JBT MFJ 2nd Generation User Manual

2nd Generation

Multi-Fruit Juicer

Service Manual

June 2019

nd

2

Generation

Multi-Fruit Juicer

Service Manual

JBT Corporation 400 Fairway Avenue Lakeland, FL 33801 (863) 683-5411

Manual No. FNS-0014-060-EN

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Fruit size: 2 1/2" to 3 3/4" diameter (6.5 cm to 9.5 cm) Oranges — FL: ·································· 125 to 50 count Oranges — CA: ································· 138 to 48 count Grapefruit — FL: ································ 56 to 48 count Hopper capacity: ································ 80 Ib. (2 cartons) (36 kg) Reservoir capacity: ···························· 3.5 gal. (1 carton) (13.2 liters) Waste container capacity: ···················· 40 Ib. of peel (2 cartons) (18 kg) Three Speeds:·································· 25 fruit/minute, 29 fruit/minute, 33 fruit/minute

Electrical Specifications

115V, 60 Hz Single Phase 15 AMP Service on a dedicated circuit 10 GA. wire — up to 200 ft. from main breaker panel

or 220 VAC, 50 Hz / 60Hz Single Phase 16 AMP Service 10 GA. wire — up to 200 ft. from main breaker panel

Shipping Specifications

Height: 65.4" (166 cm) Width: 26" (65 cm) Depth: 35" (89 cm) Weight: 711 Ibs (323 kg)

Patents

U.S. Patents - #4905586 and #4922814 and Patents Pending

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General Information

The JBT Corporation Juicer is designed to provide years of dependable service. It uses a unique patented design to extract every available amount of juice from the fruit with the least amount of peel oil. The peel is completely separated from the juice and juice sacs before being compressed and strained.

The machine will juice all types of citrus — oranges, grapefruit, lemons, limes, tangerines, etc. — without changing or adjusting parts. In fact, different varieties and sizes of fruit can be juiced to create various fruit juice blends.

Clean-up is simple, requiring disassembly of only five parts. All waste material — peel, membranes, and seeds — is collected in a disposable garbage bag for easy removal and disposal.

The Juice Extractor is solidly built using heavy duty components in all assemblies, including the drive. It is simple to operate and uses a minimal number of parts.

ALWAYS follow cleaning and maintenance schedules in this manual to prevent equipment damage and maintain juicer performance.

Figure 1. 2nd Generation Multi-Fruit Juicer

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Figure 2. Juicing Components Assembly

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B

C

B C D A D

Juicer Screen Descriptions

Standard Start Screen

Self-Service Start Screen

A. Start Button – Starts juicing

B. Go to Settings – Options to change the juicing speed and the animation shown while juicing.

C. Go to Status – View various information about the unit.

D. Go to Service – Various settings for the juicer (service personnel only).

Access requires a password which is simply “1”.

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Service 1

A B C D E

F

A. Total Cycles – Indicates the total number of cycles the juicer has run. This is value can be

changed by clicking on it. This is only meant for cases where electrical boxes are being replaced so that the total juicers cycles will not be lost.

B. Cycles since last service – Indicates how many cycles have run since the last time the juicer

was serviced.

C. Reset Service Date – The button to the right of this will reset the service date shown below as

well as on the status screen.

D. Last Service Date – This shows what the date of the last service was for the juicer. The format

for this date is: Month Day Year.

E. Support Phone Number – Phone number for the service company for the juicer. To change

the number, simply click on the number itself and a keyboard will appear. If desired, dashes and symbols can be added by clicking the down arrow on the top left twice, the dash is next to the enter button. Click the up arrow in the top left to return to the numbers. This phone number appears for general users on the Status page and Safety Fault screen.

F. Constant speed setting – Setting for testing the juicer at a constant speed either slower or

faster than normal operation. To use this feature the juicer must be on the normal speed setting (top option on the settings screen). Once on this setting, the juicer will operate at whatever frequency is specified here between 15 and 90 Hz. For example, with this feature the juicer can be set to run at 15 Hz to see if parts are interfering with each other. This is programed to default to 60 Hz whenever the juicer is powered off so as not to affect customer operation.

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A

B D E C F

Service 2

A. Clock – To change the date and clock, click on the numbers. Date and time format are show

above. Time is based on 24 hour format

B. Machine number – Click the numbers to enter the juicer's serial number. The serial number

can be found on the plate on the back of the juicer towards the bottom. The number entered here is also displayed on the status page for general users to view.

C. Store number – Optional feature for entering an identification number for the facility where the

juicer is located. Currently not used elsewhere in the software.

D. Safety Check – Only viable on certain juicers. This provides a warning (shown later) if a safety

sensor has failed or is unplugged.

a. Turning this on for juicers that do not support this feature (certain juicers with serial

number starting with 83 and 93) will cause the safety circuit fault to always be on, regardless if the safeties work or not. Refer to Safety Circuit Fault screen to turn off.

E. Tap – Changes how the juicer is operated. When activated, the juicer will run when the tap

handle is depressed, there is no longer a start button. Be aware that this feature requires several physical alterations to the juicer including removal of the tank, a new front door, tap housing, new safety sensor assembly, and modified juice manifold.

F. Language – Selection page to determine what language all the text is displayed in, available

languages are shown next.

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Languages

Selection for the language of all of the text found in the software. If language is changed accidentally this page can be reached from the start screen or tap screen by:

1. Enter service page (gear icon) – again password is "1".

2. Click the next button (right arrow) found on the bottom right.

3. Click the globe text bubble on the right.

There are currently six available languages as shown here.

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A

Processing Screens

These screens appear when the juicer is actively running.

There are two animations available which can be chosen on the settings page.

A. Stop Button – Juicer will continue to run until it reaches the point when the cups are farthest apart.

• NOTE 1 - In tap mode, the tap handle must be held down for this to function. Once the

juicer has stopped, then the handle can be released.

• NOTE 2 – if the positioning sensor is not functioning this stop button will cause the juicer

to stop immediately.

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Front Door Open

This screen indicates that the front door is not properly closed. The juicer will not run until the door is fully closed

If this screen is appearing when the hopper door is open it indicates that the cables on the back of the electrical panel are reversed. These are the two smaller plugs next two each other with two cables entering the back of each plug. Switch these two plugs. Open the front door and ensure the correct screen appears.

If this screen is always on it indicates that the front door safety sensor has malfunctioned. Verify by swapping the safety cables on the back of the electrical panel. The error message should switch to the hopper door and still remain on constantly. The cable assembly will need to be replaced, make sure the cables are connected in their correct location if they had been swapped for testing.

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Hopper Door Open

This screen indicates that the hopper door or fruit loading door on top is open. The juicer will not run while this door is open

If this screen is appearing when the front door is open it indicates that the cables on the back of the electrical panel are reversed. These are the two smaller plugs next two each other with two cables entering the back of each plug. Switch these two plugs. Open the hopper door and ensure the correct screen appears.

If this screen is always on then it indicates that the hopper door safety sensor has malfunctioned. Verify by swapping the safety cables on the back of the electrical panel. The error message should switch to the front door and still remain on constantly. The cable assembly will need to be replaced, make sure the cables are connected in their correct location if they had been swapped for testing.

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A

B

Settings Screen

A. Speed setting - The juicer can run at 25, 29, or 33 fruit per minute. Be aware that some harder

or larger fruit may not process at the higher speeds, attempting to do so could lead the juicer to stall repeatedly.

B. Display setting – Controls the animation seen while the juicer is running (the processing

screens shown previously).

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A B C

D

E

Status Screen

This mirrors a lot of the information on the service screen but here it cannot be edited.

A. Total Cycles – Indicates the total number of cycles the juicer has run.

B. Cycles since last service – Shows how many cycles have run since the last time the juicer

was serviced.

C. Last Service Date – Date of the last service was for the juicer.

Format for this date is: Month Day Year.

D. Support Phone Number – Phone number for the service company for the juicer.

E. Juicer serial number – Serial number for the juicer.

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Juice Tank Full

When this screen appears it means that the juice tank is full and the juicer has stopped. The juicer will not run again until juice is removed from the tank.

Motor Fault

If this screen appears it means that motor has stopped. This is usually caused by a blockage, large fruit, hard fruit, frozen fruit, or something else. Press the button for the juicer to restart. If the error continues, the blockage will need to be removed manually. *Always power off the juicer before attempting to clear any blockage.

In some rare cases the juicer may need to be manually moved in order to clear the blockage.

If this screen appears often, it may mean the juicer is being run at too high of a speed for the fruit being used. Try using one of the slower speeds to prevent this.

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Position Sensor Error

This error message occurs because the juicer is operating, but the position sensor (also referred to as TDC or Top Dead Center sensor) has not been detected. The juicer is still capable of running, but several features will be disabled. These features include:

1. The speed settings will not function properly, this could lead to the juicer stalling often.

Normal operation at the two faster speeds the juicer will slow while pressing the fruit to achieve more power. If the position sensor is not detected, the juicer will not slow down and instead run constantly at the faster speed. This will likely lead the juicer to stall more because it does not have the power to properly press the fruit.

2. Pressing the stop button now will cause the juicer to stop immediately instead of running

until the cups are farthest apart.

3. Cycle counts will no longer be tracked.

Unplug the juicer and open the back panel, make sure that the safety sensor is connected.

If the sensor seems to work intermittently, check the position and mounting bracket used to hold the position sensor. The bracket is not symmetrical and should be mounted so that the sensor holes are near the back of the juicer and away from the juicing components. Also, the sensor itself has slots so when mounted, the sensor should be pushed towards the back of the juicer as much as possible.

Improper positioning can cause the juicer to double count cycles. If work is done on this sensor, be sure to check the cycle count. Run the juicer for five cycles and recheck the cycle count.

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A

Safety Circuit Fault

When this message occurs it indicates there is a problem with one of the safety sensors. The juicer will not run until the problem has been fixed.

It is possible one of the cables is not connected. Turn off the juicer and verify that all cables are connected properly.

If the cables are connected, then it is possible a safety sensor has failed. Follow the procedure for checking safety circuits in the “Electrical Drawings and Procedures” section of this manual to determine which sensor is faulty.

This screen can be disabled. There is a hidden button in the bottom right corner (A), this pulls up the password which is the same as for the service screen. Once on the service screen, go to the second service screen and turn off the safety check.

NOTE: This will not fix a problem, if a cable is unplugged or safety has failed, the juicer will still not run.

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Battery Warning

If this error message occurs, it indicates that the battery in the touch screen is running low. The juicers are setup so they should run if the battery dies. However, in some cases the software will be lost and the juicer will not operate. It is best to replace the battery as soon as possible.

Refer to the battery replacement procedure in the “Electrical Drawings and Procedures” section of this manual.

If the battery was just replaced and the screen still appears, ensure the correct battery was used, the battery is firmly seated, and there are no smudges or fingerprints on the battery when it is inserted.

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Maintenance

Before performing any maintenance,

DISCONNECT ELECTRICAL PLUG.

LOCK FRONT AND REAR CASTER WHEELS.

After every juice run:

1. Check cutter and knives for sharpness.

Refer to Figure 6 to determine condition of cutter. If dull, sharpen with a whetstone provided. Refer to Figure 6 to sharpen cutter.

If cutter is severely damaged or rolled over, replace cutter.

a. Cutter removal:

CAUTION: CUTTER AND KNIVES ARE SHARP.

b. Cutter installation:

Disassemble juicing components (Figure 2). Loosen set screw under front knife (make sure screw is backed out far enough to clear cutter). Cutter should lift out, if not, tap the cutter lightly from inside the juice manifold with a 1-1/4" diameter rod (hammer handle).

Install red protective cap provided onto cutter. After red protective cap is installed, remove cutter. Handle cutter with care to avoid direct contact with sharp edge.

Align arrows on cutter and juice manifold to seat cutter. Make sure cutter is fully seated. Tighten set screw. (DO NOT over-tighten.)

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Figure 6. Sharpening Cutter

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Maintenance (continued)

2. Check orifice tube for damage. Refer to Figure 7.

Replace tube when:

a. Chunks are missing from top end.

b. Score marks 1/32" or deeper appear along the length of the tube.

Figure 7. Severely Damaged Orifice Tube

3. Check for loose or missing nuts and bolts.

a. Tighten or replace nuts and bolts as necessary.

b. DO NOT exceed torque ranges specified.

c. ALWAYS use JBT Corporation recommended spare parts.

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Figure 8. Proper Orifice Tube Installation

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Periodic Inspection

Perform the following steps every week.

1. Test all access cover interlock switches.

Juicer should stop automatically when any access cover is opened. Individually open and close the front door and hopper access door. If juicer continues to run when front door or hopper access is opened, the interlock switch is defective.

Stop the juicer and replace the defective interlock switch immediately.

See Troubleshooting Section.

2. Inspect casters for damage or wear.

Caster must roll freely and front and rear brakes must lock.

3. Check all fasteners for tightness.

Check especially on the Sprockets, Crank Arms, Fruit Lift and Hopper.

4. Check chain for tightness. Refer to Figure 9.

Chain should have 1/4 inch maximum slack on top side. To adjust, loosen the tensioning bolt located on the chain tensioner until 1/4 inch of slack is measured.

CAUTION: DO NOT OVER TIGHTEN CHAIN.

5. Check chain and sprockets for rust.

Lubricate chain and sprockets should rust appear. JBT Select FG Spray (Non-Drip), p/n 575054, is recommended.

6. Lubricate grease fittings with JBT Select 2FG grease, p/n 575066.

Figure 9. Checking Chain Slack

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7. Check gear motor.

If Juicer has been laid on its side for any reason (i.e., during shipping), or if there is any evidence of oil leak, check oil level and add oil, if necessary. Refer To Figure 10.

Use FUCHS FM220 GEAR OIL FG only.

8. Check hopper.

To remove hopper, fruit lift (upper cup drive) must be in down position. Remove two spanner screws using spanner wrench. Remove hopper.

Figure 10. Gear Motor

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Troubleshooting

• Juicer will not turn on

1. Juicer is not plugged into electrical outlet.

2. Building circuit breaker or GFI has tripped (reset).

3. Loose wire connection.

Check that all electrical connections are properly installed and secured.

4. On/Off power switch is disconnected

a. Unplug the juicer. b. With the Front door open loosen the four screws holding the electrical box closed. c. On the backside of the lid insure that the two black wires (103 and 104) are connected to the

On/Off switch.

d. If power switch is broken replace lid of electrical box or the entire box.

• Juicer starts, but shuts off

1. Juicer is tripping GFCI outlet

Certain GFCI outlets will not support the juicer. Have electrician replace with a compatible outlet.

Known compatible outlets include all models of Legrand 1597 for 15 Amp service and all models of Legrand 2097 for 20 Amp service. Others may work as well

2. Building circuit breaker is not properly rated for 15 Amps.

3. Extension cord or wiring is too long. Shorten extension cord or use heavier gauge wire. (See Page 6 "Electrical Specifications")

4. All covers not completely closed (including cart).

Juicer may be flexing when squeezing fruit, causing switch to open. Make sure all latches are completely locked.

5. The hopper and door cables are reversed.

a. Unplug juicer. b. Remove the hopper access panel. c. Unplug the hopper and front door cables (two smaller connectors on top and farthest from

access panel).

d. Switch the cables and plug them back in.

• Juicer will not start

1. Covers are not completely closed.

Open and close both doors, make sure the sensors are securely fastened and then ensure the doors are firmly closed.

2. Safety sensor has failed. Refer to checking safety sensors to identify broken safety sensor and replace as necessary.

3. Loose wire inside electrical box

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Troubleshooting (continued)

• Safety Circuit Fault screen will not go away

1. Safety sensors are not connected properly.

a. Turn off Juicer and unplug from outlet. b. Remove the hopper access panel. c. Insure that all the cables on the back of the electrical box are installed and the twist locks on

the connectors are tight.

2. A safety sensor has failed.

a. Follow procedures for checking safety circuits in the “Electrical Drawings and Procedures”

section of this manual.

b. If Faulty sensor is found, replace safety sensor and cable assembly.

3. Electrical box does not support safety circuit monitoring (Only perform these steps if previous troubleshooting steps do not fix the problem, the process will disable this function on the juicer)

a. Click in the bottom right corner of the fault screen. b. Enter the password for accessing the service screen. c. Enter the second service page. d. Turn off the safety check.

NOTE: This does not fix an issue, it just disables the screen. If performed on a juicer with this feature, the juicer will not run. The issue must be fixed and the safety check needs to be turned back on.

• Juicer runs extremely slowly

1. Constant speed feature has been enabled.

a. Turn juicer off and back on to correct

2. Variable frequency drive programing has been changed

a. Refer to the procedure for re-programing the VFD in the “Electrical Drawings and Procedures”

section of this manual.

b. Follow procedure at the bottom for a Factory Reset

c. Return to the top and follow procedure to program the drive from the beginning

3. PLC terminal strip not firmly connected

a. Unplug the juicer b. Loosen the four screws on the front of the electrical box c. On the back side of the lid make sure the green strips connected to the PLC are fully seated

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