← MeoMock / Written exams
Class 4 (4th Engineer) MEKG 📅 Aug 2022

Exam Question

With reference to main refrigeration plants give reason for each of the following operational irregularities and state how these are dealt with:

(a) Rapid loss of lubricating oil from the crankcase of a "Vee" block compressor (4)

(b) Steady "fail off" in refrigeration effect over a comparatively short period of time (4)

(c) Excessive "icing up" at compressor suction (4)

(d) Short cycling (4)

Reference Answer

### (a) Rapid Loss of Lubricating Oil from Compressor Crankcase
**Reason:**
Rapid loss of lubricating oil from a V-block compressor crankcase is primarily due to excessive oil carryover with the refrigerant gas into the system. The primary causes for this are:
1. **Mechanical Faults:**

Full answer on MeoMock — surveyor-grade reference answers for 7,000+ written exam questions.

View plans Browse library

← Browse more questions

Prepare on Android — MeoMock on Google Play