Operation
14
JUDO JUKO-LF
1701430 • 2018/11
4.4.1 Checking the backflow pre-
venter
(only JUKO-LF 1½” - 2")
WARNING
A defective backflow preventer
must be replaced immediately.
The backflow preventer may only
be replaced by trained technical
personnel.
The testing screw at the inlet connection of
the built-in rotary flange is used to check
the function of the backflow preventer.
1.
Close the stopcock or shut-off valve
upstream of the device.
2.
Unscrew the testing screw (see chap-
ter 2.2).
After a few seconds, no water
may escape from the bore hole.
3.
Screw the testing screw back in.
4.
Open the stopcock or shut-off valve
upstream of the domestic water station
again.
4.5
Temporary removal of the
device
WARNING
If the device is removed due to an
interruption of operation:
•
Protect the flange surfaces
against damage to ensure proper
sealing.
•
Protect the device from dirt so
as not to impair drinking water
hygiene.
•
Store the device in a frost-free
place to prevent damage caused
by freezing water and leakage.
When recommissioning the device, proceed
as with a new installation.
5
Servicing
5.1
Cleaning
CAUTION
Do not use household cleaning
agents to clean the outside of the
device, but only use clear water to
avoid embrittlement of the plastic.
5.2
Warranty and maintenance
Prerequisite for obtaining the statutory war-
ranty claim is regular backwashing (see
chapter 4.2). The DIN EN 13443-1 pre-
scribes that the backwashing must take
place every six months. JUDO however
recommends to comply with the information
in chapter 4.2.1 Backwashing interval.
To ensure the process operates success-
fully as long as possible, regular inspec-
tion and routine servicing of the device are
essential. Where home automation is con-
cerned, this is governed by DIN EN 806-5.
We recommend the conclusion of a main-
tenance contract, which is the best way
to ensure a good operating function, even
beyond the warranty period. The skilled
tradesmen or the factory customer service
are suitable partners for regular mainte-
nance work and the supply of consumables
and wear materials as well as for possible
repairs.
