Livoo DOM415 Manuel D'utilisation page 28

Safety precautions
installations using flammable refrigerants:
• The charge size is in accordance with
the room size within which the refrigerant
containing parts are installed;
• The ventilation machinery and outlets
are operating adequately and are not
obstructed;
• If an indirect refrigerating circuit is being
used, the secondary circuit shall be
checked for the presence of refrigerant;
• Marking to the equipment continues to be
visible and legible. Markings and signs
that are illegible shall be corrected;
• Refrigeration pipe or components are
installed in a position where they are
unlikely to be exposed to any substance
which may corrode refrigerant containing
components, unless the components
are constructed of materials which are
inherently resistant to being corroded or
are suitably protected against being so
corroded.
9) Checks to electrical devices
Repair and maintenance
components shall include initial safety checks
and component inspection procedures. If
a fault exists that could compromise safety,
then no electrical supply shall be connected
to the circuit until it is satisfactorily dealt with.
If the fault cannot be corrected immediately
but it is necessary to continue operation, an
adequate temporary solution shall be used.
This shall be reported to the owner of the
equipment so all parties are advised. Initial
safety checks shall include:
• That capacitors are discharged: this
shall be done in a safe manner to avoid
possibility of sparking;
• That there no live electrical components
and wiring are exposed while charging,
recovering or purging the system;
• That there is continuity of earth bonding.
2. Repairs to sealed components
1) During repairs to sealed components, all
electrical supplies shall be disconnected
from the equipment being worked upon prior
to any removal of sealed covers, etc. If it
EN
isabsolutely necessary to have an electrical
supply to equipment during servicing, then a
permanently operating form of leak detection
shall be located at the most critical point to
warn of a potentially hazardous situation.
2) Particular attention shall be paid to the
following to ensure that by working on electrical
components, the casing is not altered in
such a way that the level of protection is
affected. This shall include damage to cables,
excessive number of connections, terminals
not made to original specification, damage to
seals, incorrect fitting of glands, etc.
Ensure that apparatus is mounted securely.
Ensure that seals or sealing materials have
not degraded such that they no longer serve
the purpose of preventing the ingress of
flammable atmospheres. Replacement parts
shall be in accordance with the manufacturer's
specifications.
to electrical
3. Repair to intrinsically safe components
Do not apply any permanent inductive or
capacitance loads to the circuit without
ensuring that this will not exceed the
permissible voltage and current permitted
for the equipment in use. Intrinsically safe
components are the only types that can be
worked on while live in the presence of a
flammable atmosphere. The test apparatus
shall be at the correct rating.
components only with parts specified by the
manufacturer. Other parts may result in the
ignition of refrigerant in the atmosphere from
a leak.
4. Cabling
Check that cabling will not be subject to wear,
corrosion, excessive pressure, vibration, sharp
edges or any other adverse environmental
effects. The check shall also take into ccount
the effects of aging or continual vibration from
sources such as compressors or fans.
Note
The use of silicon sealant may inhibit
the effectiveness of some types of leak
detection equipment. Intrinsically safe
components do not have to be isolated
prior to working on them.
Replace
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