Cleaning; Rinsing And Drying In The Cleanroom; Verification; Assembly - POSEIDON Xstream Series Service Manual

6. SERviCE
THE PROCESS BElOW SHOUlD BE PERFORMED OUTSIDE THE ClEANROOM AREA

Cleaning

1. Wash your hands before this cleaning process.
2. Always ensure the UltraSonic cleaner is absolutely clean inside
3. Fill the UlraSonic cleaner with Poseidon FineClean Ultra and water in the ratio 1:5.
4. Let the UltraSonic cleaner reach its working temperature 60-70°C .
5. Place all parts in the basket. The parts shall be placed so that no air is trapped inside.
Turn the part a few times under the solution until no bubbles are coming from it. Ultra
Sonic cleaning agitates away contaminants, why it is important to finally place the part
so that contaminants can drop out freely, i.e. open holes pointing down. (as shown in
the figure). Ensure parts are not contacting each other, since that may reduce the
cleaning effectiveness.
6. Immerse and ultra sonic clean the parts for 20-25 minutes
7. 3440, rolling diaphragm and the servovalve shall only be cleaned for 10 minutes
8. Bring all parts needed to assemble the complete regulator to the clean room. Keep
the bagged 2

assembly.

THE PROCESS BElOW SHOUlD BE PERFORMED INSIDE THE ClEANROOM AREA

Rinsing and drying in the cleanroom

From this stage and through the assembly stages cleanroom clothing including gloves shall be used.
Pick up each part from the basket and rinse carefully under running water at least 30 seconds per part, or;
Rinse in two stages keeping the parts in the basket. Immerse the basket with the parts in another container of at least 3 litres of
clean water and agitate for at least 5 minutes. Then replace the rinsing water with new clean water (ideally deionised, distilled,
and filtrated water), and rinse for another 5 minutes. Ensure all cavities are carefully rinsed. It is the internal rinsing which is the
most important!
Dry the parts by using a cleaned blowgun and clean air, and blow dry each part carefully.

Verification

White light
All parts shall be observed for the absence of contaminations under strong white light and for the accumulations of lint fibres.
This method will detect particulate matter in excess of 50 microns and other contaminations in relatively large amounts. The
part being examined must be recleaned if any contamination is detected using this method. You shall have access to, and use
if found necessary, a magnifying glass or a microscope with at least x10 magnification.
Ultraviolet light (Black light)
Examine all parts in darkness using an ultraviolet light of between 3200 to 3800 Angstrom wavelength. If a bluish-white
fluorescent blotch, smear, smudge, or film is present, the pert must be recleaned. Ultraviolet light inspection will help to verify
that cleaned surfaces are free from any hydrocarbon fluorescence.
If parts cannot be used immediately for assembly, pack in clean plastic bags to avoid parts from being recontaminated.
Assembly
Lubricants shall be used sparingly. Excessive quantities of lubricant can trap particulate and other
contaminants developing apotential fire hazard.
Parts marked with the
should be stored in it's original packing until it is time for assembly.

Xstream first stage

Step Parts
All first stages
4758 Zytel valve seat Xstream
1
26
stage parts and the service kit parts in their bags until immediately before
nd
symbol are parts that must be replaced at every service. New parts
Tools/Instructions
SERviCE maNual
Replace Picture
- xSTREam