31 3 Channel Balancer in Photos

Handy Person from San Jose, CA
Hello,
The nylon wire has popped in a couple of my balancers, so I would like to replace them; however, I don't know the part number of either the wire (assuming it's field-replaceable) or the whole balancer assembly. I also need the clip in the window channel that can be seen in image 6024 attached (maybe it comes with the balancer assembly?). Finally, I'm confused about the marking seen in image 6020. The "31" would indicate to me the length of the balancer, but as you can see in image 6019, its length is 32 inches.

Thanks in advance for your assistance.
5 user uploaded images
7 Replies
Handy Person from San Jose, CA
Sorry, just figured out that the clip in image 6024 is actually part of the balancer that installs in the slot in the window channel. Also learned that the marking of 31 indicates a length of 32 inches...strange, but true.
Casey
Casey from SWISCO
SWISCO
Expert

Hello,

Unfortunately, the cord cannot be replaced and it should not be attempted since the balance is under considerable tension, which can lead to injury or further damage. With this combination of attachments, you could have either an S380-32 or S385-32 channel balance. You’ll need to measure as shown below. The Series 380 has a 1" bottom attachment, and the Series 385 has a 1-3/32" attachment. 

As you've already deduced, you'll also need 3130 spring strength options for your 32" replacement balances. Thank you and let us know if you have any other questions or concerns.

Comparison of the S378, S380 and S385 balance shoes.
Comparison of the S378, S380 and S385 balance shoes.
Handy Person from San Jose, CA
Hi Casey, thanks so much for your detailed response! I measured the bottom attachment, and it comes out to 1" if I measure from the inside of the wing and 1 1/16" if I measure from the outside of the wing. So, my best guess is that I need the S380-32 part. Do you agree?

Though I want to be exact, my guess is that it's better to err with a smaller attachment than a larger one, but I could be wrong.

Thanks!

Casey
Casey from SWISCO
SWISCO
Expert

The shoe wing does need to be included in your measurement since the entire shoe needs to fit inside the window channel. If your shoe is measuring more than 1", you'll most likely need the S385 since the shoe can wear down a bit over time with normal use. If you want to be sure, you can remove another balance to confirm the shoe measurement. 

Handy Person from San Jose, CA
Hi Casey, just wanted to follow up that I ordered and successfully installed four balances, thanks to your great support! I think it was your website that recommended not to replace just one balance, but both on the same window, which was a great suggestion because the nylon cord (wire?) in the two functioning balances was already starting to fray.

I'll definitely be using Swisco for all of my future purchases!

Regards,
Jerry
Casey
Casey from SWISCO
SWISCO
Expert

Hi Jerry! 

I'm happy to hear that your repair went without a hitch. Please let us know if you need anything else. 

Reply to Thread
Current Photos:
Related Products
Related Videos
Related Guides