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FACILITY PERSPECTIVES | VOLUME 9 NUMBER 3 23
Oil samples were more difficult to get, and were taken from
the separation system, where there was a Schrader valve on
the oil filter. The same hose was used to take the oil sample
as the refrigerant sample.
Once it had been extracted, the oil was fizzy with dissolved
refrigerant, and had to stand with the lid off for 30 to 40
minutes before being sealed. Overall, the sampling process
was quick and easy, taking around 15--20 minutes per circuit,
including the time to complete the information forms.
The samples were sent to A-Gas for full analysis. In return,
a full report on the refrigerant and the oil, together with the
steps needed to improve the health of the system, was sent to
Faircloth & Reynolds via Airefrig Australia.
The results showed that all four circuits were running on
R407C -- in the correct composition, and not fractionated. It
is likely that the system originally ran on R22, but had been
retrofitted to R407C.
The refrigerant in all circuits was in good condition,
although moisture levels were well above new refrigerant
standard (which is less than 10 parts per million), with one
circuit analysed at 175 parts per million.
Three out of four of the circuits failed on particulates;
however, the moisture and particulates issue can be resolved
by changing the filter dryers on each circuit -- an easy fix. The
findings proved the early warning capability of RHC. Without
troubleshooting, there is the risk that moisture can react with
HFC refrigerants such as R407C to produce hydrofluoric acid,
which attacks seals, motor windings and discharge valves,
causing extensive compressor damage.
Analysis identified that the oil was in good condition in all
circuits, although it was a little dirty, and had elevated silicon
levels. Overall, none of the oil samples raised any concern,
but it was suggested that changing the oil filter on three of the
four circuits to clean the system would be beneficial.
Faircloth & Reynolds Commissioner Beau Beaton says, 'Refrig
Health Check came with all the necessary equipment to
make taking a sample of oil and refrigerant simple, easy and
accurate. The report gave us exactly what we were looking for
on an old unlabelled system. We were able to determine the
type of refrigerant and quality'.
Airefrig Australia Sales Manager Kieren Brotherton says, 'It
was great to see how the contractor used this new product
on site, and how easy it was to take the refrigerant and oil
samples. I believe it will be of great support to customers
and a very useful tool to incorporate in their annual
This trial was an ideal test for RHC, which proved its value as
a product to identify contamination before it causes system
damage. The feedback from the wholesaler and contractor
showed that RHC more than proved its worth. For further
information, or for your nearest stockist, call 1800 002 427.
For more information, contact A-Gas:
A-Gas (Australia) Pty Ltd
9--11 Oxford Road
Tel +61 (0) 3 9368 9222
A-Gas is an international group of companies with
headquarters in the United Kingdom, and trading
subsidiaries in the United Kingdom, South Africa, Australia,
South-East Asia, China, Thailand, and the Americas.
Our core business is focused on:
3 refrigerants used for heat exchange in air conditioning
and chilling applications
3 industrial special products, including industrial and
specialty gases used in a variety of applications
3 providing full environmental services for the recovery
and reclamation of environmentally sensitive
products, such as HCFCs, HFCs, Halons and
3 performance chemicals, such as blowing agents, used
in the manufacture of insulating foams and chemicals
used in the electronics industry
3 fire protection recovery, reclamation storage and
management of Halons, and supply and reclamation
of Clean Agent Fire suppressants, such as HFC227ea,
HFC125 and HFC236fa.
A-Gas, founded in 1993, is a market leader in the supply
of refrigerants within its core territories in the United
Kingdom, Australia and South Africa, with modern state-of-
the-art storage, blending and packaging facilities in Bristol,
Melbourne and Cape Town. A-Gas is rapidly growing its
market share in Asia and the Americas, with sales and
technical staff based in Singapore, China and Thailand,
and with the recent acquisition of substantial facilities in the
United States in Houston and Ohio to support A-Gas's long-
established Pennsylvania sales office.
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