Routine and Preventive Maintenance
_______________________________________________________________ The Source Block Assembly
The Source Block Assembly
The source block assembly can be removed from the instrument (see page 5-
12) and disassembled into its component parts for cleaning. Typically, the
entrance cone needs to be cleaned most frequently because it becomes dirty
with use over a long period. The cone can be reached without the need to
remove the source block from the instrument.
WARNING.
Allow the source block and probe heater assembly to cool
before carrying out any maintenance.
Cleaning the Entrance Cone
APCI corona pin
Cone wash nozzle
Probe
Figure 5-4. Exposing the entrance cone
1.
2.
3.
4.
Vent the instrument if it is currently under vacuum. Right-click on the
server and choose
Vent
.
Remove the PEEK fitting from the APCI or ESI probe assembly, turn
the locking plate clockwise into the open position, and remove the probe
assembly. See ESI Probe Removal or APCI Probe Removal.
If the cone wash is in use, switch the cone wash pump off and turn the
cone wash nozzle until it is clear of the entrance cone.
If in APCI mode, change the APCI corona pin with the APCI blank plug
(located in the source enclosure door).
____________________________MSQ Hardware Manual ___________________________
5-11
