Replacement of obsolete quadrant fans in the UCV canopy

Replacement obsolete quadrant fans in the UCV canopies & inverter drives for theatres plus filter changes. The older technology no longer supported but the Trust isn't in a position to replace the whole system. In addition before hand over the following testing is required: air velocity test at 2m and 1m above FFL inline with HTM03-01 and re-balance the four quadrants/isbursted Oil Particle(DOP) or DPC testing of the filters and frames /Entrainment test to ensure clean air zone /specialist testing required after UCV canopy modifications.