9
Work on the refrigerant circuit
Danger
Heat pump refrigerant circuits
feature extremely low (–25 °C)
and extremely high (+130 °C)
temperatures. Work on heat
pumps can result in life threaten-
ing frost bite and burns.
■ Switch off the heat pump at
least 30 min
before working on
it.
■ If at all possible, avoid touching
the injection valve and com-
pressor; wear protective
gloves, if contact is necessary.
■ Wear suitable protective cloth-
ing.
Danger
R410A is a non-poisonous gas
that displaces air. Unregulated
escape of refrigerant R410A in
enclosed spaces can result in dif-
ficulties in breathing and suffoca-
tion.
■ Never breathe in refrigerant
vapours.
■ Ensure adequate ventilation in
enclosed spaces.
■ Prevent open flames.
■ Observe and adhere to regula-
tions and guidelines about han-
dling refrigerant.
Danger
Direct contact with refrigerant
can harm skin.
■ Only work on the refrigerant cir-
cuit whilst wearing safety gog-
gles and gloves.
Note
Work on the refrigerant cir-
cuit must only be carried out by
a qualified refrigeration engi-
neer.
■ Wear suitable protective cloth-
ing.
Safety and liability
Occupational safety
(cont.)
5772 458 GB
Service
