Q4. With reference to main starting air compressors:
(a) State THREE maintenance procedures that maintain their efficiency: (6)
(b) Describe the procedure for the manual starting of a compressor. (10)
Q4. With reference to compressed air systems, explain the PURPOSE of EACH of the following:
(a) Fusible plug on compressor discharge (4)
(b) Fusible plug on air receiver (4)
(c) Bursting disc on water cooled air compressor (4)
(d) Drain valve (unloader) on compressor (4)
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