CIAT POWERCIAT2 LX, Instruction Manual

Page: 34 / 42

NA13.47 B EN - 32
12.1 Recommendations for use
Noise
While short-term exposure to a moderate noise level
does not pose a risk, we recommend that persons
working near to sources of significant noise wear
hearing protection. However, this must not prevent the
use of other essential protective equipment such as
safety glasses and gas masks.
Lubrication oil
The oils used in chillers pose very little risk to health
provided they are used correctly and under adequate
industrial and personal hygiene conditions. However,
always take the following precautions:
1. As far as possible, avoid unnecessarily handling oily
components. Use protective creams.
2. Oils are flammable and must be stored and handled
with care. Keep cleaning cloths away from sources
of fire.
3. The oil contained in the compressor's lubrication
system and the oil separator may cause burns,
even after the system has been powered off.
4. If the system needs to be opened just after shutting
down the compressor, e.g. to clean the oil strainer,
be sure to let the oil cool down for long enough
so that any oil splashes no longer pose a hazard
(<35 °C).
5. Containers must be stored with their caps on. Avoid
using oil from an opened container stored under
incorrect conditions.
Refrigerants - general
Refrigeration systems contain pressurised fluids and
gases. Take all the necessary precautions before
opening a circuit.
Always wear safety glasses, gloves and other protective
equipment when opening pipes or tanks that may
contain fluids.
Partially opening the primary refrigeration circuit will
release refrigerant into the atmosphere. It is essential
to minimise the amount of lost refrigerant by pumping
the charge and isolating it in another part of the system.
The lubricating oil, and the low-temperature liquid
refrigerant in particular, may cause inflammation similar
to burns if they come into contact with skin or eyes.
Store unused refrigerant in the appropriate containers
and limit the amounts stored in mechanical rooms.
Cylinders and tanks of refrigerant must be handled with
care and signs warning users of the related poisoning,
fire and explosion hazards must be clearly visible.
Refrigerant that reaches the end of its life must be
collected and recycled in accordance with applicable
regulations.
Hydrofluorocarbon refrigerants
Although non-toxic, vapours from hydrofluorocarbon
refrigerants are still hazardous because they are
heavier than air and can force the latter out of the
machine rooms.
If refrigerant is accidentally released, ventilate the
room with fans. Exposure levels in workplaces must
be kept to a practical minimum and must never exceed
the recognised limit of 1000 particles per million (ppm)
for an 8-hour working day and a 40-hour working week.
Although hydrofluorocarbon refrigerants are not
flammable, keep them away from open flames (e.g.
cigarettes) as temperatures of over 300°C cause their
vapours to break down and form phosgene, hydrogen
fluoride, hydrogen chloride and other toxic compounds.
These compounds may produce severe physiological
consequences if accidentally inhaled or swallowed.
12. USE
Long stoppages can cause corrosion to develop or lead
to its acceleration by differential aeration or bacterial
development, mainly due to the presence of water. As soon
as an installation is stopped for a few weeks (downtime,
closing down for holidays, etc.) the water circuit must be
carefully drained. If necessary, use compressed air to remove any stagnant water, especially from inside pipes.
If the circuit is left without water for over a month, fill it with
nitrogen to prevent corrosion.
12.2 Prolonged stoppages