ABB DCS800 Service Manual page 68

68
Attention: While loosen the mounting clamp the indicating spring must be pulled
out a little, otherwise the spring will be damaged!
Do not remove the nuts totally, otherwise the treaded rods will fall down!
6. Attach the disassembly tool at the faulty thyristor and prize open the upper and
lower heat sinks.
Use of disassembly tool
7. Remove the thyristors with e.g. a pair of pliers.
Attention: To centre the thyristors spring pins are used. The pins are inlayed into
all lower heat sinks. Open the gap wide enough that the thyristor and the pins are
not damaged while removing the thyristor!
Exchange of Thyristors for Size D7
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com
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3ADW000195R0501 DCS800 Service Manual e e