Routine and Preventive Maintenance
The Source Block Assembly _______________________________________________________________
Figure 5-5. ESI probe assembly and source block enclosure
PEEK fitting
Entrance cone
Cone wash nozzle
APCI blank plug
Locking plate
4.
5.
6.
7.
8.
If in APCI mode, change the APCI corona pin (P/N FM101433) with
the APCI blank plug (P/N FM101437), located in the holder in the
source enclosure door.
If the cone wash is in use, switch off the cone wash pump and turn the
cone wash nozzle until it is clear of the entrance cone.
Turn the entrance cone assembly (P/N FM103412) clockwise and pull
forward to remove it.
Remove the cone wash nozzle (P/N FM102521).
Loosen the thumbscrews on the source block and pull out the source
block assembly (P/N FM102573).
Thumbscrews
Source block
Figure 5-5. Removing the source block assembly
5-14
__________________________ MSQ Hardware Manual ____________________________
