Go Repairs

Pumps

So your pump has finally packed in and its time for a new one. Well take caution as this involves water and electricity, so be safe. Pumps can be located anywhere in the home (under floors, in panels, behind cupboards, the loft etc...). They can also be inside the boiler casing or outside the boiler on the system pipework. So for the sake of saving time I will assume you have located your pump.

Replacing A Pump On The System.

 

  • Turn off system before and allow to cool.

 

  • Turn off the electricity supply to heating system/pump. Check at pump with tester that electricity isn't present.

 

  •  Turn off pump valves located either side of the pump.

 

  • Place container or old cloth ready to catch water from the pump.

 

  • Slowly undo pump unions (the nuts holding the pump in place), remove pump and check the condition of the washers - replacing if necessary.

 

  •  Transfer wiring from old pump to new.

 

  • Install new pump, tighten unions and turn pump valves back on.

 

  • Bleed pump.(How to bleed pump at bottom of page.)

 

  • Check for leaks and wipe off any excess water on the pump or wiring if you've spilled any.

 

  • Turn electricity supply back on to the pump and test operation.

 

Job Done!

Replacing A Pump Head Only.

 

  • Turn off system before and allow to cool.

 

  • Turn off the electricity supply to heating system/pump. Check at pump with tester that electricity isn't present.

 

  • Turn off pump valves, located either side of pump.

 

  • Place container or old cloth ready to catch water from the pump.

 

  • Slowly undo allen/hexagon head screws (or whatever type of screw type hold your pump head to the body), remove pump head and check the washer condition - replacing if necessary.

 

  • Install new pump head, tighten allen/hexagon head screws and turn pump valves back on.

 

  • Bleed pump. (How to bleed pump at bottom of page.)

 

  • Check for leaks and wipe off any excess water on the pump or wiring if you've spilled any.

 

  • Transfer wiring from old pump to new.

 

  • Turn electricity supply back on to the pump and test operation.

 

Job Done!

Domestic pumps are like anything, varing in colour, style, price and quality. Most are interchangeable (check up on yours to find out) i.e you don't need to put the same make back in. Wilo and Grundfos are two of the market leading names.

 

Biral NRB 124-3

Biral NRb 12T-3

Biral NRB 13T-3

 

Brefco Superflow 130

Brefco Superflow 230

Brefco Superflow 500

Brefco Superflow 500 plus

 

DAB A 35/130

DAB A 55/130

DAB VA 55/130

 

Crane S10

 

Euramo Gold

Euramo Solid Gold

Euramo MX 130A

Euramo MXL 130

Grundfos Series 4/130

Grundfos Series 4/180*

Grundfos Super 4/130

Grundfos Super 4/180*

Grundfos Super 4/130 2 spd

Grundfos Super 4/180 2 spd*

Grundfos Selectric 4/130

Grundfos Selectric 4/180*

Grundfos UPS 15-45x18

Grundfos UPS 15-50x18

Grundfos UPS 15-50

 

Myson LC22

Myson LC 42

Myson LC SD 51

Myson SD 52

Myson SD 53

Myson CP 53

Myson Unit Two

Myson Unit Three

Myson Unit Five

CPL CP 53

 

Sunstrand LC 22

Sunstrand LC 42

Sunstrand LC 52

 

Smedegraad 2-65-2

Smedegraad 2-68-2

Smedegraad 2-70-2

Smedegraad EVO 2-65-2

 

SMC Cadet S

SMC Comet 130-20

SMC Comet 130-45

SMC Comet 2-130

SMC Comet 2-130-20

SMC Comet 2-180

SMC Comet 2-180-20*

SMC Comander E*

SMC Comander S*

SMC Commodore 130

SMC Commodore 180*

SMC SD 51

SMC SD 52

SMC SD 53

 

Wilo-RS 25-50

Wilo-RS 25-60

Wilo-Gold 50

 

Peglars TC 5

Wilo claims that the Wilo-Gold Rs 50 will replace the following:

* May require pipe modifications.

So with that claim from Wilo you would think it was safe to assume that any pump on this list will replace any other pump on this list.

Example of a Grundfos pump. Example of a Wilo pump. Example of a DAB pump. Example of a spindle type pump valve. Example of a Pegler terrier pump.

Bleeding A Pump

 

  • When bleeding a pump you must ensure it is cool enough to do so and that the power to it is off.

 

  • Place an old rag or container ready to catch any water.

 

  • Slowly undo the bleed screw (this is the big flat head/slot screw on the front of the pump and should only be partially undone, do not take the screw out completely) and leave open until water is present.

 

  • If water is present tighten back up, repeating the procedure if necessary.