1.
Safety Guidelines
1. Follow the installation instructions.
2. Use the appliance
• according to its intended use
• in good condition
• with due regard to safety and risk of danger.
3. Note that the appliance is exclusively for use in the applica-
tions detailed in these installation instructions. Any other use
will not be considered to comply with requirements and would
invalidate the warranty.
4. Please take note that any assembly, commissioning,
servicing and adjustment work may only be carried out by
authorized persons.
5. Immediately rectify any malfunctions which may influence
safety.
2.
Application
For Honeywell filters F74CS, FN74CS
3.
Assembly
1. Close shutoff valve on inlet
2. Close shutoff valve on outlet
3. Release pressure on outlet side (e.g. through water tap)
4. Open housing plug
5. Unscrew filter cup and guide piece
• Use plastic wrench ZR74CS
6. Put slotted ring on guide piece
7. Fit guide piece
8. Screw in filter bowl hand-tight (without tools)
9. Assemble valve insert
10. Press in diaphragm with finger
11. Insert slip ring
12. Screw in spring bonnet with spring, setting screw and spring
plate (30Nm)
Before inserting the cover hood, make sure the square cut-
out (hood) is aligned with the square drive (spindle).
13. Assemble adjustment handle
4.
Start-up
4.1. Setting outlet pressure
Set outlet pressure min. 1 bar under inlet pressure.
1. Close shutoff valve on inlet
2. Close shutoff valve on outlet
3. Release pressure on outlet side (e.g. through water tap)
4. Slacken tension in compression spring
• Lift adjustment handle
• Turn adjustment handle counter clockwise (-) until it does
not move any more
5. Slowly open shutoff valve on inlet
6. Turn adjuster knob until the manometer shows the desired
value.
• Turn clockwise = increase pressure on outlet side
• Turn counter-clockwise = reduce pressure on outlet side
7. Push the adjuster knob down and latch it in to activate the
locking mechanism
8. Slowly open shutoff valve on outlet
MU1H-1045GE23 R0320
GB
5.
Maintenance
We recommend a planned maintenance contract with
an installation company
In accordance with DIN 1988, part 8, the following measures must
be taken:
5.1. Inspection
Interval: once a year
1. Close shutoff valve on outlet
2. Check outlet pressure using a pressure meter when there is
zero through-flow
• If the pressure is increasing slowly, the valve may be dirty
or defective. In this instance, carry out servicing and
cleaning
3. Slowly open shutoff valve on outlet
5.2. Maintenance
Frequency: every 1-3 years (depending on local operating
conditions)
To be carried out by an installation company
1. Close shutoff valve on inlet
2. Close shutoff valve on outlet
3. Release pressure on outlet side (e.g. through water tap)
Caution !
There is a spring in the spring bonnet. It may cause injuries
if the spring is derailing.
• Make sure tension in compression spring is slak-
kened!
4. Slacken tension in compression spring
• Lift adjustment handle
• Turn adjustment handle counter clockwise (-) until it does
not move any more
5. Loosen cover cap with a screw driver
6. Pull out the adjustment handle
7. Unscrew spring bonnet
• Use plastic wrench ZR74CS
8. Remove spring and setting unit
9. Remove slip ring
10. Remove valve insert with a pair of pliers
11. Unscrew filter bowl
• Use plastic wrench ZR74CS
12. Pull guide piece with O-ring out downwards
13. Remove slotted ring
14. Check that sealing ring, edge of nozzle and slotted ring are in
good condition, and if necessary replace the entire valve
insert
15. Reassemble in reverse order
Before inserting the cover hood, make sure the square cut-
out (hood) is aligned with the square drive (spindle).
Press in diaphragm with finger before inserting slip ring
Screw in spring bonnet (30Nm)
Put O-ring on filter bowl
Screw in filter bowl hand-tight (without tools)
16. Set outlet pressure
4