12 | Analyzer Installation
7070iX TRO Analyzer
Figure 7. Terminal Block Interconnections
Wiring
Instrument power requirements are 100 to 240 VAC,
50/60 Hz nominal and the wiring of the instrument is the
responsibility of the installer. However, Thermo Fisher
Scientific recommends the following:
•
All wiring must be made in accordance with current
national, local electric codes and safety regulations.
•
Due to a close proximity to water, it is strongly
recommended to use separate power circuit with
dedicated Class A GFCI (Ground Fault Circuit Interrupt)
circuit breaker/disconnecting device, with appropriate
voltage and current ratings.
•
It is recommended to use shielded power cable, with 3
conductors 18 AWG minimum including ground
conductor.The ground conductor wire free length should
be longer than the AC L (hot) and AC Neutral wires.
•
The Orion 7070iX Total Residual Oxidant Analyzer ground
connection can be made redundant through double
grounding, either by doubling wires or using mounting
hardware to electrically attach the instrument to
grounded substrate. In case of redundancy provided by
mounting hardware, the primary grounding must be done
with at least a 10 AWG dedicated wire conductor.
•
Use of a grounded conduit for the power cable is
recommended.
•
For all wiring details of the instrument and sensors, see
Wiring Diagram
.
CAUTION:
The analyzer is intended for use only
with single-phase power. The analyzer is not
equipped with a power switch, therefore a circuit
breaking device is required such as a circuit
breaker/disconnecting device. The circuit breaker
must conform to local safety standards and
codes. The circuit breaker must be fitted before
the final installation, prior to connecting AC
power to the Analyzer. The circuit breaker must
be in close proximity to the analyzer and within
reach of the user and must be marked clearly as
the disconnected device for the analyzer. ALL
CONDUCTORS NEED TO HAVE MINIMUM
INSULATION RATING OF 75 °C.
