Manual of instructions TT-390 17/35
5.4. Initial operation
The temperature control unit can only be operated with heat transfer oil. The unit has to be filled
manually through the filler neck for the operation. A guideline for the required filling amount can be
taken from the technical data.
Caution „residual water“ (temperature control unit, consumer, hoses) –
water in the oil can lead to dangerous operating conditions. The temperature
control unit can be overflow. Risk of injury by escaping oil-water mixture!
The temperature control unit has to be connected hydraulically and electrically. Possible block valve
must be open.
• Switch on the unit electrically: Turn on the main switch and press the unit ON/OFF-switch
• After switching on the unit the unit can be filled through the filler neck. In the meantime the yellow
lamp lights and the horn sound. If the correct level is reached the pump starts. If the unit switches
down after this, the level has to be corrected as soon as the system has enough heat transfer oil.
Too much heat transfer oil reduces the expansion volume! The heat transfer
oil expands during the heating and could be overflow.
Warning overflow oil has to be removed immediately!
Oil-soaked isolation has to be replaced immediately, they can ignite.
Waste oil has to be disposed as prescribed by law. Never let waste oil come
into the sewage system or soil.
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