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2. General
2.1 Application
The KESSEL Staufix FKA backwater
valve, designated as a DIN EN 13564
Type 3 backwater valve, is designed to
be installed in wastewater drainage pipes
with or without raw sewage (WC connec-
tion). The backwater valve prevents was-
tewater from backing up the drainage
pipe during backwater / flooding. The
FKA should be kept in good operating
condition and should be accessible at all
times. During normal operating condi-
tions, the motorized backwater flap as
all as the manually lockable backwater
flap are in the open position. The system
is equipped with an optical probe that is
automatically closed when backwater is
detected. When the backwater occurren-
ce is over, the motorized flap opens itself
automatically. The system is also equip-
ped with a second backwater flap that
can be manually closed and locked using
the manual closure and locking lever.
In addition, the manually operated back-
water flap offers a ‘neutral’ position (the
unit is shipped with the flap in the ‘neutral’
position). During the construction phase,
the installed Staufix FKA offers backwa-
ter protection with the manually operated
flap which is in the free hanging position –
this protection is offered even before the
system is connected to electrical power.
DIN EN 12056 and DIN EN 13564 should
be followed which regulated the drainage
of building and use of backwater valves..
2.2 Contents of Delivery
The Staufix FKA delivery consists of a
body / housing with cover including the
emergency closure lever (closure lever not
included with a Controlfix®), and installati-
on and operating manual (Article Number
010-842), a see-thru test funnel as well as
an Electrical package (separate box con-
taining the electrical parts of the system).
Please carefully store this additional ac-
cessories before they are installed to the
system.
The electrical package consists of:
1. The optical probe as well as the motor
which operates the motorized backwa-
ter flap.
2. A control unit (230 V, 50 Hz, Protection
Class IP 54) with back up battery feature
(twin 9-volt batteries) – this offers an ad-
ditional 2 hours of operation in the case
of a power outage. Also included is the
installation and operational manual for
the control unit (art.- nr.016-003).
2.3 Pre-installation tips
During the building’s construction phase
only the body of the system will be in-
stalled and connected to the building’s
drainage pipe (as discussed in Section 3).
Normally at this time power is not available
in the building meaning the Staufix FKA’s
motor is not in service (see chapter 4) and
commissioning (see chapter 5) cannot yet
take place.
The electrical components of the system
(motor, optical probe and control unit)
should not be connected until the system
is commissioned (after the major const-
ruction phase of the building is complete).
It is important that the electrical compo-
nents of the Staufix FKA (contained in the
electrical package) be properly stored
(safe and dry) until they are ready for in-
stallation.
A function test according to point 4.3
should be conducted before commissio-
ning.
During the time period after the ins-
tallation of the Staufix FKA body and
before the Staufix FKA is connected to
the building’s power source, the follo-
wing Staufix FKA settings or positions
are possible:
A)Locked position (Ill. 1 – manually ope-
rated backwater flap is in the closed and
locked position). The closure lever should
be pushed down into the locked position.
This provided a full lockage or closure of the
building’s wastewater pipe. In this position
no drainage fixtures connected to the Stau-
fix FKA can be drainage as the backwater
flap is in the closed (locked) position. With
the position the building is fully protected
against backwater flooding.
B)Fully open position (Illustration 2 – back-
water flap is in the fully open position). The
red closure lever should be in the open po-
sition. The backwater valve currently proved
no backwater protection to the building and
any wastewater from the building can fre-
ely flow through the backwater valve. In this
position none of the fixtures connected to the
Staufix FKA are protected from backwater!
C)Construction phase position (Ill. 3 – back-
water flap is in the vertical free handing po-
sition). The red manual closure lever is in
the ‘open’ position and the emergency clo-
sure device should be in the ‘neutral’ posi-
tion. In this ‘neutral’ setting the manually
operated backwater flap is in the vertical
(free hanging) position and acts as a single
flap backwater protection valve for the buil-
ding. The motorized backwater flap is not
in service and provides no protection. In
this position, drainage fixtures connected
to the Staufix FKA can be drained and at
the same time are protected against back-
water.
Before the Staufix FKA is fully operable,
we recommend the following settings:
- If it is certain that no drainage fixtures
connected to the Staufix FKA will be used
during the building phase, both the ope-
rational and the emergency backwater
flaps should be in the closed position (see
paragraph A above). If the drainage fixtu-
res connected to the Staufix FKA need to
be in service during the building phase,
both the operational and the emergency
backwater flaps should be in the tempo-
rary open (see paragraph C above).
- It should be noted that the backwater
flap will be prevent backwater (be water-
tight) only if the wastewater contains no
debris or raw sewage.
Illustration 2
Illustration 3
Illustration 1
Emergency flap closed and locked by hand
Operational flap in the open position
Backwater flap in the free hanging position
Summary of Contents for 84000S
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