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HVAC SYSTEM-AC COMPRESSOR
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22. Do not drop, dent or abuse refrigerant gas
cylinders.
23. Always chain or strap cylinders in place to
prevent them from tripping over or damage,
from moving around.
24. Always keep refrigerant cylinders capped.
25. Never heat a cylinder with open flame or
place electric heater in direct contact.
26. Always double check that you have proper
refrigerant container. The refrigerant cylinders
are color coded to avoid confusion. (R 134a is
gener- ally BLUE).
27. Use proper size spanners, wrenches to avoid
damages to valve and threads.
28. Never use oxygen for pressure testing a
system. It may explode in presence of oil.
Instead use nitrogen from a cylinder equipped
with
proper
pressure
regulator.