24-08-2007, Harry Yates: the system had become extensively air-locked which has had a detrimental effect on noise generation from the circulating pumps.
03-10-2007, Harry Yates: the noise was being generated by a shaft bearing on one of the primary circulating pumps, this pump has been taken out of service so the noise should have stopped
10-10-2007, Harry Yates: the bearings on one of the pumps were defective and making a noise the pumps were changed over and the noisy pump will be repaired in due course
19-10-2007, Harry Yates: I have requested that the contractors attend site, investigate and carry out remedial work as appropriate
06-04-2008, Harry Yayes: We will get a report from site and see what has been causing the increased noise levels and take the appropriate action.
19-12-2008, Harry Yates: a couple of problems with one boiler and two pumps remedial action continues to be carried out