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Hand Extruder MEK-40,65 / MAK-40,65 

 

Page 16/20 

Issue 08.2008/Rev. 01 

MUNSCH Kunststoff-Schweißtechnik GmbH 

 

                                                                                     
                   

7  Malfunctions, Causes and Remedies 

7.1  Trouble-shooting 
The following table lists potential operating upsets of 
the hand extruder, possible causes and their reme-
dies (fault diagnosis chart).   

 

Should malfunctions occur which are not covered 
here or which cannot be traced back to the cause 
stated, please contact MUNSCH Kunststoff-
Schweißtechnik GmbH. 

 
 

Malfunction  

 

Fault No.  

Drive motor does not start 

 

5, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19, 21, 23, 25 

Drive motor switches off 

 

5, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19, 21, 23, 25 

No welding rod feed 

 

1, 16, 17, 20 

No extrudate conveyed out of welding shoe 

 

1, 16 

Extrudate output decreases during operation  

 

1, 14, 16 

No air supply 

 

6, 7, 13 

Integrated air supply without function 

 

5, 22 

No hot air 

 

2, 3, 4, 5, 6, 18, 22 

Hot air temperature below setpoint temperature   

 

2, 3, 4, 8, 10, 18, 22, 14 

Melt temperature below setpoint temperature  

 

2, 3, 9, 11, 14 

Extruder does not heat up  

 

2, 3, 12, 22 

Temperature above preset range 

 

2, 3, 18, 19 

Controller fault signal: E 

 

Controller fault signal: OEAIR 

 

2, 13, 22 

Controller signal: OFF 

 

9, 10, 11, 12 

Control fluctuates 

 

3, 13,19,12 

 
 
7.2  Fault diagnosis 

Fault 

No.  

Possible causes 

Remedies 

Smaller or too small a welding rod diameter  

Use larger welding rod diameter, if necessary  

Temperature sensor defective  

1)

  

Temperature controller defective  

1)

 

Air rate too high  

Reduce air rate to specified level

3)

 

Cable connections defective  

Check cable connections

1)

  

External air supply not connected

3)

  

Connect external air supply 

External air supply without function

3)

  

Switch on external air supply 

 

Check the external air supply system for malfunc-
tions using the separate manual, or have it checked.  

Hot air temperature below start interlock tem-
perature  

Allow hand extruder to heat up 
Air rate too high 

 reduce air rate 

3)

  

 

1)  Consult MUNSCH Kunststoff-Schweißtechnik GmbH 
2)  Only for MAK 
3)  Only for MEK 

Содержание MAK-40

Страница 1: ...o ______________ MEK 65 MAK 65 Article No ______________ These operating instructions contain important information to be observed for hand extruder operation and maintenance It is therefore imperativ...

Страница 2: ...UNTING 7 2 7 UNAUTHORIZED MODIFICATIONS AND SPARE PARTS 7 3 TRANSPORT AND STORAGE 8 3 1 TRANSPORT 8 3 2 STORAGE 8 3 3 RETURN TO MUNSCH 8 4 PRODUCT DESCRIPTION 8 4 1 APPLICATION RANGE 8 4 2 GENERAL 8 5...

Страница 3: ...EU Machinery Directive 98 37 EC EU EMC Directive 89 336 EC EN 61029 1 VDE 0740 Part 500 DIN EN 55014 1 VDE 0701 Part 1 DIN EN 55014 2 VDE 0702 Part 1 DIN EN ISO 12100 1 EU Low Voltage Directive 73 23...

Страница 4: ...r failure to observe the safety instructions may lead to the forfeiture of any damages Non observance of the safety instructions may in particular involve the following risks failure of important hand...

Страница 5: ...not less than 230 V 1 must be available at the connector of the hand extruder When using an extension cable make sure to observe the minimum conductor cross section Use extension cables with protecti...

Страница 6: ...ir supply risk of hand extruder dam age When using an external air source make sure that the air supply line is adequately dimen sioned CAUTION The supply air must be clean dry and free from oil and w...

Страница 7: ...tion and mounting activities are per formed by authorized and qualified personnel who are thoroughly familiar with the operating instruc tions As a rule the hand extruder must be shut off and the conn...

Страница 8: ...er in a dry and frost free place Protect the hand extruder from unauthorized ac cess Special preservation is not required 3 3 Return to Munsch Should it become necessary to return the hand ex truder t...

Страница 9: ...ted The temperature controlled start interlock prevents the drive from starting if there is still unmolten mate rial in the extruder thus precluding damage to the unit The output rate is variable so t...

Страница 10: ...ossible For larger weld seam widths a wider preheat nozzle is available as an accessory 5 3 Starting the hand extruder Observe section Safety CAUTION Never operate the hand extruder with out air suppl...

Страница 11: ...t be clean and dry 5 4 1 Introducing the welding rod CAUTION The hand extruder is provided with a bore for introducing the welding rod 5 4 2 Replacement and aging of welding rod If the welding rod is...

Страница 12: ...once to switch off the heat ing circuits Pull mains connector Maintain the air supply of the hand ex truder until the unit has completely cooled down Never use water or another coolant to accelerate t...

Страница 13: ...MEK 40 65 MAK 40 65 Issue 08 2008 Rev 01 Page 13 20...

Страница 14: ...e and proper working practices must be observed Any working practices posing a safety risk are pro hibited Activities other than those described in this section may only be performed at the Manufactur...

Страница 15: ...MEK 40 65 MAK 40 65 Issue 08 2008 Rev 01 Page 15 20...

Страница 16: ...temperature 2 3 4 8 10 18 22 14 Melt temperature below setpoint temperature 2 3 9 11 14 Extruder does not heat up 2 3 12 22 Temperature above preset range 2 3 18 19 Controller fault signal E 2 Contro...

Страница 17: ...ltage Rated voltage permissible voltage Check mains voltage 1 15 Extension cable heats up Unroll cable reel Check cable cross section see also section Sa fety 16 Extruder nozzle plugged with foreign m...

Страница 18: ...ilm sheeting welds Weight 40 7 9 kg 65 8 9 kg 40 8 kg 65 9 4 kg Drive 230 V AC with speed control external Powerbox 230 V AC with speed control external Powerbox Extruder heating system 40 650 W 65 80...

Страница 19: ...be free from defects in materials and workmanship from the date of its first acquisition Should deficiencies resulting from defects in materials or work manship be identified during the warranty peri...

Страница 20: ...t the Purchaser may demand annulment cancella tion of the contract or a price reduction reduc tion of compensation in lieu of remedial work In such a case the Purchaser shall not be entitled to any re...

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