Paul from SWISCO responded:
July 31, 2017
I agree, they look to be the same. I don't think the balance is the problem. It sounds like something else in the window track is causing the problem. It could be anything, though. I recommend that you remove the bottom and top sashes and check the interlocks where they mesh. See if there is any obstruction, bent metal or even weatherstripping that has pulled out of place. Sometimes that causes the sashes to stick in place when they close. Also spray the tracks with silicone, that may help their operation.
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Paul from SWISCO responded:
August 4, 2017
It's very hard to know what size balance you need without going off of the original hardware. Could it be you are using one old and one new balance in the same sash? That could possibly be causing problems. Another cause of sticking might be the spring is too strong. Are you able to weigh one of the sashes to confirm that 2730 is accurate?
As for the top sash guide, see our 18-008. |
Paul from SWISCO responded:
August 9, 2017
Okay, I think things are starting to clear up. If your sash weighs 40 pounds then the 2140 option is the problem. If you look on the chart on the S380-22 store page, you can see these only carry 15 through 23 pounds. That is, at maximum, only have the strength needed to hold up your window.
I would double check the exact weight of the sash, just to be 100% sure. If yours is 40 pounds then you will need a special, custom made balance with an extra strength spring. Nothing we sell for this balance as a standard option will carry that kind of weight. In my last post, I mentioned the 18-008 as the top sash guide that appears to match yours. Top sash guides are based more on the window itself, not the balance. What I mean by that is, there are dozens of top sash guides that can potentially work with the S380-22. There is no one single corresponding part. That said I'm almost certain now that the problem is not with the top sash guide, but with the strength of the baalnces you ordered. |
Tom from SWISCO responded:
August 11, 2017
At this point, I would recommend looking at the store page for each balance. You will see a chart showing how much weight each option supports. All you need to do is cross reference that chart with your sash weight to confirm the best possible option.
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