Discovery TGA™ Getting Started Guide Page 65
Replacing Fuses
The Discovery TGA™ contains internal fuses that are not user serviceable. If any of the internal fuses
blows, a hazard may exist. Call your TA Instruments service representative.
The only customer-replaceable fuses are located in the fuse holder located on the back panel of the
instrument. To check or change these fuses:
1 Turn the instrument off and remove the power cord.
2 Next to the instrument power entry module, there are two standard fuse holders. Use a flat-blade
screwdriver to remove the fuse carriers.
3 Remove old fuses and replace the fuses only with the type and rating indicated on the instrument’s rear
panel.
4 Place the fuse carriers back into the fuse holders and lock in place with the screwdriver.
Maintaining the Heat Exchanger
The heat exchanger does not require any maintenance other than to maintain the level and quality of the
liquid coolant. If the level drops too low, or the coolant becomes contaminated, this could result in
problems with your instrument.
CAUTION: Do not put any liquid other than distilled water and TA Conditioner in the heat
exchanger reservoir.
MISE EN GARDE: Ne versez aucun liquide autre que de l'eau distillée et l'agent de condi-
tionnement TGA de TA Instruments dans le réservoir de l'échangeur thermique.
• Check the level and condition of the heat exchanger coolant periodically. TA Instruments recommends
routine checks every three to six months, depending on use of the instrument.
• Add distilled water to the reservoir, when necessary, to keep the reservoir at least 2/3 full. If algae
growth is visible, drain the reservoir, refill it with distilled water, and add TA Instruments TGA Condi-
tioner (PN 952377.901), as described in the Maintaining the Heat Exchanger TRIOS Online help
topic.
WARNING: Always unplug the instrument before you examine or replace the fuses.
AVERTISSEMENT: Débranchez toujours l'instrument avant d'examiner ou de remplacer les fus-
ibles.
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