SAF OPAL Pro MS6 - Manual (Page 29)

MS6 REDUCED VOLTAGE STARTER
Page 28
9 SPARES
9.1 SPARE PARTS
Model SCR Current
Transformer
Control
Card
Stack ID
Card
MOV
MS6-30 N10SP03(61A SCR) T261123 (1500:1) CA530 CA532(30) O210050
MS6-50 N10SP06(90A SCR) T261123 (1500:1) CA530 CA532(50) O210050
MS6-80 N10SP16(140A SCR) T262320 (2500:1) CA530 CA532(80) O210050
MS6-125 N728352(300A SCR) T262320 (2500:1) CA530 CA532(125) O210050
MS6-250 N728452(580A SCR) T262320 (2500:1) CA530 CA532(250) O210050
MS6-420 N718602(720A SCR) T265320 (5000:1) CA530 CA532(420) O210050
MS6-500 N718133(1100A SCR) T268320 (8500:1) CA530 CA532(500) O210050
MS6-600 N718153(1200A SCR) T268320 (8500:1) CA530 CA532(600) O210050
MS6-800 N718552(1500A SCR) T261321 (10000:1) CA530 CA532(800) O210050
9.2 SCR INSTALLATION PROCEDURE
• Clean both heat sink and SCR surfaces.
• Apply a thin layer of joint compound (Noalox) to both SCR surfaces.
• Observe correct SCR polarity.
• Install SCR so that roll pins engage dimples on both sides of the SCR.
• Tighten clamp bolts evenly until finger-tight.
• Tighten each bolt according to table below (based on number of spring bars and size of
bars).
Note: SMALL clamps are 10.5cm(4.25inches) and LARGE clamps are 12.5cm(5inches)
CLAMP SIZE SPRING BARS BOLT TURNS PAST
FINGER TIGHT
SMALL 1 0.75
SMALL 2 1
LARGE 3 1.75
LARGE 4 1.75