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TROUBLESHOOTING & REPAIR | ||
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MAIN TRANSFORMER REMOVAL AND REPLACEMENT
(MACHINE CODES BELOW 10150)
(continued)
MAIN TRANSFORMER
SECONDARY LEADS
Figure F.21 Main Transformer Left Side
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6.Disconnect and clear the shunt sensing leads from the control board (plug J4).
7.Disconnect the thermostat leads from the thermostat mounted on the shunt assembly.
8.With the 3/4” wrench remove the shunt assembly from the negative output terminal. Take note of the by- pass connection on the negative ter- minal. Clear the shunt to allow access to the main transformer and lead connections. Cut any neces- sary cable ties.
9.With the 3/4” wrench remove the two secondary leads from the positive output terminal. Take note of the by- pass connection on the positive ter- minal.
10.Locate and cut the necessary wire ties and slide the sleeving from the four transformer secondary and reactor lead splices.
11.With slot head screwdriver and 3/8”
12.Using the 7/16” wrench remove the secondary leads from the output rectifier leads.
Label the leads and note washer and lead placement for reassembly.
13.With 3/8” wrench remove the two screws mounting the transformer assembly to the base of the machine. See Figure F.22. Note: The machine will have to be tilted on its side to gain access to the bottom of the unit.