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3.6.3
Replacing the rechargeable battery
Grundfix Plus Control backflow trap type 3
Set the emergency lock to "AUF" (ON) position.
▶
The water drains away.
▷
Display indication: [Test NRV - closed]
▶
Open the motor-powered flap by pressing button T2.
▶
Remove the test funnel.
▶
Screw in the brass plug.
▷
The following message appears on the display after the suc‐
cessful procedure [Maintenance / Correctly performed] .
The control returns to [Normal operation] after approx. 60 sec‐
onds.
Alternatively, normal operation can be activated using
buttons T1 and T3.
DANGER!
Risk of electric shock!
Replacement of the rechargeable battery should only be
carried out by specialist companies.
Remove mains plug before opening the casing.
If the rechargeable battery is faulty, it must be replaced. This will be
shown on the display using the notice [Battery error / Replace battery] .
Handling
39
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