Volkswagen Golf Service & Repair Manual: Aqua-Premium - application instructions for water-based products
| When using water-based products always devote scrupulous
care to the substrate preparations before pretreating with the
materials specifically recommended for use with water-based
products. |
| |
Clean metallic substrates preferably with nitrocellulose
thinner -LVE 856 000 A3-. |
| |
Use silicone remover -LSW 019 000 A5- to clean sanded
surfacer surfaces and old paint. |
| |
Pretreat plastic surfaces thoroughly according to
→ Chapter „Paintwork system for plastic components“,
and then clean it again using silicone remover -LSW 019 000 A5-
before proceeding with subsequent work. |
| Use only commercially available, waterproof masking tape and
water-resistant glued masking paper or plastic cover sheets. |
| Spray guns/Spraying systems |
| Compliant spray guns are suitable spray guns. |
 Note
| Alternating application of water-based and conventional
products using a spray gun/spraying system is not recommended.
The components that come in contact with the application medium
in spray guns/spray systems employed in the application of
water-based products must be made of corrosion-resistant
materials (stainless steel, plastic). |
| Mixing /Adjusting vessels |
| Only containers in plastic or in tin with an inside coating
are approved for mixing and adjusting viscosity on water-based
products. |
| Since the viscosity and the application behaviour of
water-based products depends on the material temperature, you
must ensure that the water-based products have a temperature of
between +18°C and +35°C at the time of adjusting the viscosity or
the time of application. |
| The handling of water-based products is in essence
influenced by temperature and humidity. This influence can limit
or even prevent application, if certain preconditions are not
present or met. In the application window for water-based
products, the key points are identified. |
| To ensure optimum application at different climatic
conditions and object sizes, the following table provides a
recommendation for the use of additive for Aqua Premium -LVM 035
200 A3- or additive for Aqua Premium -LVM 035 301 A3-. |
| Table for different climates |
|
|
|
| Climate in spray booth |
Temperature range |
Humidity range |
LVM 035
200 |
LVM 035 301 |
| |
|
|
Partial coatings |
Complete coatings |
Partial coatings |
Complete coatings |
| Cold and dry climate |
20 °C |
15-30 % |
Suitable to a limited
extent |
Not suitable |
Suitable |
Suitable |
| Average
climate |
20-30 °C |
< 30 % |
Suitable |
Not suitable |
Suitable |
Suitable + 10%
demineralised water -LVW 010 000- |
| 30-60 % |
Suitable |
Suitable |
Suitable to a limited
extent |
Suitable |
| > 60 % |
Suitable |
Suitable |
Suitable to a limited
extent |
Suitable to a limited
extent |
| Hot climate |
30- >35°C |
30-60 % |
Suitable |
Suitable to a limited
extent |
Suitable to a limited
extent |
Suitable |
| Hot and humid climate
|
30- >35°C |
> 60 % |
Suitable |
Suitable |
Not suitable |
Suitable to a limited
extent |
| Hot and dry
climate |
30- >35°C |
15-30 % |
Suitable to a limited
extent |
Not suitable |
Suitable |
Suitable + 10%
demineralised water -LVW 010 000- |
| 30- >35°C |
< 15 % |
Not suitable |
Not suitable |
Suitable to a limited extent |
Suitable to a limited extent
+ 10% demineralised water -LVW 010 000- |
| The temperature and humidity ranges listed in the table are
approximate values and always depend on the local conditions.
I.e., the air flow in the booth, the spray guns (type and/or
nozzle size) and the application itself have a strong influence
on the film formation and the quality of the coat. |
| Assuming that in a modernly equipped painting business, a
handling temperature of at least +20 °C is guaranteed, special
measures regarding humidity are only necessary when the humidity
is outside of the handling range. |
| Measures to be taken when relative humidity is too high |
| If the relative humidity is too high, deviations in shade,
clouding in metallic colours and an absence of holding power on
vertical surfaces can occur. Raising the temperature in the
spray booth can remedy this, provided the user finds this
acceptable. Use only additive for Aqua Premium -LVM 035 200-. |
| Measures to be taken when relative humidity is too low |
| If the humidity is too low, it can result in increased
levels of spray mist and decreased spray mist absorption.
Lowering the handling temperature (if possible), can remedy
this; however, the temperature must remain above +18 °C. Use only
additive for Aqua Premium -LVM 035 301-. |
| Airing times and reworking times |
| In the case of water-based products, the airing times
between spray passes and end airing or reworking times are
negatively influenced by low temperatures and high humidity. The
drying process between the individual spray passes or before
further reworking can be accelerated by: |
| |
Accelerated discharge of humid air through blowing with
variable and stationary air acceleration systems with and
without drying (hand-held units, floor-mounted appliances,
ceiling systems etc.) |
|
|
|
| Personal protective equipment: |
-
| |
Adhere to the safety data sheet. |
-
| |
Wear personal protective equipment during application. |
|
|
|
Issued 04.2013
The gloss level of HS clear coats and HS top coats is set by
mixing them with matting additive -LVM 769 810 A2- for plastic
and ...
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Setting the gloss level of HS clear coats and HS top coats