PerkinElmer PINAACLE 900 Series, Руководство по оборудованию и обслуживанию для клиентов

Страница: 365 / 390

349
Performance Problems
Rapid corrosion of tube Argon flow rate is too low.
Make sure that the argon gas
(or Nitrogen gas, or any insert
gas) is clean and DRY. The
supply - piping and tubing, of
this clean and DRY gas to the
furnace must also be clean
and dry. Set suitable flow rates in each
step of the furnace program.
Set the correct inlet pressure
for the argon.
The drying step is not ade-
quate. Solvent fumes remain
in and around the tube after
drying, when raising to higher
temperatures of pyrolysis and
atomization. With WinLab32 for AA, use
the Method Editor to enter a
suitable furnace program. See
the Recommended Condi-
tions.
The samples/solutions ana-
lyzed may be very corrosive,
and/or also contain high con-
centration of acids, so the
tube life is shorter. Dilute the solutions, to reduce
its corrosiveness, the acid
concentration, and to use
appropriate temperature pro-
gram that may contain slower
ramp, lower pyrolysis and
atomization temperatures.
Develop equitable tempera-
ture program. Please seek
advice from the PerkinElmer
Product Specialists.
Autosampler does not go to
the correct locations. The wrong configuration of
the tray for the autosampler. Select the correct sample tray
in
WinLab32 > Options >
Furnace Autosampler . See
the online help.
Autosampler does not oper-
ate. The communication cable is
not connected correctly. Make sure that you use the
correct cable, and connect it
to the correct communication
port.
Problem Possible Cause(s) Corrective Action