Hach Polymetron 8810 pH Manuel D'utilisation De Base page 13

Electrocution hazard. Protective Earth Ground (PE) connection is required.
Electrical shock and fire hazards. Make sure to identify the local disconnect clearly for the conduit
installation.
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.
Multiple hazards. Only qualified personnel must conduct the tasks described in this section of the
document.
Install the device in a location and position that gives easy access to the disconnect device and its operation.
The analyzer is factory configured to either 110/120 VAC or 220/240 VAC. Make sure to connect the correct
power supply to the analyzer.
Connect equipment in accordance with local, state or national electrical codes. Obey all codes and
regulations for wiring. Install cables into the instrument enclosure through the supplied cable glands.
Use screened and screen earthed cable for the mains connection. The mains wire specifications are:
diameter between 7 and 9.5 mm, 3 cores, 10 Amps minimum current rating, between 1 mm
(AWG18) and 2.5 mm
connections use screened instrument cable. Use also screen earthed cable for the signal
connections.
Note: Equipment intended for permanent connection to the MAINS must have provision for connection of a wiring
system in accordance with ANSI/NFPA 70, NEC, with CSA C22.1
Make sure that a 2 pole circuit breaker with a minimum breaking capcity of 20 A is installed in the
power line. 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.
When the wiring of the system is completed, do the steps that follow to energize the system:
1. Open the power supply box (No. 12 in
2. Pass the power cable through the cable gland and connect the earth, neutral and live wires to
terminals 1, 2 and 3 respectively as indicated in
2
(AWG14) minimum CSA (Cross Sectional Area). For all other signal
Figure 1
D A N G E R
D A N G E R
W A R N I N G
C A U T I O N
N O T I C E
N O T I C E
on page 6).
Figure 5.
2
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