The secretary shall be in charge of the administration of the detailed affairs of the system and, in addition to such other powers and duties as are delegated by the board, shall:
     (1) Collect and record the receipt of all income of the system, including participants’ contributions, State contributions, interest and principal collections on investments as they become due and payable, and other income accruing to the system, and immediately deposit them with the State Treasurer for the account of the system;
     (2) Sign vouchers requesting the State Comptroller to draw warrants upon the State Treasurer in accordance with resolutions of the board, authorizing payments of benefits, refunds and expenses out of the funds of the system;
     (3) Certify to the State, the names of the persons from whose salary deductions are to be made and the amounts or rates to be so deducted.