Yokogawa Multi Channel Oxygen Analyzer System ZR22/AV550G - Manual (Page 181)

IM 11M12D01-01E 10-19
10. Other Functions
10.5 Blowback
This section explains the parameter settings for performing blowback.
10.5.1 Mode
There are three modes of blowback operation: no function, semi-automatic, and auto-
matic. Blowback is not performed when the mode is set to No Function. In Semi-auto
mode, blowback can be started by key operation on the display or by a contact input
signal, and then sequentially performed at a preset blowback time and hold time. In
Auto mode, blowback is automatically performed at preset intervals. For Semi-auto or
Auto modes, blowback is performed one channel at a time until all channels have been
covered. The following restrictions apply:
* When [No function] is selected:
Blowback is not performed
* When [Semi-auto] is selected:
Semi-auto blowback can be performed. (Blowback does not start at Auto blowback start
time.)
* When [Auto] is selected:
Blowback can be performed in either Auto or Semi-auto mode.
<Setting Procedure>
1) From the basic panel display, touch Setup key; on the Execution/Setup display which
appears, select [Maintenance].
2) On the [Maintenance] display, select [Blow back setup] and the Mode selection pull-
down allows you to select between [No function], [Semi-auto] and [Auto] (see Fig.
10.23).
Enter
F75E.EPS
Mode: Auto
᭜ Hold time: 1 0 min 0 0 s
᭜
Blow back time:
3 0 min 0 0 s
Blow back setup
No function
Semi-auto
Auto
Fig. 10.23 Mode Selection