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Adsorber MS-R

Adsorber MS-R



Giebel Filtec GmbH

Giebel FilTec GmbH
Carl-Zeiss-Str. 5
74626 Bretzfeld-Schwabbach

Phone +49 7946 944401 0
Fax +49 7946 944401 29




Adsorber MS-R


Size 35   MS-R 35L

Materials used:

Stainless steel, acrylic glass, FKM, silica gel Orange

REACH notice:
No ingredients requiring disclosure under Regulation (EC) No 1907/2006.




Use Reusable
Housing material Stainless steel 316L
Adsorbents Silica gel
Particle filters Coarse filter foam
Seal material FKM
Operating temperature -40°C - +80°C
Connection BSP / Flange





ma r 1l ma r 1l


MS-R 35L (without valve)

MS-R 35L (with valve

Total weight [kg]



Adsorbens [kg]



Max. water absorption [ml]



Height [mm]



Diameter [mm]





Valves [IN - OUT]

0 - 0

1 - 0




1. place adsorber MS-R next to the tank on the floor. Can be easily moved by means of rollers.





2. Remove the protective cap from the connection and connect the tank to the adsorber by means of a pipe or hose.






Once the silica gel is completely saturated, a replacement kit must be used.




0% -> 100%

If the color of the silica gel has completely changed according to the color indicator used, it must be replaced. At the same time, all wearing parts are replaced to ensure optimum use.


    1.   Open the lower flap on the adsorber and empty the silica gel completely.

    2.   Remove the foam filter in the adsorber by opening the cover cap and replace it with a new one.

    3.   Loosen the retaining rings on the sight glass, remove the sight glass and flat gasket.
          Insert new sight glass and flat gasket from the inside and refit retaining ring.

    4.   Remove flat gaskets on the flaps and replace with new ones.
          Untere Klappe wieder verschließen.

    5.   Fill in silica gel (50 kg) through the upper flap and close the flap.








Adsorber Spare parts kit* Desiccant
MS-R 35L ET MS-R 35L 2x SOG 25kg



SPARE PARTS AND STORAGEExample representation
of the spare parts kit
     Spare parts kit
- Filter disc
- Seal kit
- Sight discs

individually and airtight packed.
         SPARE PARTS AND STORAGE      Desiccant
- Silica gel



Order of spare parts

For a constant operational readiness of the adsorber and thus the plant, make sure that a spare parts kit or spare adsorber is always in stock.
The time until the complete colour change and thus the service life of the adsorber depends on various factors:

  • Number and duration of flow and loading intervals.
  • Air flow volume and flow velocity, relative humidity of ambient air.
  • Temperature of the ambient air and the medium to be ventilated.


Storage of adsorbers

All articles filled with desiccant are packed airtight. To avoid damage to the desiccant, they must be stored in dark and dry rooms at -10°C to +30°C.




In practice, the most common regeneration method used is the temperature increase. When desorbing water vapour from silica gel, the temperature must be above 100°C. For silica gel with colour indicators, a regeneration temperature of 120°C should be maintained in order not to damage the colour indicator applied.
It is nevertheless recommended to use fresh silica gel.


At the end of its useful life, the device must be disposed of in accordance with the relevant legal regulations. Metal and plastic parts should be separated and disposed of separately.
Silicagel Orange is not classified as a hazardous substance under European Union legislation (Regulation EC No 1272/2008). It is not subject to compulsory labelling according to EC Directive (67/548/EEC or 1999/45/EC). Silicagel Orange is not classified as a substance hazardous to health or the environment.


Risk and hazard analysis

1. Moist air flows into the system
Porous seals
Moist air can flow into the adsorber or into the plant at the porous points. This means that complete drying is not possible and moist air enters the system.

Saturated drying agent
When the desiccant is saturated, it can no longer absorb moisture. This allows moist air to enter the system.

Air flow rate too high
If the air flow rate is too high, the contact time between moist air and desiccant is too short. This allows moist air to flow into the system.

Oil on the drying agent
If too many oil particles enter the adsorber, the oil particles close the pores of the desiccant and thus prevent adsorption.

Ambient temperature too high
If the ambient temperature exceeds 80°C, the binding forces in the desiccant decrease. This means that the incoming ambient air is only dried to a limited extent.

2. Positive or negative pressure builds up in the system
Valves are jammed / blocked
If the functionality of the valves is impaired by impurities, the pressure in the system increases.

Air flow rate too high
Too high an air flow rate can cause over- or underpressure in the system.

Contaminated filter element
The filter unit can be clogged by dirt particles and can therefore build up pressure in the system.

Oil on the drying agent
If oil particles get into the adsorber, the spaces in the fill can be filled with oil and the fill will stick together. This can cause pressure to build up in the system.

3. Adsorber is damaged
Material resistance
When selecting the adsorber, the ambient and operating conditions should be considered. An aggressive environment or liquid in the container can damage the adsorber.

Temperature range
The ambient and operating temperatures should not exceed or fall below the specified range, otherwise the adsorber may be damaged.

Improper handling
Incorrect or improper handling can damage the adsorber. The recommended installation must be observed.

Strong vibrations
Strong vibrations of the plant can damage the adsorber.

Pressure range of the system
The adsorber should not be exposed to positive or negative pressure above 1.0 bar, otherwise the housing may be damaged.

Thread of the adsorber and accessories is damaged

Thread of the adsorber and accessories is damaged
When mounting the adsorber on the system, the threads must be slightly moistened with oil. Failure to lubricate the threads can lead to the thread rubbing and is not a reason for complaint.



Maintenance plan

1. Check seals for wear

Check    The flat gaskets and O-rings installed on the adsorber must be checked for perfect condition. For this purpose the seals in the lid, on the filter and on the connection should be checked for brittleness.
Cycle    Half-yearly
Measures    In case of existing damage, a new spare parts kit or a new adsorber should be used.

2. Check filter unit for impurities

Check    Take off the lid and remove the activated carbon disc. Then empty the desiccant. The filter unit can then be removed. This should be checked for contamination and should be free of dirt for smooth operation.
Cycle    Half-yearly
Measures    The filter element is part of the spare parts kit and should be replaced if it is contaminated.

3. Visual inspection of the silica gel

Check    The loading condition of the silica gel must be determined by visual inspection of the adsorber. The colour orange indicates that the silica gel can still adsorb water and air is dehumidified. When the silica gel is completely saturated, the colour changes to green or colourless.
If there are oil particles on the silica gel, these close the pores and the adsorption capacity is reduced. This causes the silica gel to discolour more slowly and unevenly.
Cycle    Half-yearly
Measures    If the silica gel is loaded or damaged by oil, a new spare parts kit or a new adsorber with fresh silica gel should be used.

4. Check valves for jamming

Check    The adsorber must be checked visually for contamination and damage. To ensure long-term functionality, the valves in the adsorber should be checked. For this purpose, the adsorber is removed from the valve section and the valves are checked for proper functioning.
Cycle    Yearly
Measures    If the valves do not open and close, replace the adsorber with a new one to ensure full functionality.

5. Visual inspection of the adsorber

Check    The adsorber, including the connection, must be visually checked for damage. Damage can occur due to various environmental or operating conditions.
Cycle    Yearly
Measures    If the adsorber is damaged, it must be replaced completely to ensure full functionality.

6. Replacing the wearing parts

Check    The wearing parts, in particular the seals, the silica gel as well as the adsorber housing, must be checked with regard to their condition.
Cycle    Every two years
Measures    Regardless of the result of the test, it is recommended to replace the wearing parts by using the spare parts kit or a new adsorber to ensure smooth operation.


Contact and sales partner

Contact our contact persons and sales partners