Hi lost bleeding screw on central heating grundos pump .can I still use without screw in .got new coming Tuesday .can I put my heating on or have I got to wait .thank you .or it is a gravity fed system ta
Hi I lost the bleeding screw off front of heating pump grundos .can I still put heating on if screw missing.its a gravity fed system back boiler.many thanks . waiting for new screw not here till Tuesday.thank you .