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should be taken to ensure a sufficient 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 significant 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.
• Information about the correct working procedures:
a) Commissioning
- Ensure that the floor area is sufficient for the
refrigerant charge or that the ventilation duct is
assembled in a correct manner.
- Connect the pipes and carry out a leak test before
charging with refrigerant.
- Check safety equipment before putting into service.
b) Maintenance
- Portable equipment shall be repaired outside or in a
workshop specially equipped for servicing units with
flammable refrigerants.
- Ensure sufficient 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.
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