Inventum AC127W Mode D'emploi page 23

a) Familiarize yourself with the equipment and its operation.
b) Disconnect the electrical connection between the system nd the power supply.
c) Prior to starting the work, check that the following items have been met:
• All required mechanical provisions are present, e.g. to handle the refrigerant cylinders;
• All personal protective equipment is present and is used correctly;
• There is always a competent person present who supervises the draining process;
• All draining equipment and storage cylinders comply with the applicable standards.
d) Preferably pump empty the cooling system, if this is possible.
e) If pumping empty is not possible, use a suitable distributor to remove as much refrigerant as possible from the different
sections of the system.
f) Place the cylinder on the weighing scale before draining starts.
g) Start the draining system and work in accordance with the manufacturer's instructions.
h) Never fill cylinders by more than is permitted. (Maximum 80% liquid volume).
i) Never exceed the maximum operating pressure of the cylinder, not even briefly.
j) When the cylinders are filled correctly and the process has been completed, immediately remove all cylinders and
equipment from the location and close all valves of the equipment.
k) Never fill drained refrigerant in another cooling system, before cleaning and checking it.
15. Marks (Appendix DD.12)
Apply markings on the equipment stating that it has been decommissioned and that the refrigerant has been removed.
Write the date on the marking, as well as your name. Apply markings on the equipment indicating that the equipment contains
combustible refrigerant.
16. Draining (Appendix DD.13)
When removing refrigerant from a system, for maintenance or decommissioning, it is recommended to remove all refrigerants
to a safe location. When draining refrigerant, only use cylinders that are suitable for storing refrigerant. Ensure there are
sufficient cylinders available to store the entire volume of the cooling system. Only use cylinders that are suitable for storing
the refrigerant to be drained and apply markings indicating which refrigerant they contain (i.e. use special storage cylinders).
The cylinders must be complete, including properly functioning overpressure valves and valves. Pump empty storage cylinders
empty and cool them, if possible, before gas is stored in them.
The draining system must be in a good condition and have a manual describing the equipment used, and must be suitable
for collecting combustible refrigerants. In addition, a calibrated weighing scale should be available that is working correctly.
All hoses should be provided with coupling that work correctly and are free from leaks. Prior to using the draining system,
check that it is in a good conditions, well maintained and that all accompanying electrical components are sufficiently guarded
to prevent ignition in the event of a refrigerant leak. In case of doubt, consult the manufacturer.
Hand in the collected refrigerant in the correct storage cylinder at the refrigerant supplier and ask for a receipt for the submitted
waste materials. Do not mix refrigerants in the draining system and certainly not in the cylinders.
If compressors or compressor oils must be removed, first empty the appliance to a level at which no combustible refrigerant
remains in the lubricant. Emptying should take place before the compressor is sent back to the supplier. The compressor body
may only be heated electrically in order to accelerate the process (not with an open flame). When oil must be removed from
a system, do this in a safe way.
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