Hach SP-510 Manuel D'utilisation page 15

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
Note: The fuses are approved for North American and European use and do not need to be changed with the
voltage.
4.3.5 Connect the alarm relays
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.
Figure 11 shows the alarm relay contacts connected to the terminal strip with normally open and
normally closed terminations. Terminals are unpowered and rated for 5 A at 100–240 VAC resistive
load.
The relay connector accepts 18–12 AWG (0.75–1.0 mm
operates with the application. A wire gauge less than 18 AWG (0.75 mm
Figure 11 Alarm connections
Terminal block
J7
4.4 Install the buffer solution
Buffer solutions are formulated at the factory and are ready to install without preparation. Put the
bottle in the instrument as shown in
manufacturer's website.
4.5 Install the indicator solution
Indicator solutions are formulated at the factory and are ready to install without preparation. Put the
bottle in the instrument as shown in
manufacturer's website.
C A U T I O N
Table 2 Relay wiring
Terminal 1
COM Normally open (NO)
Figure 12 on page 16. Additional information is available on the
Figure 12. Additional information is available on the
Figure 10
2
) wire. Select the necessary wire gage that
2
Terminal 2
on page 14.
) is not recommended.
Terminal 3
Normally closed (NC)
English 15