Wittmann Tempro basic C 90 Translation Of Original Operating Manual page 16

Diagram of temperature stabilizing circuit: Tempro primus C 90
Nr. Description
1 Heat exchanger
2 Filling solenoid valve
3 Cooling-water inlet
4 Cooling-water outlet
5 Level switch
6 Pump
7 Mould connection-FEED
8 Mould connection-RETURN
The temperature stabilizing circuit includes a heat exchanger (1). The heat exchanger is
filled with water automatically through a solenoid valve (2). (Capacity approx. 9 litres
Tempro basic / primus C90).
Joint water feed for filling (2) and cooling (10) solenoid valves through coarse filter. The
filling height is controlled by the level switch (5).
The temperature stabilizing medium is driven by the pump (6) in an open circuit through
the mould circuit and runs back into the heat exchanger. Mould connections feed and
return (7,8).
The water is heated by the heating element (9) inside the heat exchanger. When the
cooling solenoid valve (10) is opened the cooling water flows through the cooling spiral
(11) and cools the temperature stabilizing medium (indirect cooling).
Cooling water feed and return (3,4).
The medium temperature is monitored by the temperature sensor (12) and closely
controlled by an advanced microprocessor controller (13).
The measuring accuracy is 0.1 degrees and therefore allows for a constant temperature of
+/- 0,5 degrees in the injection mould.
Please read thoroughly the following chapters which contain important
information about installation, start-up, operation, and maintenance.
Tempro basic C 90 & Tempro primus C 90
Nr.
9
10
11
12
13
14
15
16
Description
Heater element
Cooling solenoid valve
Cooling coil
Temperature sensor
Microprocessor controller
Safety temperature cutout
Drain plug
BASIC & PRIMUS C90 V 3.0 english / 10.04.2012
Page 16