Yokogawa Single Channel Oxygen Analyzer System ZR22/ZR402 User Manual
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IM 11M12A01-01E-A
8.3 Maintenance for Air Eductor Return
The following maintenance instructions are for the eductor return option only. The eductor and/or
the return piping may plug from time to time. The following is recommended for disassembling the
eductor and the return piping:
Remove power from the ZR22P control box by opening the fuse switch located on the terminal
1.
box, inside of the control box at the adapter tee.
Remove the insulation (if applicable) from the eductor return piping.
2.
Confirm that power has been shut off before proceeding. Check the voltage at terminals 2 and 8.
3.
Ensure that the air supply to the eductor has been turned off.
4.
Remove the air supply from the eductor.
5.
Loosen the band heaters screws.
6.
CAUTION: DO NOT completely remove the screws from
the band heater. Additionally, it is not necessary to remove the wiring from the heater band.
Carefully detach the air eductor from the solenoid. Note: It is not necessary to remove the wiring
7.
from the solenoid.
Remove the fittings that secure the eductor to the piping. Slide the band heater off of the
8.
eductor.