Cleaning The Entrance Cone And The Cone Wash Nozzle - Thermo Scientific Surveyor MSQ Plus Hardware Manual

Cleaning the Entrance Cone and the Cone Wash Nozzle

Thermo Scientific
The cone wash nozzle requires cleaning only if it becomes blocked.
To clean the entrance cone and the cone wash nozzle
1. Use a 2.5 mm flat blade screwdriver to remove the O-ring on the back of the entrance
cone. See Figure 64. For O-ring part numbers, see
Figure 64. Backside of the entrance cone, showing its O-ring (BS010)
2. Sonicate the entrance cone 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.
3. Using a microscope set to 30x magnification, inspect the inside of the cone to ensure
cleanliness. See Figure
Figure 65. View of the center of the entrance cone
CAUTION Because solvent and acid can damage them, do not sonicate O-rings.
CAUTION Take care when handling the cone wash nozzle. Its tip is extremely fragile.
O-ring, BS010
6.07 mm ID × 1.78 mm THK
65.
Orifice in the center of the entrance cone
5
Routine and Preventive Maintenance
Maintaining the Source Block Assembly
Figure 81 on page 110.
Surveyor MSQ Plus Hardware Manual 83