Xevo TQ-XS Sensitivity gradually decreases - WKB93682

SYMPTOMS

• Xevo TQ-XS Sensitivity gradually decreases.
• As the time between analysis increases, the sensitivity increases, and it declines in continuous analysis. (MS operation is always ON.)

ENVIRONMENT

• Xevo TQ-XS
• UniSpray

CAUSE

Dirty MS divert valve.

FIX or WORKAROUND

1. Confirm diagnosis by bypassing diverter valve:If that restores stable sensitivity, replace Diverter Valve (700004188)

ADDITIONAL INFORMATION