Series 600 spiral balance, are they pre-charged?

A contractor from Chicago says:
August 30, 2010
I have recently placed an order. I am wondering at the time of installation will I need to charge these balances or are they pre-charged? If I need to charge them is there a recommended charge per balance.
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
August 30, 2010
You will have to charge the balances, I usually give the spiral three to four turns to start. I then take precaution by trying the window sash to see if it will operate properly. Then I adjust it accordingly, adding more turns as needed.
Reply to Thread
Use this form to ask a follow-up question or to share your experience regarding this subject.
(your email address will be kept private and is only used to inform you when a response has been made)
Current wait time is 4-7 business days
We promise that one of our experts will personally get back to you as soon as they are able. Thank you very much for your patience and understanding. If your inquiry is time-sensitive, please feel free to reach us at 856-317-6263 or at help@swisco.com.