Lauda MC 250, Operation Instructions Manual

Page: 31 / 64

DANGER!
Use of incorrect heat transfer liquid
Fire

Select a heat transfer liquid with a temperature range 20 K
above the temperature range of the application.
WARNING!
Overflow of heat transfer liquid
Electric shock

Do not overfill the machine. Note the level indicator and
the thermal volume expansion of the heat transfer liquid.
WARNING!
Spraying of heat transfer liquid
Electric shock

Do not spray any heat transfer liquid. Use a funnel for
filling.
You have already connected the external consumer as described in chapters
Ä
Chapter 4.2.1 ‘Hoses’ on page 24 and
Ä
Chapter 4.2.2 ‘Connecting
external consumer’ on page 25.
When using pressure-sensitive consumers, note chapter
Ä
Chapter
5.4 ‘Setting the pump pressure’ on page 32 .
1. Close the drain plug. For this, turn the plug clockwise as far as the
stop.
2. Turn the bypass adjustment wheel anti-clockwise as far as it will go.
3. Attach a suitable hose to the overflow connection of the device.
The permitted hose diameter for the overflow must be com-
plied with. Further information about the suitable hose diam-
eter can be found in the technical data
Ä
Chapter 11.4
‘Hydraulic circuit’ on page 54 .
4. Insert this hose into a suitable canister to collect overflowing heat
transfer liquid.
Running dry of the consumer can also occur in a closed ther-
mostatic circuit with consumer at a higher level in the case of
stopped pump and ingress of air into the temperature control
circuit (for example, a not completely closed or defective
bleed valve). Match the size of the overflow container to this
if possible.
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