Hi
I am sure that have read some where, that when a CH pump e.g. Grundfos is fitted to a CH system ( which is new system or has been fully drained system ) that the pump spindle should be manually rotated before electrical power is applied to ensure that there is water on both sides of the pump.
If this is not done there is a chance that the bearings could be damaged ?
Am I correct ?
I am sure that have read some where, that when a CH pump e.g. Grundfos is fitted to a CH system ( which is new system or has been fully drained system ) that the pump spindle should be manually rotated before electrical power is applied to ensure that there is water on both sides of the pump.
If this is not done there is a chance that the bearings could be damaged ?
Am I correct ?