BUSCH COBRA NX 0450 A, Инструкция по эксплуатации

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5 | Installation
14 | 40 Instruction Manual COBRA NX 0450-0650 A WCV_EN_en
NOTE
Water hardness unit conversion.
1 mg/l (ppm) = 0.056 °dh (german degree) = 0.07 °e (english degree) = 0.1 °fH (french degree)
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Make sure that the water flow of the cooling water at the outlet (CWO) is monitored.
If it is not possible, Busch recommends calibrating the flow with one or two orifices depending on
the water pressure, see the following table:
Diameter of the orifice Differential water pressure
NX 0450 A
NX 0650 A
No calibration n/a 1 … 2 bar
4 mm at the cooling water outlet 1 … 2 bar 2 … 3 bar
4 mm at the cooling water inlet and outlet 2 … 6 bar 3 … 6 bar
5.2.4 Barrier Gas System Connection (Optional)
PRV FME BGC MAN
Description
BGC Barrier gas connection FME Flow meter
MAN Manometer PRV Pressure regulating valve
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Connect the barrier gas connection (BGC) to the gas supply.
Connection size:
– G1/4, ISO 228-1
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Make sure that the gas complies with the following requirements:
Gas type Dry nitrogen or air
Gas temperature °C 0 ... 60
Maximum gas pressure bar 13