Agilent Technologies 1290 Infinity User Manual page 160

3
LC Injector HTC/HTS Description and Installation
Troubleshooting
Solvent Delivery Pump is not functioning
The pump flow rate depends greatly on the viscosity of the selected wash
solvent and the given backpressure of the entire system. The valve bore size
must be considered, as well as the tubing and injection loop internal diameter.
If in doubt about the delivered volume of a pump, a simple test can provide the
answer.
Execute the first test, only if the result is negative is it necessary to check
the flow from the pump directly.
Test 1: Pump flow delivered throughout the entire system
1 Prepare a graduated cylinder with a volume of 10 or 20 mL, Test solvent:
2 Select the path from local Terminal: Menu/Utilities/Wash Station/select the
Test 2: Pump flow delivered at pump outlet
1 Disconnect the outlet tube from the pump module.
2 Connect PEEK tubing with the following dimension to the outlet of the
3 The wash solvent in the reservoir bottle should be water, if necessary
4 Activate the pump by selecting path: Menu/F3-Setup/Objects/Events/Pwr-Out1
5 Collect the pumped water in a graduated cylinder.
This short test will give an indication of whether the system is performing as
expected. If no or very little flow is observed, systematically check using a
process of elimination. Consult
details.
160
Water.
desired Wash Station
The delivery pump and the DLW Actuator is activated, the delivered flow
can be collected at the DLW syringe needle.
Expected result: A volume of approx. 8 mL should collect. (Water, DLW
syringe needle Gauge 22)
pump module. Length 85 mm, ID 0.25 mm (0.010 inch).
replace the solvent;
or Pwr-Out2.
Within 30 s the pump should deliver approx. 10 mL.
"Troubleshooting"
Agilent 1290 Infinity LC Injectors HTC/HTS User Manual
on page 146 for more