Recommended Maintenance - Thermo Scientific Accela PDA Hardware Manual

6
Routine Maintenance

Recommended Maintenance

Recommended Maintenance
84 Accela PDA Detector Hardware Manual
Table 3 lists recommendations for routine maintenance of the Accela PDA Detector. Use the
table as a basis for developing your maintenance program in accordance with your company
practices.
Table 3. Recommended routine maintenance
Procedure
Cleaning external surfaces
LightPipe flowcell cleaning
Wavelength calibration
Dark current calibration
(Calibrating the dark current increases the linearity of the
detector at the high end of its operating range. The dark
current does not significantly affect absorbance values
between 0.2 AU and 0.8 AU. The dark current is a
function of temperature.)
Event log printout
Operation verification
Lamp replacement
Adjust attenuators
Update firmware
*
Good Laboratory Practice (GLP) dictates flushing the LightPipe flowcell with clean solvent after every use. This
practice reduces the frequency of cleaning the LightPipe flowcell.
Deuterium (D2)
Tungsten (W)
Interval
As needed
*
As needed
After lamp replacement or as
needed
After 100 hours of use or
monthly, whichever comes
first
After significant changes
(>4 °C) in ambient room
temperature
After lamp replacement
Weekly
Semi-annually
Replace the deuterium lamp
when the detector noise
reaches an unacceptable level
(see "Lamp Lifetime and
Detector Noise" on page
The useful lamp lifetime is
approximately 1000 hours at a
diode array scan rate of 40 Hz
and 2000 hours at a diode
array scan rate of 20 Hz.
Every 2500 hours or as
required
As needed
As needed and as updates
become available
Thermo Scientific
5).