EASY-nLC Series Troubleshooting and

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EASY-nLC Series Troubleshooting and | Manualzz

4

Routine Maintenance

Replacing an Inline Filter for the EASY-nLC 1000 Instrument

6. Do one of the following:

• For a solvent-side check valve, reconnect the solvent inlet line.

• For a waste-side check valve, reconnect the waste line.

7. Mount the right side panel to the instrument housing. Then, with a #2 Phillips head screwdriver, secure the panel by rotating the three captive screws a quarter-turn clockwise.

8. Run the Purge Solvent script for the pump associated with the replaced check valve, and monitor the flow from the solvent bottle when the pump is filling and the flow to the waste beaker when the pump is emptying (see

“Prepare – Purge Solvent” on page 32 ).

Replacing an Inline Filter for the EASY-nLC 1000 Instrument

Inline filters are connected to both the inlet and outlet ports of the flow sensors. The inline filter consists of a stainless steel body (nut, filter, and tube) and a ferrule (see

Figure 69 ).

Figure 69. Inline filter components (nut with integrated tube and filter and ferrule)

Thermo Scientific

Replacing an inline filter requires the following tools and materials.

Tools

• 5/16 in. open-ended wrench

• #2 Phillips head screwdriver

Parts and materials

• Powder-free safety gloves

• Inline filter

CAUTION Wear powder-free gloves and safety glasses when handling parts of the LC system that come into contact with solvents.

To install an inline filter into the receiving port of a flow sensor

1. Close down the EASY-nLC system, and then turn off the power to the instrument

(see

“Closing Down the EASY-nLC Instrument” on page 21 ).

2. Using a #2 Phillips head screwdriver, with a quarter-turn loosen the three captive screws that secure the right side panel to the instrument housing. Then remove the panel.

EASY-nLC Series Troubleshooting and Maintenance Guide

81

4

Routine Maintenance

Replacing an Inline Filter for the EASY-nLC 1000 Instrument

3. While holding the wide end of the ferrule toward the nut, slide the ferrule over the tube that extends from the threaded end of the nut.

IMPORTANT The inline filters have a swept volume (flow path volume) of less than one microliter.

To prevent leaks, take care to properly seat the ferrule in the receiving port. Once the ferrule is swaged onto the tubing, do not connect the fitting to a different receiving port.

4. Using a 5/16 in. open-ended wrench, tighten the nut.

5. Install the nanoViper solvent inlet line into the inline filter (see

Figure 70 ).

Figure 70. Installed inline filters

Inline filter

6. Run the Back Pressure script and the Leak script on the system as described in these topics:

“Test – Back Pressure” on page 48

“Test – Leaks” on page 44

82

EASY-nLC Series Troubleshooting and Maintenance Guide Thermo Scientific

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