Source pressure test leak warning on a Xevo Instrument - WKB9958

SYMPTOMS

• Source pressure test leak warning message
• Source pressure test failed message

ENVIRONMENT

• Xevo QTof
• Xevo TQ
• Xevo TQ-S
• Xevo G2 QTof/Tof
• Xevo G2-S QTof/Tof
• Xevo G2-XS QTof/Tof
• Xevo G3 QTof
• Xevo TQ-S micro
• Xevo TQ-S cronos
• Xevo TQ-XS
• Xevo TQ-Absolute

CAUSE

Loose or poorly fitted exhaust tubing between instrument and trap bottle

Loose or poorly fitted fitting (e.g. 4 mm Legris PushFit elbow below the isolation valve)

Trap bottle lid needs to be tightened more

FIX or WORKAROUND

1. Inspect the Source exhaust trap bottle during the source pressure test and search for location of potential nitrogen leak (e.g. hissing noise).
2. Check that all fittings are correctly fitted to the trap bottle (see the "additional information" section here below).
3. Remove and reinstall the different tubing.
4. Rerun the source pressure test:

Open and close the source door.

or

Run the source pressure test via the software in use.

ADDITIONAL INFORMATION

Old design of source exhaust trap bottle:

New design of source exhaust trap bottle (shipping from 2022 with Xevo TQ Absolute and Xevo G3 QTof):