7
Performance
Please refer to the Technical Data Sheets for information on compressor performance.
Voltage and range of operation
The voltage range of the rotary compressors corresponds to the standard ranges defined by Tecumseh
Europe. See the General Catalogue for more information.
Start-up should never be carried out when the electrical cover has been removed.
1.4.1 Single phase
Single phase compressor motors are two pole asynchronous and they are designed to be used with
different types of starting method depending on the application (PSC, CSR, CSIR).
Please ensure the starting mode follows that specified on the Technical Data Sheet for each product.
We recommend the use of components specified by Tecumseh Europe.
For wiring instructions, follow the diagram supplied with the compressor.
Ensure that the start and run windings are connected correctly otherwise damage to the motor will
result (see label below).
1.4.1.1 Motor protection
The motor is protected by an externally mounted temperature and current sensitive overload. It is impe-
rative that the overload protector is connected as it cuts off the power supply to the compressor if a fault
occurs. For wiring instructions, follow the wiring diagram supplied with the compressor.
1.4.2 Three phase
All rotary compressors which have a model number beginning with a letter ‘T’ are equipped with a three
phase motor.
Three phase motors are wired in star, and the resistance measured between two terminals corresponds
to the resistance of that coil.
Ensure that each compressor conforms to the information given on the Technical Data Sheet.
We recommend the use of components specified by Tecumseh Europe.
For wiring instructions, follow the diagram supplied with the compressor.
1.4.2.1 Phase control
Care should be taken when connecting three phase rotary compressors to ensure that the direction of
rotation is correct as rotation occurs in one direction only.
ATTENTION: If the rotational direction is incorrect, the compressor will not refrigerate and the life of the
product will be reduced. However, a short test period will not cause damage.
To ensure correct rotation we recommend the use of our phase detector reference number 8 535 136,
which is listed in our Spare Parts and Accessories Catalogue.
1.4.2.2 Protection of the motor
The motor is protected from overheating by an external overload protector which must be connected.
This device has a single contact and cannot be wired into the three phase electrical supply of the com-
pressor (a three phase motor can only operate with a minimum of 2 active phases). The protector should
therefore be wired into the control circuit of the compressor so that it cuts the power supply if a fault
occurs. For wiring instructions, see the electrical diagram supplied with the compressor.
For further information on protecting the compressor against high current, please contact the technical
application department at Tecumseh Europe.
1.3
1.4
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