Panasonic U-4..6ML5XPQ, Service Manual

Page: 88 / 283

Test Operation
76 Test Operation
To avoid compressor breakdown. Do not charge the refrigerant more than the specified
amount.
„
This outdoor unit is factory charged with refrigerant and depending on pipe sizes and pipe
lengths some systems require additional charging of refrigerant. See "How to calculate the
additional refrigerant to be charged" on page 249.
„
In case re-charge is required, refer to the nameplate of the unit. The nameplate states the
type of refrigerant and necessary amount.
Precautions when adding R-410A
Be sure to charge the specified amount of refrigerant in liquid state to the liquid pipe.
Since this refrigerant is a mixed refrigerant, adding it in gas form may cause the refrigerant
composition to change, preventing normal operation.
„
Before charging, check whether the refrigerant cylinder is equipped with a siphon tube or
not.
1.1.4.1 Important information regarding the refrigerant used
This product contains fluorinated greenhouse gases covered by the Kyoto Protocol. Do not vent
gases into the atmosphere.
Refrigerant type: R-410A
GWP
(1)
value: 1975
(1)
GWP = global warming potential
Please fill in with indelible ink,
„
the factory refrigerant charge of the product,
„
the additional refrigerant amount charged in the field and
„
+ the total refrigerant charge
on the refrigerant charge label supplied with the product.
The filled out label must be adhered in the proximity of the product charging port (e.g. onto the
inside of the service cover).
Charge the liquid
refrigerant with the cylinder
in upright position. Charge the liquid
refrigerant with the cylinder
in up-side-down position.
total refrigerant charge
outdoor unit
refrigerant cylinder and
manifold for charging
additional refrigerant amount charged
in the field
factory refrigerant charge of the product:
see unit name plate
Contains fluorinated greenhouse gases
covered by the Kyoto Protocol
Urban Multi ML5 · Mini UM · Heat Pump