SCHELL’s Frequently Asked Questions

Here we have listed the questions most often asked by our customers, together with their answers.

SWS Water Management System

The battery ensures the Server always has the current time and date, and lasts 8–10 years.

If power fails on the fitting, it closes automatically.

This range will vary depending on individual local factors (e.g. wall type, wall thickness, location of the SWS Server), so a definitive answer cannot be given here.

Recommended bus cable types:

YXYM 2x2x0.8
J-Y(St)Y 2x2x0.8
JH(St)H 2x2x0.8
A-2Y(L)2Y, A-2YF(L)2Y

For the SWS bus, the same requirements apply to cable connections as for a KNX installation.

No specific structure is required for the wiring. In particular, neither daisy-chain wiring nor star network wiring is specifically required.

A single section of cable can be up to 350 m in length. The total cable length must not exceed 1,000 m.

Each SWS bus mains adapter can power exactly one Water Management Server.

This behaviour is intentional and results from the special energy management functions used by battery-powered fittings. Simply press ‘Save’ and these fittings will also be integrated and then appear in the ‘All devices’ list.
Exception:
During the first commissioning procedure, battery-powered fittings with a wireless bus extender will appear in the ‘Devices found (n)’ list.

This means that these fittings have been detected but are assigned to a different Water Management Server.

Wash basin

Any industry-standard 10 A fuse, type B10, will be OK.

The distance between the mains adapter and the electronics should not exceed 10 m.

2 W

<0.3 W

The solenoid valve closes and stays shut.

A grub screw is located in the operating button on the side facing the wall or the side facing down in the case of horizontal SC actuations.
Use an Allen key to undo this screw.

In older models, you should replace the sealing head; check to ensure the spring is correctly seated. This spring creates the contact pressure on the valve seal.
With newer models, check to see if there is a spring underneath the operating handle. If this is the case, then you should replace the cartridge.

Clean the nozzle bore, the filter and the cartridge. Use the nozzle adjustment needle to adjust the flow time. Also replace the cartridge if necessary.

The SCHELL SC cartridge is equipped with a plunger that is moved by the pressure from the drinking water supply line. At the top of the SC cartridge is a small, water-filled chamber. When the cartridge is operated, this section of the cartridge empties and the plunger moves upwards. As water flows out, a portion of this water volume flows into the emptied top section and pushes the plunger down as it does so. When the plunger makes contact with the valve seat, the SC cartridge closes again.

There are no actual requirements for stagnation flushes for wash basin taps. However, these taps offer an excellent option for achieving simple and cost-effective flushes to prevent water stagnating. This works to counter the potential growth of bacteria in the piping system or sections of piping. Stagnation flushes are now established practice as an effective option not just for wash basin taps but also for showers and urinal flush systems.

With battery-powered fittings, a red flashing LED in the sensor window indicates that the battery is nearly empty.
With programmable fittings like PURIS E, VENUS E, CELIS E and MODUS E, a flashing red LED is also used to indicate programming mode.

Check the position of the positioning pin under the push button. The positioning pin can be used to restrict the rotary motion of the push button at 4 specific positions. Because this limits the amount of hot water used, for example, unsatisfactory mixing temperatures may then occur.
Replace the cartridge including the enclosed nipples.

You will need to use a corresponding extension set from SCHELL. (Not for WC COMPACT and Urinal COMPACT II: in this case, a custom extension will need to be made on site, using a metric threaded rod and screws.)

Accidental triggering can be caused by dirt on the sensor window.
Faulty triggering may also occur on very small wash basins because of their physical dimensions.
Fittings with a stagnation flush will trigger automatically 24 h after the last use to flush the line. If this is not required, the function can be deactivated in the program menu. Please go to the Products area to download operating manuals.

Yes, for some products, including PURIS E, VENUS E, CELIS E, MODUS E, Urinal EDITION E and AMBITION E. For LINUS series shower fittings and WC EDITION E flush valves, a power cable from an external mains adapter must be installed in the concealed box. The effort required will depend on the product type. Please contact a member of our team.

For large, non-standard wash basin holes with diameters of up to 55 mm, a tap hole rosette (order no. 76 063 06 99 can be used.

Thermal disinfection is listed as implementation measure for preventing bacterial growth. Prevention of bacterial growth is also required by law. If Legionella has been discovered in the piping system, this offers one way of removing the contamination, since Legionella is reliably killed off at high temperatures. Regulations require water at >70 °C to be drawn from tapping points for at least 3 minutes. This works to generate a high temperature throughout the entire drinking water system. This is noted as one possible countermeasure against Legionella in DVGW Worksheet W 551.

SCHELL electronic fittings can be operated at a flow rate of 1 gpm. In the case of SCHELL self-closing fittings, reducing the flow rate to 1 gpm affects adjustments to flow time. The flow time must be adjusted after installing a 1 gpm flow regulator.

Check the sensor range.
Is the sensor window clean? Is the sensor field clear? Are there any reflective surfaces in the sensor field? (Infrared taps cannot be used on stainless steel wash basins.)
Check the solenoid valve. (replace if necessary)
Check the electronics. (replace if necessary)

Check the water supply line:

is the water supply OK?
Are the angle valves open?
Are the pre-filters on the angle valve clear?
Have the backflow preventers been installed correctly?
Is the filter on the solenoid valve clear? (clean if necessary)

Standard programming methods are used here for the PURIS E, VENUS E, CELIS E and MODUS E, as well as electronic WC and urinal fittings. For detailed instructions, please see the operating manuals for these fittings, which can be downloaded from the Products area.

Shower

Clean the nozzle bore, the filter and the cartridge. Use the nozzle adjustment needle to adjust the flow time. Also replace the cartridge if necessary.

In older models, you should replace the sealing head; check to ensure the spring is correctly seated. This spring creates the contact pressure on the valve seal.
With newer models, check to see if there is a spring underneath the operating handle. If this is the case, then you should replace the cartridge.

A grub screw is located in the operating button on the side facing the wall or the side facing down in the case of horizontal SC actuations.
Use an Allen key to undo this screw.

The solenoid valve closes and stays shut.

<0.3 W

2 W

The distance between the mains adapter and the electronics should not exceed 10 m.

Any industry-standard 10 A fuse, type B10, will be OK.

The SCHELL shower panels are made from anodised aluminium sections and are therefore corrosion-resistant. This resistance is limited, however, in coastal outdoor areas. In these locations, ensure the materials are properly cared for by carrying out periodic, thorough cleaning of all surfaces.

There are several reasons for frequent battery changes. Check through the following list.

Check windows for soiling and replace as necessary if you find limescale round the edges or scratches. If fittings are in constant use, switch to mains operation.
Use high-quality, industry-standard batteries.
Check the battery compartment for moisture.
Use a larger battery compartment (01 853 00 99) with AA batteries instead of a 9 V block battery (not possible with all models).

Standard programming methods are used here for the PURIS E, VENUS E and CELIS E, as well as electronic WC and urinal fittings. For detailed instructions, please see the operating manuals for these fittings, which can be downloaded from the Products area. For the MODUS E, this feature – with or without stagnation flush – can only be selected via the article number.
For all models with CVD touch electronics, standard programming is used and via the USB programming adapter together with the eSCHELL software.

Yes, conversion is possible with the conversion kit 01 890 06 99.

Any industry-standard 10 A fuse, type B10, will be OK.

Clean the nozzle bore, the filter and the cartridge. Use the nozzle adjustment needle to adjust the flow time. Also replace the cartridge if necessary.

In older models, you should replace the sealing head; check to ensure the spring is correctly seated. This spring creates the contact pressure on the valve seal.
With newer models, check to see if there is a spring underneath the operating handle. If this is the case, then you should replace the cartridge.

A grub screw is located in the operating button on the side facing the wall or the side facing down in the case of horizontal SC actuations.
Use an Allen key to undo this screw.

The solenoid valve closes and stays shut.

<0.3 W

2 W

The distance between the mains adapter and the electronics should not exceed 10 m.

The flow time can be limited by adjusting the stop for the plunger. To do this, remove the operating handle and rotate the adjustment screw to the left (+) or right (−).

The SCHELL installation modules have been tested with a max. extension of 200 mm and a load of 400 kg for an installed WC bowl. We have not tested extending the feet on the installation module any further, so if you do this, we cannot guarantee the stability of the SCHELL WC installation module.

No, the only flush volumes possible are 3 + 6 l and 4 + 7.5 l.

Adjust the volume flow via the isolating valve or adjust the flow rate itself.

The problem is in the mains supply – parts of the piping are not properly secured.
Use the following checklist to try and fix the problem:
– Properly secure the piping sections
– Reduce the flush rate (but make sure the flush volume still meets requirements)
– Replace the cartridge with a new one

Do not unscrew the adjustment screw any further than the top edge of the screw hole.
The screw is not captive and will come out if unscrewed too far.

This is caused by air in the system, or by unsuitable pipe dimensions or pressure conditions.

The flow time here is adjusted with the adjustable nozzle bore. To do this, remove the operating handle and rotate the adjustment screw to the left (−) or right (+).

Water can usually be heard flowing through any flush valve, in principle. The noise class relates to noise levels in an adjacent room if piping has been installed correctly.

The fitting noise level (Lap) for noise class I fittings is lower than for fittings in noise class II. According to DIN 4109, noise class I fittings can be installed in any rooms directly adjacent to rooms where people should not be disturbed (such as bedrooms or other quiet rooms). Proof of compliance with a noise class is obtained with a test certificate from the building authorities.

All SCHELL fittings are tested at a flow pressure of 3.0 bar. All technical data in catalogues is based on this flow pressure. Flushing performance is reduced in proportion to flow pressure. In case of doubt, test the flush valve on a WC bowl.

Not in the vertical section of the flush pipe. Any elbow installed in the horizontal section should not exceed 45°. Otherwise, you risk a situation where the flush water becomes less forceful and fails to flush out the WC bowl properly.

Yes, the vertical section of the flush pipe can be extended all the way into a suspended ceiling if necessary. However, ensure that no potential obstructions are installed. The SCHELL EDITION E WC flush valve can then be used. The flush valve is then triggered via the 01 169 06 99 switch module.

European standards require a distance of at least 400 mm between the top edge of the WC bowl and the pipe interrupter on the flush valve.

Check to see if water is backed up in the flush pipe. Adjust the flush rate if necessary.
Ensure that no elbow is installed in the vertical part of the flush pipe.
Check to see if the flush pipe is installed too deep in the WC ceramics.

A WC flush valve needs a volume flow rate of 1.3 l/s. This volume flow rate depends on the flow pressure and the line cross-section. Check to confirm that all shut-off fittings in the piping section are fully open; also check the water meter flow volume and the flow pressure.
Check for dirt on the fitting.
Check to confirm that the supply line dimensions are appropriate for the installation.

The plunger cannot complete its full stroke at low pressures below normal operating levels.

The longer you press and hold the economy button, the less difference there is between the economy flush and a full flush. The trigger time for a flush is standardised to last exactly 1 second.
The economy button must be pushed all the way down when pressed.
The economy button only works when the brass pin on the cartridge head is inserted.

The economy button limits the plunger stroke. This reduces the flow time. The economy button must be pushed all the way down when pressed.

Standard programming methods are used here for the PURIS E, VENUS E and CELIS E, as well as electronic WC and urinal fittings. For detailed instructions, please see the operating manuals for these fittings, which can be downloaded from the Products area. For the MODUS E, this feature – with or without stagnation flush – can only be selected via the article number.
For all models with CVD touch electronics, standard programming is used and via the USB programming adapter together with the eSCHELL software.

There are several reasons for frequent battery changes. Check through the following list.

Check windows for soiling and replace as necessary if you find limescale round the edges or scratches. If fittings are in constant use, switch to mains operation.
Use high-quality, industry-standard batteries.
Check the battery compartment for moisture.
Use a larger battery compartment (01 853 00 99) with AA batteries instead of a 9 V block battery (not possible with all models).

Urinal

Any industry-standard 10 A fuse, type B10, will be OK.

The distance between the mains adapter and the electronics should not exceed 10 m.

2 W

<0.3 W

The solenoid valve closes and stays shut.

A grub screw is located in the operating button on the side facing the wall or the side facing down in the case of horizontal SC actuations.
Use an Allen key to undo this screw.

In older models, you should replace the sealing head; check to ensure the spring is correctly seated. This spring creates the contact pressure on the valve seal.
With newer models, check to see if there is a spring underneath the operating handle. If this is the case, then you should replace the cartridge.

Clean the nozzle bore, the filter and the cartridge. Use the nozzle adjustment needle to adjust the flow time. Also replace the cartridge if necessary.

Urinal flush valves are a closed system. In the event of leaks, replace the affected part.

Each type uses a different approach to adjusting settings. Please go to the Products area to download operating manuals.

With a urinal, there is no risk of waste water flowing back into the drinking water line (backflow) because the water would spill over the edge of the bowl before it could be sucked back into the flush pipe. This is not the case with a WC bowl, where the flush pipe is below the maximum possible overflow level in the WC bowl, which creates a risk of backflow.

Check the cartridge for soiling in the vicinity of the nozzle bore.

Adjust the volume flow via the isolating valve or adjust the flow rate itself.

The problem is in the mains supply – parts of the piping are not properly secured.
Use the following checklist to try and fix the problem:
– Properly secure the piping sections
– Reduce the flush rate (but make sure the flush volume still meets requirements)
– Replace the cartridge with a new one

Do not unscrew the adjustment screw any further than the top edge of the screw hole.
The screw is not captive and will come out if unscrewed too far.

The flow time here is adjusted with the adjustable nozzle bore. To do this, remove the operating handle and rotate the adjustment screw to the left (−) or right (+).

The flow time can be limited by adjusting the stop for the plunger. To do this, remove the operating handle and rotate the adjustment screw to the left (+) or right (−).

Water can usually be heard flowing through any flush valve, in principle. The noise class relates to noise levels in an adjacent room if piping has been installed correctly.

Standard programming methods are used here for the PURIS E, VENUS E and CELIS E, as well as electronic WC and urinal fittings. For detailed instructions, please see the operating manuals for these fittings, which can be downloaded from the Products area. For the MODUS E, this feature – with or without stagnation flush – can only be selected via the article number.
For all models with CVD touch electronics, standard programming is used and via the USB programming adapter together with the eSCHELL software.

There are several reasons for frequent battery changes. Check through the following list.

Check windows for soiling and replace as necessary if you find limescale round the edges or scratches. If fittings are in constant use, switch to mains operation.
Use high-quality, industry-standard batteries.
Check the battery compartment for moisture.
Use a larger battery compartment (01 853 00 99) with AA batteries instead of a 9 V block battery (not possible with all models).

Installation modules

Appliance connection fittings

Nominal pressure of 10 bar (PN 10)

Between 65 °C and 90 °C, depending on the applicable product standard.

With the POLAR II, the first movement is necessary to close the bleeder valve before the flow of water is then released.

Leaks may occur if the top bleeder valve is dirty and has therefore become jammed. Clean the valve. Check to confirm freedom of movement.

Use the enclosed hose nozzle to concentrate the water jet into a single stream.

If a pressurised hose is connected, then the stored pressure will force water out through the vent. When closing the fitting, the other end of the hose should be open.

The system has more than 100 different lock combinations (keys).

Yes, if installed with the corresponding head part.

Ensure the valve is closed firmly before locking.

If this is possible, then the snap-on bush underneath has become damaged. Please contact the SCHELL Inside Sales team to order a new snap-on bush, order no. 62 302 00 00.

Angle valves

No. To comply with DIN 3227, an angle valve must be used as a service fitting or to adjust volume flow rates upstream of sanitary fittings and appliances. If an angle valve is used in a final position, it must therefore be sealed with a cap or plug.

A standard valve requires 3 turns.

SCHELL uses a BSPP thread as a connection thread. This is a cylindrical pipe thread where pressure-tight joints are not made on the threads. The thread in the pipe connection must therefore be a matching cylindrical internal thread.

First, use the operating handle to close the filter angle valve. Keep an absorbent cloth or a container at hand. Use a coin or slotted-head screwdriver to unscrew and remove the filter. Any water in the fitting will flow out. You can now clean the filter under running water.

Only the enclosed filter screen has to be installed.
However, filter angle vales are recommended and make servicing much easier. Filter angle valves trap the dirt in the filter basket, so it cannot end up on the seal surface of the valve.

First, take the cap off the valve. The valve can then be operated using the square hole punched into the cap.

Yes, the temperature setting can be changed with a tool. To set a precise temperature, you will need to measure the water temperature at the outlet. Remember that the angle valve thermostat protects users from scalding due to excessively hot water from the wash basin tap, so it should not be set higher than 38 °C. For detailed instructions, please see the operating manual for the angle valve thermostat, which can be downloaded from the Products area.

Although the angle valve thermostat was designed to be used with only one fitting, the SCHELL angle valve thermostat does have a flow rate of 13 l/min at a flow pressure of 3 bar. Accordingly, two SCHELL wash basin taps, each with a flow rate of 6 l/min, can be connected.

Nominal pressure of 10 bar.

Heating fittings

Please go to Service > Downloads > Installation instructions

Please contact our Inside Sales team if you can’t find the item you want in our catalogue or price list. Our team will be happy to help you out.

No.

General: materials, care and cleaning instructions

A SCHELL fitting can also be operated with grey water if the grey water is of drinking water quality.

SCHELL fittings have been designed for use with drinking water. However, desalinated water is unsuitable for human consumption. SCHELL fittings are therefore not suitable for use with desalinated water.

Please see the corresponding cleaning instructions provided in the installation and service manuals. As a basic rule, avoid using any abrasive or acidic cleaning agents.

General: shipping and freight

Germany