The Contractor shall provide maintenance and repairs to the Opex Mail Sorter - Serial #T016 and associated equipment due to normal wear and tear and bear the expense.  Upon placing a call to the Contractor, the customer can speak with a technical service representative and/or place a service call.  Contractor will respond to an initial request for service within two (2) hours.  The initial response will be provided by direct telephone call to the originating party to confirm the receipt of the request for service.  Contractor will then provide a service technician to repair the malfunctioning equipment within 8 hours of the original call.  If equipment is unable to be repaired, contractor will replace it.  Contractor shall bear cost for parts and labor to repair or replace the non-functioning equipment.  Replacement equipment will provide at least the same as, if not improved functionality as the original equipment.  Contractor shall complete repair to insure that the sorter is operational within one (1) business day.  The service technician will run complete status check on the unit to ensure that the operation is smooth and continuous and that there are no issues with the operation.