Lincoln Electric IDEALARC CV-300 - Manual (Page 81)

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PROCEDURE FOR CLAMPING
1/4-28 BOLTS.
Note: This procedure can only be used
with 1/4-28 bolts.
Do not use bolts with any other type
thread or new SCR will be damaged.
Do not over tighten cap screws. The
leaf spring will apply the required clamp-
ing force to the SCR.
1. Do not turn the nuts. While holding
nuts stationary, turn the cap screws
only with the following procedure.
2. Tighten first cap screw 1/4 turn.
3. Tighten second cap screw 1/2 turn.
4. Tighten first cap screw 1/2 turn.
5. Tighten second cap screw 1/2 turn.
6. Tighten first cap screw 1/2 turn.
7. Tighten second cap screw 1/4 turn.
8. Assembly now has the proper
clamping force.
9. Perform Active SCR Test.
CLAMPING PROCEDURE FOR
1/4-20 BOLTS.
Note: This procedure can only be used
with 1/4-20 bolts.
Do not use bolts with any other type
thread or new SCR will be damaged.
Do not over tighten cap screws. The
leaf spring will apply the required clamp-
ing force to the SCR.
1. Do not turn the nuts. While holding
the nuts stationary, turn the cap
screws only with the following pro-
cedures.
2. Tighten first cap screw 1/4 turn.
3 Tighten second cap screw 1/2 turn.
4. Tighten the first cap screw 1/2 turn.
5. Tighten the second cap screw 1/4
turn.
6. Tighten the first cap screw 1/8 turn.
7. Tighten the second cap screw 1/8
turn.
8. Assembly now has the proper
clamping force.
9. Perform the Active SCR Test.
F-42 TROUBLESHOOTING & REPAIR F-42
IDEALARC CV-300
SCR REMOVAL AND REPLACEMENT (CONTINUED)