metcalfe MP20 20 Litre Heavy Duty Bench Mounted Mixer Instruction Manual

metcalfe MP20 20 Litre Heavy Duty Bench Mounted Mixer

Your Mixer

Metcalfe MP20 (20 Litre Heavy Duty Mixer)
The Metcalfe MP20 has a total bowl capacity of 20 Litres. The three mixing tools provided ensure that all mixing requirements are met.

Features

• Gear driven
• Three speeds (140, 260 and 473) rpm
• Heavy duty heat-treated steel gears and shaft
• CE approved
• Safety interlocked bowl guard and bowl lift
• Stainless steel guard
• Emergency stop button
• Dual bowl clamps to lock bowl down
• Heavy duty gearbox
• Protective non-slip covers for feet to protect counters and provide stability
• Heavy duty, cast iron frame
• No volt release
• Resettable thermal overload
• Industry standard #12 attachment hub
• Optional meat mincer attachment available
• Optional veg prep attachment available
• Optional 10-litre conversion parts available
• Optional stand or mobile trolley

Specifications

Model

| Capacity (Litres)| Phase (Ø)| Motor (Volt)| Frequency (Hz)| Power (kW / Hp)| Dimensions D x W x H (mm)| Net Weight (Kg)
---|---|---|---|---|---|---|---
MP20| 20| 1| 230| 50| 0.375 / 0.5| 530 x 456 x 802| 98

Installation

Unpacking
Unpack the mixer immediately after receipt. Please inspect the mixer to ensure no damage and all parts i.e. Bowl, Beater, Whisk & Dough Hook have been provided. If the machine is found to be damaged, keep all the packaging material and contact us immediately or contact your source of the equipment. Never attempt to operate the machine with damaged parts. Report any deficiencies to the dealer that supplied the machine.

You should receive with your mixer

• 1 x Stainless Steel Bowl
• 1 x Beater
• 1 x Whisk
• 1 x Dough Hook

If any of the above items were not received with your mixer, please refer to page 13 for contact details and inform us immediately for replacements.
Before using the mixer please read this manual thoroughly. Do not proceed with any installation nor operation if you have any questions or do not understand anything within this manual. Please see contact details on page 13 for assistance.
Carefully unbolt the mixer from the pallet using a wrench socket.
PLEASE NOTE: If the unit was supplied with Stand or Trolley, DO NOT dispose of the bolts as these will be required to secure the unit to either the Stand or Trolley.

Location

• Select a location for the machine with a minimum of 0.6m space around the machine for operating, cleaning and servicing.
• Position the machine in its proper working position. The machine must be installed on a flat, solid and dry floor. It is also suitable for bench mounting.
• The surface must be able to support a load of 122kgs
• It is recommended that the machine is level from front to back and from side to side. This will ensure the greatest stability.
• The rear ventilation outlet of the mixer must not be blocked
• The mixer should be bolted down into position using all four holes located in the legs.

Electrical Connection

• Before connecting the mixer to an electrical supply, please read the specifications on the rating plate to ensure that they comply with those of the electrical supply.
• Electrical connection should be made by a qualified service technician who will observe all applicable safety codes. The machine works off 220/240V 50Hz 1 phase supply and comes fitted with a 3-pin 13amp fused plug.
• An electrical supply should be available within the reach of the included power cord. DO NOT use extension cords to connect the machine’s power cord to the electrical supply. The low AMP supply could damage the mixer or cause a fire.
• The technician should install an over-current protection device (e.g. fuse or NFB) or Residual Current Device (GFCI) to prevent a current fault risk.
• Ensure that an isolating switch is fitted within 2m of the machine.
• All wiring connections must be checked and tight.

Hard Wiring

• The mixer can be hardwired into a switched socket which isolates all poles and has a minimum contact clearance of 3mm. It should be located close to the mixer for use in an emergency and to facilitate servicing.
• The machine must be incorporated into a potential equalization system.
• The leakage current for this appliance is no greater than 1 mA/KW.
• If the electrical supply cable to the machine becomes damaged, it must be replaced by the same specification or higher and suitable for the mixer’s motor load.
• The ground wire is fixed to the machine and this connection must be kept intact.
•  CAUTION: The mixer MUST be grounded.

3 Phase Connection
If you have a 3-phase mixer, when it is in position and connected, please make sure that the shaft goes clockwise. (Same direction as the arrow sticker that located on the front of the mixer). If the shaft goes counter-clockwise, please exchange the position of 2 phase wires: replace L3 with L2.
The mixer should be hardwired into a switched socket (see above).

Ambient Conditions

• The minimum requirement for all electrical equipment’s correct operation is an air temperature of between +5℃ and +40℃.
• Electrical equipment is capable of operating correctly when the relative humidity does not exceed 95% at a maximum temperature of +40℃.
•  Electrical equipment is capable of operating correctly at altitude up to 1000m.
• Electrical equipment is designed to withstand and be protected against the effects of transportation, and storage temperature within a range of -25℃ to +55℃ and for short periods not exceeding 24h at up to +70℃.
  Once the electrical connection has been made, the machine is ready for use.

Operation

Fitting the Bowl

NOTE: Install the bowl BEFORE attaching the agitator.

1. Lower the bowl lift handle anti-clockwise and down to its resting position.
2. Lift the bowl by the handles and slowly position the locking pin located at the rear of the bowl into the hole in the middle rear of the cradle. (Figure A)
3. Lower the bowl onto the pins located on either side of the bowl cradle.
4. Once the bowl is in position, secure it by pulling each bowl clamp forward until the bowl is locked tight. (Figure B)

Bowl Lift & Guard
Move the bowl lift handle anti-clockwise to lower the bowl. It is necessary to lower the bowl to change the tools, and to provide better access for filling and emptying the bowl. To raise the bowl, move the bowl lift handle clockwise until it hits the upper stops. The bowl cradle and guard are electrically interlocked so that the mixer will only operate when the bowl is in the raised position and the guard is locked in place. This ensures total user safety at all times. Once the guard has been opened and the bowl lowered the mixer can only be restarted by pressing the start button.
During operation additional ingredients can be added via the ingredients chute located on the right-hand side of the bowl guard.

Tool Selection
The beater, whisk and dough hook are meant for the work implied by their names. Do not use the beater for dough making or the whisk for anything other than whisking, aerating or mixing light mixtures. These are the typical uses for each of the tools supplied:

• Whisk
  Light mixes such as whipped cream, mayonnaise, egg whites, pancakes and soufflés

• Beater
  Firm mixes such as light pastry, cakes, biscuits, icing, fillings and mashed vegetables

• Dough Hook
  Heavy mixes such as dough and pastry

Fitting Attachments

• NOTE: Install the bowl BEFORE attaching the mixing tool.
• NOTE: It is easier to install the attachment prior to adding ingredients into the bowl.
• Open the bowl guard and lower the bowl.
• Slide the attachment slowly upwards onto the planetary shaft, fitting the shaft pin through the slot in the attachment. (Figure A)
• Rotate the attachment clockwise to secure it onto the planetary shaft.
• NOTE: Attachments should always rotate in a clockwise direction around the bowl. If an attachment is moving counter-clockwise please contact a licensed electrician immediately to remedy incorrect wiring.

Operation

• Place the gear selector handle to 1st gear, then turn on the machine. You will have to lift the bowl and close the safety guard before you will be able to start the machine.
• The machine must always be stopped before changing speeds. Failure to do so may damage the gears or other parts and will void the warranty.
• Never place your hand or any kitchen utensil in the bowl whilst the mixer is in operation.
• Never operate this machine with safety covers removed or with safety switches inoperative.
• When mixing is complete, turn off the machine and lower the bowl by lift handle/lever then take off the attachment.
• Then take out the bowl together with attachment.
• Finally take out the mixed ingredients.
• Please follow the capacity chart on the following page. Overloading or not following the chart will damage the mixer and void the warranty.

Speed Selection

• To change speeds, first turn off the mixer, then move the gear selector handle to the desired speed before restarting the mixer by pressing the start button.
• Number 1 is the slowest speed and number 3 is the highest speed.
• Slow Speed: for heavy mixtures such as dough, biscuits, etc.
• High Speed: for fast, light work, such as whipping cream, beating eggs, and mixing thin substances.
• The speed selected depends largely on the quantity and consistency of the product. It is recommended that mixing is always started at the lowest speed and progressively increased to the desired setting. In an emergency situation always use the red emergency stop button to stop the mixer. The below table show the recommended speeds for the range of tools.

Recommended Mixing Capacities

Mixing Heavy Dough
The moisture content of heavy dough is a critical factor when selecting the correct mixing speed. You should never use 2nd speed when mixing heavy dough with an Absorption Ratio (AR) of 50% or less. To determine the Absorption Ratio (AR) of a product, divide the water weight by the flour weight.
Example: Calculate the Absorption Ratio of a mixture containing 50g of water and 100g of flour. 5 ÷ 10 = 0.50 = 50 % = AR

• If high gluten flour is used, reduce above dough batch size by 10 %
• Capacities listed are based on flour at room temperature and water at 20°C. If using chilled flour, water below 20°C, or ice, reduce batch size by 10%

Attachment Hub

Never put your hand into the feed chute when using any mixer attachment.
The mixer must be OFF before installing attachments! Do NOT use attachments while mixing!

1. Loosen and remove the attachment hub thumbscrew

2. Remove the cover from the attachment hub

3.  Lubricate the attachment shaft with a food quality grease or mineral oil

4. Insert the attachment shaft into the hub making sure to line up the alignment pin with the hub hole.

5. Tighten the thumbscrew back into the hub and securely tighten it.

6. Select the appropriate speed setting by lifting or lowering the speed control lever.
   NOTE: Make sure the bowl is up and the bowl guard is closed otherwise the mixer will not start.

7.  Press the start button located on the middle of the control panel.

8. Always stop the mixer before changing speeds. Failure to do so may damage the gears or other parts and will void the warranty.

9. To change the speed while using the mixer attachments, first press the stop button, then change the speed using the gear control lever. Then press the start button to restart the machine.

The below table shows the recommended speeds while using the hub attachments:

Cleaning Instructions

• ALWAYS disconnect from the power source when cleaning or servicing this machine.
• ALWAYS remove the attachment/s after each batch. If not, the attachment/s can become stuck on the shaft and difficult to remove.
• NEVER attempt to clean this machine while it is in motion, serious injury could result.
• NEVER use a scrubber pad, steel wool, or abrasive material to clean the mixer.
• NEVER use bleach or bleach based cleaner.

Recommended Cleaning

Attachments

| ****

Hand wash using soap and water, rinse, dry and sanitise.

| ****

Clean after each use

Guard

| ****

Hand wash using soap and water, rinse, dry and sanitise.

| ****

When required

Bowl

| Using a sponge or cloth, soap and water, apply pressure

to ensure the bowl is clean, rinse, dry and sanitise. The bowl can also be placed in a dishwasher

| ****

Clean after each use

Solid Bowl Guard| Hand wash using soap and water, rinse, dry and sanitise.| Clean after each use
Bowl Cradle| Hand wash using soap and water, rinse, dry and sanitise.| Daily
Planetary Shaft| Wipe with a clean damp cloth, dry & sanitise.| Clean after each use
Exterior| Hand wash using soap and water, rinse, dry and sanitise.| Daily
Hub Interior| Wipe with clean damp cloth, dry & sanitise.| Daily

Maintenance

Regular maintenance is necessary on all mixers if they are to run smoothly and problem free.

Planetary Ring

| Reapply grease. Inject grease (2 pumps only) into fitting on the side of planetary housing. DO NOT overfill|

Once a year.

Bowl Slide Rods

| Apply food quality grease on the bowl slide rods. Raise and lower the bowl to distribute the grease onto the rods.| If the bowl becomes difficult to raise or lower.

Troubleshooting

Mixer will not turn

| Bowl guard not in closed

position

| Rotate guard to the right until fully closed.
Bowl not raised| Raise bowl to highest position.
Power not connected correctly| Check all power connections.

Plug into a live socket (d o not use extension cord!). Test socket with another item.

Building circuit breaker is off| Check breaker box

Internal overload tripped

| Wait two minutes.

Press stop button then press start button.

( If overload continues to trip, reduce batch size

and/or adjust recipe!)

Gear not engaged

| Switch gear fully into position.

( Mixer will not operate if the speed control lever is positioned in-between speeds)

Mixing stops during mixing

| ****

Internal overload tripped

| Wait two minutes.

Press stop button then press start button.

( If overload continues to trip, reduce batch size and/or adjust recipe!)

Mixer is noisy

| Mixer is not installed on level surface| Adjust surface or relocate mixer.

Make sure the rubber feet are installed

Bowl not seated correctly or

clamps not in place

| Ensure bowl is seated into bowl cradle correctly

and bowl clamps are locked into place

Attachment not fitted

properly

| Remove and re attach attachment into position

correctly

Overloading bowl| Reduce batch size (see capacity chart)
Planetary ring gear needs

more grease

| Technician to inspect for source of noise
Safety guard seized (will not move freely)| Clean & lubricate slide sheath| Technician must drop down planetary assembly to access mat & sheath
Attachments won’t go onto the planetary

shaft easily

| Lack of lubrication and /

Or cleaning of the planetary

shaft

| Wipe planetary shaft with a clean damp cloth and lubricate the shaft with mineral oil or food quality

grease

Mixing time is too long

| Three-phase mixer is wired incorrectly| Attachments should rotate clockwise around bowl. If not, electrician must rewire

Batch size too small

| ****

Increase batch size or use half size conversion kit

Bowl lift sticking or not operational| Lack of lubrication on bowl slides| Lubricate bowl slides with food quality grease. If still sticking, technician must clean bowl lift

mechanism

One or more gears not working| Damaged or broken gear(s)| Technician to replace gears.

Always stop mixer before changing gears.

Mixer will not mix medium or heavy loads| ****

Incorrect or low voltage

| ****

Contact electrician

remove hub and clean interior.

To avoid problem, always wipe hub and dry after

each use

Attachments touching bottom or sides of bowl| Defective or dented bowl| Remove dents or replace bowl
Defective attachment| Replace attachment

Broken whisk wires

| Batch size too large for mixer Items too firm

Speed too high

| Reduce batch size (see Capacity Chart) Adjust recipe

Reduce speed

Hand utensil dropped into bowl while mixing| Stop mixer before working on mixture

Broken beater

| Ingredients too cold or too large (e.g. frozen butter/ cream cheese cut in chunks)| Wait for ingredient to reach room temperature before mixing

Reduce chunk size

Broken dough hook

| Batch size too large for mixer| Reduce batch size (see Capacity Chart) Adjust recipe
Ingredients too cold or too large| Wait for ingredients to reach room temperature before mixing

Reduce chunk size

Discoloration of mixed product| Bowl has not been cleaned thoroughly| Clean bowl again (refer to page 10)

Spare Parts and Service

For more information on Metcalfe spare parts, accessories and service support, including breakdown drawings and parts lists please contact us on the details below.
Please always quote the Serial Number of the machine. This can be found on the serial number plate which is located on the rear of the machine.

• Metcalfe Sales & Spares Department sales@metcalfecatering.com
• Metcalfe Service Department service@metcalfecatering.com
• Metcalfe Website www.metcalfecatering.com
• Metcalfe Telephone Number 01766 830 456

Additional copies of this instruction manual can be obtained by either visiting our website or contacting the sales department.

Metcalfe Warranty

• All Metcalfe products are guaranteed against defects in material and workmanship for a period of one year from date of Invoice, except where specially noted.

• The Company’s obligation under this warranty is limited to repairing or replacing, without charge, any part or parts found to be defective under normal use, in accordance with the specified operations manual and capacity ratings.

• On all return to factory warranty items, it is the responsibility of the purchaser to return the entire unit to the factory, in a clean condition, properly packed and labelled.

• All repairs, alterations or replacement of materials or parts not authorised by Metcalfe will automatically void all warranties in their entirety.

• All Metcalfe slicers (except Simple Line) are covered by a 2-year warranty (1st year parts and labour, 2nd year parts only) and full after sales service.

• All Metcalfe MP mixers are covered by a 3-year warranty (1st year parts and labour, 2nd & 3rd
  year parts only) and full after sales service.

• There is a limited 6-month warranty on the following:

  • Mixer attachments (beater, whisk and dough hook)
  • Parts purchased or supplied for the repair of Metcalfe equipment

• This warranty does not cover the following:

  • Failure due to neglect, abuse, careless handling or misuse of machine
  • Failure caused due to improper maintenance
  • Blender clutches
  • Knives and gears on can openers
  • Sharpening of slicer blades
  •  General wear and tear
    Metcalfe and its suppliers reserve the right to make changes in design and specification to any product without prior notification.

Metcalfe Catering Equipment Ltd Haygarth Park Blaenau Ffestiniog Gwynedd, LL41 3PF

• t 01766 830 456
• e sales@metcalfecatering.com
• w www.metcalfecatering.com
  

References

• Metcalfe Catering Equipment | Metcalfe UK | Catering Distributor

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