When opening or closing compressor service and line isolation valves on a typical refrigeration system that is fitted with packed valves, what must you do?
A
you must first remove the stem seal cap
B
you should replace the gasket each time the valve position is changed
C
you should turn valves slowly to avoid thermal stresses due to low temperatures
D
you should never loosen or tighten the packing gland
Loading interactive features...
Question 1 / 205eccef9dbacbc34ba4d460a4
Question 1 of 205eccef9dbacbc34ba4d460a4
When opening or closing compressor service and line isolation valves on a typical refrigeration system that is fitted with packed valves, what must you do?
When opening or closing compressor service and line isolation valves on a typical refrigeration system that is fitted with packed valves, what must you do?