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D

 

APPLICATION MANUAL   

4 - Covering  >> Using Arma-Chek D Covering

Covering Of Insulated Objects >> Using Arma-Chek D Covering

VESSEL DOME END

When covering an Armafl ex-insulated vessel dome end 
with Arma-Chek D covering material it is necessary to 
cut out segments. (Use enough segments to ensure that 
the material can be applied without wrinkles.)
1.  Determine the arc length of the vessel dome end us-
   ing a tape measure.
2.  Calculate the circumference U = arc length x 

π

 and 

   divide the circumference by the number of segments 
   to be used.
3.  Draw the fi rst segment on the covering material.

   

  

   

Version 1:

 Cut out the segments adding an overlap 

   of 50mm to one side (segment to segment). All-over 
   adhesive coverage should also be used on the over-
   lap. On outdoor applications these seams should be 
   secured with the Arma- Chek Mastic.

   

Version 2:

 Draw the outline of the segments without 

   the 50 mm overlap. Using all-over adhesive coverage 
   and butting the segments against each other, apply 
   the  covering  material  to  the  insulation  material. 
   Secure the seams
   - with  Arma-Chek  D  self-adhesive  tape  on  indoor 
     applications
   - with 100 mm wide strips of the covering material, 
     applied  with  all-over  adhesive  coverage,  on    out-
     door applications.
4.  Make a template by gluing the fi rst segment onto a 
   piece of cardboard, for example.
5.  Now use this template to draw and cut out the other 
   segments.
   In general an overlap of at least 100 mm should be 
   added  which  is  then  feathered  and  applied  to  the 
   Armafl ex-insulated  vessel  dome  end  using  all-over 
   adhesive coverage.

6.  To achieve a tidy fi nish, a circular piece of the cover-
   ing  material  can  be  used  to  cover  the  ends  of  the 
   selfadhesive tape or strips in the middle of the vessel 
   dome end.
7.  Finally, covering material is applied to the Armafl ex
   insulated vessel (jacket), beginning in the concentric 
   100 mm overlap of the vessel dome end. When cov-
   ering the vessel observe a vertical overlap of 50 mm 
   for the covering material.
8.  In the area where the coverings of the vessel jacket 
   and vessel dome end overlap, an aesthetic fi nish can 
   be  achieved  by  applying  Arma-Chek  tape  (indoor 
   appplications)  or  strips  of  the  Arma-Chek  covering 
   material (outdoor applications).

   

  

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Summary of Contents for Arma-Chek D

Page 1: ...application manual ARMA CHEK D application manual application manual ARMA CHEK D D...

Page 2: ...application manual ARMA CHEK D ARMACELL UK LTD D APPLICATION MANUAL D...

Page 3: ...ways use the correct speci ed Arma ex adhesives Do not assume they will always do the same job If in doubt consult the Armacell technical department local agent On external installations always ensure...

Page 4: ...ntire surface smoothing the covering round making sure there are no air pockets present Always check for alignment and avoid creases and crinkles during that time e If the surfaces are left to dry too...

Page 5: ...clean the seams and joints use the Arma ex cleaner Peel back release paper and cover the entire seam line with an additional 50 mm overlap where appli cable applying pressure during the installation C...

Page 6: ...General Working with Arma Chek D ARMACELL UK LTD D APPLICATION MANUAL 1 General Working with Arma Chek D 4 D...

Page 7: ...d x using the factory applied adhesive strip 5 Use correct Arma ex adhesive to secure the longi tudinal seam Apply on one side only Always remember to stagger longitudinal seams 6 Secure the butt end...

Page 8: ...seam of the throat using 20 mm wide Arma Chek S Butyl Tape Always ensure the tape is applied such that a watershed is achieved Note In some circumstances it may be preferable to fabricate segment ttin...

Page 9: ...ARMAFLEX TUBE Note Yellow lines indicate where cuts are to be made Always follow instructions related to the application of pre coated Arma Chek S tubes as stated in the above procedures relating to a...

Page 10: ...over the tting The oversize tting should extend by the wall thickness of the over sized fabrication minimum of 25 mm is required over the adjoining insulation On the butt end of the adjoining insulat...

Page 11: ...ness 1 mm 1 This table is valid for ambient conditions of 5 C For lower applica tion temperatures the rigidity and tension of the sheet material can increase thus lead ing to other conditions than men...

Page 12: ...e by drawing the half elevation on the edge of the Arma Chek sheet 4 Completed Arma Chek pipe reducer made of factory coated Arma Chek Dsheet material with a straight nish ECCENTRIC REDUCER FLAT BACK...

Page 13: ...meter of the connected pipes 2 x ins thickness Note 5 mm must be added to the jacket height deter mined 5 mm must be subtracted from all measur ments for openings 2 Cross section A A Determine the cir...

Page 14: ...borders directly on the ange with a 100 mm wide strip of Arma ex Determine the dimensions of the ductwork surface to be insulated On bends the inner throat and outer dimensions are determined using st...

Page 15: ...HANGING DUCTWORK Use the Arma x duct supports to optimize the preven tion of thermal bridging and simplify the hanging of duct work VESSELS 1 First insulate the vessel jacket with Arma Chek D pre coat...

Page 16: ...Insulating with Arma Chek D Using Pre Covered Sheets ARMACELL UK LTD D APPLICATION MANUAL 3 Insulating with Arma Chek D Using Pre Covered Sheets 14 D...

Page 17: ...are no gaps present in all the seams and joints Note Refer to the Arma ex Installation Manual at all times 2 For Arma Chek D covering adhesive is only required on the Arma ex and on the overlapping ar...

Page 18: ...ongitudinal seam of the covering with the correct Arma ex adhesive Continue to install the covering along the ductwork allowing for a 50 mm overlap on all butt joints DUCTWORK BENDS IRREGULAR SHAPES 1...

Page 19: ...seg ment of the assembled segment bend and determine the circumference 2 Transfer the circumference measurement U to the Arma Chek Dcovering material and draw in a line dividing it in half Now add a 5...

Page 20: ...pipe and transfer this to the covering material Halve the circumference 3 Transfer segment width for the throat seam to each end of the circumference drawn and the segment width for the back of the be...

Page 21: ...a pair of scissors OFFSET ANGLES 1 Determine the circumference U of the Arma ex in sulated offset angle the maximum a and minimum b height and the Arma ex insulated outer diameter of the pipe D to wh...

Page 22: ...material to the insulation material Secure the seams with Arma Chek D self adhesive tape on indoor applications with 100 mm wide strips of the covering material applied with all over adhesive coverag...

Page 23: ...eathering overlap length minimum equal to the insulation thickness of the non covered area Method 2 1 Measure the following diameters of the end cap a smaller insulated outer diameter of insulated bod...

Page 24: ...ARMACELL UK LTD D APPLICATION MANUAL 4 Covering Using Arma Chek D Covering Covering Of Insulated Objects Using Arma Chek D Covering 22 D...

Page 25: ...application manual ARMA CHEK D ARMACELL UK LTD APPLICATION MANUAL D D...

Page 26: ...ightweight and easy to apply insulation system resistant to mechanical impact D D Arma Chek R The insulation system with extra system security that minimises the risk of under insulation corrosion UIC...

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