Dosing Device Foamdos V6
Index: 01
Date modified: 26/08/2019
OI No.: BA DW 025-00 Foamdos V6 EN.DOCX
Page 9 of 37
3.2.1
Dosing Unit
A peristaltic pump is used for dosing the foam concentrate. Peristaltic
pumps are able to transport even the smallest dosing quantities
reliably and evenly, even when air or gas bubbles are trapped in the
suction line. Rotating rollers press the dosing hose against the casing
wall, which pushes the liquid in the hose out in front of the rollers
while simultaneously feeding behind them. It is exceptionally reliable
and also very easy to operate.
The installation of a dosing valve with a non-return safety device
reliably prevents water from being pushed back or the dosing line
from running empty. The opening pressure is 0.5 barg.
ATTENTION!
Regularly check the hose of the peristaltic pump for damage according to the
maintenance protocol, or each time you refill the foam concentrate.
3.2.2
Control unit
The control unit consists of a housing with openings on the side for cooling the built-in compressor. The
electronic components are installed in the housing. The operating parameters are set at the control unit.
3.2.3
Compressor
The compressor is installed in the control housing. It pumps air in the foam line via a dosing valve. Together
with the foam concentrate and water, the massage foam is created in the foam generator.
3.2.4
System separator
The built-in system separator in accordance with DIN EN 1717 ensures that no water mixed with soap can
be sucked into the piping system in the event of a pressure drop.
3.2.5
Button plate
Button plate with flush-mounted box for starting or stopping the programme.
For details about the flush-mounted box, see supplementary sheet “
BB DW
001-03 Installation flush-mounted box V2
”
Figure 2, Peristaltic pump function
Figure 3, Dosing valve
Figure 4, Button plate
