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Clearing Access to the Source Block Assembly
Removing the Entrance Cone and the Cone Wash Nozzle
Thermo Scientific
To clear access to the source block assembly
1. To open the front door of the MS detector, depress the door latch on the left-side of the
detector as you pull the door forward.
2. Remove the API probe from the probe heater:
a. Remove the PEEK fingertight fitting from the probe.
b. Turn the locking plate clockwise to the open position, and then carefully pull the API
probe out of the probe heater.
CAUTION Exercise care when handling the API probe. The ceramic sleeve of the ESI
probe and the capillaries of both probes are fragile and can be damaged easily.
3. Rotate the black knobs of the probe heater, so that they face away from each other, and
then pull the probe heater out of the source mount. See
4. Store the probe heater in the holder to the left of the source compartment.
5. If your Surveyor MSQ Plus MS detector is set up in the APCI mode, rotate the corona
pin knob downward to its vertical position.
To remove the entrance cone and the cone wash nozzle
1. If you have not already done so, vent the MS detector as described in
LC/MS System for Maintenance"
described in
"Clearing Access to the Source Block Assembly"
CAUTION The corona needle is very sharp. Do not attempt to remove the entrance
cone or the cone wash nozzle before you turn the corona pin knob to its vertical
position. See
Figure
2. Being careful to handle the cone wash nozzle by its base, rotate the cone wash nozzle away
from the entrance cone. See
CAUTION The tip of the cone wash nozzle is very fragile, take care to handle the cone
wash nozzle by its base. See
on
page 80
and clear the access to the source block as
62.
Figure
62.
Figure 66
on
page
5
Routine and Preventive Maintenance
Maintaining the Source Block Assembly
Figure 56
on
page
"Preparing the
on
page
81.
84.
Surveyor MSQ Plus Hardware Manual
74.
81
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