M7 QA-681 User manual

The diameter ΦA required for the inlet pipe is recommended on the specication table.
The diameter ΦB required for the branch pipe (from to ) should be 2 times as large as
ΦA. ΦB = 2 x ΦA
The diameter ΦC required for the primary air supply (from to ) should be 3 times as
large as ΦA. ΦC = 3 x ΦA
The length for the inlet pipe should be less than 15 feet (4.5m).
1.The maximum recommended air pressure during operation must not exceed
90 psi (6.3bar). Higher air pressure may create unsafe operating conditions for
the tool and the user.
2.The compressed air should be cooled and have a water lter installed at the
outlet end of the compressor. Even with a water lter installed, some water
may still condense in the piping or hose and will enter the tool mechanism
causing premature damage to the tool. Therefore, it is recommended to install
an air lter-lubricator device somewhere between the tool and the compressor.
3.Always use an air compressor of the proper capacity to operate each tool.
4.Clean the hose with a blast of compressed air before connecting the hose to
the air tool. This will prevent both moisture and dust inside the hose from
entering the tool and causing possible rust or malfunction.
1.Using these tools in any potentially explosive environment is strictly prohibited.
2.It is always recommended that these types of tools must be operated when
standing on a solid or rm location.
3.Always use these tools in a well ventilated area.
4.Slipping, stumbling and falling are the major causes of potential serious injury,
therefore, a clean and clutter free surface in the working area before operating
the tools is strongly recommended.
Read this manual carefully before installing, operating,
servicing or repairing.
Working environment:
Air supply and connection requirements:
Working environment:
Piping diameters and length requirement:
1. This tool should only be used as a hand operated tool. It is powered by compressed air and is
not insulated against electric shock.
2. This tool is specially designed for grinding sharp edges, burrs or surfaces on certain spots
or inner holes. Any application or use of this tool other than what it is designed for is strictly
prohibited.
3. High sound levels may cause hearing damage. Always wear hearing protection when operating
this tool.
4. Wearing eye/face protection can reduce the danger of high-speed materials being emitted from
the tool.
5. User must wear proper clothing. Loose clothing, long hair, stings, straps, belts and jewelry
should not be worn when operating this tool.
6. Working with certain materials can create dust and fumes, which may cause a potential
explosive environment and a hazard to the health. Therefore, wearing proper breathing
protection and taking preventive measures are recommended.
7. Always wear gloves to reduce the risk of cuts or burns.
8. Make sure that all the specications of the shank stone to be used are compatible with this
tool.
9. Do not use cutting wheels on this tool.
10. Inspect the shank stone carefully before use. Use of chipped, cracked or otherwise defective
implements will create an unsafe condition.
11. Make sure that the allowed operating speed of the grinding shank stone is higher than this
tool.
12. Make certain that the minimum gripping length on the stem of shank stone should be 10mm
observed.
13. Make sure that the shank stone is correctly mounted and tightened before use. Then, run the
tool at no-load for 30 seconds in a safe location to check the function and rotating direction.
Stop immediately if there’s considerable vibration or any other defects.
14. Ensure that the work piece is properly supported or xed before operating.
15. Ensure that there is no bystander in the vicinity of working area.
16. Make sure that the direction of the sparks generated from the grinding shank stone is properly
directed so as not to create a hazard.
17. Release the throttle lever to avoid danger if there is a failure of energy supply and when
connecting or disconnecting the air hose.
Warning:
18. To prevent an accidental start and cause a hazard, rest the idle grinder in a stable position.
19. Always turn off the air supply and disconnect the air hose before replacing grinding shank
stone or making adjustments on the tool.
20. Examine the shank stone thoroughly before re-use if this tool has been dropped.
21. Beware if the compressed air hose breaks unexpectedly, or is being connected or
disconnected improperly. This whipping action may cause injury.
22. Prolonged use will cause user fatigue. Periodic breaks are recommended for user safety.
23. It is recommended to stop operating the tool whenever the user experiences discomfort,
tingling or pain during use.
24. Make sure there is no gas or combustible material stored near the tool when servicing,
changing insert tools, or storage.
25. Avoid storing this tool where it is subject to high humidity.
1. Before connecting the air hose to this tool or after operating, apply 4 or 5 drops of pneumatic
oil into the air inlet and run it for several seconds, referring this operation to the attached
picture.
2. Maintain this tool regularly by performing the same oiling application every 3 to 4 hours of
operation.
3. Do not lubricate tools with ammable or volatile liquids. Use only the lubricant recommended
by Mighty-Seven or authorized dealers. Any other lubricant will lead to reduce performance
of the tool and permanent damage. Whenever any unauthorized lubricant is used by
accident, ush it immediately with recommended pneumatic oil.
4. Follow all the recycling laws of waste disposal once this tool is no longer usable.
Maintenance:
.
Original Language
Serial Number: Please refer to the tool
Air Die Grinders
Item No.: QA-681
6.3 bar (90. psi)
We declare under our own responsibility that the above machinery fulls all the
relevant provisions of (MD) Machinery Directive 2006/42/EC and its
amendment and is manufactured and tested according to the following
standards:
EN ISO 11148-9 / EN ISO 15744 / EN ISO 28927-12
Jonney Chen
Declared by: QA Manager
Declared in: Taichung, Taiwan
Dated:2018/01/01
Manufacturer:
Mighty Seven International Co., Ltd.
No. 70-25,Ching Qunag Rd., Wu-Jih Shiang,
Taichung Hsien, 41466 Taiwan
www.mighty-seven.com
Authorized contact, to compile the technical les :
King Tony France
3 Rue des imprimeurs ZI République Nord 1.
86000 POITIERS FRANCE
TEL：[phone]
E-MAIL：[e-mail]
Signature
CE DECLARATION OF CONFORMITY
Shank stone replacing:
Use the supplied spanners to replace.
Note: Turn counterclockwise to open
and replace.
Pneumatic oil
Air inlet
Regular maintenance

ltem No：QA-681
NO. PART NO. DESCRIPTION Q'TY
1 QA-681P01 Ball Bearing 1
2 QA-681P02 Spindle Gear 1
3 QA-681P03 Ball Bearing 1
4 QA-681P04 Angle Head Housing 1
5 QA-681P05 Housing Cap 1
6 QA-681P06 Pinion Gear 1
7QA-681P07 Washer 1
8QA-681P08 Ball Bearing 1
9QA-681P09 Fornt End Plate 1
10 QA-681P10 Spring Pin 1
11 QA-681P11 Cylinder 1
12 QA-681P12 Rotor Collar 1
13 QA-681P13 Rotor 1
14 QA-681P14 Rotor Blade 4
15 QA-681P15 Rear End Plate 1
16 QA-681P16 Rear End Ball Bearing 1
17 QA-681P17 motor Housing 1
18 QA-681P18 Screw 1
19 QA-681P19 0 Ring 1
20 QA-681P20 0 Ring 1
NO. PART NO. DESCRIPTION Q'TY
21 QA-681P21 Air Regulator 1
22 QA-681-22 Throttle Valve Spring 1
23 QA-681-23 Throttle Valve Bushing 1
24 QA-681-24 0 Ring 1
25 QA-681-25 Throttle Valve 1
26 QA-681-26 0 Ring 2
27 QA-681-27 Throttle Lever 1
28 QA-681-28 Throttle Lever Pin 1
29 QA-681-29 Exhaust Deector 1
30 QA-681-30 Bushing 0 Ring 1
31 QA-681-31 Air lnlet Bushing 1
32 QA-681-32 Steel Ball 2
33 QA-681-33 Clamp Nut 1
34 QA-681-34 Woodruff Key 1
35 QA-681-35 Spindle 1
36 QA-681-36 Collet 1
37 QA-681-37 Co llet Nut 1
38 QA-681-38 Spanner 1
39 QA-681-39 Block 1
40 QA-681-40 Lock 1
QA-681 6mm&3mm 20000 5 90 7-11/16"(195) 0.5 1.76(0.8) 3/8" 85 1.1
(1/4"&1/8")