Any input on Cutler-Hammer Starter?

td456

) H4 p. u4 V. W; m! ~5 STwo  cutler –hammer advantage  starters are  doing the same thing:
0 M7 A% m- L( v4 C( p4 }% | After start 2-3 times, they will quit working, if you toggle the  start and stop buttons on DCS screen  , you will get another 2-3 running before they quit working again.
It is a cycle.
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We isolate the network control and use the local start and stop only, the problem remains.
Swap one of the defective buckets with a good one, the new bucket works fine.
4 D4 s/ Z9 h+ k- W3 t2 ^, [+ Z# `The problem should be inside the bucket.
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When the problem happened, we observed that  the contactor has a pulling action but will not seal.
Use a terminating screw divers to push in the contactor, it will not seal either.
$ c2 O/ {5 \/ ~. }. O3 GConfirm with TECH support this should be a problem with the control circuit board inside the advantage starter, we  bought two new control circuit boards and replaced the old ones, the problem is still the same.
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% ]& u4 }- I( e- R. q, m" pThe next thing we can think of  is the coil, we took the coil out to have a close look.
3 T3 Z1 A0 X' I- C  E# Y7 H& YThey  have a fork to pinch inside the two leads to make connection, it is not a good design at all. We soldered  the connection and tried again.
It is getting better  this time, we have 7-8 times of running before it quit working.
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The coil should be the problem, we ordered two of them. But it will take 5-6 weeks for us to get them.
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Do you guys have any input on this issue?

侠客行

有时候主接触点太脏，也会造成启动器无法正常工作

贾电工

/ F# Z, s) Y2 ?! Y' g中国人在这里最好说中国话！说英语或想学英语请人到洋人论坛！

homestay

Don't know cutler –hammer advantage  starters very well, but had been worked on AB switch gears for a little while, which has two different coils, one to pull the vacum bottles up which employs larger current, another one uses less current to hold the connection---if the second coil fails, it won't be able to seal the connection.
' O+ |5 M3 B/ oSince your cutler -hammer works couple times,  I guess 侠客行 is right, or the sealing connection is just worn out.

td456

2# 侠客行
% S# O4 V9 I' P0 T' ^也想到这一点，不过这是新装的设备。
检查过触点没问题。