Integral XT
YAWE0028/ 11/11/2016
Safety information
9
Do not put any heavy parts on the device.
The operating personnel must wear suitable protective equipment.
Do not operate the device when leaks have been found; ventilate the siting room immediately.
With pressure sensitive loads (e.g. glass apparatus) with a maximum permissible operating pressure
below the maximum pressure of the pump (3.5 bars for water, with XT 1850 W 7.0 bars with water),
the hoses of the load must be routed such that kinking or squashing is not possible. In addition, a
separate safety valve must be installed to protect against faulty operation (
7.9.4, 7.9.5 and page
34).
When selecting the heat transfer liquid, observe the permissible temperature range.
Heat transfer liquids from LAUDA are recommended which have been tested for use with the device
(
6.2).
Always set the over temperature cut-off point immediately according to the heat transfer liquid used
when filling (
7.16.1).
If required, the heat transfer liquid should be checked for fitness for use (e.g. when changing the
method of operation), or half-yearly. Further use of the heat transfer liquid is only permissible if the in-
spection indicates this (
9.3.1 and 9.3.4).
Keep the cover of the filling point closed during operation.
Under certain operating conditions (degassing, rapid heating phases), the temperature may increase
in the expansion vessel. In extreme cases, the outflow temperature of the device is reached. If heat
transfer liquids are heated beyond a certain temperature (25 °C under the fire point of the heat trans-
fer liquid), then sources of ignition must be kept away from the filling opening and overflow (and at the
aeration point of the expansion tank). In such cases, a nitrogen overlay of the expansion vessel is
recommended (cover XT with connection for nitrogen overlay LWZ 072).
Degas carefully (slowly) (
7.6.3).
It is essential to avoid gas cushions in the load system. This can be done by reducing the pump pow-
er by one or two levels and checking that the level indication of the device does not increase.
If an overflow catchments container is connected, it must be suitable (including the connecting hose)
for the maximum operating temperature. The connection hose must be securely fitted.
The overflow must not be closed.
Draining / drain mode is only permissible with an established temperature range (
7.7).
During operation the drainage openings must be closed with plugs (standard accessories).
On changing the heat transfer liquid, thoroughly clean the device and completely drain it. It is recom-
mended that the device is rinsed with the new heat transfer liquid (
7.8).
It is essential to prevent the ingress of secondary liquids (e.g. via a customer's defective heat ex-
changer).
Only water-cooled devices:
The return hose of the water cooling must be securely fixed on the outlet port in order to prevent the
hose sliding off uncontrollably, also during pressure surges.
The return hose of the water cooling must be fixed on the outlet port that hot cooling water cannot
splash out.
It is essential to prevent kinking or squashing of the return hose for the water cooling. Excessive
pressure can cause the cooling water hoses to tear and hot water to escape.
To prevent damages by a leakage of the cooling water system it’s recommended to use a leak-water
detector with shut-off valve (Aqua Stop).
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