Yokogawa Multi Channel Oxygen Analyzer System ZR22/AV550G - Manual (Page 197)

IM 11M12D01-01E 11-3
11. Inspection and Maintenance
Channel Card
CELL, TC, CJ
F11.2E.eps
Detector
Power supply wire for Heater
Averaging Converter
Power Supply Circuit
Hot Swap Switch Mechanical Relays
Fig. 11.2
<Procedure>
1) On the basic panel display touch the Setup key. The Execution/Setup display will
appear.
2) Use the Cursor key to move the cursor to Maintenance. Touch the Enter key.
3) On the Maintenance display, select Channel Card Power. Touch the Enter key. A
display shown in Figure 11.3 will appear.
4) On the Channel Card Power display, select the channel of a detector to be discon-
nected for inspection or maintenance. Touch the Enter key.
5) A dropdown menu (Disable/Enable) will appear. Select Disable and touch the Enter
key. Make sure that all status lamp(s) of disabled channel(s) have turned off.
Enter
Ch1 : ZR22G
᭜
Ch2 : Enable
᭜
Ch3 : Enable
᭜ Ch4 : Enable
᭜ Ch5 : Enable
᭜
Ch6 : Enable
᭜
Ch7 : Enable
᭜ Ch8 : Enable
F11.3E.EPS
Disable
Channel card power
Figure 11.3 Channel Card Power (Hot Swap) Display
DANGER
Before the inspection or maintenance of a detector, make sure that the power has been
turned off by measuring the voltage of the heater terminal in the terminal box of the
detector for more than two seconds with a voltmeter.
CAUTION
The state (Enable/Disable) of the hot swap function is stored even after the power switch
of the averaging converter is turned off. When the power switch of the averaging
converter is turned on, power is not supplied to the disabled channel(s).