Service/maintenance
Chapter 7
OPERATION MANUAL
V1.2.0en/12.05.15//14.06
Liability for errors and misprints excluded.
Unistat® T300 Series
83
Open the
>Drain<
[8] and drain the detergent through the draining hose into a suitable container
(such as the original canister, which is compatible with the cleaning agent).
Repeat the steps “Filling”, “Venting”, “Start/Stop circulation” and “Draining” until the drained
ethanol remains clear.
Remove the bypass hose.
Leave an application connected, if you have simultaneously cleaned a used application (externally
closed).
Leave the
>Drain<
[8] open for a while to allow the cleaning agent to evaporate in the tempera-
ture control unit.
Close the
>Drain<
[8] once the residual cleaning agent has evaporated.
Dismount the drain hose.
Remove the collecting tank.
Discard the collecting container, including its contents, properly.
Re-connect your application. (Only if you have cleaned the thermal fluid circuit using a bypass
hose.)
Fill the temperature control unit with thermal fluid, as described on page 58 in section
and venting externally closed application«
or on page 62 in section
.
Vent the temperature control unit, as described on page 58 in section
. An externally open application does not need to be vented.
Start the “degassing” function as described on page 59 in section
. An externally open application does not need to be off-gassed.
Restart the temperature control unit in normal mode.
7.5
Cleaning the surfaces
Exposed plug contacts
DAMAGE CAUSED BY FLUID INGRESS
Protect unused plug contacts with the protective caps supplied.
Clean surfaces only with a damp cloth.
A standard stainless steel cleaning agent is suitable for cleaning the stainless steel surfaces. Carefully
clean paint surfaces (damp) using the suds of a mild detergent.
7.6
Inspect the mechanical seal
No visual inspection of the drip tray
MATERIAL DAMAGE IN THE TEMPERATURE CONTROL UNIT BY OVERFLOW OF THE DRIP TRAY
Check the drip tray on a monthly basis and empty it when necessary.
Expect drop formation at the mechanical seal when operating with thermal fluids that evaporate
only very slowly, as mechanical seals are never absolutely tight. These drops are collected under
controlled conditions. The drip tray
must
be regularly checked and emptied if necessary (see page
78, section
»Function check and visual inspection«
).
7.7
Plug contacts
Exposed plug contacts
DAMAGE CAUSED BY FLUID INGRESS
Protect unused plug contacts with the protective caps supplied.
Clean surfaces only with a damp cloth.
Protective caps are supplied for all plug contacts. Make sure that any plug contacts not required are
protective with the caps.