Hach-Lange CL17 USER MANUAL - Manual (Page 22)

20
Installation
Additionally, electrical and instrumentation standards require a local means of removing
power from the product. The instrument is supplied with a power on/off switch that is
located inside the instrument enclosure. To remove relay power from the
instrument, an external customer-supplied 5A fused switch or a 5A breaker is
required.
In hard-wired electrical applications, the power and safety ground service drops for the
instrument should be no longer than 6 meters (20 feet) unless metal conduit is used to
shield the AC power wiring. The wire should be 18 AWG.
In applications where power cords are allowed by local electrical codes and power surges
and transients are not a great concern, a sealing-type strain relief and power cord with
three 18 gauge conductors (including a safety ground wire) can be used. Refer to
Figure 10 for strain relief assembly. The length of the power cord must not exceed
3 meters (10 feet).
3.8.2 Wiring the instrument
Connect the unpowered wires to the instrument power terminal as follows:
1. Strip the outside insulation of each wire back ¼-inch. Refer to Figure 14 on page 23 .
2. Connect the three wires to the terminal using the information in Table 3 and
Figure 11 on page 21 .
3. Ensure the voltage setting is correct and supply power to the instrument.
Figure 10 Assembling the optional power cord hardware
1 Wall section of the instrument closure
Description Item number
115V Power cord with strain relief 5448800
230V Power cord with strain relief 5448900
Table 3 Terminal wiring information
Wire color code for: Protective earth ground Hot or Ø1 Neutral or Ø2
North America Green Black White
IEC Green with yellow tracer Brown Blue