Alpha 2l pump

[MZR]

Hi all

got called out to service a boiler today asked customer if there's any problems ? Oh the heating not worked for 3 weeks ! So switched the heating on to the Icos 12he boiler fires up then burner goes out and burner light flashes, I went to check the pump to find the new grind dos alpha2l pump , any ideas how to check see if it's wirking ? The power is on as it displays "on" but I'm not sure if it spinning ? I pressed the arrow under the display but nothing changed ? Unplug it and plug back in I see the lights all come on them they go down one by one until off ? The pump sounds like it's pumping but what carnt check it any ideas guys

are thes pumps meant to show the speed of the pump when on ?

Cheers all

 

[bigads28]

ALPHA2 L | Grundfos

Push the arrow button so that you have the the lines on the left on, thats speed 3.

The display should show a number, at speed 3 this should be in the 40's. If it isn't then it isn't shifting water, these things can be a real to clear air from.

 

[GrahamM]

These need to fitted properly or will give issues.
Make sure fitted on correct plane and cable drops directly down from bottom of pump.
Put on to stage 3 and run for about 10mins to clear air from pump. Then should show 40-45w on display if all is well.

 

[MZR]

When I press the arrow nothing happens at all ? I've tried holding the arrow button in for 10 secs still nothing display just says on