ITRON G16 - Commissioning Procedures; Maintenance Information

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, Itron, Alle Rechte vorbehalten
, Dokument:
Instruction_manual_G10 to G100__2017
-02-27.docx
 For the connecting nut of the studs, the following maximum tightening torque apply for
hard gaskets:
Double pipe
Single pipe
ACD
G10/16
Connection
Thread G1¾“A
(DN32)
Thread G 2"A
(DN40)
Thread G
2¾" (DN40)
-
Distance [mm]
250/280
250/280/290/300
-
-
Torque
110 Nm
140 Nm
140 Nm
-
G25
Connection
Flange DN50
Thread G2 ½"A
Flange DN50
-
Distance [mm]
335
335
-
-
Torque
85 Nm
170 Nm
85 Nm
-
G40
Connection
Flange DN 65 (M16)
Flange DN 80 (M16)
Flange DN 65
(M16)
Flange DN 80
(M16)
Distance [mm]
430
430 / 500 / 510
-
-
Torque
85 Nm
85 Nm
85 Nm
85 Nm
G65
Connection
Flange DN80
-
Flange DN80
-
Distance [mm]
500V/640V/680H
-
-
-
Torque
85 Nm
-
85 Nm
-
G100
Connection
Flange DN100
-
Flange
DN100
-
Distance [mm]
675V/710V
-
-
-
Torque
85 Nm
-
85 Nm
-
For other gasket types please refer to the affected standards. The screws of the flange
connections have to be adequate-sized and to be tightened crosswise.
5. Commissioning:
 Caution is necessary when commissioning the meter after installation. The max.
operating pressure and max. flow rate are marked on the name plate. Never exceed
these values.
 Open the outlet valve (if installed) completely. Then open the inlet valve to pressurize
the meter very slowly and avoid pressure pulses. Bring the valve to a fully opened
position.
 Finally check the tightness of all connections.
6. Maintenance – Diaphragm gas meters are maintenance-free:
 When the meter is commissioned properly and the operating conditions stay normal, no
additional maintenance is necessary during the life of the meter.
 Dust and dirt should be removed with solvent and alcohol-free products. Please note
that the meter has to be protected against unusual mechanical, thermal and chemical
damages.