Exam Question
For a vapour compression refrigeration machine, state how EACH of the following faults are indicated and how they are remedied:
(a) Air in the system
(b) Moisture in the system
(c) Undercharge
(d) Overcharge
Class 2 (2nd Engineer)
MEP
📅 Jul 2022
Reference Answer
(a) Air in the system:
Indication:
This may cause the refrigeration compressor to overheat, with a high discharge pressure and normal condensing temperature.
There are possibilities of small air bubbles in the liquid sight glass of the condenser.
Indication:
This may cause the refrigeration compressor to overheat, with a high discharge pressure and normal condensing temperature.
There are possibilities of small air bubbles in the liquid sight glass of the condenser.
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