Qualification Of Personnel - Tecumseh CAJ Serie Instrucciones De Instalación

Where authorized by local regulations and provided that the location is suitable/adapted, the maximum loads of the compressors
running with R290 or R1234yf are defined in the table below:
Refrigerant
R290
R1234yf
LFL: Lower Flammability Limit in air at an ambient temperature
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 work.
Only qualified professionals are authorized to perform work on the application.
To maintain and repair the installations running on R290 and R1234yf, the service and maintenance personnel must be correctly
trained in the handling of inflammable refrigerants 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.
Never use a source of ignition while handling the refrigerants R290 and R1234yf.
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.
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.
3. Specifications – Identification marking of compressors in the AJ range
CAJ or TAJ compressors followed by the letter 'P' are designed for installation in parallel, and those followed by the letter 'D' are
installed in pairs (duo).
3.1. Serial and designation label:
Only T/CAJ ****U compressors are approved for category II according to the Pressure Equipment Directive (PED) 97/23/EC.
Labels in category II contain additional information (*):
according to the standards in the EN 60335-2
series
(except for EN 60335-2-40)
150 g
150 g
3
according to EN 378-1 / ISO 5149
3
20%*LFL = 7.6 g/m
(ceilings defined in the standards)
3
20%*LFL = 57.8 g/m
(ceilings defined in the standards)