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cant effect on the safety. Care should be taken to ensure a
sufficient ventilation before.
Ventilated room – (see Clause GG.5) Safety of the appli-
ance 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 cor-
rect 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 flam-
mable 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 possi-
ble.
● Discharge capacitors in a way that won't cause any
spark. The standard procedure to short circuit the capaci-
tor 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 flam-
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