Buchi Alltech 3300 ELSD User Manual

BÜCHI Labortechnik AG
www.buchi.com
21
6.2 PERFORMING DIAGNOSTIC TESTS
6.2.1 NEBULIZER GAS PRESSURE TEST
1. Make sure the inlet gas pressure is set between 65 and
80psig before starting the test.
2. Turn off mobile phase flow. Wait several minutes for the
detector to stabilize.
3. In the software, select Maintenance/Tests/Nebulizer Gas
Pressure Test and press Enter. The Nebulizer Gas
Pressure Test screen will then appear:
4. Press Test and the Nebulizer Gas Pressure Test will begin.
The test takes 60 seconds to complete. A timer bar will
appear showing how much time is left for the test:
5. The following steps occur during the Nebulizer Gas
Pressure Test:
•
Gas flow is set to 2.0L/min and allowed to stabilize.
•
Minimum, maximum, and average nebulizer gas
pressure values are determined.
•
Test results are displayed. The gas flow is returned to its
pre-testing set point.
6. Passing requirements for the Nebulizer Gas Pressure
Test are:
•
Nebulizer gas pressure must be between 3 – 30psig.
•
Pressure variation must be less than 3psig during the
testing period.
7. Once the test is completed, press Done to return to the
main screen, or press Test to repeat the test.
8. If the test has failed, refer to the following table, Nebulizer
Gas Pressure Test Results, for possible fail messages and
their solutions.
NEBULIZER GAS PRESSURE
TE
ST RESULTS
RESULT
CAUSE
SOLUTION
Fail: Gas
pressure is
too high.
Blocked nebulizer.
Nebulizer gas
pressure sensor
error and/or other
electronics error.
Clean the
nebulizer. Refer to
Section 5.2 for
details.
Contact your local
BUCHI Customer
Service office which
can be found on
www.buchi.com.
Fail: Gas
pressure is
too low.
Gas source may be
low or empty.
Regulator pressure
may be too low.
Gas leaks may be
present before the
nebulizer.
Possible nebulizer
gas pressure sensor
error and/or other
electronics error.
Check gas source
and replace if
necessary.
Adjust regulator
pressure to 65-
80psig.
Check gas
connections for
leaks and tighten
fittings if
necessary.
Contact your local
BUCHI Customer
Service office which
can be found on
www.buchi.com.
Fail: Gas
pressure is
unstable.
Blocked nebulizer.
Inlet gas pressure is
unstable.
Gas flow meter,
valve, or other
electronics error.
Clean or replace
the nebulizer.
Refer to Section
5.2 for details.
Check stability of
gas source and
remedy if
necessary.
Contact your local
BUCHI Customer
Service office which
can be found on
www.buchi.com.

Buchi Alltech 3300 ELSD Specifications

General

Brand	Buchi
Model	Alltech 3300 ELSD
Category	Security Sensors
Language	English