Hach APA 6000, Руководство по установке

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Wiring for power
D A N G E R
Electrocution hazard. Protective Earth Ground (PE) connection is
required.
D A N G E R
Electrical shock and fire hazards. Make sure to identify the local
disconnect clearly for the conduit installation.
W A R N I N G
Potential Electrocution Hazard. If this equipment is used outdoors or in
potentially wet locations, a
Ground Fault Interrupt device must be
used for connecting the equipment to its mains power source.
N O T I C E
Install the device in a location and position that gives easy access to the
disconnect device and its operation.
Supply power to the analyzer with conduit or a power cable. Make sure
that a circuit breaker with sufficient current capacity is installed in the
power line. The circuit breaker size is based on the wire gauge used for
installation.
For installation with conduit:
• Install a local disconnect for the analyzer within 3 m (10 ft) of the
analyzer. Put a label on the disconnect that identifies it as the main
disconnect device for the analyzer.
• Make sure that the power and safety ground service drops for the
analyzer are 18–12 AWG and the wire insulation is rated for 300 VAC
or higher.
• Connect equipment in accordance with local, state or national
electrical codes.
• Connect the conduit through a conduit hub that holds the conduit
securely and seals the enclosure when tightened.
• If metal conduit is used, make sure that the conduit hub is tightened
so that the conduit hub connects the metal conduit to safely ground.
For installation with a power cable, make sure that the power cable is:
• Less than 3 m (10 ft) in length
• Rated for at least 60 °C (140 °F) and applicable to the installation
environment
• Not less than 18 AWG with applicable insulation colors for local code
requirements
• A power cable with a three-prong plug (with ground connection) that is
applicable to the supply connection
• Connected through a cable gland (strain relief) that holds the power
cable securely and seals the enclosure when tightened
• Does not have a locking type device on the plug
Connect to power
N O T I C E
The instrument is used for a single phase connection only.
N O T I C E
Make sure the power switch is set to off. Dry operation may damage the
analyzer.
Connect power with conduit or a power cable. Refer to Figure 15 and
Table 4 .
Make sure that the safety ground wire is securely connected to the
protective earth ground terminal. Make sure that the metal conduit is
securely bonded to the safety ground wire through the conduit backing
plate.
An AC power cable is not supplied with the analyzer. To order an AC
power cable, refer to
Replacement parts and accessories in the
maintenance manual.
English 15