FLK Gas Sampling System - MPIP - Free

SQ254 Heat Exchanger
2. Installation
2.1 Installation of the heat exchanger
The installation platform has to be even and must endure a weight of estimated 400 kg/m 2 . The device should be
protected against direct influence of weather (snow, rain, sun). It is filled up with heat transfer liquid ex works.
The connection pieces for the cooling tubes are sealed with blind flanges. The flow direction is marked by means
of arrows. After removal of the blind flanges the flexible hoses have to be connected between the sample probe
and the heat exchanger. The bleed valves (15) have to be mounted at the highest point of the flexible hose. The
3000mm hoses are for the connection between the sample probe and the bleed valves. The bleed valves are
connected to the heat exchanger by means of the 1500mm hoses.
The level indicator on the expansion vessel (5) is adjusted to a “cold level” of 87mm. The switch point of the level
switch is adjusted to a minimum level of 85 mm, measured from the bottom of the expansion vessel.
2.2 Electrical connection
The electric connection has to be carried out according to the national standards at the installation site.
2.3 Filling up the heat exchanger with cooling liquid
Perform the following steps:
1) close the bleed valves (15) before filling up the cooling liquid
2) remove the screw plug (5) at the expansion vessel
3) fill in the cooling liquid up to estimated ¾ of the expansion vessel
4) close the expansion vessel with the screw plug
5) open the stop valve (14) completely
6) set the main switch into the “ON” position
7) press S1 to start the circulation pump
8) observe the coolant level through the inspection glass
9) press S2 to stop the circulation pump, when the coolant level drops below ¼ of the
expansion vessel
10) repeat steps 2 to 9 until the filling level stabilize to “LEVEL COLD”
11) carefully open the bleed valves (15) so that air and bubbles can escape
12) open and close the bleed valves in short terms until air is completely escaped
13) observe the flow meter. Stable flow indicates the bubble free cooling circuit
14) Check the “COLD LEVEL” again and perform steps 2 to 13, if required
Excess coolant can be drained by means of the valve at the bottom of the heat exchanger.
Check the sieve in the filter neck after some time of operation and clean it, if necessary.
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