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Test Operation
SiBE811001EB
69
CONVENI-PACK
2. After the refrigerant replenishment is completed, fill out the item “total amount of refrigerant
replenishment” on the label of instructions on refrigerant replenishment of the outdoor unit
with the actual amount of refrigerant replenishment.
Refer to the illustration of the label pasting position for instructions on refrigerant
replenishment (see the illustration on the above).
[Precautions for refrigerant cylinder]
At the time of refrigerant filling, check whether the siphon tube is provided. Then locate the
cylinder so that the refrigerant will be filled in the state of liquid (see table below).
R-410A is a mixed refrigerant, the composition of which may change and the normal operation
of the system may not be possible if the refrigerant is filled in the state of gas.
[Check through sight glass]
Caution
Fully open the stop valves on the liquid and gas sides after the refrigerant
replenishment is finished.
The compressor will malfunction if the system is operated with the stop valves closed.
Apply a screw lock agent to the screws of the valve cover mounting parts and service
ports.
(Otherwise, dew condensation water will intrude and freeze inside and cause cap
deformation or damage, which may result in refrigerant gas leakage or compressor
malfunctions.)
5.8
Test Operation
For test operation operators
Do not operate the outdoor unit alone on a trial basis.
When you connect a booster unit, refer to the installation manual attached to the booster unit
before a test operation.
Test operation procedure
Use the following procedure to perform a test operation after installation work is complete for the
entire system:
1.
Fully open the stop valves on the gas and liquid side of the outdoor unit.
2.
Check that the electric accessory box lids of the outdoor unit, the indoor unit (air-conditioner,
refrigeration showcase, refrigeration unit cooler) and the piping cover of the outdoor unit are
closed. Then turn ON the outdoor and indoor units (air-conditioner, refrigeration showcase,
refrigeration unit cooler).
3.
Turn ON the operation switch from the inspection door of the outdoor unit. (The outdoor unit
fan rotates in about 10 minutes after the operation switch is turned ON and the compressor
starts.)
4.
Press the ON/OFF button on the remote controller of the outdoor unit (air-conditioner) to
operate the unit.
Cylinder provided with siphon tube.
Other cylinders
Stand the cylinder upright and fill the refrigerant.
(There is a siphon tube inside, which makes it
possible to replenish the refrigerant in the state of
liquid without setting the cylinder upside down.)
Stand the cylinder upside down and fill the
refrigerant.
(Pay attention so that the cylinder will not topple
down.)
Full of liquid
Sealing state
Refrigerant insufficiency
Sight glass
A little foam
flows.
Foam always
comes out.