Functional Description - Honeywell FN74C Einbauanleitung

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 appli-
cations 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. Functional description

The filter insert comprises an upper part and a lower combi-
nation section. When in the „filtering" position, the small upper
filter is closed so that the water can only pass through the
main filter from outside to inside. When the ball valve is
opened for reverse rinsing, the filter is pushed downwards
until the water supply to the outer side of the main filter is
stopped. Simultaneously, the water flow is opened to the
upper part of the filter. The water needed for cleaning the filter
passes through the upper sieve, the rotating impeller and the
main filter from inside to outside. By this means, the filter is
fully cleaned over its whole surface area at the full inlet pres-
sure. The filter automatically switches over to the operating
position when the ball valve is closed again.
The filter combination combines reverse rinsing filter and
pressure reducing valve in one appliance.
The integral pressure reducing valve functions on a balanced
force principle whereby the force exerted by a diaphragm is
balanced against the force of an adjustment spring. The inlet
pressure has no influence on opening or closing of the valve.
Inlet pressure fluctuation does not therefore affect the outlet
pressure.
3. Application
Medium Water
Inlet pressure Maximum 16.0 bar
Outlet pressure 1.5 - 6.0 bar
The filter is constructed for drinking water installations. In
case of a process water application the filter has to be proven
individually.
4. Technical data
Installation position Vertical or horizontal,
with filter bowl downwards
Operating pressure Minimum 1.5 bar
Operating temperature Maximum 30 °C
Connection size / ", 1", 1
3
4
Honeywell GmbH
GB
/ "
1
4
5. Scope of delivery
The filter combinations FK74C and FKN74C comprises:
• Housing with pressure gauge
• Spring bonnet with adjustment knob
• Valve insert complete with diaphragm and valve seat
• Rotatable connector piece (FK74C only)
• Threaded union connectors (FK74C only)
• Fine filter in clear filter bowl
• Ball valve with drain connection
• Double ring wrench
The fine filters F74C and FN74C comprises:
• Housing with pressure gauge
• Threaded connections
• Rotatable connector piece (F74C only)
• Fine filter in clear filter bowl
• Ball valve with drain connection
• Double wring wrench
6. Options
FK74C-...AA =Filter mesh size 100 μm, incl. rotatable
connector piece DA74C with threaded male
connections
FK74C-...AC =Filter mesh size 50 μm, incl. rotatable connector
piece DA74C with threaded male connections
FK74C-...AD =Filter mesh size 200 μm, incl. rotatable
connector piece DA74C with threaded male
connections
Connection size
FKN74C-1A = Filter mesh size 100 μm; rotatable connector
piece DA74C has to be ordered separately - see
accessories
FKN74C-1C = Filter mesh size 50 μm; rotatable connector
piece DA74C has to be ordered separately - see
accessories
F74C-...AA = Filter mesh size 100 μm, incl. rotatable
connector piece DA74C with threaded male
connections
F74C-...AC = Filter mesh size 50 μm, incl. rotatable connector
piece DA74C with threaded male connections
F74C-...AD = Filter mesh size 200 μm, incl. rotatable
connector piece DA74C with threaded male
connections
Connection size
FN74C-1A = Filter mesh size 100 μm; rotatable connector
piece DA74C has to be ordered separately - see
accessories
FN74C-1C = Filter mesh size 50 μm; rotatable connector
piece DA74C has to be ordered separately - see
accessories
6 MU1H-1149GE23 R0710