APG will send a repaired, and fully warranted capital item from our stock to the customer in return for the customers' used, unrepaired "core." This exchange core will then be repaired by APG and the end user is responsible for the repair price. This program allows end users to have all of the capital items needed for an outage on site prior to the outage. No risk of parts being late, or extended outages due to a delay in the return of the parts out for repair.