Maintenance; Service Mode - Hach CD300 Benutzerhandbuch

Option
Analog Output
Network
Settings

Maintenance

Service mode

Enable Service mode before maintenance tasks and inspections are done. When the Service mode
is enabled, the relay valve and buzzer are deactivated, cleaning stops and measurements data is not
saved.
Enable Service mode before the connections, sensors, cables or the compressed air system are
examined.
1. Select Options in the main menu then push Service mode.
Note: The controller automatically disables Service mode after 1 hour.
2. To examine the analog outputs, select Analog Outputs and set a fixed output current on one of
the outputs. The value can be directly measured at the related analog output.
Note: The fixed output current is deactivated when the user exits Service mode.
Cleaning the controller
Always remove power from the controller before performing maintenance activities.
Note: Never use flammable or corrosive solvents to clean any part of the controller. Use of these solvents may
degrade the environmental protection of the unit and may void the warranty.
1. Make sure the controller cover is securely closed.
2. Wipe the controller exterior with a cloth dampened with water, or with a mixture of water and mild
detergent.
SD card replacement
To update the firmware, replace the Micro SD card. Order a new Micro SD card by the manufacturer.
Replace the Micro SC card as follows:
1. Remove power to the instrument.
2. Open the controller cover. Refer to
3. Replace the Micro SD card. Refer to
4. Close the controller cover.
22 English
Description
Select the analog output 1 or 2 and set the parameters that follow:
• Active: on
• Select the parameter
• Minimum Value (4 mA): Sets the measurement that gives 4 mA at the analog output.
• Maximum Value (20 mA): Sets the measurement that gives 20 mA at the analog
output.
To test the analog output, push Test now.
Sets the network settings.
• Hostname
• Operating mode
• IP address
• Subnet mask
Open the controller cover
Figure
D A N G E R
on page 10.
9.