Ruby ZEUS 7000 Manual De Instrucciones página 82

Ventilated enclosure – (see Clause GG.4) Safety of the appliance depends on ventilation of the housing.
Switching off the appliance or opening of the enclosure has a signifi cant effect on the safety. Care should
be taken to ensure a suffi cient ventilation before.
Ventilated room – (see Clause GG.5) Safety of the appliance depends on the ventilation of the room.
Switching off the appliance or opening of the housing has no signifi cant effect on the safety. The
ventilation of the room shall not be switched off during repair procedures.
Information about the concept of sealed components and sealed enclosures according to IEC 60079-
15:2010.
• Portable equipment shall be repaired outside or in a workshop specially equipped for servicing units
with fl ammable refrigerants.
• Ensure suffi cient ventilation at the repair place.
• Be aware that malfunction of the equipment may be caused by refrigerant loss and a refrigerant leak
is possible.
• Discharge capacitors in a way that won't cause any spark. The standard procedure to short circuit
the capacitor terminals usually creates sparks.
• Reassemble sealed enclosures accurately. If seals are worn, replace them.
• Check safety equipment before putting into service.
c) Repair
• Portable equipment shall be repaired outside or in a workshop specially equipped for servicing units
with fl ammable refrigerants.
• Ensure suffi cient ventilation at the repair place.
• Be aware that malfunction of the equipment may be caused by refrigerant loss and a refrigerant leak
is possible.
• Discharge capacitors in a way that won't cause any spark.
• When brazing is required, the following procedures shall be carried out in the right order:
– Remove the refrigerant. If the recovery is not required by national regulations, drain the refrigerant
to the outside. Take care that the drained refrigerant will not cause any danger. In doubt, one person
should guard the outlet. Take special care that drained refrigerant will not fl oat back into the building.
– Evacuate the refrigerant circuit.
– Purge the refrigerant circuit with nitrogen for 5 min.
– Evacuate again.
– Remove parts to be replaced by cutting, not by fl ame.
– Purge the braze point with nitrogen during the brazing procedure.
– Carry out a leak test before charging with refrigerant.
• Reassemble sealed enclosures accurately. If seals are worn, replace them.
• Check safety equipment before putting into service.
d) Decommissioning
• If the safety is affected when the equipment is putted out of service, the refrigerant charge shall be
removed before decommissioning.
• Ensure suffi cient ventilation at the equipment location.
• Be aware that malfunction of the equipment may be caused by refrigerant loss and a refrigerant leak
is possible.
• Discharge capacitors in a way that won't cause any spark.
• Remove the refrigerant. If the recovery is not required by national regulations, drain the refrigerant to
the outside. Take care that the drained refrigerant will not cause any danger. In doubt, one person
should guard the outlet. Take special care that drained refrigerant will not fl oat back into the building.
• Evacuate the refrigerant circuit.
• Purge the refrigerant circuit with nitrogen for 5 min.
• Evacuate again.
• Fill with nitrogen up to atmospheric pressure.
• Put a label on the equipment that the refrigerant is removed.
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