Viega 8570.51 User manual

Only in connection with Prevista Dry WC element 8521.32,
for ceramic ≤ 28 kg
Model Year built:
8570.51 from 03/2019
en_INT
Gas pressure spring ≤ 28 kg
Instructions for Use

Gas pressure spring ≤ 28 kg 2 from 10

Table of contents
1About these instructions for use 4
1.1 Target groups 4
1.2 Labelling of notes 4
1.3 About this translated version 5
2Product information 6
2.1 Intended use 6
2.1.1 Areas of use 6
3Handling 7
3.1 Assembly 7
3.1.1 Replace gas pressure spring 7
3.1.2 Preparing gas pressure spring for disposal 8
3.2 Disposal 10
Table of contents
Gas pressure spring ≤ 28 kg 3 from 10

1 About these instructions for use
Trade mark rights exist for this document; for further information, go to
viega.com/legal.
1.1 Target groups
The information in this instruction manual is directed at the following
groups of people:
nHeating and sanitary professionals and trained personnel
Individuals without the abovementioned training or qualification are not
permitted to mount, install and, if required, maintain this product. This
restriction does not extend to possible operating instructions.
The installation of Viega products must take place in accordance with
the general rules of engineering and the Viega instructions for use.
1.2 Labelling of notes
Warning and advisory texts are set aside from the remainder of the text
and are labelled with the relevant pictographs.
DANGER!
This symbol warns of possible life-threatening injury.
WARNING!
This symbol warns of possible serious injury.
CAUTION!
This symbol warns of possible injury.
NOTICE!
This symbol warns of possible damage to property.
This symbol gives additional information and hints.
About these instructions for use
Gas pressure spring ≤ 28 kg 4 from 10

1.3 About this translated version
This instruction for use contains important information about the choice
of product or system, assembly and commissioning as well as intended
use and, if required, maintenance measures. The information about the
products, their properties and application technology are based on the
current standards in Europe (e.g. EN) and/or in Germany
(e.g. DIN/DVGW).
Some passages in the text may refer to technical codes in Europe/
Germany. These should serve as recommendations in the absence of
corresponding national regulations. The relevant national laws, stand‐
ards, regulations, directives and other technical provisions take priority
over the German/European directives specified in this manual: The
information herein is not binding for other countries and regions; as said
above, they should be understood as a recommendation.
About these instructions for use
Gas pressure spring ≤ 28 kg 5 from 10

2 Product information
2.1 Intended use
2.1.1 Areas of use
The gas pressure spring is exclusively suitable for the height-adjustable
Prevista Dry WC element (model 8521.32). The gas pressure spring is
used to lift and lower WC ceramic up to 28 kg.
Product information
Gas pressure spring ≤ 28 kg 6 from 10

3 Handling
3.1 Assembly
3.1.1 Replace gas pressure spring
The model replaces the built-in gas pressure spring in the case of a
defect.
NOTICE!
Damage to the cover plate!
If the upper edge of the finished floor is higher than
planned, there is a risk that the cover plate will touch. To
avoid touching, limit the lowering of the WC (possible up to
a max. of 20 mm):
– Place a maximum of five 4 mm spacer washers under
the piston rod of the gas pressure spring.
Requirements:
nThe WC ceramic is at the lowest position.
nFollowing components are removed:
– WC ceramic
– Cover plate
– Actuating button / Hydraulic actuation
– cover frame
Remove the gas pressure spring by unscrewing the top and bottom
5 mm Allen screw.
Handling
Gas pressure spring ≤ 28 kg 7 from 10

Insert the new gas pressure spring.
NOTICE! If necessary, place a maximum of five 4 mm spacer
washers under the piston rod of the gas pressure spring.
Place the relevant number of spacer washers below the piston rod
of the gas pressure spring.
Fasten the new gas pressure spring with the Allen screws.
Re-mount following components:
ncover frame
nActuating button / Hydraulic actuation
nCover plate
nWC ceramic
3.1.2 Preparing gas pressure spring for disposal
WARNING!
High pressure
The gas is the gas pressure is highly pressurised. During
drilling, there is a risk of injury due to flying metal fragments
and oil.
– Wear eye and face protection and protective clothing.
– Ensure that there are no persons in the danger zone in
front of and behind the piston rod.
– Do not cut off the ends.
– Cover the borehole.
– Under no circumstances use a lathe.
Please contact your Viega Service Center if you have any questions.
Handling
Gas pressure spring ≤ 28 kg 8 from 10

The gas pressure spring must be disposed off unpressurised and
without oil; to this end, drill two holes in the container at two points.
Open up the gas pressure spring.
99


1 Oil
2 Gas
The drilling points X1 and X2 vary depending on the diameter of piston
rod and cylinder.
Diameter (mm) piston rod / cylinder X1 (mm) X2 (mm)
8/19; 8/22; 10/22 30 20
8/28; 10/28; 14/28 35 40
10/40; 14/40 55 40
WARNING! The gas is the gas pressure spring is highly pressur‐
ised. During drilling, there is a risk of injury due to flying metal
fragments and oil.
Using a 23 mm drill, drill slowly at point X2 until gas escapes.
Using a 23 mm drill, drill slowly at point X1 until pressure drops and
oil becomes accessible.
Pour out the oil into a suitable container.
ðNow, the piston rod can be easily moved by hand. If not,
repeat the procedure.
Saw through the metal cylinder, if necessary.
Dispose of the individual components.
Draining gas and oil
Handling
Gas pressure spring ≤ 28 kg 9 from 10

3.2 Disposal
Separate the product and packaging materials (e. g. paper, metal,
plastic or non-ferrous metals) and dispose of in accordance with valid
national legal requirements.
Handling
Gas pressure spring ≤ 28 kg 10 from 10