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Gas filter maintenance
WARNING: Before opening the filter, close the manual cutoff valve downstream the filter and bleed the gas; check
that inside the filter there is no pressurised gas.
To clean or replace the gas filter, proceed as follows:
6
5
3
Pressure taps
Prese di pressione
3
p
0
2
e
1
0
3
p
e
Check the filter at least once a year!
Change the filter if the pressure difference between pressure connection 1 and 3 (Fig. 1-Fig. 3)is p > 10 mbar.
Change the filter if the pressure difference between pressure connection 1 and 3 (Fig. 1-Fig. 3) is twice as high
compared to the last check.
You can change the filter without removing the fitting.
1
Interrupt the gas supply closing the on-off valve.
2
Remove screws 1 ÷ 4 using the Allen key n. 3 and remove filter cover 5 in Fig. 5.
3
Remove the filter 6 and replace with a new one.
4
Replace filter cover 5 and tighten screws 1 ÷ 4 without using any force and fasten.
5
Perform leakage and functional test, p
In-line gas filter
To clean or remove the filter, proceed as follows:
1 remove the cap unscrewing the fixing screws (A);
2 remove the filtering cartridge (B), clean it using water and soap, blow it
with compressed air(or replace it, if necessary)
3 replace the cartridge in its proper position taking care to place it
inbetween the guides as not to hamper the cap replacement;
be sure to replace the "O" ring into its place (C) and replace the cover
fastening by the proper screws (A).
PART V: MAINTENANCE
Gas filter included in the valve body
2
MB-DLE
405..412
1
0 Filter cover
0 CoperFKLR GHO ¿OWro
0
1, 3, 4 , 6 Screw plug G 1/8
1,3,4,6 TDSSR D YLWH *
2 2 Meter connection
2 AWWDFFR PLVXrDWRre
5 Screw plug M14
5 TDSSR D YLWH 0
E
5
p
p
a
Br
6
5
p
p
a
Br
= 360 mbar.
max.
5
3
2
D
C
F
B
A
Pressure taps
Prese di pressione
0
2
p
e
2
p
e
A
38
0
MB-DLE
415 - 420 B01
1
0, 1, 2, 3, 4, 5
Screw plug G 1/8
7DSSR D YLWH *
3
p
p
a
Br
5
3
p
p
a
Br
B
E
D
F
A
C
B
C
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