Unigas KPBY70, Manual Of Installation - Use - Maintenance

Page: 48 / 193

PART IV: MAINTENANCE
48
12.3 Removing the filter in the MULTIBLOC DUNGS MB-DLE 415 - 420 B01 1” 1/2 - 2”
z
Check the filter at least once a year!
z
Change the filter if the pressure difference between pressure connection 1 and 2 (Fig. 35-Fig. 36)
Δ
p> 10 mbar.
z
Change the filter if the pressure difference between pressure connection 1 and 2 (Fig. 35-Fig. 36) 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. 37).
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.
A
B C
Fig. 35
Fig. 36
Fig. 37
2 3 4 23 4
1
5
5
0
1
3
p
e
0
4
p
a
5
p
Br
0 3
p
e
4
p
a
6 1
5
p
Br
2
B
A
C
D
E