Perkin-Elmer STA 6000, Installation And Hardware Manual

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60 . STA 6000 Installation and Hardware GuideSTA 6000 Installation and Hardware Guide
STA 6000 Maintenance
The STA 6000 analyzer needs little routine maintenance other than giving it the proper
treatment of a sensitive electromechanical device. Avoid contamination of the furnace by
always using a system purge gas and, ideally, a sample purge gas. If the furnace should
become contaminated, clean it as soon as possible.
When cleaning the analyzer, use the following procedures:
• Cleaning the Furnace and Sample Holder
• Cleaning the Cover
Cleaning the Furnace and Sample Holder
When the furnace and sample holder have become contaminated with reaction products, the
best method of cleaning them is to heat the furnace up to 995 °C in an air or oxygen
atmosphere for approximately 10 minutes. This should remove all products that can be
oxidized.
CAUTION
ATTENTION
Do not touch the sample thermocouple (in the TGA 4000).
Ne pas toucher l'échantillon de thermocouple (dans le TGA 4000).
CAUTION
ATTENTION
Do not remove the furnace lid when heating at high temperatures.
Ne pas enlever le couvercle du four lorsqu'il chauffe à des températures
élevées.
If the sample holder becomes contaminated, remove it from the furnace and clean it gently
with a small brush.
When a sample has dropped into the furnace, remove the sample holder first, if present, and
then remove the sample material, preferably with a vacuum. Take care that material does
not fall into the hole for the sensor.
Cleaning the Cover
The reaction byproducts from the samples run inside the STA 6000, TGA 4000 and
Pyris 6 TGA furnace and condense on cold spots of the instrument: the bottom side of the
cover and the top inner part of the cooling jacket. The bottom side of the cover can be
cleaned easily with a tissue and some solvent. This should be done on a regular basis. The
top inner side of the cooling jacket can be cleaned in a similar manner. To keep the top of
the cooling jacket clean, a ring of porous ceramic material is provided and should be
positioned around the entrance to the furnace. The ring should be replaced when necessary.