Tecumseh CAJ Serie Instrucciones De Instalación página 6

3.2. Specifications
The housing of the compressors in the 'AJ' family is subject to the low pressure of the refrigeration system.
In line with the PED and in order to always ensure the best level of quality of its products, Tecumseh tests each compressor on an
assembly line at a pneumatic pressure which is greater than or equal to the requirement 1.1 x Ps as per Annex C 1.3.2 of standard NF
EN 14276-1, whichever refrigerant is indicated.
The maximum internal free volume of the AJ compressor is 4.5 liters.
For information: 1.1 * Ps (46°C sat) = 17.2 bar ABS for the R290.
Additional explosion tests are also performed periodically.
4. Transport – handling:
Ex-works, the compressor is filled with oil and nitrogen (0.3 to 0.5 bar). It does not contain refrigerant on delivery.
For further information on delivery of the compressors, please see your terms and conditions of sale. Check that the equipment is in
good condition and is free from defects on receipt (correct external appearance, no impact or deformation), in particular on the
connection terminal.
Never handle the compressor by its pipes or tubes, by the Te-Connect or by the power supply cable. Use the plinth provided for this
purpose. See our technical documentation for further information on storage positions and authorized transportation.
The recommendations for the transportation of systems filled with refrigerant fluids are the responsibility of the manufacturer of
these systems.
5. Recommendations associated with the use and installation of a compressor in a refrigeration system:
In the case of operation with inflammable fluids, the installation must be designed on the basis of a risk analysis, with the systematic
provision of a method of protection which is specially adapted to the increased risk of explosion. Standard EN1127-1 can be used to
perform this risk analysis. This standard stipulates how to assess certain risks (non-exhaustive list).
- To avoid any risk of explosion of the HP circuit components, provide a discharge valve in the LP circuit (no venting to the
exterior and no blockage possible between the condenser/discharge valve reservoir).
- 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. This temperature must not be
exceeded. Observe and comply with the specific regulations to optimize the quantity of refrigerant in the installation and never
exceed the maximum discharge pressure corresponding to a temperature of 63°C saturated (for R290 and R404A) or 70°C saturated
(for R134a and R1234yf).
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