-
Technical
This guidance note provides guidance on the different methods used to manage oil in ammonia refrigeration systems. It supersedes guidance note GN17 which has been withdrawn. In this guidance note the term “oil” is used to cover a range of lubricants including mineral oil, synthetic oil, processed mineral oil (for example, hydrocracked oil) and other synthetic compounds such as alkyl benzene, polyalkyl glycol, polyol ester and polyalfaolefin. Not all of these synthetic compounds are compatible with ammonia.
Oil management on the low-pressure side of ammonia systems is necessary to keep the evaporators in good working order and to maintain system efficiency. The type of facility provided for the removal of oil from the low-pressure side of the system depends on the type of system, the type of oil, the level of manual intervention expected by the end user and the capital cost constraint on the installation.
Members - sign in to your web account to download this free pdf.
Not a member? Join here to download this and other publications
Recent posts
About the IOR
23 Apr 2026
The Institute of Refrigeration is the professional engineering body for all individuals working in RACHP. Find out more about the IOR here.
News
What we do
23 Apr 2026
Find out what the IOR can do for you: technical queries, safety codes of practice, new technologies and professional development.
News
Join us
23 Apr 2026
When you become a member of the Institute of Refrigeration you are joining a group of specialist experts driving the sector forward.
News
Institute of Refrigeration Midlands Regional Event
27 Aug 2026
The IOR is inviting individuals working in the RACHP sector from across the Midlands to attend a regional gathering of members on 16 September 2026 which will be hosted at the Daikin Training Centre in Birmingham.
Live event
Engaging with 100 Schools by Christmas
26 Aug 2026
The IOR Industry Skills Alliance has set an ambitious target to engage with 100 schools before the end of the year as part of its ongoing efforts to raise awareness of careers in the RACHP sector.
EducationSitemap
