Saneo A019-05KR2 Manual Del Usuario página 36

safety checks and component inspection procedures. In the presence of a fault that
may compromise safety, no power supply shall be connected to the circuit until the
fault has been satisfactorily addressed. If the defect cannot be corrected immediately
but it is necessary to continue the operations, an appropriate temporary solution
must be used. This should be communicated to the owner of the equipment so that
all parties involved are aware of it.
Initial security checks should include :
- checking that the capacitors are discharged: this must be done in a safe way
to avoid any possibility of sparks;
- verification that no live electrical components or wiring are exposed during
charging, recovery or purging of the system;
- verification that there is continuity of the equipotential bonding to earth.
- Repairs of hermetic components
During repairs of hermetic components, all power supplies must be disconnected
from the equipment undergoing operations before any removal of hermetic covers,
etc. If it is absolutely necessary to supply the equipment with electricity during
service operations, a permanently operating leak detection device must be located at
the most critical point to warn in case of a potentially dangerous situation.
Particular attention should be paid to the following to ensure that when working on
electrical components, the enclosure is not altered in a way that alters the level of
protection. This should include damage to cables, excessive number of connections,
terminals that do not meet the original specification, damage to seals, incorrect
adjustment of cable glands, etc.
Make sure that the unit is mounted safely.
Ensure that the joints or sealing materials have not degraded to the point of no
longer preventing the penetration of flammable atmospheres. Spare parts must
comply with the manufacturer's specifications,
NOTE: The use of a silicone sealant can inhibit the effectiveness of certain types of
leak detection equipment. Intrinsically safe components do not have to be isolated
before undergoing a procedure.
Repair of intrinsically safe components
-
Do not apply inductive loads or permanent capacities to the circuit without ensuring
that it will not exceed the permissible voltage and current allowed for the equipment
used.
Intrinsically safe components are the only types that can be worked on when they
are energized in a flammable atmosphere. The test equipment must have the correct
rated characteristics.