How to remove the QDa or RDa pumping block - WKB52382

OBJECTIVE or GOAL

Removing the QDa pumping block (700009678) or RDa pumping block to clean the Stepwave and front-end optics. 

ENVIRONMENT

• ACQUITY QDa Mass Detector
• ACQUITY RDa Detector

PROCEDURE

1. Refer to the "Cleaning the source components" section in the Operators and Maintenance Guide for QDa or RDa
2. Obtain the QDa/RDa Pumping block removal tool 700013840.
3. Remove the Source Enclosure from the instrument
4. Remove the sample cone.
5. Use the 3 mm hex wrench to remove the four screws which secure the pumping block to the instrument
6. Insert the Pumping block removal tool and carefully pull the pumping block
   
   
    
7. Tip: If the pumping block sticks towards the gasket (seal), apply some around the edges of the pumping block.
8. Wiggle the assembly free.

ADDITIONAL INFORMATION

If the pumping block removal tool is unavailable, a long-handle screwdriver can be used to provide leverage

1. Place a long-handle screwdriver in the preformed grove on the pumping block.
2. Brace the end of the screwdriver on the front panel.
3. With leverage, carefully wiggle the pumping block to free it from theinstrument.
   
   
4. Attention:
   
   Don't insert tools in between the pumping block and the gasket (seal). It will damage the gasket.
   
   Do not use the Ion Block as a gripping point or lever to remove the pumping block. This can cause damage to the Ion block inserts which can lead to vacuum problems.