RKI Instruments Digester Gas Monitor - Manual (Page 91)

Digester Gas Monitor Operator’s Manual Replacing the Hydrophobic Filter • 85
the system.
Replacing the Hydrophobic Filter
This section describes how to replace the hydrophobic filter.
1. Turn off the Digester Gas Monitor.
2. Turn off or unplug power to the Digester Gas Monitor.
3. Open the housing door of the Digester Gas Monitor.
4. Turn the regulator knob all the way counterclockwise to close the regulator output.
5. Locate the hydrophobic filter. It is just to the left of the main circuit board.
6. Grasp the hydrophobic filter and pull it out of its metal clamp.
7. Grasp the push fitting at the bottom of the hydrophobic filter and push down on the
collet that connects to the rigid tubing coming from the filter and pull the fitting away
from the filter. Repeat the process with the fitting at the top of the hydrophobic filter
and remove the old hydrophobic filter.
8. The replacement hydrophobic filter has rigid tubing at each end. Push the ends of the
replacement hydrophobic filter into the push fittings on the flow system.
9. Place the new hydrophobic filter back into the metal clamp. The arrow on the
hydrophobic filter should be pointing up.
10. Turn the regulator knob clockwise to set the sensor flow to 3 SCFH when you restart
the system.
Push
FL
O
W