Embraco UEM Serie Instructions D'installation page 5

• For electrical connection refer to applicable compressor / condensing unit wiring diagram.
• Use compressor / condensing unit in a grounded system only.
• Proper compressor / condensing unit cooling according to specification must be assured.
• For service intervention follow the instructions of application manufacturer.
• Turn off power supply before servicing the compressor / condensing unit.
• Discharge all capacitors before servicing the compressor / condensing unit.
• Remove pressure from both high and low pressure side before removing the compressor /
condensing unit.
• Use tubing cutter to open the refrigeration circuit. Do not use a torch.
• For compressor / condensing unit replacement follow the instructions of the original
equipment manufacturer. Use only with electrical components specified by the
manufacturer.
• On applications where flammable refrigerant is used do not weld the tubes by torch, but
connect the compressor / condensing unit tubes by other means such as lock ring.
• Before energizing the system check the compressor / condensing unit grounding and make
sure the electrical components and covering are fixed properly.
• Connect the equipment only to a power supply with proper ground connection, over current
protection and electrical safety devices.
• Do not use disassembled compressor again.
• Disassembled compressors used with flammable refrigerant may contain certain amount of
refrigerant in the oil.
• Do not mix this oil with other oils and treat it properly due to its flammability risk.
• Before energizing the condensing units that the finger guard of the fan motor is properly
installed.
CAUTIONS
• Compressor / condensing units in the application must be used within a working range
specified by manufacturer.
• Refrigerant going into suction line must be in vapor stage.
• Install the compressor / condensing units with an appliance base plate using specified bolts
and gromments and connect compressor / condensing unit tubes (as specified by
manufacturer) to the corresponding line tubes of the application.
• Give special attention to the correct welding or other forms of connecting joints in the
system to avoid the possibility of leaks.
• Use a leak detector suitable for the respective refrigerant to guarantee the maximum
efficiency in controlling leaks.
• Avoid damaging of the compressor / condensing unit label during the assembly process.
• Good refrigeration practice suggests system evacuation from both the low and the high side,
achieving a minimum level of 0,14 mbar (100 µHg), with a non-condensable
value of less than 0,3%.
EN
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