Hach 5410001, User Manual

Page: 16 / 30

3.3.3 Wiring for power
To connect the instrument to power, refer to Figure 10 and Table 1 .
Figure 10 Power connection
1 Voltage switch (in 115 V position) 3 AC power connector
2 Voltage switch (in 230 V position) 4 Fuses (F1 and F2)
Table 1 Terminal wiring
Wire color code Protective earth
ground
Hot or Ø1 Neutral or Ø2
North America Green Black White
International
electrotechnical
commission (IEC)
Green with yellow line Brown Blue
3.3.4 Select the voltage
N O T I C E
To prevent serious damage to the instrument, make sure that the line voltage is set correctly. Refer
to
Figure 10 on page 14.
The instrument is set to 115-volt operation at the factory. To change the line voltage to 230-volt
operation, slide the voltage switch to the 230 V position. Refer to
Figure 10 on page 14.
Note: The fuses are approved for North American and European use and do not need to be changed with the
voltage.
3.3.5 Connect the alarm relays
C A U T I O N
Fire hazard. Relay loads must be resistive. Always limit current to the relays with an
external fuse or breaker. Obey the relay ratings in the Specifications section.
The current to the relay contacts must be 5 A or less. Make sure to have a second switch available to
remove power from the relays locally in case of an emergency or for maintenance. Power can be
removed with an external switch and a 5 A fuse or with a switched 5 A circuit breaker.
14 English