How do you replace the pinch valve on an ACQUITY QDa Mass Detector? - WKB273300

ENVIRONMENT

• ACQUITY QDa Mass Detector

ANSWER

Part number 700011173

Removing the source exhaust valve

1. If tubing is in a rear configuration, disconnect the source exhaust tubing and rotate the elbow connector to clear the path for removing the source exhaust valve from the enclosure.
2. Unscrew and remove the four retaining screws from the valve grip panel using a 5-mm hex wrench.
3. Hold the grip panel and pull to slide the valve out of the enclosure.
Tip: If the source exhaust valve does not immediately release from the enclosure chamber, examine it for corrosion, waste buildup, or other blockage. If possible, remove any visible obstruction and apply reasonable force to release the valve from the enclosure.

Inserting the source exhaust valve

1. To gain access for inserting the valve into the enclosure, remove any obstructive exhaust tubing and rotate the elbow connector of the source exhaust tube clear of the path.
2. Hold the source exhaust valve by the grip panel, orienting the curved edge of the panel toward the left.
3. Slide the valve into the enclosure and carefully slot the grip panel keyway over the corresponding alignment key at the top rim of the enclosure entrance.

 

ADDITIONAL INFORMATION