NewAir NAC14KWH03 Owner's Manual page 31

Switching off the appliance and opening the housing has no significant effect
on the safety. Nevertheless, it is possible that leaking refrigerant could
accumulate inside the enclosure and that flammable refrigerant could be
released when the housing is opened.
• In the case of ventilated enclosure – (see Clause GG.4) Safety of the
appliance depends on ventilation of the housing. Switching off the appliance
and/or opening the enclosure has a significant effect on safety. Care should
be taken to ensure sufficient ventilation before housing is opened.
• Ventilated room – (see Clause GG.5) Safety of the appliance depends on the
ventilation of the room. Switching off the appliance or opening the housing
has no significant effect on the safety. The ventilation of the room should
not be shut off during repair procedures.
• Information about the concept of sealed components and sealed enclosures
according to IEC 60079-15:2010.
Information about correct working procedures:
a) Commissioning
• Ensure that the floor area is sufficient for the refrigerant charge or that the
ventilation duct is assembled in the correct manner.
• Connect the pipes and carry out a leak test before charging with refrigerant.
• Check safety equipment before using.
b) Maintenance
• Portable equipment should be repaired outside or in a workshop specially
equipped for servicing units with flammable refrigerants.
• Ensure sufficient ventilation at the repair location.
• Be aware that malfunction of the equipment could be caused by refrigerant
loss and therefore a refrigerant leak is possible.
• Discharge capacitors in a way that will not create sparking. Be aware that the
standard procedure for short circuiting capacitor terminals usually creates
sparks.
• Reassemble sealed enclosures accurately. If seals are worn, replace them.
• Check safety equipment before using.
c) Repair
• Portable equipment shall be repaired outside or in a workshop specially
equipped for servicing units with flammable refrigerants.
• Ensure sufficient ventilation at the repair location.
• Be aware that malfunction of the equipment might be caused by refrigerant
loss and that a refrigerant leak is possible.
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