Wika GTU-10 Manual de usuario descargar pdf (Pagina 12)

WIKA operating instructions portable SF

gas transfer unit, model GTU-10

14051107.01 06/2013 GB/D

6. Commissioning, operation

Ensuring the gas quality

The system may only be operated with pure SF

gas. Contaminated SF

gas must be

cleaned with suitable pre-lters. The quality of the gas can be checked using a gas

analyser, e.g. GA11 SF

-Q-Analyser.

If the compressor is contaminated with decomposition products from SF

gas, proper

functioning can no longer be guaranteed.

Switch-o with gauge pressure > 40 bar abs.

Should a pressure of > 40 bar abs. be present at the outlet, the compressor will switch

o automatically. The cause could be a full cylinder or a closed valve on the gas cylinder.

The pressure at the outlet must drop below 40 bar abs. in order to be able to restart the

compressor.

Should the compressor not turn o automatically, a mechanical safety valve will open at

a pressure of 50 bar abs.. In this case, shut down the compressor immediately and send

it back to the manufacturer for inspection (see chapter 9.2 “Returns”).

The volume of the pressurised parts of the small-capacity compressor is 1.2 litres.

Due to the small volume and the low pressure, no environmental damage is produced.

With any heating up of the gas and the associated pressure rise, the over-pressure is

reduced via a safety valve.

On every GTU-10, prior to delivery, a pressure test with switch-o on over-pressure is

carried out.

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Wika GTU-10 Manual de usuario Pagina 12