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7
Maintenance
Comply with EN 13564 during maintenance.
The dismantling/installation of the pump is described under installation ("Remove pump(s)", page 36).
7.1
Inspecting the operating valve
An inspection of the operating valve of all Ecolift SWAs must be carried out monthly by a competent expert.
To check the correct operation of the operating valve, open and close the emergency closure lever several times.
7.2
Maintenance interval
The system must be maintained regularly by a competent person. The intervals may not be longer than:
1/2 year for apartment buildings or in the commercial sector
1 year in detached or semi-detached houses
The maintenance interval is valid for all maintenance activities described below.
A maintenance record with details of all the work carried out and the main data must be prepared for each maintenance
inspection. If defects are found that cannot be corrected, the competent person must notify the system owner/operating com-
pany immediately.
7.3
Leak test of the backwater flap
Move the mechanical emergency closure lever to the
„CLOSED" position.
To close the motor-driven flap, press the „Flap" button.
Unscrew the drain plug.
Screw the testing funnel in place.
Pour water into the funnel up to the test pressure height
of 10 cm (marking) and observe the water level for
10 min. If the water level is below the marking, add water
up to the marking.
The backwater valve is considered watertight if no more
than 0.5 l of water has to be refilled during the specified
maintenance period.
Note the result in the log book or maintenance log.
Unscrew the testing funnel.
Screw in the drain plug including the seal.
Move the mechanical emergency closure lever to the
„OPEN" position.
Check whether the drain plug is tightly sealed (no gap).
Open the motor-driven flap by pressing the „Flap" button.
7.4
Functional check
7.4.1
Functional test at the control unit
Check the control unit display for possible error messages.
Manual function test at the control unit
Close the flap (sewer end) by pressing the „Flap" button.
Open the inlet for clean water.
Check that the pump is pumping.
If the pump is pumping, stop the inlet for clean water.
Wait until the pumping process has ended. If there are 2 pumps, repeat the procedure with the other pump.
Open the flap by pressing the „Manual operation" button on the control unit.
Check the function of the emergency closure lever by briefly closing and re-opening it.
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Installation and operating instructions
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