Gree FLEXX36HP230V1AO Installation & Owner's Manual page 35

DC Inverter Series for R410A Unitary Split Air Conditioner
4.4.1.1 General Work Area
All maintenance staff and others working in the local area shall be instructed on
the nature of work being carried out. Work in confined spaces shall be avoided. The
area around the workspace shall be sectioned off. Ensure that the conditions within
the area have been made safe by control of flammable material.
4.4.1.2 Ventilated Area
Ensure that the area is in the open or that it is adequately ventilated before
breaking into the system or conducting any hot work. A degree of ventilation shall
continue during the period that the work is carried out. The ventilation should safely
disperse any released refrigerant and preferably expel it externally into the
atmosphere.
4.4.1.3 Checks to the Refrigeration Equipment
Where electrical components are being changed, they shall be fit for the
purpose and to the correct specification. At all times the manufacturer's
maintenance and service guidelines shall be followed. If in doubt consult the
manufacturer's technical department for assistance.
The following checks shall be applied to installations using flammable
refrigerants:
(1) The ventilation machinery and outlets are operating adequately and are not
obstructed.
(2) If an indirect refrigerating circuit is being used, the secondary circuit shall be
checked for the presence of refrigerant.
(3) Marking to the equipment continues to be visible and legible. Markings and
signs that are illegible shall be corrected.
(4) Refrigeration pipe or components are installed in a position where they are
unlikely to be exposed to any substance which may corrode refrigerant
containing components, unless the components are constructed of
materials which are inherently resistant to being corroded or are suitably
protected against being so corroded.
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