5 Jan 2023
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 It supersedes guidance note GN17 which has been withdrawn.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.
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2 Mar 2026
Members are invited to attend the launch of the IOR's Industry Skills Alliance. This event is open to individuals interested in shaping the future of the skills agenda for the RACHP sector. Find out more about the evet and the role of the Skills Alliance here.
9 Oct 2024
Consultation on proposed changes to IOR Constitution now open for comment
9 Mar 2026
The recording for the IOR TechTalk on “Unscrambling the Refrigerant Clutter for the Future” on 5th March is now available from the IOR Webinar Channel.
3 Mar 2026
The Engineering and Building Services Skills Alliance (EBSSA) published recently their strategic Sector Skills Plan, as part of the work undertaken by the Construction Mission Skills Board.
26 Feb 2026
We're delighted to announce that the IOR Technician App has been shortlisted as a finalist for the ACR News Awards in the Training Initiative of the Year Category.