Replace this pump with the: 
Grundfos 15 20 CIl  
 
 
  
Materials of construction suitable for potable water 
 
3 speed operation for lower power consumption 
Flows to 65 litres/minute, heads to 6m 
Quiet operation (<45 db A) 
Pump Performance: Max. flow speeds 1, 2, 3: 20 l/m, 42 l/m, 65 l/m
 Max heads speeds 1, 2, 3: 3m, 5m, 6m
 Liquid: Max. operating water temperature: 80º C; Temperature: Class 110
 Materials: Pump body: Bronze, DR, Back Plate and Rotor; Can: Stainless Steel; Impeller: PPO
 Installation: Maximum ambient temperature: 40º C; Maximum operating pressure: 10 bar
 Port Spacing: 150m; Pipe connections suction/discharge ; 1-1/4" BSP M
 Optional Union Set: 1-1/4" BSP F/3/4" BSP F
 Electrical data: Rated voltage: 240V, Mains frequency: 50 Hz
 Current Max: 0.4 amps Capacitor: 3uF, Power consumption speeds 1, 2, 3: 46W, 67W, 100W
 Motor Duty: Continuous Motor type: Canned rotor; Motor protection: In-built thermal overload
 Ingress protection: IP 42 Insulation class: F; Power cable length: 1.2m; Net weight: 4.0 kg