTER 1: SERVICE PROCEDURES

1.5 Replace Temperature Probe (cont.)

6. Disconnect the wire harness containing the

probe wiring (arrows). It may be necessary to remove the wire ties.

7. Use a pin-pusher (P/N 806-4855 or P/N 807-

0928—see Section 1.7) to remove the red and white probe wires from the connector. Note probe pin location in plug. Pull the probe wires out of the insulation.

8. Remove the screw(s) securing the probe

bracket to the element. Remove the metal wraps securing the probe to the element.

9. Remove the probe bracket and the securing

components from the probe bulb and element. Thread the probe wire through the hole (arrow) in the tilt plate assembly and remove the probe.

Use a pin-pusher to remove probe wires from connector (arrows).

Remove probe bracket screw and bracket to remove

robe.

Probe Bulb

Bracket Screw

Probe Bracket

Pull old probe wire through grommet to remove probe.

1-4

ULTIMATE ELECTRIC SERIES FRYERS

CHAPTER 1: SERVICE PROCEDURES

1.5 Replace Temperature Probe (cont.)

10. Thread the new probe wire through the hole

in tilt plate. Place the new temperature probe assembly onto the element and secure with the bracket and screws removed earlier. Clip the probe onto the rear of the element (arrow) in two places. The temperature probe assembly should be oriented in the same manner as the probe being replaced.

11. Thread the probe wires into the harness

insulation. Note the pin positions and insert pins in the connector. Reconnect the harness and secure with a wire-tie.

12. Lower the element into the frypot with the lift

handle.

13. Place the tilt housing cover over the tilt

housing assembly and secure with screws. Slightly raising the elements will facilitate tilt-housing installation.

14. Install back cover(s) and secure with screws

Secure probe bulb to the element back in two places with metal wire wrap (arrow).

Install tilt housing and cabinet backs after probe installation is complete.

1-5

ULTIMATE ELECTRIC SERIES FRYERS

CHAPTER 1: SERVICE PROCEDURES

1.6 Replace Heating Element

1. Perform Procedure 1.5, Replace Temperature Probe, Steps 1-7.

2. Unplug the element connectors for the

element being removed (right element- 6-pin harness connector; left element- 9-pin harness connector). Remove the element wires from the connector. Press down on either side of the connector while pulling up on the top portion. The connector will open from the top. Note wiring configuration in connector before removing element wire pins. Pull all wires from the connector.

3. Remove the screws securing the temperature

probe bracket from the element. Remove the probe clamp (metal wire-wrap). Set the temperature probe and probe-securing components aside.

NOTE: Temperature probe removal is not

required if the left element is being replaced.

4. Disconnect the element springs from the tilt

brackets.

Push in on tabs to release

Remove metal wire wrap (arrow), and screws securing probe bracket to element (inset, arrow).

Harness

Connector

Closed

top portion

Harness

Connector

Open

Top Portion

Disconnect element springs here.

1-6

ULTIMATE ELECTRIC SERIES FRYERS

CHAPTER 1: SERVICE PROCEDURES

1.6 Replace Heating Element (cont.)

5. Remove the element clamps and hardware

before removing mounting-screws and nuts on the defective element. Remove all wireties securing element wiring, and then remove element from frypot.

6. Install the replacement element in the frypot

and secure with the mounting hardware removed in Step 5.

7. Reinstall the temperature probe and probe-

bracket components onto the replacement element.

8. Route the element leads (terminals) to the

rear of the fryer. Ensure the element-harness insulation is in place prior to installing connectors.

9. Secure element wiring with wire-ties.

Element mounting screws on tilt-plate front. (Inset: element mounting plate on tilt-plate back.)

Ensure element wire insulation is installed and that the wires are properly routed to prevent wire chafing.

Use wire-ties (arrows) to secure element wiring.

1-7

ULTIMATE ELECTRIC SERIES FRYERS

CHAPTER 1: SERVICE PROCEDURES

1.6 Replace Heating Element (cont.)

10. When replacing the left element (as viewed

from the rear of the fryer), use the 9-pin connector, inserting the leads from the replacement element. Ensure the pin numbers match the numbers of the defective element wires. When all pin terminals have been fully inserted, close the connector by sliding the halves together until the tabs snap back into place (reverse procedure in this section, Step 2). Check wire numbers to ensure correct wiring of the replacement element.

When replacing the right element (as viewed from the rear of the fryer), follow the above procedure, inserting pin terminals into the corresponding holes in the 6-pin connector.

11. Connect the connectors, ensuring the latches

lock in place (arrow).

12. Install the temperature probe wires (marked

for re-assembly) in the corresponding pin locations.

13. Reconnect the element springs. Older models

have turnbuckles (arrow) to allow adjustment of the spring tension.

14. Place the tilt housing cover over the tilt

housing assembly and secure with screws.

15. Install back covers and secure with screws.

16. Position fryer under exhaust hood.

Left Element— 9-Pin Connector

Right Element—

Connector

6-Pin

Ensure the connection is complete and the latches (arrow) are locked in place.

Older units have turnbuckles to adjust spring tension. Current production models are not adjustable.

1-8

ULTIMATE ELECTRIC SERIES FRYERS

CHAPTER 1: SERVICE PROCEDURES

1.7 Replace High-Limit

1. Perform Procedure 1.5, Replace Temperature

Probe, Steps 1-4.

2. Disconnect the wire harness containing the

high-limit wires.

3. Use a pin-pusher (P/N 806-4855 or P/N 807-

0928) to remove the two high-limit wires from the wire harness connector (arrows). Note pin location in connector before removing wires.

4. Remove the high-limit from the frypot using

an open-end wrench or other suitable tool.

5. Apply Loc-Tite PST 567 sealant to the

replacement high-limit threads.

6. Screw the replacement high-limit into the

frypot and tighten to 170-180 inch-pounds torque. DO NOT OVERTIGHTEN.

7. Insert the replacement high-limit wires into

the connector, ensuring each wire is in the correct hole..

8. Reconnect the high-limit wire-harness

connector.

9. Install and secure the back cover(s).

10. Return fryer to operation.

Using a pin-pusher, remove two high-limit wires (arrows) from connector.

Pin Pusher— P/N 807-0928

Place wrench here when removing and installing high-limit.

1-9

ULTIMATE ELECTRIC SERIES FRYERS

CHAPTER 1: SERVICE PROCEDURES

1.8 Replace Frypot

1. Perform Procedure 1.5, Replace Temperature Probe, Steps 1-7.

2. Perform Procedure 1.2, Replace Computer/Controller, Steps 1-3.

3. Perform Procedure 1.7, Replace High-Limit, Steps 1-4.

4. Disconnect the element wire harnesses.

5. Remove the screws securing the capping piece from the fryer. Remove the capping piece and set

aside.

6. If the fryer has a built-in filtration system, remove all the plumbing from the frypot, including

oil-return and drain plumbing.

7. Remove the screws securing the frypot to the front frame of the fryer.

8. Carefully lift the frypot from the cabinet.

9. Remove the drain valve from the old frypot and install on the new frypot.

10. Apply Loc-Tite Sealant PST 567 to the high-limit threads. Install high-limit into the new frypot.

11. Disconnect the tilt plate springs from the old frypot.

12. Remove the securing screws from the tilt plate. Lift the tilt plate/heating element assembly from

the old frypot and install on the new frypot.

13. Follow the preceding steps in reverse to install the new frypot into the fryer.

14. NOTE: Apply Loc-Tite Sealant PST 567 to all pipefittings prior to installation.

1-10

ULTIMATE ELECTRIC SERIES FRYERS

CHAPTER 1: SERVICE PROCEDURES

1.9 Replace Contactor (Latching or Heating)

1. Perform Procedure 1.2, Replace Computer/Controller, Steps 1-3.

2. Identify faulty contactor. Remove all wiring

connected to the contactor terminals (circles) inside the component box. Tape wire-pairs together and mark each wire-set or wire for reassembly.

3. Remove contactor-mounting screws (arrow)

and remove the contactor.

4. Install the new contactor and connect the

wiring removed in Step 2.

Remove contactor-mounting screws after removing all wiring from the contactor (circles).

1.10 Built-in Filter System Service Procedures

Troubleshooting Built-In Filtration Systems

One of the most common errors is placing the filter paper on the bottom of the filter pan rather than over the filter screen.

CAUTION

Ensure that the paper support screen is in place prior to filter paper placement and

filter pump operation. Improper screen placement is the major cause of filter system

malfunction.

Whenever the complaint is "the pump is running, but no oil is being filtered", check the installation of the filter paper, and ensure that the correct size is being used. While you are checking the filter paper, verify that the O-rings on the supply line connection are present and in good condition. Missing or worn O-rings allow the pump to take in air, decreasing its efficiency. In addition, oil leaks into the fryer and on the floor each time a frypot is filtered.

1-11

ULTIMATE ELECTRIC SERIES FRYERS

CHAPTER 1: SERVICE PROCEDURES

1.10 Built-in Filter System Service Procedures (cont.)

If the pump motor overheats, a circuit breaker will trip and the motor will not start until the breaker is reset. If the pump motor does not start, press the white reset button located under the component box, inside the cabinet.

If the pump starts after resetting the breaker, then something is causing the motor to overheat. A major cause of overheating is when several frypots are filtered sequentially, thus overheating the pump and motor. Allow the pump motor to cool at least 30 minutes before resuming operation, and allow time for the motor to cool between sequential frypot filtering.

Pump overheating can be caused by:

• Solidified shortening in the pan or filter lines,

• Attempting to filter unheated oil or shortening.

Cold oil and shortening are more viscous, causing the pump motor to load up and overheat. Always filter with the oil or shortening at operating temperature [~350°F (177°C)].

If the motor runs but the pump does not, there is a blockage in the pump. Incorrectly sized or installed paper/pads will allow food particles and sediment to pass through the filter pan and into the pump. When sediment enters the pump, the gears bind, causing the motor to overload, again tripping the thermal overload. Shortening that has solidified in the pump will also cause it to seize, with the same result.

A pump seized by debris or hard shortening must be disassembled, cleaned, and then reassembled before continuing use. Use the following procedure:

1. Disconnect power to the filter system.

2. Remove the front cover of the pump to access the gears inside (see illustration below- 8-GPM

pump shown), if the pump is accessible while still inside the cabinet.

Remove bolts to remo ve

pump cover.

1-12

Remove debris or hardened

shortening to free gears.

ULTIMATE ELECTRIC SERIES FRYERS

CHAPTER 1: SERVICE PROCEDURES

1.10 Built-in Filter System Service Procedures (cont.)

3. If the front cover is not accessible, the pump must be removed from the pump motor (remove

input/output plumbing from the pump prior to removing pump). Remove three setscrews from the pump-shaft housing to disengage the pump from the motor. Remove the gears and thoroughly clean all internal components. Ensure the inside of the pump housing is free of any

debris or hardened shortening before reassembling. Failure to completely clean the inside housing and ring gear will cause gear binding after reassembly.

Filter paper/pads that are the wrong size or installed incorrectly will also allow food particles and sediment to pass through and clog the suction tube in the bottom of the filter pan. Particles large enough to block the suction tube may indicate that the crumb tray is not being used.

1.11 Basket Lift Service Procedures

Ultimate Electric Series fryers may optionally be equipped with automatic basket lifts to ensure uniform cooking times. Electric fryers can be equipped with "modular" or "bell-crank" basket lifts.

A modular basket lift (illustrated) consists

of a toothed rod to which the basket lift arm is attached, a reversible-drive gear motor and a pair of roller-activated microswitches. The gear motor engages the teeth in the rod, moving it up or down, depending upon the direction of rotation of the motor. Microswitches at the upper and lower limits of movement stop the motor when the basket is in the full up or full down position.

Timing circuitry in the controller initiates and stops basket lift operation depending upon the variables programmed by the operator. When the product button is pressed, or the manual control is activated, the timing circuitry activates a coil in the basket lift relay to supply power to the lower microswitch. The microswitches stop the motor at the lift’s upper and lower travel limits and reverse the direction of current flow thus reversing the motor direction.

Modular Basket Lift Assembly (Typical).

1-13

ULTIMATE ELECTRIC SERIES FRYERS

CHAPTER 1: SERVICE PROCEDURES

1.11 Basket Lift Service Procedures (cont.)

Simplified Schematic

1 or 4

To computer/controller via

interface board

Basket Lift

Relay

Normally Open Upper-limit

Microswitch

Normally Closed Lo wer-limit

Microswitch

When the product button is pushed on the computer/controller, current flows through a coil in the basket lift relay, causing the lower circuit to be activated. The basket lift lowers, closing the normally open upper-microswitch. When the lower normally closed microswitch is opened by the downward moving lift rod, power to the motor ceases to flow. When the computer/controller timesout, the current to the relay coil is interrupted, allowing the upper circuit to be activated. The basket lift then raises and closes the lower microswitch. When the basket lift rod clears the upper microswitch, the microswitch opens, and power to the circuit is interrupted, stopping the motor. Pushing the product button or activating the manual control (if equipped) restarts the cycle.

Problems with the modular basket lift design can be grouped into three categories:

● Binding/jamming problems

● Motor and gear problems

● Electronics problems

1-14

ULTIMATE ELECTRIC SERIES FRYERS

CHAPTER 1: SERVICE PROCEDURES

1.11 Basket Lift Service Procedures (cont.)

BINDING/JAMMING PROBLEMS

Noisy, jerky or erratic movement of the lifts is usually due to lack of lubrication of the rods and their bushings. Apply a light coat of Lubriplate or similar lightweight white grease to the rod and bushings to correct the problem.

With the modular basket lift, another possible cause of binding is improper positioning of the motor, which prevents the gear from correctly engaging the teeth in the rod. To correct the problem, loosen the screws that hold the motor in place and move it forward or backward until the rod has just enough slack to be rotated slightly.

MOTOR AND GEAR PROBLEMS

With the modular basket lift, the most likely problem to be encountered in this category is erratic motion of the lift due to a worn drive gear. Failure to keep the lift rod and bushings properly lubricated will cause unnecessary wear of the gear. The problem is corrected by replacing the worn gear.

If the lift cycles correctly but fails to remain in the up position (i.e., goes up, but then slowly settles back down into the frypot), the problem is a failed motor brake. The motor must be replaced.

If power is reaching the motor but the motor fails to run, the motor is burned out and must be replaced.

ELECTRONICS PROBLEMS

Within this category are problems associated with the relays, microswitches, capacitors, resistors, interface board, wiring, and controls. The most common problem in this category is a lift that continuously travels up and down. This is usually caused by a microswitch that is out of adjustment.

Troubleshooting the electronics of a modular-type basket lift is simply a process of verifying current flow through the individual components up to and including the motor. Using a multimeter set to the 250 VAC range, check the connections on both sides of the component for the presence of the applied line voltage. The accompanying simplified wiring diagrams identify the components and wiring connection points.

1-15

ULTIMATE ELECTRIC SERIES FRYERS

CHAPTER 1: SERVICE PROCEDURES

1.11 Basket Lift Service Procedures (cont.)

Ultimate Electric Series fryers, used to cook large amounts of bone-in chicken in a single drop, are

equipped with bell-crank style basket lifts.

Two components, a cam and bell crank, are connected to the basket lift arm by a flat metal link. The cam is attached to a drive motor. The motor rotates the cam, thus raising or lowering the lift arm linked to the bell crank. A rolleractivated microswitch is used to limit travel. When the roller in the microswitch is in contact with the cam, the motor is energized. As the cam rotates, the roller loses contact with the cam and the motor power circuit is broken, de-energizing the motor.

Bell-crank style basket lift.

Timing circuitry in the controller initiates and stops basket lift operation. When the product button is pressed, the timing circuitry activates a coil in the basket lift relay to supply power to the motor. The microswitch stops the motor at the lift’s lower travel limit and the switch contacts are reversed. At the end of the programmed cooking time, the timing circuit activates the coil once more and the lift rises until the microswitch again loses contact with the cam, opening the motor power circuit and stopping the motor. A typical bell-crank wiring diagram is shown below.

REFERENCES TO LEFT & RIGHT ARE FROM REAR OF FRYER

LH SIDE

ALL RELAYS 12VDC COIL

N.O.

N.C.

RED

BLU

132 NC

5 4

2 1

B.L.COM 2

COM

6 5 4

WHT

COM

2 1

FUSE 5AMP

LINE LOAD

LINE COM

B.L. LH

WHT

RH SIDE

COM

NC 5

3 2 1

GRD

B.L. COM

BLK

COM

B.L. RH

PUR

ORG

N.O.

N.C.

1-16

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