Lincoln Electric POWER WAVE C300 Service Manual page 99

F-80
REMOVAL AND REPLACEMENT PROCEDURE (continued)
PROCEDURE
1. Disconnect the input power to the POWER
WAVE® C300 machine.
2. To gain access to the Current Transducer see
the Case Cover Removal and DC Link
Capacitor Discharge Procedure.
3. Locate the Current Transducer Module on the
left side of the machine. See Figure F.29.
4. Locate and carefully unplug the four pin molex
type plug from the Current Transducer. It is
located on the underneath side of the module.
5. Using the flat head screwdriver and the 11/32
inch wrench remove the two machine screws,
flat washers, lock washers and nuts mounting
the Current Transducer Module to the output
choke bracket.
6. Using the 7/16 inch wrench remove the nega-
tive output flex cable from the output choke
aluminum strap.
TROUBLESHOOTING AND REPAIR
CURRENT TRANSDUCER (LEM)
FIGURE F.29 – CURRENT TRANSDUCER LOCATION
C URRE NT TRANSDUC E R
POWER WAVE® C300
O UT PUT C HO KE
O N/O F F SW ITC H
INPUT C HO K E
7. Take note of the arrow direction on Current
Transducer Module. The new Module must be
installed with the arrow pointing in the same
direction.
8. Carefully remove the Current Transducer
Module from the aluminum strap. This may
require some gentle twisting.
9. Carefully place the new Current Transducer
Module into the proper position taking note of
the arrow direction discussed in Step 7.
10. Mount the new Current Transducer Module to
the output choke bracket using the machine
screws, washers and nuts previously remove.
11. Attach the negative output flex cable to the out-
put choke aluminum strap.
12. Replace the four pin molex type plug into the
new Current Transducer Module.
13. Replace the left case side.
Cover Removal and DC Link Capacitor
Discharge Procedure.
F-80
See the Case