Hach LXV525.99A15551, User Manual

Page: 18 / 64

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.
W A R N I N G
Electrocution hazard. The local disconnection means must disconnect all the electrical current-
carrying conductors. Mains connection must keep supply polarity. The separable plug is the
disconnect means for cord connected equipment.
W A R N I N G
Electrical shock and fire hazards. Make sure that the user-supplied power cord and non
‐
locking plug
meet the applicable country code requirements.
W A R N I N G
Explosion hazard. This manual is only for installation of the unit in a non-hazardous location. For
installation of the unit in hazardous locations, use only the instructions and approved control drawing
provided in the hazardous location installation manual.
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.
The controller can be purchased as either a 100-240 VAC powered model or a 18-28 VDC powered
model. Follow the appropriate wiring instructions for the purchased model.
Supply power to the instrument 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 instrument within 3 m (10 ft) of the instrument. Put a label on the
disconnect that identifies it as the main disconnect device for the instrument.
• Rated for at least 90 °C (194 °F) and applicable to the installation environment
• For permanent connections use only solid wires. Use cable dimensions between 0.75 to 1.5 mm
2
(18 to 16 AWG). Flexible wires must have a crimped ferrule or pin type terminal on the end.
• 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 safety ground.
• The DC power source that supplies power to the DC controller must maintain voltage regulation
within the specified 18-28 VDC voltage limits. The DC power source must also provide adequate
protection against surges and line transients.
For installation with a power cable, make sure that the power cable is:
• Less than 3 m (10 ft) in length
• Rated sufficient for the supply voltage and current.
• Rated for at least 90 °C (194 °F) and applicable to the installation environment
16 English