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TROUBLESHOOTING & REPAIR
F-55 F-55
IDEALARC DC-655
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FIGURE F.21 – OUTPUT CHOKE/MAIN TRANSFORMER ASSEMBLY DETAILS
CHOKE THERMOSTAT
(LEADS #273 AND 41A)
CHOKE / FRAME
MOUNTING
BOLTS (4)
ROPE SLING
TOP LEAD (#222A)
CENTER TAP
(LOW INDUCTANCE
OUTPUT LEAD)
BOTTOM CHOKE
LEAD (HIGH
INDUCTANCE
OUTPUT LEAD)
IRON/COIL
MOUNTING
BOLTS (4)
TRANSFORMER
SECONDARY
LEADS (6)
MAIN TRANSFORMER AND CHOKE REMOVAL
AND REPLACEMENT PROCEDURE (continued)
PROCEDURE
1. Remove the input power to the DC-655
machine.
2. Remove the case top and sides.
OUTPUT CHOKE REMOVAL
3. Label and remove leads #273 and 41A from
the choke thermostat.
4. Using the 9/16” wrench, remove the flexible
transformer secondary lead and the #222A
lead from the top lead of the output choke.
See Figure F.21.
5. Using the 9/16” wrench, remove the low
inductance output lead from the center tap
of the choke. See Figure F.21.
6. Using the 9/16” wrench, remove the high
inductance output lead from the bottom
choke lead. See Figure F.21.
7. Support the choke with a crane or hoist.
8. Using the 9/16” wrench, remove the four
bolts, washers and nuts mounting the choke
assembly to the transformer frame assem-
bly.
9. Carefully lift the choke from the DC-655
machine.