YOKOGAWA TB830D, User Manual, Page: 30 / 85

<3. PREPARATION for OPERATION>
3-1
IM 12E04B40-02EN 1st Edition : Mar. 08, 2023-00
3. PREPARATION for OPERATION
After completing piping and wiring, confirm the operation mode and prepare for operation
according to the contents of this chapter.
n
Type of operation mode
There are two operation modes of the instrument: measurement mode and maintenance mode.
l
Measurement mode
This mode is for steady operation.
l
Maintenance mode
This mode is used to perform maintenance work, etc. Always place the instrument in
maintenance mode prior to performing any maintenance tasks such as calibration or
maintenance. From the main screen, set to x to enter maintenance mode.
(The mode can also be switched in detector Menu → Maintenance → Maintenance mode.)
n
Operation in Maintenance Mode
Table 3.1 Operation of Items in Maintenance Mode
Item Operation
Measured value Maint. damping time constant applies
mA Output Hold or output by following the automatic hold setting
Converter menu > Converter setting> mA output setting >Output channels
> Auto hold setting
Contact output When maintenance is set up, the contact is On. Other contact outputs
remain the previous value gained right before the Maintenance turned on.
Other contact outputs remain the previous value gained right before the
Maintenance turned on.
Manual operation Solenoid manual operation is enabled.
detector menu > Maintenance > Valve. Pump To initialize Valve, turn off the
maintenance mode. You can also operate the Solenoid valve from the main
screen.
When the maintenance mode is turned Off, the light source/bulb status
returns to the default status.
Automatic cleaning,
Automatic zero calibration
Not available
3.1 Piping and Wiring Check
Confirm that the piping and wiring have been completed correctly before supplying water or
power.
Refer to “2.1 Piping” and “2.2 Wiring”.
If a sampling system is available, attach the filter element when using the zero-turbidity filter.
Refer to “8.7 Replacing the zero turbidity filter element” for the mounting method.
3.2 Confirming detector condition
Open the cover and set a new desiccant. Close the cover firmly. See “2.3 Desiccant mounting”
for instructions on how to attach the desiccant.
Check those unused cable entries are plugged with inserts.