Kemppi FitWeld 300 Service Manual Download Page 4

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Construction

Z002

Z001

P001

A001

Gas valve

Wire feeder

motor

Cooling

fans

Gas pressure

switch

Gas flow

adjustment

Tip

If machines cover plate screws thread fails you could
change PT screws diameter to 5,5mm - 6mm.

Note!

Protective earth conductivity test must be performed at
earth points on both the front and back plates

Summary of Contents for FitWeld 300

Page 1: ...1 Service manual Fitweld 300 Version 1 2...

Page 2: ...6 x 339 mm 200mm Spool max 0 85 MIG Efficiency at max current 0 95 MIG Power ratio at max Current 43 V Open circuit voltage 20 A 11 V 300 A 32 V MIG Welding range 300 A 29 V 220 A 25 V 180 A 23 V 140...

Page 3: ...ON signal lamp 4 Overheat protection lamp 5 No gas warning lamp 6 Euro connector Front Plate 1 5 9 7 8 Back Plate 7 Gas connector 8 Main switch 9 Ground cable connector 12 10 11 13 Spool room 10 2T no...

Page 4: ...or Cooling fans Gas pressure switch Gas flow adjustment Tip If machines cover plate screws thread fails you could change PT screws diameter to 5 5mm 6mm Note Protective earth conductivity test must be...

Page 5: ...5 Main circuit diagram...

Page 6: ...ate transformers and gate drivers Auxiliary voltage 15VDC Over voltage sensing from DC link Two stage fan start PTC protection alerts signals comes from the main transformer and the secondary choke Fu...

Page 7: ...ode test 1 Red test probe L1 L2 and L3 one at the time Black test probe DC link plus Value 0 3 0 5 VDC diodes ok 2 Red test probe DC link plus Black test probe L1 L2 and L3 one at the time Value No va...

Page 8: ...probe to common point black test probe Values 0 3 0 5 VDC 2 Measure diode branches one at the time from common point red test probe to transformer black test probe Value No value Damping circuit resis...

Page 9: ...n 3m min If wire feed speed is offset adjust trimmer and repeat steps 2 4 Functions Wire motor power feeding from machine s secondary circuit by MOSFET half bridge Wire feed speed maximum adjustment b...

Page 10: ...al throughput for optional usage Three leds On Overheat protection and No gas Gas pressure switch S002 Functions Prevent welding while gas pressure under adjusted level Adjusted to 1 bar as a default...

Page 11: ...ules base plate The module is immediately attached to the heat sink in order to avoid any dirt to get between the components At first all M5 screws are tightened carefully to torque of 0 5 2 Nm after...

Page 12: ...12 Notes...