User manual

8.7.4 SCR Clamp
Below is an exploded view of a typical SCR clamp. Refer to the Clamp Parts List below for names of the parts being used.
SCR CLAMP PARTS
8.7.5 Tightening Clamp
Finger tighten the clamp. Ensure both bolts are tightened an equal amount so that the loader bar (item 1) is square in the heatsink.
Tighten the bolts equally in 1/8 turn increments until the indicator washer(s) (item 6), which are under the nut(s) in the center of the
loader bar, becomes loose indicating the clamp is tight. On the loader bars with two indicator washers, it may be necessary to tighten or
loosen one side of the clamp to get both indicator washers free.
8.7.6 Testing SCR
After the SCRs have been replaced, conduct the resistance test as defined in section 8.5.
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8 - TROUBLESHOOTING & MAINTENANCE
Item # Quantity Description
1 1 Loader Bar
2 2 Insulator cup
3 2 Bolt
4 2 Washer
5 2
Serrated nut (larger style clamp has 1
support bar)
6 1 or 2
Indicator Washer – Quantity dependant
on style of clamp