Hach 9525sc DCCP System Manuel De L'utilisateur page 13

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.
Electrical shock and fire hazards. Make sure that the user-supplied power cord and non‐
locking plug meet the applicable country code requirements.
Connect power to the controller(s) with electrical conductors and conduit. Do not use a power cord.
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. Install the device in a location
and position that gives easy access to the disconnect device and its operation.
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.
• Make sure that the electrical conductors for the power and safety ground service drops for the
instrument are a minimum of 3.31 mm
(14 AWG) (for 220 V) and the wire insulation is rated for 300 VAC or higher and 60 °C (140 °F)
minimum.
• 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 to keep the NEMA 4x rating of the instrument.
• 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.
3.3.4 Connect the instrument to power
Connect power to the electrical enclosure. Refer to
After the wires are connected, tighten the conduit fitting, close the electrical enclosure and tighten the
screws.
Notes:
• At illustrated step 3, cut an opening in the top or bottom of the electrical enclosure for the conduit.
• At illustrated step 4, install a conduit fitting in the opening to keep the enclosure rating of the
instrument (NEMA 4x).
• At illustrated step 6, make sure that the free length of wire conductors for the electrical enclosure
is a minimum of 150 mm (6 in.).
For electrical safety, the protective earth ground wire (G) must be at least 0.5 inches longer than the
Line (L) and Neutral (N) wires. Make sure that each wire goes through the applicable cable clamp as
shown in Figure 6.
W A R N I N G
W A R N I N G
2
(12 AWG) (for 110 V) and a minimum of 2.08 mm
Table 1 and the illustrated steps in
2
Figure 6.
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