Altitude; Adjustment Of Gas Pressure - ABB SafeRing Product Manual

1,45
1,4
1,35
1,3
1,25
1,2
1,15
1,1
1,05
1

13.2 ALTITUDE

Max height above sea level for installation without reducing
gas pressure is 1500 meters. In the interval from 1500 to
2500 meters, gas pressure has to be reduced according to
the above figure. For installation above 2500 meters, please
contact ABB for instructions.
13.2.1 ADJUSTMENT OF GAS PRESSURE IN HIGHER
ALTITUDES
Remove the front cover in order to get access to the top of
the manometer. On top of the manometer, a screw is situa-
ted. Open this screw carefully until the arrow starts moving.
When the movement stops, tighten the screw again. Now the
pressure is equalized and unless there is a leak (which is very
unlikely) the arrow will be positioned at the correct level.
Altitude
30 C
o
SF -gas temp
6
20 C
o
C
o
0
5
10 C
o
10
15
20
25
30
35
40
Top screw for adjusting
pressure in higher altitudes
Absolute filling
pressure
mbar
1305
1328
1352
1376
1400
1424
1448
1472
1496
23