Zodiac iAquaLink CONTROL Z550iQ Notice D'installation Et D'utilisation page 55

be used. However, for flammable refrigerants it is important that best practice is followed since flammability Is a
consideration. The following procedure shall be adhered to:
- remove refrigerant;
- purge the circuit with inert gas (optional for A2L);
- evacuate (optional for A2L);
- purge with inert gas (optional for A2L);
- open the circuit by cutting or brazing.
• The refrigerant charge shall be recovered into the correct recovery cylinders. For appliances containing flammable
refrigerants other than A2L refrigerants, the system shall be purged with oxygen-free nitrogen to render the appliance
safe for flammable refrigerants. This process may need to be repeated several times. Compressed air or oxygen shall
not be used for purging refrigerant systems.
Loading procedures
• Ensure that the outlet tor the vacuum pump is not close to any potential ignition sources and that ventilation is
available.
• In addition to conventional charging procedures, the following requirements shall be followed.
- Ensure that contamination of different refrigerants does not occur when using charging equipment. Hoses or lines
shall be as short as possible to minimise the amount of refrigerant contained in them.
- Cylinders shall be kept in an appropriate position according to the instructions.
- Ensure that the refrigerating system is earthed prior to charging the system with refrigerant.
- Label the system when charging is complete (if not already).
- Extreme care shall be taken not to overfill the refrigerating system.
• Prior to recharging the system, it shall be pressure-tested with the appropriate purging gas. The system shall be leak-
tested on completion of charging but prior to commissioning. A follow up leak test shall be carried out prior to leaving
the site.
Dismantling
• Before carrying out this procedure, it is essential that the technician is completely familiar with the equipment and
all its detail. It is recommended good practice that all refrigerants are recovered safely. Prior to the task being carried
out, an oil and refrigerant sample shall be taken in case analysis is required prior to re-use of recovered refrigerant. It
is essential that electrical power is available before the task is commenced.
1. Become familiar with the equipment and its operation.
2. Isolate system electrically.
3. Before attempting the procedure, ensure that:
- mechanical handling equipment is available. if required. for handling refrigerant cylinders;
- all personal protective equipment is available and being used correctly:
- the recovery process is supervised at all times by a competent person;
- recovery equipment and cylinders conform to the appropriate standards.
4. Pump down refrigerant system, if possible.
5. If a vacuum is not possible, make a manifold so that refrigerant can be removed from various parts of the system
6. Make sure that cylinder is situated on the scales before recovery takes place.
7. Start the recovery machine and operate in accordance with instructions.
8. Do not overfill cylinders (no more than 80 % volume liquid charge).
9. Do not exceed the maximum working pressure of the cylinder, even temporarily.
10. When the cylinders have been filled correctly and the process completed, make sure that the cylinders and the
equipment are removed from site promptly and alt isolation valves on the equipment are closed off.
11. Recovered refrigerant shall not be charged into another refrigerating system unless it has been cleaned and checked.
3.2.2 User maintenance
• Make sure that the ventilation grid is not blocked by any foreign bodies.
• Clean the evaporator (for location see § "5.3 I Dimensions and marking") using a soft brush and a fresh water spray
(disconnect the power cable); do not fold over the metal wings, then clean the condensate drainage line to remove
any impurities that may be blocking it.
• Make sure that the switch box's ventilation grid is clean.
• Do not use a high pressure jet. Do not spray with rain water, salt water or water which is full of minerals.
• Clean the outside of the appliance; do not use any solvent-based products. We can provide you with a specific cleaning
kit as an accessory: the PAC NET, see § "5.1 I Description".
3.2.3 Maintenance to be carried out by a qualified technician
• Please read the safety instructions before performing any of the maintenance operations
described below, see «3.2.1 Safety instructions concerning appliances containing R32
refrigerant»
• Check that the control system is operating correctly.
• Check that the condensates flow correctly when the appliance is in operation.
• Check the safety mechanisms.
• Check the connection of the metal masses to the earth.
• Check that the electrical cables are correctly tightened and connected and that the switch box is clean.
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