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REV. A 1 OF 4
Replacing the 2424 Nebulizer
The pneumatically controlled nebulizer converts solvent flow to an aerosol. There are two
nebulizer configurations:
• High-flow for solvent flows of 0.3 to 3.0 mL/min
• Low-flow for solvent flows of 0.005 to 0.5 mL/min
When to Replace
• If the nebulizer is damaged
• If your application requires a higher or lower flow rate
Parts Required
• High flow nebulizer, # 205000458
• Low flow nebulizer, # 205000459
Tools Required
• 5/16-inch open-end wrench
Preparation
1. Before performing this procedure, stop solvent flow to the system, then turn off gas
flow.
2. Always wear powder-free gloves or finger cots when handling the nebulizer to
prevent contact with residual solvents.
Replacing the 2424 Nebulizer
REV. A 2 OF 4
Removing the Old Nebulizer
1. Turn the detector off, then disconnect the power cord.
CAUTION: IF YOU USED THE NEBULIZER HEATER, WAIT 30 MINUTES FOR THE NEBULIZER
TO COOL BEFORE TOUCHING IT.
2. Remove the left front cover.
3. If a column or second detector is connected to the system, disconnect the solvent
inlet tubing from the front of the nebulizer as follows:
a. Use the 5/16-inch wrench to loosen the compression screw that holds the inlet
tubing in place.
Figure 1 - Removing the Compression Screw
b. Remove the solvent inlet tubing from nebulizer.
4. Push in the quick-disconnect tubing fitting on the right-hand side of the nebulizer, and
pull out the gas inlet tubing.
Figure 2 - Removing the Gas Inlet Tubing
Replacing the 2424 Nebulizer
REV. A
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