Honeywell GmbH
8
MU1H-1178GE23 R0816
GB
10.2.Maintenance
10.2.1.Replace filter insert
1. Close shutoff valve on inlet
2. Release pressure on outlet side (e.g. through water tap)
3. Close shutoff valve on outlet
4. Unscrew filter bowl
5. Remove filter insert
6. Insert new filter insert
• Put on the O-ring
7. Put new O-ring on filter bowl
8. Screw filter bowl in place
9. Slowly open shutoff valve on inlet
10. Slowly open shutoff valve on outlet
10.2.2.Replace filter mesh
1. Close shutoff valve on inlet
2. Release pressure on outlet side (e.g. through water tap)
3. Close shutoff valve on outlet
4. Unscrew filter bowl
5. Remove filter insert
6. Dismount filter insert
7. Replace filter mesh
8. Mount the filter insert
9. Put filter insert into filter bowl
10. Put new O-ring on filter bowl
11. Screw filter bowl in place
12. Slowly open shutoff valve on inlet
13. Slowly open shutoff valve on outlet
10.2.3.Replace ball valve
1. Close shutoff valve on inlet
2. Release pressure on outlet side (e.g. through water tap)
3. Close shutoff valve on outlet
4. Unscrew discharge connection
5. Remove ball valve
6. Screw in new ball valve
7. Screw in discharge connection
8. Slowly open shutoff valve on inlet
9. Slowly open shutoff valve on outlet
11. Disposal
• Housing and filter bowl made of ductile cast iron (EN-GJS-
400-15), coated with PA (polyamide)
• Inner parts made of stainless steel, red bronze, brass and
plastic
• Fine filter made of stainless steel
Observe the local requirements regarding correct waste
recycling/disposal!
12. Troubleshooting
13. Flow Diagram
* 2 filters parallel
Problem
Cause
Remedy
Too little or no water pressure
Shutoff valves upstream or downstream
from filter not fully open
Open the shutoff valves fully
Filter mesh dirty
Reverse rinsing
Filter is not fitted in flow direction
Fit filter in flow direction
Increased differential pressure
between inlet and outlet pressure
gauge
Reverse rinsing interval is exceeded
Reverse rinsing
High degree of dirt in the water
Reverse rinsing
Decrease reverse rinsing interval
Replace filter sieve
1
5
50
100
10
0,01
0,05
0,5
0,1
1
5
10 [bar]
500
1000
[m
3
/h]
2xDN100*
2xDN80*
DN100/125
DN80
DN65
Pressure drop
Flow rate
