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2
Warn ngs (for us ng R290 refr gerant only)
follow ng precaut ons shall be compl ed w th pr or to conduct ng work
on the system.
2) Work procedure
Work shall be undertaken under a controlled procedure so as to
m n m se the r sk of a flammable gas or vapour be ng present wh le
the work s be ng performed.
3) General work area
All ma ntenance staff and others work ng n the local area shall be
nstructed on the nature of work be ng carr ed out. Work n conf ned
spaces shall be avo ded. The area around the workspace shall be
sect oned off. Ensure that the cond t ons w th n the area have been
made safe by control of flammable mater al.
4) Check ng for presence of refr gerant
The area shall be checked w th an appropr ate refr gerant
detector pr or to and dur ng work, to ensure the techn c an s
aware of potent ally flammable atmospheres. Ensure that the leak
detect on equ pment be ng used s su table for use w th flammable
refr gerants, .e. non-spark ng, adequately sealed or ntr ns cally
safe.
5) Presence of f re ext ngu sher
If any hot work s to be conducted on the refr gerat on equ pment or
any assoc ated parts, appropr ate f re ext ngu sh ng equ pment shall
be ava lable to hand. Have a dry powder or CO
f re ext ngu sher
2
adjacent to the charg ng area.
12 / 224 EN
Local air conditioner
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