Lincoln Electric IDEALARC DC-600 Service Manual page 108

F-64
TRANSFORMER REMOVAL FROM LIFT BAIL ASSEMBLY PROCEDURE
E IRON
1. Label and cut leads to the coil(s) being
removed. See Figure F.23.
NOTE: To remove a main transformer coil, it is
necessary to remove the secondary coil
first.
2. Remove the secondary coil by breaking the
seal caused by the epoxy paint and lifting the
coil up away from the main transformer coil.
a. If the secondary coil is not being replaced,
do not cut the lead to the secondary coil.
With the lead attached, lift the coil off the
main transformer coil and bend the coil
and lead to the side.
3. Remove the main transformer coil.
a. Take out the insulated wedges that help
keep the coil firmly seated on the iron E. If
these do not dislodge easily, it will be nec-
essary to force the coil off the iron E.
TROUBLESHOOTING AND REPAIR
(continued)
Figure F.23 Transformer Coil Removal
SECONDARY
TRANSFORMER COILS
IDEALARC
PRIMARY TRANSFORMER COILS
4. Replace the coil(s).
a. Be sure to replace all insulated wedges.
b. Using a high temperature industrial epoxy,
such as Lincoln E-1603, "glue the primary
coils in place" by applying the epoxy to the
coil side and cell insulation opposite the
wedges. Using a high temperature indus-
trial epoxy, Such as Lincoln E-1603, "glue
the secondary coils in place" from the iron
to the coil sides.
5. Test for correct operation before replacing the
transformer assembly back into the machine.
a. The primary coils should be ground tested
at 2700VAC for 1 second. The secondary
coils should be ground tested at 1500VAC
for 1 second. The primary to secondary
insulation should be tested at 2700VAC for
1 second.
® DC-600
F-64
INSULATION
WEDGES
THROUGH
BOLT