shower pump problem

[MartY_sp]

hi guys ,
Having a problem with my shower pump .
when having or turning on the shower the pump starts but shortly after stops running . Can leave for a while and start it up again and does exactly the same thing . Any ideas ?
its a New team Duraspeed serial or model number 044516

 

[GeckoGas-com]

Is the pipework sized enough to supply the pump with the quantity of water it needs?

 

[MartY_sp]

The pump was installed under 3years ago now and have had no trouble untill a couple of days ago .