Arctiko SF SERIES, Руководство по обслуживанию, Страница: 14 / 48

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3h. Vacuum suction / Vacuum check
A vacuum is made on two locations on the system, one on the process tube and one on the pipe branch
used for testing located on the pressure tube with an explosion-proof 2-stage vacuum pump.
The pressure should be 2 mBar or lower for at least 12 hours.
The system is now ready for the filling of the refrigerant.
3i. Refrigerant filling with HC
Before filling the refrigerant, a vacuum must be suched. See section 3h.
Note that HC is to be supplied from a bottle containing a specific amount of refrigerant.
Common procedures for other refrigerants can not be used.
Further it is important that the entire contents of the bottle is introduced into system to ensure optimal perfor-
mance.
The contents of the bottle must be mixed before use by shaking the bottle for at least 1 minute before the
filling.
In order to perform the filling operation properly, it is necessary to use a capillary tube with the valve before
the filling site, instead of a conventional feeding tube. The reason is that the capillary tube ensures that the
entire quantity of refrigerant is introduced to the system. If an ordinary filler hose is used, it must be as short
as possible.
WARNING! HC is flammable!
The refrigerant cylinder is weighed before use.
The cylinder must be shaken for 1 min. before use.
During the filling procedure the cylinder must be upside down.