Intended Use Of The Product; Product Description; Particular Advantages; Drying Times - Hedson IRT COMBI 4-1 IR/UVA Manual De Operación

1. Intended use of the product

This product serves exclusively to accelerate the drying/curing of
putty, filler, base and clear coats. This applies to both water-borne
and solvent-based products. It´s site of use is the preparation area
and finishing area. Within the automotive industry and vehicle repair
sectors, it is used to cure small areas before polishing. The product
must not be used for other purposes than the described drying
processes.
This product should only be used with the filter glass intact.
A missing or broken filter glass will result in hazardous UVC and UVB
radiation. For a worker working close to the operating lamp (1,5m) the
daily limitation should be set to 1h/working day.
Only original spare parts shall be used to maintain this products high
safety.
The maximum ambient temperature during operation should not
exceed 40°C. The IRT COMBI 4-1 & 4-2 IR/UVA dryers must not
be used in spray booths or within a distance of 5m from spraying
activities in order to avoid explosion risk. This prohibition is also valid
for the IRT COMBI 4-10 & 4-20 IR/UVA, if not combined with the IRT
Dust Cover and Surveillance System.

2. Product description

The dryer is an essential aid for paint repair on small and medium
sized areas.
The easily manoeuvrable IRT COMBI IR/UVA is equipped with one or
two compact cassettes. Each cassette is equipped with four infrared
(IR) lamps with gold plated free-form reflectors, one UV-lamp and a
ventilator. The design, combined with a gas spring, makes positioning
of the cassette simple. The IR and UV lamps are easily exchangeable
and the reflectors are protected against mechanical damage by a
mesh.
The dryer has a selection of sophisticated programs. The time for the
IR can be set to 0-30 min and 0-15 min for the UV.

2.1 Particular advantages

2.1.1 Higher quality
Using the dryer when you cure putty also improves the quality of the
top coat.
IR curing
The short wave IR curing enables the coating to be cured from the
inside outwards. This prevents solvents to be trapped inside the
coating and ensures a fast and high quality curing.
UV curing
The ultraviolet light spectrum generated by a UV lamp interacts with
special coating chemistries to produce a high-quality, durable curing.
In many applications, UV curing can achieve the curing faster, and
therefore at a lower total cost than many other coating processes.
UV-coat contains less solvent than conventional paint and from that
perspective has less negative environmental impact.
Most importantly to achieve a good and fast curing result there
must be enough UV-A intensity. IRT COMBI IR/UVA dryers have an
outstanding intensity to achieve the best curing result.
Unique benefits of the UV cure coating:
• Reduced amount of solvent
• Fast curing time
• Low-temperature processing
• Scratch resistant and chemical resistant
714812 rev 4
2.1.2

Drying times

At 60 cm distance
Material ................................Minutes
Putty
Filler Bright
Filler Dark
Waterbase
Base coat
Top coat
Clear coat
Plast Filler
Plast Topcoat
PlastiClearcoat
Final boost
Soft cure
UV Putty
UV Filler
UV Clearcoat
2.1.3 Regulated temperature for IR curing
The dryer has a pyrometer which carefully controls
temperature of the object. The computer does not only measure
the maximum allowed temperature but also the temperature raise.
It ensures that the programmed drying/curing temperature is
maintained, thereby achieving optimum curing, without risk for "over
burning".
2.1.4 Hi-tech shape of reflectors with shortwave IR
By using short-wave technology and gold-coated reflectors with
a high tech shape important advantages are achieved. Firstly, by
radiating only the needed areas and not heating any air, a lower
energy consumption is achieved. Secondly, a more uniform surface
temperature is obtained by distributing the energy evenly. Thirdly, a
larger drying surface is achieved. Fourthly, less radiation outside the
curing area.

2.2 Technical data

The emitted IR-radiation is short wave with its intensity peak at 1120
nm. The emitted UV-radiation is UVA 315-400nm.
IR drying surface at 60 cm, IRT COMBI 4-1 & 4-10 IR/
UVA
The figures below show the maximum drying area, when the
respective dryer is used at 60 cm distance from black sheet metal.
1,1 m
UV drying surface at 50 cm, IRT COMBI 4-1 & 4-10
IR/UVA
1,0 m
GB
5- 6
10- 15
10- 15
4- 6
4- 8
10-15
10-15
10-15
13-17
13-17
2-4
13-17
4-6
3-6
6-8
3