Electrical Connections; Servicing And Maintenance - Carrier 30AW Installation Instructions Manual

2.4 - electrical connections

All field electrical connections are the responsibility of
the installer.
DANGER
Electrical shock can cause severe personal injury or
death. These operations are carried out by qualified
personnel only.
WARNING
• This unit complies with Machinery Directive (2006/42/
EC), electromagnetic compatibility (2004/108/EC)
and pressure equipment (EEC/97/23) Directives.
• To avoid electric shock or fire make sure these
operations are carried out by qualified personnel only.
• Ensure that national safety code requirements have
been followed for the main supply circuit.
• Follow all current national safety code requirements.
• Ensure that a properly sized and connected ground
wire is in place.
• Check that voltage and frequency of the mains power
supply are those required; the available power must
be adequate to operate any other possible appliances
connected to the same line.
• Check that the impedance of the mains power supply
is in conformance with the unit power input indicated
in the rating plate of the unit (EN 61000-3-12).
• Make sure that properly sized disconnecting and
safety switches are installed closed to the unit.
• The disconnection devices from the mains supply
must allow full disconnection under the conditions
provided for by overvoltage class III.
CAUTION
• Connect the connecting cable correctly. If the
connecting cable is connected in a wrong way, electric
parts may be damaged.
• Connection to the mains supply is of the Y type;
therefore, the cable must only be replaced by the
technical support in order to prevent any risk.
• Use the specified cables for wiring and connect them
firmly to the terminals.
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WARNING
• Be sure to provide grounding; inappropriate
grounding may cause electric shock.
• Do not connect ground wires to gas pipes, water pipes,
lightning rods or ground wires for telephone cables.
DANGER:
Do not modify this unit by removing any of the safety
guards or by by-passing any of the safety interlock
switches.
Contact the qualified service if one of the following
events takes place:
• Hot or damaged power supply cable;
• Unusual noise during operation;
• Frequent operation of the protection devices;
• Unusual smell (such as smell of burning).

2.5 - Servicing and maintenance

CAUTION
• Ensure adequate personal protective equipment is
used.
• Extraordinary maintenance operations must be
carried out by specially trained personnel.
Disconnect the mains power supply prior to any
maintenance operations or prior to handling any
internal parts of the unit.
CAUTION
• This equipment contains refrigerant that must be
disposed of in a proper manner.
• When disposing of the unit after its operational life,
remove it carefully.
• The unit must then be delivered to an appropriate
disposal centre or to the original equipment dealer for
proper environmentally compatible disposal.