Manual of instructions TT-188 26/37
6.6. Mould drainage – Changing the consumer
The hydraulic connections to the consumer can be discharged with the mould drainage in the tank.
To drainage the mould, it will be as follows:
• Cool down the unit below +60°C
• Switch the unit off by the green ON/OFF-switch
• Changeover switch for pump operation mode to position „Vacuum“
• Press the green button „Mould drainage“ till the consumer is empty
• Connections of the heat transfer circuit (to and from mould) can now be removed safely
• Install the connections and restart the unit
The temperature control unit may be pressurised!
Only when the pressure gauge shows 0 bar, disconnect hoses!
The unit must be drained completely and stored in a dry place at 10 - 40°C
while not in use.
6.7. Leak prevention operation
If the change-over switch for the pump operation mode is in position „pressure“ the pump is operating
under pressure and in position „vacuum“ as a leak prevention device. The pump now sucks heating
medium through the mould, the temperature control will not be changed.
Leak prevention operation eliminates leaks from the mould area by sucking
the medium around the process. The air which is sucked in is automatically
vented.
If the unit works for a longer period in the leak prevention operation, the unit
can be damaged!
The unit can only reach the optimal suction if the hose inside diameter in
conformity with the nominal value.
Quick couplings reduce the suction drastically.
When using non-return flaps or non-return valve, the leak prevention
operation is not possible!
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