Q2. a) Sketch and describe a high-pressure cut-out in a refrigeration system. (6)
b) The refrigeration compressor has stopped due to operation of the H.P. cut-out. (6)
Explain: (i) The possible causes.
ii) How these causes would be found and possible remedies.
c) What steps are taken if the compressor “Short-cycle” on low pressure cut-out? (4)
Previously Asked As
Q8. With reference to Air-conditioning system onboard your vessel:
(a) Sketch and describe high pressure cut-out in a refrigeration system.
(b) The refrigeration compressor has stopped due to operation of the h.p cut-out Explain.
(i) The possible cause.
(ii) How these causes would be found and possible remedies.
(c) What steps are taken if the compressor “short-cycle” on low pressure cut-out?
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