Impermissible Operating Methods; Procedure Following An Extended Stoppage Of Operation; Description Of Process; Requirements For Installation - BWT THERO 90PRO Instrucciones De Montaje Y Manejo

• The device must be disconnected prior to
performing any maintenance work on the
drinking water supply. Rinse the water pipe
sufficiently before reconnecting the device.
• Before installation, disconnect the device and
any terminal devices from the power (pull the
mains plug).
Observe: Improper installation of the
RO device may cause damage to it.
• Observe any country-specific installa-
tion regulations (such as DIN 1988, EN 1717),
general hygienic conditions and technical
data for protecting the drinking water.
• Unauthorised modifications to the RO device
and technical alterations are not permitted.
• Avoid mechanical damage to the device.
Other wise the warranty is void.
• Install a stop valve upstream of the RO
device.
• Connect the device only using flexible hoses
that conform to DVGW W 543.
• The device may not be installed in the vicinity
of heat sources or open flames.
• The RO device may not come into contact
with chemicals, solvents, or vapours.
• The installation site must be free of frost and
protected from direct sunlight.
• The device may not be operated with feed-
water that is microbially contaminated,
whose origin or quality is unknown, or similar.
• When the RO device is used for food appli-
cations, all permeate consumers must be
cleaned and rinsed thoroughly before use.
• Avoid leaving the device in storage for a
long time in order to reduce the risk of idle
contamination.

1.5.3 Impermissible operating methods

Attention: Danger through improper
use!
Claims for damages resulting from
improper use are void.
Danger: Always disconnect the voltage
supply of the unit by removing the
plug or fuse if hard wired during any
maintenance and electrical work.
1.5.4 Procedure following an extended
stoppage of operation
The following measures are to be taken to pro-
tect the RO device from microbial contamina-
tion and after extended stoppages of opera-
tion:
• We recommend rinsing the device for five
minutes after extended stoppages of opera-
tion, such as at weekends or holidays.
• Please observe the provisions in the operat-
ing manual of the external pre-filter used.

1.6 Description of process

The semi-permeable reverse osmosis mem-
brane separates the feedwater, which is sup-
plied under high pressure (approx. 8 bar), into
desalinated purified water (permeate) and the
salty waste water (concentrate).
The percentage ratio between the permeate
produced and the amount of raw water used
is called the WCF yield (%). The RO device is
factory-configured for a WCF of about 50%.
Device on and off switching points:
• Automatic RO operation via pressure switch:
0.5 and 2.0 bar.
• Note that pressure fluctuations may lead to
the device switching off.
• Once the connected consumer starts draw-
ing purified water, the actual pressure drops
below the set "RO starting pressure" and the
RO unit starts producing.

1.7 Requirements for installation

1.7.1 Installation site of the RO unit/require-
ments
Choose a place to set up the device that
allows simple connection to the water supply
network.
There must also be a drain connection and a
separate mains socket (100-230 V, 50 Hz) near
by. The device must be electrically connected
to a grounded mains socket.
The voltage supply and the requisite feed water
pressure must be guaranteed stable.
National guidelines and regulations:
Please observe the general standards, guide-
lines and technical data.
EN
18