Cleaning The Measuring Instruments - WIKA CPB3500 Betriebsanleitung

6. Commissioning, operation
6.11

Cleaning the measuring instruments

This cleaning/degreasing process is only suitable for use with pressure measuring instruments with either phosphor, bronze,
beryllium, copper, Monel or stainless steel Bourdon tubes in the form of a "C".
It is not advisable to degrease pressure gauges with steel Bourdon tubes since a very small amount of rust can cause
inaccuracies of reading and early failure of the tube.
This method of cleaning is not suitable for use with pressure gauges which are fitted with coiled Bourdon tubes.
It is neither suitable for any measuring instruments which are to be used on oxygen, as functioning without oil is
not assured. In this case please contact DH-Budenberg/WIKA.
Wear safety goggles!
Protect eyes from flying particles and liquid splashes.
Equipment
This consists of a syringe and a special needle with the point bent through 90°.
Instructions:
1. Fill syringe with solvent (suitable cold degreasing liquid).
2. With measuring instrument connection pointing upwards put needle into connection.
3. Carefully insert into the hole leading to the Bourdon tube.
4. Inject the solvent.
⇒
Ideally the pipe should be half full.
5. Shake measuring instrument in various attitudes to agitate solvent.
6. Suck solvent back into syringe.
▶ Holding measuring instrument at an angle.
7. Check if solvent removed is clean and pure.
▶
To be sure that all oil has been removed, repeat cleaning process until the solvent is as clean as that put in.
Cleaning of gauges
Filling with solvent
WIKA operating instructions, model CPB3500
Removing the solvent
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