Discovery TGA™ Getting Started Guide
Page 52
3
Drain the coolant and flush out the system as follows:
a
Lift the heat exchanger and dump out the contents of the water reservoir.
b
Fill the reservoir to 2/3 full with
distilled water only
and replace the cap.
c
Reconnect the heat exchanger control cable and water lines to the instrument cabinet.
d
Turn on the pump by clicking
Heat Exchanger
from the
General
Control panel, and allow the water
to circulate for several minutes.
e
Turn off the pump by clicking
Stop
from the
General
Control panel, and check the clarity of the
water in the reservoir bottle.
f
If the water clarity is still unacceptable, disconnect the heat exchanger cable and water lines from
the instrument cabinet, and repeat steps a through e.
g
Continue repeating this procedure until you are satisfied with the clarity of the water in the reservoir
after it has circulated.
4
Dispose of the water. Add TA Instruments TGA Conditioner (P/N 952377.901) into the water reservoir.
Refer to the instructions on the conditioner bottle for the amount of conditioner to add to the reservoir,
then fill the reservoir to the inner rim with distilled water.
CAUTION: Do not put any liquid other than distilled water and TA Instruments’ TGA 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.
5
Turn on the pump again by clicking
Heat Exchanger
from the
General
Control panel, and circulate the
water until the air bubbles disappear from the water lines, then stop the pump by clicking
Stop
from the
General
Control panel.
NOTE
: After the system has been started, recheck the level of water in the reservoir and refill to the inner
rim if necessary.
6
Replace and tighten the water reservoir cap.
Purging Air from the Heat Exchanger System
Air trapped in the heat exchanger system must be purged before starting the first run. After the initial
installation of the Discovery TGA is complete, perform the following procedure:
1
Turn on the instrument. See
“Starting the Discovery TGA System” on page 54
if necessary.
2
Start the heat exchanger pump by either:
•
Clicking the
Heat Exchanger
icon from the TRIOS software
General
Control panel, or
•
From the user interface, press
Settings
and then set Heat Exchanger to
ON
.
3
Refill the coolant reservoir as needed. Repeat this process until all of the air has been purged from the
system and the instrument stops reporting an error.
