Thermo Scientific EASY-nLC 1200 Troubleshooting And Maintenance Manual page 68

3
Maintenance Scripts and Service Records
Maintenance Scripts
46 EASY-nLC 1200 Troubleshooting & Maintenance Guide
❖ To run the Leaks script
1. Open the Leaks script as follows:
a. Press Maintenance > Scripts.
b. In the Category list, select Test.
c. In the Name list, select Leaks.
2. Set up the parameters for this script as follows:
a. Press the Parameters tab.
b. To select pump A or B, both pumps, or the entire system flow path for the leak test,
press the cell in the Value column and make your selection from the list:
• To test the solvent path from pump A to valve A (upstream of valve A), select A.
• To test the solvent path from pump B to valve B (upstream of valve B), select B.
• To test the solvent path from pump A to valve A and from pump B to valve B
(upstream of pumps A and B), select A + B.
• To test the solvent path downstream of valves A and B, select System.
on page 45 shows the pressurized solvent path for the system leak test.
3. For a system leak test, connect the Column Out line to the Waste In line using the
appropriate union for your instrument setup
4. Select the pressure at which the leak test shall be performed. The default setting is 1180
bar.
Note A leak test should be performed at pressures that are used during the business
logic. For example 1180 bar for equilibrate steps and near the pressure during the
gradient.
Table 9. Leak test unions
Instrument
EASY-nLC 1200
EASY-nLC 1200
with the modified Column Out and
Waste In lines provided in the
UHPLC Liquid Junction Kit
(Table 9).
Part number Description
SC900 Viper union
stainless steel zero-dead-volume
union for 1/16 in. OD tubing
ES272 UHPLC fused-silica union
Figure 32
Thermo Scientific