Commissioning; Before Turning On The Power; Wire Connection Tightness Checks; Climatic™ Confi Guration - Lennox BAC 030 SNM 3M Installation, Operating And Maintenance Manual

COMMISSIONING

WARNING: commissioning must only be carried out by trained refrigeration engineers whom qualifi cation
certifi cates are compliant with the local regulation

Before turning on the power

WARNING: ensure that the power supply includes 3 phases with no neutral
Ensure that the power supply between the building and the unit meets local authority standards and that the cable specifi cation satisfi es
the start-up and operating conditions displayed on the name plate.

Wire connection tightness checks

WARNING: check the wire connection tightness
Check the following wire connections for tightness:
• Main switch connections,
• Mains wires linked to the contactors and circuit breakers
• Cables in the 24V control supply circuit.
CLIMATIC™ confi guration
See CLIMATIC™ section

Powering the unit

Power up the unit by closing the isolator switch (if fi tted).
At this point the blower should start unless the CLIMATIC™ does not energise the contactor. Once the fan is running, check the rotation
direction. Refer to the rotation arrow located on the fan.
The fans and compressors direction of rotation is checked during the end of line test. They should therefore all turn in either the right
or wrong direction.
WARNING: a compressor rotating in the wrong direction will fail shortly.
If the fan turns in the wrong direction (the right direction is shown below), disconnect the
main power supply to the machine at the building's mains switch, reverse two phases
and repeat the above procedure.
Close all circuit breakers and power up the unit.
If now only one of the components rotates in the wrong direction, disconnect the power
supply at the machine's isolator switch (if fi tted) and reverse two of the component's
phases on the terminal within the electrical panel.
Check the current drawn against the rated values, in particular on the supply fan.
If the readings on the fan are outside the specifi ed limits, this usually indicates excessive
air fl ow which will affect the life expectancy. In this case reduce rpm using eDrive™.
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BALTIC-IOM-0412-E / Service manual