Emerson PN-51-T56 Debubbler and Measuring Chamber, Cleaning the sensor, Cleaning the orifice

Instruction Manual	Clarity II T56
PN-51-T56	May 2012

8.3Debubbler and Measuring Chamber

8.3.1Cleaning the sensor

1.Turn off the sample supply to the debubbler.

WARNING

BEFORE DISCONNECTING THE SAMPLE AND DRAIN LINES OR REMOVING THE SENSOR, be absolutely certain the process pressure is reduced to 0 psig and the process temperature is at a safe level.

2.Remove the sensor and put it in a safe place. The calibration cup is a good place to store the sensor.

3.Loosen the small drain plug in the base plug and allow the sample in the debubbler to drain out. See Figure 8-4. Replace the drain plug.

4.Unscrew the upper and lower caps. Be careful not to lose the O-rings.

5.Use a stream of water, a brush, or a rag to flush and clean out the inside of the debubbler and measuring chamber.

6.Inspect the O-rings for signs of damage and replace if necessary. The part number for the O-ring (one each) is 9550316.

7.Replace the upper and lower caps.

8.Replace the sensor.

8.3.2Cleaning the orifice

1.Turn off the sample to the debubbler.

2.Disconnect the drain line. Unscrew the drain fitting from the orifice; then unscrew the orifice from the debubbler body. See Figure 8-4.

3.Use a stream of water to flush out any residue accumulated in the orifice. Direct the stream of water counter to the normal flow through the orifice.

4.If the material plugging the orifice cannot be removed with flushing, use a toothpick or a stiff wire to push out the obstruction. Push counter to the normal flow through the orifice.

5.Reinstall the orifice and reconnect the drain line. Turn on the sample flow.

6.If the blockage cannot be removed or the orifice is damaged during cleaning, replace the orifice (PN 33947-00).

Maintenance 29