Tecumseh AJ2 Série Notice D'installation page 20

- Install a device which can detect an over-current at the compressor, in order to prevent a current peak which is likely to
melt the insulation ("pin venting" phenomenon).
- Provide suitable protection which complies with local regulations to prevent the public, the user or any person having
access to the application from damaging the product.
- Also provide suitable warnings regarding the flammable fluids on the entire installation so that the user or any person
having access to the application is aware of the inherent risks due to their presence (provision of standardized icons to
prevent the risk of fire or explosion).
- Put into place a suitable method of warning the user that they must employ a professional to handle the application.
5.1. Maximum admissible working pressure
Tecumseh compressors are designed to operate at a maximum ambient temperature of +46°C. Observe and comply with the specific
regulations to optimise the quantity of refrigerant in the installation and never exceed the maximum discharge pressure
corresponding to the maximum condensation temperature of the compressor's operation.
The compressor housing must not be subjected to temperatures below -35°C; the materials used cannot guarantee sufficient
mechanical characteristics.
5.2. Expansion element
Tecumseh recommends the use of thermostatic rather than capillary expansion elements for negative applications.
5.3. Installation with a view to commissioning
Tecumseh cannot be held liable if installation and maintenance are not carried out in accordance with the instructions and
information provided in this document.
The directives and reglementation in force in the country in which the compressor is installed and the specific rules and regulations
for refrigerant and electrical connections must be observed and complied with.
5.4. Location of the compressor and definition of the refrigerant load
5.4.1. Definition of the refrigerant load
The refrigerant load level must not exceed the quantity which can be stored on the high-pressure side. If migration into the
compressor during shutdown times is likely, or if the load exceeds 1.5 kg, Tecumseh recommends the use of a crankcase heater
and/or a non-return valve on the discharge line.
The return of liquid during transitory periods will be prevented by an anti-hammer reservoir.
The maximum load level of inflammable fluids is defined in Annex C of EN 378-1 by the volume at which the refrigerant system is
operated, it location and its usage type (non-exhaustive).
5.4.2. Location of electrical components which are an ignition source in the event of the use of inflammable fluids A2L, A2, or A3
These components must be installed in a zone which is not potentially inflammable. Tecumseh recommends that they are installed
at height and in a ventilated area.
5.4.3. Location of the compressor
The compressor must not prevent or interfere with the movement of persons or the opening of doors or shutters.
The base onto which the compressor will be installed must be sufficiently resistant (plinth, brackets, wall, etc.). Check that the
compressor level is horizontal and that it is equipped with its silent blocks.
Ensure that the circulation of air around the electrical components is not blocked which is also required to cool the compressor.
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