MEFE CAT 139 8101 User manual

MEFE—Mitchell Engineering Food Equipment Pty Ltd
23 Storie Street Clontarf QLD 4019 Australia
www.mefe.com.au | [email protected]
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Operating Manual
Wet Knife Sharpener
CAT 139 8101
Revision 5

MEFE—Mitchell Engineering Food Equipment Pty Ltd
23 Storie Street Clontarf QLD 4019 Australia
www.mefe.com.au | [email protected]
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[phone]
Free AU 1800 669 006
General Safety Guidelines Before Using This Power Tool
• Always wear eye protecon and respirator.
• Keep Bystanders out of the work area while operang the tool.
• Wheel nuts and eye shields must be properly adjusted and ghtened.
• Always make sure wheels are properly mounted.
• Stand to the side of the sharpener during start up. Switch it on and let the sharpener operate at full speed for approximate-
ly one minute so that any undetected aws or cracks will become apparent.
• Keep guards in place and working properly.
• Keep hands clear of grinding wheels.
• Never reach behind or beneath grinding wheels.
• Disconnect power before changing grinding wheels or servicing. The grinding wheels connue to rotate aer the tool is
switched o. Always allow wheels to stop before adjusng or servicing. Do not forcibly stop grinding wheel.
• To avoid electric shock, DO NOT use in damp condions or expose to rain.
• When ng a new grinding wheel, always check that the stated maximum RPM meets or exceeds the RPM stated on the
sharpener, also check the wheel for damage, such as aws or cracks, if the wheel appears sasfactory, t it to the machine.
• When a new grinding wheel has been ed, allow one minute of operaon before use to check the wheel for aws.
• Only use accessories that are recommended by the manufacturer of your model.
• DO NOT aempt to cut anything using the grinding wheel.
• Grounded tools must be plugged into an outlet that has been properly installed and grounded in accordance with all local
codes and standards. Never remove the grounding prong from the plug or modify it in any way.
• Do not use adapter plugs, if in doubt as to whether the outlet is properly grounded, consult a qualied electrician.
• Do not use the tool when red or under the inuence of drugs, alcohol or medicaon.
• Do not wear loose clothing, gloves or jewellery; e up long hair and buon all long sleeve shirts.
• Ensure the power switch is o prior to plugging in the tool.
• Do not over ghten spindle nuts.
• Spacing between tool rest and wheels should be set to 1/8” or less; hold work piece rmly against tool rest.
• Service on these tools should only be performed by an authorized, qualied technician.
WARNING: Failure to follow these rules may result in serious personal injury!
Addional Specic Safety Rules
 DO NOT operate this machine unl it is completely assembled and installed according to the instrucons. A machine
incorrectly assembled can cause serious injury.
 OBTAIN ADVICE from your supervisor, instructor, or another qualied person if you are not thoroughly familiar with the
operaon of this machine. Knowledge is safety.
 FOLLOW ALL WIRING CODES and recommended electrical connecons to prevent shock or electrocuon.
 Failure to adhere to the following could result in fragments ying o the wheel at high speeds causing serious personal
injury:
• Always use the provided washer and nut to mount the grinding wheel on the sharpener sha to prevent wheel
damage or accidental separaon.

MEFE—Mitchell Engineering Food Equipment Pty Ltd
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• Use only wheels suitable for the speed of the machine
• Use only wheels that have a bore exactly equal to the sha of the machine. Never aempt to machine an under-
sized wheel to t the sha.
• Do not use a wheel that vibrates. Dress the grinding wheel, replace it, or replace the bearings of the sha.
5. Do not over ghten wheel nut.
6. Inspect wheels for cracks or fragments before starng the machine. Replaced damaged wheels immediately.
7. Adjust eye shields close to the grinding wheel, and readjust as the wheel wears down. Flying sparks are dangerous and
can cause res or explosions.
8. Always make sure eye shields are properly in place, adjusted and secured.
9. ADJUST TOOL RESTS close to grinding wheel (1/8” separaon or less). Tighten the tool rest securely to prevent shiing
posions and re-adjust as the wheel wears down. The work piece can be drawn into the wheel, causing damage to the
work piece and/or serious injury.
10. Make sure the machine is securely placed on a bench or stand before starng motor.
11. Stand to once side before turning the machine on.
12. Never grind on a cold wheel, run for a minute before use, a cold wheel has the tendency to chip.
13. Never start the machine with a piece of work against the grinding wheel, the work piece can be drawn into the wheel,
causing damage to the machine and/or serious injury.
14. Clean the machine thoroughly when processing dierent types of work pieces (wood, steel or aluminium) combining
wood and metal dust can create an explosion or re hazard, Do not grind or polish magnesium. Fire will result.
15. Never grind near ammable gas or liquids. Sparks can create a re or explosion.
16. Avoid awkward operaons and hand posions. A sudden slip could cause a hand to move into the grinding wheel.
17. Keep arms, hands and ngers away from the wheel. The abrasive surfaces can cause serious injury.
18. Always use the tool rest and hold work piece rmly with both hands when grinding.
19. Dress the wheel on the face only, dressing the side of the wheel could cause it to become too thin for safe use.
20. Grind a work piece using the face of the grinding wheel only.
21. Never apply coolant directly to the grinding wheel, coolant can weaken the bonding strength of the grinding wheel and
cause it to fail. Dip the work piece in water to cool it.
22. Do not touch the ground poron of a work piece unl it has cooled suciently. Grinding creates heat.
23. Properly support long or wide work pieces.
24. Never perform layout, assembly or set up work on the table/work area when the machine is running. A sudden slip
could cause a hand to move into the wheel.
25. Turn the machine o, disconnect the machine from power source and clean the table/work area before leaving the
machine. Lock the switch in the OFF posion to precent unauthorized use.
Please note: To prevent overheang the best operang pracce is to run the unit for no more than 15 minutes uninterrupted,
following a 5 minute cool down before further use. The machine should be used with a duty cycle of 75%.
You can run the machine for a maximum of 3-4 hours connuously, however this does run the risk of overheang the motor and voiding
your warranty. The copper wire can undertake 130°C, and the machine body can undertake 75°C.
WARNING: Read, understand and observe all instrucons in this manual before using or operang the
tool for which it is wrien and supplied. Ensure that anyone who is to use the tool has read and under-
stood the instrucons provided.

MEFE—Mitchell Engineering Food Equipment Pty Ltd
23 Storie Street Clontarf QLD 4019 Australia
www.mefe.com.au | [email protected]
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Parts List
No. Descripon Part No. Qty
1Horizontal mounts with knobs - 2
2Universal Support - 1
3Leather Stropping Wheel CAT 139 04 1
4Vercal mounts with knobs - 2
5On/o Switch - 1
6Honing Compound CAT 139 8 1
7Angle Guide - 1
8Water reservoir CAT 139 05 1
9Grinding Wheel CAT 139 02 1
10 Knife holder - 1

MEFE—Mitchell Engineering Food Equipment Pty Ltd
23 Storie Street Clontarf QLD 4019 Australia
www.mefe.com.au | [email protected]
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Package Contents
No. Descripon Qty
1Sharpener 1
2Universal Support 1
3Knife Holder 1
4Wet Grinding Wheel 1
5Water Reservoir 1
6Bolt Fla Washer 1
7Angle Guide 1
8Honing Compound 1

MEFE—Mitchell Engineering Food Equipment Pty Ltd
23 Storie Street Clontarf QLD 4019 Australia
www.mefe.com.au | [email protected]
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Placement
See gure 3 for the minimum working Clearances. Remember that
the sharpener has no specic front or back and must be reposioned
depending on the desired grinding/sharpening/honing acon.
To avoid damage to the rubber drive wheel during shipping.
The motor drive sha has been pulled away from the rubber wheel and held by Styrofoam. Before plugging in your machine.
Carefully lt machine on its side and carefully remove the Styrofoam that holds the motor.
To remove the motor shipping support
1. Make sure the machine is not connected to power.
2. Carefully place the machine on its back.
3. Hold the motor to prevent it swinging, remove the Styrofoam, then slowly release the motor.
4. Carefully return the motor to the upright posion.
Note: Remove the Styrofoam holding the motor before use!
Cauon: Failure to do this will put undue strain on the motor, resulng in potenal damage to the
machine components, and will void your warranty.
Maintenance
Grinding Wheels
The grinding wheels should be inspected before each use. Take care in storing grinding wheels to keep them free from
potenal damage from moisture, from being dropped or from having other items dropped on them.
Wheel Replacement
To replace the grinding or stropping wheel:
• DISCONNECT THE SHARPENER FROM POWER!
• Wait for wheel to stop then hold the wheel to stop it from turning and remove the nut holding the wheel on.
• Remove the outer washer and wheel.
• Install the new wheel, then replace the washer and nut.
Water Reservoir
Be sure to periodically empty, rinse and rell the reservoir with clean water depending on frequency of use. Failing to do so
can lead to a build up of sediment on the wheel itself, reducing grinding performance.
Figure 3

MEFE—Mitchell Engineering Food Equipment Pty Ltd
23 Storie Street Clontarf QLD 4019 Australia
www.mefe.com.au | [email protected]
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Grinding Tips
• Always be sure the grinding wheel is wet before grinding by having the reservoir lled and in the proper locaon.
• Wear the proper protecve clothing. Safety glasses/face shield and a dust mask should be worn at all mes.
• Grasp the work piece rmly and properly support it on the universal support or grinding jig during operaon. Maintain
even pressure and control of the work piece when grinding.
• Concentrate on the task at hand. STOP grinding if other people are distracng you or your mind is on something else.
Posioning the Universal Support
• The wet sharpener is equipped with a universal support that serves as a tool rest and as an aachment point for the
sharpener jig. It can be aached in two posions, allowing for grinding with or against the rotaon direcon of the
grinding wheel.
• The ghtening knobs on each aachment point allow the universal support to be adjusted and locked in posion,
depending on the specic task required.
• Working against the rotaon removes large amounts of material quickly but doe not yield precise results. Use this
method for coarse tools such as axes.
• Working with the rotaon yields much more precise results and removes less material. Use this method for ner tools,
such as knives or carving tools.
Grinding Against Wheel Rotaon
The sharpener addionally has been ouied with an electrical power switch that
permits the grinding wheel to rotate in the front and reverse direcons.
• DISCONNECT SHARPENER FROM POWER!
• Posion the machine with the ON/OFF switch facing you.
• Aach the universal support in the vercal mounts, as shown in Figure 4.
Be sure it is securely posioned and will not move during grinding.
• Rest your work piece on the universal support with the sharpened edge
poinng away from you. Grind your work piece in the indicated grinding
area.
Grinding with Wheel Rotaon
• DISCONNECT SHARPENER FROM POWER!
• Posion the machine with ON/OFF switch facing away from you.
• Aach the universal support in the horizontal mounts as shown in Figure
5. Be sure it is securely posioned and will not move during grinding.
• Rest your work piece on the universal support with the sharpened edge
poinng away from you. Grind your work piece in the indicated grinding
area.
Figure 4
Figure 5

MEFE—Mitchell Engineering Food Equipment Pty Ltd
23 Storie Street Clontarf QLD 4019 Australia
www.mefe.com.au | [email protected]
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Grinding Jig
The grinding jig provided with the wet sharpener is used for securing a variety of
tools, and can be posioned to grind with and against the wheel rotaon.
To mount the grinding jig:
• DISCONNECT SHARPENER FROM POWER!
• Slide the grinding jig onto the universal support, as illustrated in Figure 6.
• Insert the tool into the jig clamp, then use the angle guide, as described in
the manual, to set the grinding angle.
• Once the grinding angle is set, ghten both lock knobs to secure the tool
in place.
Water Reservoir
The wet sharpener is designed for wet grinding and should never be used without
water. Before lling the water reservoir, idenfy the high and low reservoir
mounng slots, as shown in Figure 7. These slots allow the reservoir to be raised
during grinding and lowered when not in use.
The mounng tabs on the reservoir serve as hooks to aach to the reservoir
mounng slots.
To ll and posion the Water Reservoir
• Remove the reservoir and ll it with water to just below the V-shaped notch.
• Aach the reservoir to the sharpener.
• - if the sharpener is going to be used immediately, posion the reservoir in
the upper grinding posion by aaching it in the upper slot (see Figure 8).
• -If the sharpener is not going to be used immediately, posion the reservoir in
the lower storage posion by aaching it in the lower slot (see gure 8)
Note: Placing the reservoir in the lower storage posion will reduce the likelihood damage to the
wheel and potenal hazards from being stored in water.
Cauon: Always ensure to switch “OFF” when the sharpener is not in use. In the event of a power
failure, blown fuse, or tripped circuit breaker, turn the switch “OFF” prevenng accidental start-up
when the power comes back on.
Tips for using the sharpener water reservoir
• Check the water level before every use and be sure the wheel is wet before you begin grinding. DO NOT use the
sharpener without water.
• Leaving the grinding wheel stored in water will cause damage to the wheel and create potenal hazards because the
wheel will become unbalanced. Once any grinding process is complete, return the reservoir to the storage posion to
prevent prolonged water exposure to the wheel.
• Empty, rinse and rell reservoir regularly. This prevents metal and stone from accumulang in the reservoir.
• Place a magnet in the reservoir to catch and collect metal lings. This will help prevent excessive metal accumulaon
on the grinding wheel.
Figure 6
Figure 7
Figure 8

MEFE—Mitchell Engineering Food Equipment Pty Ltd
23 Storie Street Clontarf QLD 4019 Australia
www.mefe.com.au | [email protected]
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Angle Guide
The sharpener comes with an angle guide to help idenfy and maintain the cung angle on a variety of tools.
To use the angle guide:
To mount the grinding jig:
• Locate the eight measuring notches on the angle nder.
• Find the angle notch that best ts the tool you wish to grind by
placing the sharpened edge of the work piece into the notch.
• Adjust the posioning of the tool and the universal support height
as necessary so that the sharpened edge of the tool is at against
both the grinding wheel and the angle edge on the angle guide.
Wheel Dressing
Depending on the type of grinding you do, the grinding wheel may require periodic dressing.
A variety of dressing tools are available (not included) and can be used to restore the abrasive quality of the wheel surface and
bring the wheel edge back to the right form. Refer to the instrucons that accompany your dressing accessory for complete
details on how to properly dress a wheel.
When grinding, metal objects become heated quickly. It is important to keep moving the object back and forth across the face
of the grinding wheel and to cool the object frequently using a coolant tray.
Sharpening
The leather stropping wheel on the sharpener and the included abrasive stropping paste can be used to obtain a razor sharp
edge on many tools. Before use, the stropping wheel must be properly prepared.
Note: A slight wobble of the stropping wheel when it is rotang is normal and does not aect the
performance.
To prepare the stropping wheel:
• Evenly apply a light machine oil to the leather wheel. Use
enough oil to provide a thorough coang, but not so much as to
saturate the leather and resulng in dripping.
• Apply a thin coat of abrasive honing paste to the leather wheel
using a wooden spreader or similar device (not included).
Distribute the paste evenly by hand turning the wheel while
spreading.
• Connect the machine to power, then turn the machine on and
connue to distribute the paste, sll using the wooden spreader.
Move the spreader lightly in a circular moon across the wheel.
• Once the paste is evenly distributed, begin sharpening.
• These preparaons will be sucient for sharpening ve to ten
tools. If you noce a drop in sharpening performance or have
sharpened more than ten tools, repeat above steps.
Figure 9
Figure 10