Dongcheng DSJ03-25 Operation Instructions Manual Download Page 4

9.  Always be sure you have a firm footing. Be sure no one is below when using 

the tool in high locations. 

10. Do not use water or grinding lubricant. 

11. Do not use this tool as cutter. 

12. Do  not  touch  the  workpiece  immediately  after  operation,  it  may  be  extremely 

hot and could burn your skin. 

13. ALWAYS wear proper apparel including long sleeve shirts, leather gloves and 

shop aprons to protect skin from contact with hot grindings. 

14. Use of this tool to grind or sand some products, paints and wood could expose 

user  to  dust  containing  hazardous  substances.  Use  appropriate  respiratory 

protection. 

SAVE THESE INSTRUCTIONS. 

WARNING! 

MISUSE  or  failure  to  follow  the  safety  rules  stated  in  this 

instruction manual may cause serious personal injury. 

 

 

INSTRUCTIONS FOR OPERATION 

Installing or Removing the Wheel Point 

CAUTION: 

Always  be  sure  that  the  tool  is  switched  off  and  unplugged  before  installing  or 

removing the wheel point. 

 

Loosen  the  collet  nut  and  insert  the 

wheel point into the collet nut. Use the 

smaller wrench to hold the spindle and 

use the larger one to tighten the collet 

nut securely. (

Fig. 1

 

 

The  wheel  point  should  not  be  mounted 

more  than  10  mm  from  the  collet  nut. 

Exceeding  this  distance  could  cause 

vibration or a broken shaft. (

Fig. 2

 

To  remove  the  wheel  point,  follow  the 

installation procedures in reverse. 

 

 

 

Switch Operation 

To start the tool, push the switch lever to the 

“ON” position. To stop, push the switch lever 

to the “OFF” position. (

Fig. 3

 

 

 

 

Operation 

Turn  the  tool  on  without  the  wheel  point 

making any contact with the workpiece and 

wait until the wheel point attains full speed. 

Then apply the wheel point to the workpiece 

gently. To obtain a good finish, hold the tool 

with  two  hands  and  move  the  tool  in  the 

leftward direction slowly. (

Fig. 4

CAUTION: 

Apply  light  pressure  on  the  tool.  Excessive 

pressure on the tool will only cause a poor finish and overloading of the motor. 

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Summary of Contents for DSJ03-25

Page 1: ...Edition 4 Aug 2014 Read through carefully and understand these instructions before use ...

Page 2: ...unavoidable use a residual current device RCD protected supply Use of an RCD reduces the risk of electric shock NOTE The term residual current device RCD may be replaced by the term ground fault circuit interrupter GFCI or earth leakage circuit breaker ELCB Personal Safety 10 Stay alert watch what you are doing and use common sense when operating a power tool Do not use a power tool while you are ...

Page 3: ...fore connecting the machine to a power source receptacle outlet etc be sure the voltage supplied is the same as that specified on the nameplate of the machine A power source with voltage greater than that specified for the machine can result in SERIOUS INJURY to the user as well as damage to the machine If in doubt DO NOT PLUG IN THE MACHINE Using a power source with voltage less than nameplate ra...

Page 4: ...l is switched off and unplugged before installing or removing the wheel point Loosen the collet nut and insert the wheel point into the collet nut Use the smaller wrench to hold the spindle and use the larger one to tighten the collet nut securely Fig 1 The wheel point should not be mounted more than 10 mm from the collet nut Exceeding this distance could cause vibration or a broken shaft Fig 2 To...

Page 5: ... power tool Exercise due care to ensure the winding does not become damaged and or wet with oil or water 3 Cleaning the Motor Vents Keep the motor vents clean Clean the vents regularly or when dusts accumulated on them Fig 6 4 Inspecting and replacing the carbon brushes Remove and check the carbon brushes regularly Replace when they wear down to the limit mark Fig 7 Keep the carbon brushes clean a...

Page 6: ...Switch 12 Ball Bearing 6200ZZ C4 36 Pan Head Tapping Screw ST4 22 13 Wave Spring Washer 25 37 Rear Cover B 14 Circlip for Hole 30 39 Cord 15 Coupling 40 Pan Head Tapping Screw ST4 2 16 with Flat Washer 16 Pan Head Screw M4 10 41 Strain Relief 17 Bearing Retainer 42 Cord Guard 18 Ball Bearing 608ZZ 43 Terminal Block 19 Inner Cover 44 O Ring 5 6 1 5 20 Armature Assembly 45 Wire 105 21 Insulation Was...

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