Assembly; Start-Up; Reverse Rinsing - Honeywell F74CS Einbauanleitung

without pressure reducing valve
F74CS-...AA = With rotatable connector piece, filter mesh
size 95/110 µm
F74CS-...AC = With rotatable connector piece, filter mesh
size 50 µm
F74CS-...AD = With rotatable connector piece, filter mesh
size 200 µm
Connection size
FN74CS-1A = Retrofit version without rotatable
connector piece, filter mesh size 95/
110 µm

7. Assembly

7.1. Installations Guidelines
• The installation site has to be frost-proof and the protection
of the device from chemicals, paints, detergents, solvents
and their vapours and environmental influences must be
guaranteed.
• Install in horizontal or vertical pipework with filter bowl
downwards
- This position ensures optimum filter efficiency
• Install shutoff valves
• Ensure good access
- Pressure gauge can be read off easily
- Degree of contamination can be seen with clear filter
bowl
- Simplifies maintenance and inspection
• It is recommended that a straight section of pipework at
least five times the nominal valve size is provided after the
filter combination (according to DIN EN 806, part 2)
• Fit immediately after water meter
7.2. Assembly instructions
1. Thoroughly flush pipework
2. Install rotatable connector piece
• Note flow direction
• Install without tension or bending stresses
When connecting to an existing flange of another make
ensure that the inlet flow is through the outer ring of
holes. If this is not so, the whole connection piece must
be installed the other way round, even if the arrow does
not then indicate the actual flow direction.
3. Install filter with sealing to rotatable connector
4. Tighten the connecting nuts (7Nm)
5. Screw in discharge connection
7.3. Discharge of reverse rinsing water
The reverse rinsing water must be routed to the drain channel
in such a way that no backwater can occur.
To do this there are 3 options:
1. Direct connection:
• Connector DN 50/70 as well as the necessary pipes
and siphon (3 elbows 90°) in DN 70.
2. Discharge into floor drain
MU1H-1156GE23 R1111
GB
3. Drain into open container.
Filter size
1/2" and 3/4"
1" and 1 1/4"
*at 4 bar inlet pressure and 3 x 3 seconds reverse rinsing
duration

8. Start-up

8.1. Setting outlet pressure (FK74CS/FKN74CS
only)
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

8.2. Reverse rinsing

During reverse rinsing, an inlet pressure of at least 1.5 bar is
required. The reverse rinsing interval depends on the degree
of dirt in the water. At the latest every 2 months, reverse
rinsing should be carried out according to DIN 1988, Part 8.
To ensure convenient and regular adherence to the reverse
rinsing interval, we recommend installing an automated
reverse rinsing system Z74S-AN (see accessories).
Filtered water can also be tapped during reverse
rinsing.
If reverse rinsing water is not to be discharged via a direct
connection, a collecting container must be positioned
beneath before reverse rinsing.
1. Open ball valve by turning the reverse rinsing handle to
the stop
• Handle must be upright
• The patented reverse rinsing system starts
2. Close ball valve again after approx. 3 seconds. Repeat
procedure three times
• If the filter is extremely dirty, the procedure may have to
be repeated additional times
With aid of the memory ring, the next deadline for
manual reverse rinsing can be booked.
10
Reverse rinsing volume*
12 litre
15 litre
Honeywell GmbH