Isomac Coffee Machine Vibration Pump — ULKA EX5 If your Isomac espresso machine is producing weak or no water flow, making unusual noise during extraction, or failing to build pressure, the vibration pump is a common cause. This is the correct ULKA EX5 replacement pump for most Isomac espresso machines. Part Details Brand: ULKA Model: EX5 Outlet: Brass, 1/8" BSPF Inlet: 6mm Power: 48W Frequency: 50Hz Voltage: 230V Isomac Part No.: 451001 Compatible Models Suits most Isomac espresso machines. Contact us with your model name to confirm compatibility before ordering. Symptoms of a Failing Pump Weak or no water flow from the group head Pump pressure gauge reads low or doesn't move Loud rattling or grinding noise during extraction Pump runs but no water is delivered Machine takes much longer than usual to fill the boiler Installation Notes Always unplug the machine before replacing the pump Photograph all hose and wiring connections before disconnecting Ensure inlet and outlet hoses are pushed fully onto the pump fittings and secured with clips After installation, run water through the machine before pulling a shot to prime the pump and purge air Fast dispatch from Sydney. Australian stock.
