PART III: OPERATION
42
Adjusting the gas valves group and removing the filter
1
2
5
3
4
3
5
0
2
4
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
max.
= 360 mbar.
6
Pay attention that dirt does not fall inside the valve.
Check the filter at least once a year!
Change the filter if the pressure difference between pressure connection 1 and 2 (Fig. 1-Fig. 2)
p> 10 mbar.
Change the filter if the pressure difference between pressure connection 1 and 2 (Fig. 1-Fig. 2) 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 ÷ 6 (Fig. 3).
3
Change filter insert.
4
Re-insert filter housing, screw in screws 1 ÷ 6 without using any force and fasten.
5
Perform leakage and functional test, p
max.
= 360 mbar.
6
Pay attention that dirt does not fall inside the valve.
MULTIBLOC DUNGS MB-DLE 405..412
DUNGS MB-DLE 415 - 420 B01 1” 1/2 - 2”
1
2
5
3
4
6
5
3
4
5
3 4
6
6
2
1
0
Fig. 27
Fig. 28
Fig. 29
Fig. 30
Fig. 31
Fig. 32
B
A
C
D
E
A
C
B
D
E
Summary of Contents for P75R
Page 53: ...Service manual AZL2x LMV2x 3x Burner Management System M12916CD Rev 3 4 03 2023...
Page 60: ...8 Parameters level heating engineer...
Page 102: ...50 ERROR CODE TABLE...
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