Wika GTU-10 Bedienungsanleitung PDF herunterladen (Seite 15)

WIKA operating instructions portable SF

gas transfer unit, model GTU-10

14051107.01 06/2013 GB/D

6. Commissioning, operation

6.2 Instrument construction

Overpressure warning lamp

On/O switch

Pressure display, inlet pressure

Operating hours counter

Pressure reducer

Pressure display, output pressure reducer

Pressure display output pressure

Valve coupling, input

Valve coupling, output pressure reducer

Valve coupling, output

6.3 Pumping out an SF

gas compartment into a gas cylinder

1) Connect the unreduced or reduced outlet with the gas compartment to be  lled. Only

one of the two outlets should be connected.

Before switching on the GTU-10, the connection to the gas compartments should

be checked for leakage at the inlet and outlet. A leakage detector for SF

gas (e.g.

model GIR-10) should be used to test the connections.

2) Press the Start button in order to switch the compressor on. The gas will be pumped

from the inlet to the outlet.

If the tank pressure at the inlet is higher than that at the outlet, a pressure equalisa-

tion will occur.

Example: 7 bar abs. in inlet tank and 1 bar abs. on the outlet side will generate a

lower equalised pressure, e.g. 3 bar abs., in the connected system, depending on the

volume ratio.

For the pump curve, see page 21

3) After reaching the desired  lling pressure in the tank being pumped out, the unit

should again be switched o and all connections disconnected.

5 6

8 9

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Wika GTU-10 Bedienungsanleitung Seite 15