Which Sanremo espresso machines is this pump listed for?
This pump is listed for Sanremo Treviso and Treviso LX machines. Before ordering, check your exact machine version and compare the original pump's model, electrical ratings, mounting, and water connections.
What voltage, frequency, and power does this pump require?
The ULKA EP4R is rated at 220-240V, 50Hz, and 42W. Check all three ratings against the label on your existing pump and your machine's parts information. Do not assume a different voltage or frequency version will work just because it looks similar.
Who makes the pump, and which part reference should I check?
The pump is manufactured by ULKA for Sanremo. The pump model is EP4R, and the Sanremo part reference is 10255038. Use both references when checking the replacement against your original unit or machine's parts list.
Is the EP4R a vibration pump or a rotary pump?
The EP4R is a vibration pump, also called a vibratory pump. It supplies water through the espresso machine's hydraulic system. It is not a rotary vane pump, so match the pump type specified for your machine.
What is the pump made from, and is it NSF approved?
The pump combines metal and plastic components. It is made in Italy and is NSF approved.
Will replacing the pump fix poor water flow, and can I install it myself?
A correctly matched replacement can help restore normal water delivery if the existing pump is worn or faulty. We recommend having an espresso machine technician check the fault first, confirm the correct replacement, and install and test the pump. Poor flow can have other causes, so replacing the pump is not always the solution.
What comes with the replacement vibration pump?
You receive one replacement vibration pump. Tubing, fittings, and mounting brackets are not specified as included. Have your technician check which installation parts are needed and whether any existing components are suitable for reuse.