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Conversion to a different gas category
42
Instruction manual DR-FC
4
is
Conversion of gas control valve in DR-FC 25 through 60
13. Remove the restrictor (5, incl. gasket).
14. Select the correct restrictor (including gasket) from the conversion set using
the gas table
(3.4.3 "Gas data")
. The restrictor diameter is shown on the
restrictor.
Caution
If no restrictor diameter is stated in the gas table, then only the gasket from
the conversion set needs to be fitted.
15. Fit the restrictor (including the gasket) into the flange of the venturi.
Note
The lugs of the gasket must align exactly to the holes in the flange.
16. From the conversion set, take the "small" sticker that indicates the new
(modified) gas category.
17. Affix the sticker over the existing sticker on the gas control valve.
This makes it clear that the gas control valve no longer functions on the gas
for which it was originally adjusted.
18. Fit the gas control valve onto the flange of the venturi (6, four cross-head
screws).
19. Refit the connector (2) to the gas control valve.
20. Insert the hose with code "H" into the coupling (3) on the offset adjuster and
insert the hose with code "L" into the coupling (4) next to the test point on
the gas control valve.
21. Re-fit the three-part gas coupling (1).
22. Check the supply pressure
(3.11.1 "Procedure for checking the supply
pressure")
, the CO
2
value
(3.11.2 "CO
2
-adjustment")
and the switching
pressure
(3.11.3 "Switching pressure measurement")
.
Legend
1.
3-part connector
2.
gas inlet connector
3.
offset adjustment coupling
4.
gas inlet coupling
5.
restrictor (incl. gasket)
6.
venturi flange
7.
test point
8.
gas control valve sticker
IMD-0796 R0
1
2
5
6
3
4
7
8
Summary of Contents for DR-FC 120
Page 2: ......
Page 4: ......
Page 6: ...4 Instruction manual DR FC gis...
Page 10: ...Table of contents 8 Instruction manual DR FC...
Page 58: ...Shutting down 56 Instruction manual DR FC 10 gis...
Page 70: ...Service program 68 Instruction manual DR FC 12 is...
Page 84: ...Service interval 82 Instruction manual DR FC 14 is...
Page 90: ...Warranty 88 Instruction manual DR FC 16 s...
Page 93: ...Instruction manual DR FC 91 is...
Page 96: ...Appendices 94 Instruction manual DR FC 17 is...
Page 98: ...Instruction manual DR FC 96...