Renfert POWER steamer 1 Manuel D'utilisation page 40

6.4 Descaling
Caution: The descaling solution is corrosive!
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Wear protective goggles and protective gloves during descaling!
In the event of skin contact, rinse immediately with water. Observe the safety data sheet.
Caution: The descaling solution „Renfert POWER steamer descaler" is a concentrate. Use only in
diluted form as described below. Use without dilution will damage the device.
Remove cleaning liquid residue from work surfaces immediately with a damp cloth and rub dry
with a dry cloth.
Only use the Renfert descaling solution "Renfert POWER steamer descale" for descaling as it
provides corrosion protection for the pressure tank.
Do not use citric acid for descaling. If filling while warm (residual heat or residue when heating),
citrate powder is formed that clogs the pipes and equipment, causing failure of the unit.
Descaling solutions that are not authorized could damage the pressure tank and mechanical com-
ponents, quickly causing complete failure.
The warranty is voided if a descaling solution is used that is not approved.
Only perform descaling if the pressure tank has completely cooled down.
Do not operate the unit during descaling. This could cause dissolved particles of calcium deposit
to enter the pipes and equipment, e.g., the solenoid valve, and lead to failure of the unit.
Regular removal of sludge and loose calcium deposits by rinsing reduces the need to use chemicals�
However, it is not possible to entirely prevent a layer of calcium from forming�
If the unit detects calcification despite rinsing or shortly after rinsing (see Chap. 5.5), the pressure tank
should be de-scaled as soon as possible�
⇒ Disconnect the unit from the mains power supply and allow it to cool down�
⇒ Rinse the pressure tank with water and using a cleaning brush until the water runs clear and/or no fur-
ther large pieces of calcification crust are discharged from the service opening (see Chap. 6.3).
⇒ Close the service opening (see Chap� 4�3)�
⇒ Fill the water tank with 1 l of water�
⇒ Then fill with 1 l of Renfert descaling solution.
Caution: Danger of chemical burns due to descaling solution spraying out.
Depending on the existing amount of calcium deposits, a strong chemical reaction can occur
causing bubbles and foam to develop.
This can cause the descaling solution to spray out.
Do not refill more than the specified quantity of water.
⇒ After approx. 15 minutes, slowly fill the unit with a further 0.6 - 0.8 liters of water. If foam develops, only
continue to fill after the foam has subsided.
⇒ Allow the descaling solution to soak in�
Recommended exposure time: 2 - 4 hours
⇒ After the exposure time has come to an end: carefully open the service opening and drain the descaling
solution�
If the resulting descaling is not sufficient, repeat the procedure.
⇒ Rinse the pressure tank several times with water and brush out using the cleaning brush until the water
runs clear and/or no further large pieces of calcification crust are discharged from the service opening
(see Chap� 6�3)�
If the resulting descaling is not sufficient, repeat the procedure.
⇒ Close the service opening again (see Chap� 4�3)�
⇒ If required, restore conductivity (see Chap� 6�3�2�
6.5 Replacing the seal of the service cap
The seal of the service cap (13, Fig� 1) is a wear part and available as a spare
part (see Chap� 6�9)�
When replacing the seal, do not use any sharp or pointed objects and ensure
that the new seal is seated correctly�
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Fig. 17