Appi/Apci Source-Replacing The Appi Lamp Drive Seals; Removing The Appi Lamp Drive Assembly Seals - Waters Xevo TQ MS Operator's, Overview And Maintenance Manual

APPI/APCI source—Replacing the APPI lamp drive seals
Warning:
the APPI lamp drive assembly O-rings listed below must be
renewed at intervals not exceeding one year, exactly as described
in this section.
The following APPI lamp drive assembly O-rings must be renewed at
intervals of no greater than one year:
• UV lamp bulb sealing O-ring
• Mounting shaft O-rings
• UV lamp mounting flange O-ring
An automatic pressure test is performed each time the source-enclosure is
Tip:
closed and when the instrument starts.

Removing the APPI lamp drive assembly seals

Required materials
• Chemical-resistant, powder-free gloves
• 2.5-mm Allen wrench (from storage recess inside the source door)
• Small Phillips (cross-head) screwdriver
• 20-cm (8-inch) length of 4-mm nylon tube
• O-ring removal kit
• The mounting-shaft insertion tool
• A suitable clear working area on a bench
• A soft cloth or mat to protect the source enclosure window as it is laid on
its face
APPI/APCI source—Replacing the APPI lamp drive seals
To ensure the integrity of the source exhaust system,
February 11, 2013, 71500130002 Rev. D 185