Cleaning And Maintenance; Problems And Solutions - Sapho KU322 Benutzerhandbuch

User´s Manual
GB
1. Application
Thermostatic mixing valves are designed to provide a convenient operation, and save water
and heating energy. It offers a high precision of regulating the requested temperature. The
pressure of all mixer sis set to 3 bar at both inputs in the factory. Under these conditions, the
mixer performance is ideal with any type of water heating.
2. Technical Data
Minimum pressure of 0,5 bar without subsequent resistence
Minimum pressure of 1 bar with subsequent pressure
Maximum operating pressure of 6 bar (1)
Recommended pressure of 3 bar (1)
Maximum water temperature on the hot water inlet 80°C
Recommended water temperature on the hot water inlet 60 -70°C
The water temperature on the inlet must be minimum 2°C higher than the temperature of
the mixed water
Temperature range of the mixed water 15-50°C
Maximum flow rate at a pressure of 3 Bar – 6-12 l / min (2)
Safety stop button 38°C (3)
Operating temperature 0°C – 50°C (4)
At a pressure higher than 5 bar, we recommend to install a pressure reducing valve to the inlet conduit (1)
The flow rate is adjustable and will vary depending on the inlet temperature and pressure.(2)
The SafeStop button 38°C is set at a hot inlet temperature of 65°C and a cold inlet temperature of
12°C at a pressure of 3bar. (3)
Freezing of water in the mixer causes its damage! (4)
3. New Installation
Warning!
Before connecting the mixer, the inlet conduit must be flushed properly and get free of
impurities (especially for new water distributions). The hot water inlet must be on the left
side and the cold water inlet on the right side of the front view of the installed mixer. If not,
the mixer will not work! Use a spirit level and an exccentric connection to install the mixer
body in a horizontal position parallel to the wall. Check the seam tightness for leaks after
the installation. During the period of use the thermostatic head almost never turns (38°C
is usually a convenient temperature). For a smooth work it is recommended to turn it a few
times (from cold to hot water) at least once a month.
4. Installation
Continue with the installation according to the following diagrams.
The installation must be performed by a qualified person.
5. Temperature Setting
The SafeStop button 38°C is set at a hot water inlet temperature of 65°C and a cold water
inlet temperature of 12°C at a pressure of 3 bar. Since the temperature of the SafeStop can
vary depending on the inlet temperature and pressure changes, it´s possible to change its
position during the use. If the SafetyStop is not set at 38°C, follow these instructions:
Turn on the water and measure it´s temperature using a thermometer. Press the safety han-
dle and rotate the temperature controller in the position with 38°C temperature. Without
further rotation of the handle, remove the cover and the screws and pull out the loosened
handle. Re-attach the handle to the mixer, so that the mark shows 38°C.
6. Temperature Limitation
The safety stop button reduces the temperature range to maximum 38°C, after pressing
the button on the mixer handle the limit can be cancelled and you can gain a higher
temperature.
7. Operation
The requested temperature can be set with the thermostat handle on the left side of the
mixer, as shown in the picture below. If you need a temperature higher than 38°C, push the
safety stop and continue turning the handle. Beware of possible burning with hot water!
Using the handle in the right side you can control the water flow while maintaining a con-
stant temperature at the outlet. For a maximum flow the valve can be fully opened.
7.1. Thermostatic Cartridge
To ensure a long-term functionality of this product, we recommend a regular (1x per year)
maintenance of the thermostatic cartridge. Close the main water supply. Loosen the fixing
screws in the bottom of the mixer -as shown in the picture - to unloose the cartridge. You
can leave the handle on the cartridge. Pull out the cartridge (it´s not screwed into the mixer
body) and remove dirt from it, using a vinegar or limescale cleaners. Then slide cartridge
back into the mixer body and fix it with a screw.

8. Cleaning and Maintenance

To clean the mixer surface, use available cleaners against limescale or just a soap water.
Avoid agents containing acid, abrasive agents and steel wools. Plastic and rubber parts can
be cleaned the same way.
* The perlator strainers and shower head holes must be cleaned regularly to prevent
clogging.
* In areas with hard water, more frequent cleaning is required.

9. Problems and Solutions

Water temperature control does not work
If the water of a required temperature is not coming out, turn the handle several times
to control the temperature from hot to cold. Check if the mixers work properly in the
same place at the same time. Check if the filters on the inlet are not clogged. Remove the
thermostatic cartridge and clean it as described in paragraph no.7. If the defect cannot be
removed, replace the cartridge with a new one.
If there´s no water at a temperature of 38°C coming out in the safety stop position
Follow the instructions in paragraph no.5 – Temperature settings
If turning the thermostatic cartridge is stiff or difficult
The problem that often arises after a longer disuse of the mixer. Turn on the water and turn
the temperature handle until it runs smoother. Remove the thermostatic cartridge and
clean it as described in paragraph 7.1.
10. Warranty
The supplier of the water mixers grants a 6-year warranty for the seam tightness and
a 24month warranty for the surface finishing and functionality of the thermostatic cart-
ridge, hand showers, shower hoses and other parts since the date of sale confirmed on the
warranty certificate, if:
• a warranty certificate and a proof of sale is documented
• Installation and the way of use were in accordance with the instructions, which are an
integral part of each product.
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