A judgment debtor to whom money is due or to become due which would otherwise be subject to suggestion under this article may have the same exempted from levy in the manner and to the extent provided for by article eight of this chapter. The exemption may be claimed for sums currently accruing but must be asserted anew as to any salary or wages which shall begin to accrue after the next payment date. Such exemption shall not be binding upon a suggestee unless and until a certificate of exemption or true copy thereof shall have been delivered to him