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F-74

TROUBLESHOOTING & REPAIR

F-74

 

 

MAIN TRANSFORMER REMOVAL AND REPLACEMENT

(MACHINE CODES ABOVE 10150)

(continued)

MAIN TRANSFORMER

LOCKING MOUNTING TABS

MAIN TRANSFORMER

MOUNTING SCREWS

Figure F.25 Main Transformer Mountings

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14.Using the slot head screwdriver unclip the locking tabs and slide the transformer towards the front of the machine until it is free of the slots in the bottom of the machine. Note: The machine will have to be tilted on its side to gain access to the bottom of the unit.

15.With the main transformer loose from the base carefully tilt and remove the transformer from the left side of the machine.

16.Install the new transformer by tilting and carefully positioning it in place in the slots in the case bottom. Slide towards the rear of the machine until the locking tabs are in place.

17.With the 3/8” wrench replace the two transformer mounting screws. Note: The machine will have to be tilted on its side to gain access to the bottom of the unit.

18.Using the 7/16” wrench reassemble the four secondary leads to the out- put rectifier module. Note lead and washer placement and lead labels. Tighten to between 30 and 40 IN- LBS.

Do not stress the module terminals when making these connections.

19.Using the slot head screwdriver and 3/8” nut-driver reassemble the two reactor leads to the output rec- tifier leads. Note lead labels.

20.Replace the sleeving on the reactor connections and replace the cable ties.

INVERTEC V250-S

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Image 106
Lincoln Electric V250-S service manual Figure F.25 Main Transformer Mountings