Arrived at location on 3/14/22 - Arrived onsite to check Prince Castle bun steamer. Checked voltage at plug and to unit - 214/60/1. Brought unit into operation. Unit heating through preheat, ready mode and initiated steam cycle. No water flow. Checked and found water dispense tube totally encrusted with scale. Silicone tube compromised and needs to be replaced. Will need to order, return and replace. Steamer not in service. QWP authorized by Brenda Ferguson. Returned to location on 3/17/22 - Arrived and pulled unit out and onto the table and removed the faulty dispense tube. Clean out the platen pass through hole and inserted the new SS tubing . Plug in and water in and the unit did dispense water. Close it up and set back in place and allow to fully heat and test the steam cycles and ok. Back in service.