Purged Optical Path Window Cleaning; Preventive Maintenance; Water Chiller; Gas Filters - Thermo Scientific iCAP 6000 Series User Manual

Purged Optical
Path Window
Cleaning
Preventive
Maintenance

Water Chiller

Gas Filters

Thermo Fisher Scientific
Before attempting to clean the Purged Optical Path (POP) window
(note: there is also one below the torch on a Duo configuration
instrument) turn off the plasma and allow thirty minutes for any hot
areas to cool down.
Open the small access door next to the sample compartment door and
withdraw the POP window assembly. Clean the POP window using a
lint free cloth and clean water. Repeat the cleaning process using
methanol then, when dry, re-insert the POP window into the fore optic
assembly.
Warning: Do not open this access door when the plasma is running,
there is a potential UV radiation hazard. All mirrors in the optical
system are coated so be sure not to touch the mirror below the radial
view POP window in the Duo configuration. ▲
If further cleaning is necessary, remove the quartz window from the
POP and soak in cold acid for two hours (a mixture of nitric and
hydrochloric similar to Aqua Regia is suitable). After acid soaking rinse
in de-ionised water, then with a volatile zero residue organic solvent
(propanol is suitable) to aid drying.
Although minimum user maintenance is required, periodic checking of
performance is required by many laboratories. This is particularly
important for customers subject to external standards and regulations
(for example ISO9000, EPA or NAMAS). Details of these options are
available from a local Thermo Fisher Office.
All electrical supplies, gas supplies and extraction must be checked to
ensure local health and safety guidelines and regulations are complied
with. The gas and cooling water should be checked for leaks at regular
intervals.
It is important that the cooling fluid used for your iCAP is made up
correctly as specified in the Pre Installation Manual.
An effective maintenance plan would include replacing the cooling fluid
with new fluid periodically depending on the usage of your instrument,
and also to ensure that any air filters and water filters a kept clean. Refer
to your chiller documentation for more information.
Gas filters fitted to your purge and plasma gas inlets must be checked
for cleanliness to prevent loss of instrument performance. If the filters
appear dirty, replace them and check the quality of your gas supplies.
Maintenance

Preventive Maintenance

5-3
iCAP User Guide