Thermo Scientific Surveyor MSQ Plus, Hardware Manual

Page: 100 / 148

5
Routine and Preventive Maintenance
Maintaining the Source Block Assembly
84 Surveyor MSQ Plus Hardware Manual Thermo Scientific
4. If the cone wash nozzle requires cleaning, remove its O-ring, and then sonicate the nozzle
in 100% methanol. If methanol does not remove the contamination, sonicate the cone in
a 10% v/v aqueous solution of formic acid, rinse with distilled water, and then rinse with
100% methanol.
For O-ring part numbers, see Figure 81 on page 110 .
Figure 66. Cone wash nozzle assembly
5. If you removed the O-rings for the entrance cone and the cone wash nozzle, re-install the
O-rings.
6. Depending on whether the internal components of the source block need cleaning, do
one of the following:
• If the internal components of the source block assembly do not need cleaning, go to
step 7 .
• If the internal components of the source block assembly need cleaning, go to the next
procedure, Removing the Source Block Assembly .
7. Holding the cone wash nozzle by its base, insert it into the source block, and then turn
the nozzle to the right. See Figure 62 on page 82 .
8. Insert the entrance cone into the source block, and then turn the entrance cone
counter-clockwise until it locks in place. See Figure 62 .
9. Remove the lint-free cloth from the bottom of the source enclosure.
10. Take the probe heater out of its holder. Ensure that the knobs of the probe heater are
facing away from each other, and then insert the probe heater into the probe mount. See
Figure 56 on page 74 .
Tip Wetting an O-ring with 100% methanol makes it easier to install.
O-ring, BS007, 3.68 mm ID × 1.78 mm THK
Fragile tip