Any input on Cutler-Hammer Starter?

td456

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Two  cutler –hammer advantage  starters are  doing the same thing:
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.
* H6 d8 |& g! r) b+ [7 vIt is a cycle.
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We isolate the network control and use the local start and stop only, the problem remains.
9 O+ f" E. s/ M, J/ p% I4 VSwap one of the defective buckets with a good one, the new bucket works fine.
The problem should be inside the bucket.

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.
4 `& A  K3 g* }' {- p7 ?4 |% hConfirm 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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1 u) J, Y! K/ r/ U7 T9 m5 u1 NThe next thing we can think of  is the coil, we took the coil out to have a close look.
6 Q; S2 Q" B1 o! H4 W9 HThey  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.

+ Q, q% f( W" i6 S% a/ U: ~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

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+ M, f' b: X/ w: M# g1 l9 ]6 X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.
Since 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
也想到这一点，不过这是新装的设备。
/ m' w' t1 M) Y4 e' w6 {: E检查过触点没问题。