Haier Smart Power Series Service Manual page 145

Smart Power
7.7 Charging refrigerant
7.7.1 Important information regarding the refrigerant used
This product contains fluorinated greenhouse gases covered by the Kyoto Protocol. Do not vent gases into the
atmosphere.
7.7.2 Precautions and general guidelines
• When servicing the unit requires the refrigerant system to be opened, treatment and evacuation of refrigerant
must be done in accordance with applicable legislation.
• Refrigerant can not be charged until field wiring has been completed.
Refrigerant may only be charged after performing the leak test and vacuum drying
When charging a system, care shall be taken that its maximum permissible charge is never exceeded, in view of
the danger of liquid hammer.
• Refrigerant cylinders shall be opened slowly.
• Always use protective gloves and protect your eyes when charging refrigerant.
• When the power is on, please close the front panel when leaving the unit unattended.
Charging with an unsuitable substance may cause explosions and accidents, so always ensur that the
appropriate refrigerant (R410A) is charged.
• This unit requires additional charging of refrigerant
according to the length of refrigerant piping connected
at the site.
• Make sure to charge the refrigerant in liquid state to
the liquid pipe. Since R410A is a mixed refrigerant, its
composition changes if charged in its gaseous state
and normal system operation would then no longer be
assured.
• Before charging, check whether the refrigerant cylinder
has a siphon attached or not and position the cylinder
accordingly.
On this model it is not necessary to charge additionally if
the piping length≤20m.
CAUTION
WARNING
DANGER
Fill using a cylinder
with a siphon attache
Charge the liquid
refrigerant with the
cylinder in upright
position.
143
Fill using a cylinder
with a siphon attached
Charge the liquid
refrigerant with the
cylinder in up-side-
down position.