Qualification Of Personnel - Tecumseh AJ2 Série Notice D'installation

Never use the product without first consulting the Safety Data Files, which can be obtained from your refrigerant supplier.
2.2. Scope of application of the standards and norms relating to refrigerating systems which use inflammable fluids
Where authorised by local regulations and provided that the location is suitable, the maximum loads of hermetically sealed systems
running on R290, R1234yf, R455A and R454C are defined in the table below:
Refrigerant according to the standards in
(except for EN 60335-2-40)
R290
R1234yf
R455A
R454C
*For higher loads, please refer to the requirements of the EN 378-1 standard
2.3. Prevention of the formation of potentially explosive zones
The use of inflammable fluids can present a risk of an explosion in the event of a leak. It is therefore appropriate to ensure that the
design of the refrigerating and ventilation system of the compressor does not permit the creation of an explosive zone.

2.4. Qualification of personnel

It is essential that standard EN 378-3 is observed during installation and standard EN 378-4 during maintenance works.
To maintain and repair the installations, personnel must be authorised to handle refrigerants and correctly trained in the handling of
flammable fluids in order to avoid the risk of the formation of an explosive atmosphere.
Consequently, personnel must know the tools, the transportation procedure for the compressor and refrigerant, and the safety
precautions and regulations which apply to maintenance and repair work.
Remove ignition sources while handling flammable refrigerants
2.5. Protection of the electrical terminal of the compressor
The disintegration of the insulation (glass bead) around an electrical power supply terminal of the compressor due to a physical
shock, or extreme heating, could create a hole through which the refrigerant and the oil can escape. Upon contact with a spark, this
mixture could ignite. Any accidental damage to the terminal during operation results in the compressor being scrapped.
The use of a terminal cover (Te-Connect) will protect the three-pole terminal from shocks.
Furthermore, especially when using inflammable fluids, Tecumseh recommends the use of a safety system in order to protect the
users, the service personnel, and the installation. The system will be capable of detecting a current spike which would be likely to
cause the insulation to melt ("pin venting" phenomenon) and if this occurs, will cut the electrical power supply to the compressor.
As the compressor is not equipped with protection in the event of an external fire, it is recommended that protection is fitted to
protect the installation in order to prevent a fire. Adequate purging methods and measures to prevent the admissible limits from
being exceeded (see conditions on the PED label) must also be put in place
The compressors must not be installed in a corrosive or dusty environment.
the EN 60335-2 series
150 g
150 g
150g
150g
according to CEI60335-2-89
500 g
1200 g
1200g
1200g
17
according to EN 387-1: 2017 *
150 g
1700g
2500g
1600g