Clear laundry line blockage Ran k45 cable to clear blockage in laundry line backup . This is the second time that Laundry has backed up within 2 years. Drain is cast iron. Customer states that laundry sometimes backs up into kitchen sink. We were able to successfully clear blockage. We tested drain multiple times by running draining cycles with laundry machine. Clearing successful. Sewer supervisor scheduled for tomorrow to investigate further and provide permanent solution.