Immergas MAGIS M4-30 Use And Installation page 136

16) Charging procedure.
In addition to conventional charging procedures, the following requirements must be complied with:
• Make sure that different refrigerant contaminations do not occur when using recharging equipment. The tubes or pipes
must be as short as possible to minimise the amount of refrigerant therein.
• The cylinders must be kept upright.
• Make sure that the chilling system is earthed before charging the system with refrigerant.
• Label the circuit when the charge is complete (unless this has already been done).
• Pay the utmost attention not to subsequently fill the chilling circuit.
• Before recharging the circuit, it must undergo a pressurised leak test with nitrogen.
17) Deactivation.
Before performing this operation, the technician must have extensive knowledge of the appliance and all its details. It is
good practice that the refrigerant be recovered correctly. Before performing the intervention, an oil and refrigerant sample
must be withdrawn.
If an analysis needs to be performed before recovering the refrigerant, power must be available.
a) Become acquainted with the appliance and its operation.
b) Disconnect power to the product.
c) Before starting the activity, proceed as follows:
• Ascertain, where necessary, the availability of mechanical equipment to handle the refrigerant cylinders.
•Check that personal protective equipment is available and used correctly.
• Make sure that the recovery operation is supervised at all times by a skilled person.
• The equipment and the recovery cylinders comply with current regulations.
d) Empty the chilling circuit by means of the specific service ports.
e) If it is not possible to discharge the circuit by means of the specific service ports, make a "manifold" so that the refrigerant
can be removed from other points of the system.
f) Make sure that the cylinder is placed on the scale before proceeding with recovery.
g) Start the recovery machine and follow the instructions given by the manufacturer.
h) Do not overfill the cylinders. (Do not exceed 80% of the charge volume of the liquid).
i) Do not exceed the maximum working pressure of the cylinder, not even temporarily.
j) When the cylinders have been filled to the maximum capacity and the intervention has been completed, make sure that
these and the equipment are immediately removed from the area and that all shut-off valves on the equipment are closed.
k) The recovered refrigerant cannot be recharged into another chilling system unless it has been regenerated and controlled.
18) Labelling.
The appliance must be labelled with an indication that it has been decommissioned and the refrigerant emptied. The label
must be dated and signed. Make sure that there are labels on the appliance indicating that it contains flammable refrigerant.
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