WAGNER HC 950 230V Operating Manual - page 31
HC950•HC970
29
GB
General view of application
Description of unit
2.
General view of application
2.1 Application
Priming and final coating of large areas, sealing, impregnation,
construction sanitation, façade protection and renovation, rust
protection and building protection, roof coating, roof sealing,
concrete sanitation, as well as heavy corrosion protection.
Examples of objects to be sprayed
Large-scale construction sites, underground construction, cooling
towers, bridges, sewage treatment plants and terraces.
2.2
Coating materials
Processible coating materials
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Pay attention to the Airless quality of the coating
materials to be processed.
Latexpaint,dispersionpaints,fireprotectionandthickfilmmaterials,
zinc dust and micaceous iron ore paints, Airless spray primer,
sprayable glue, anti-corrosive agents, thick coating materials and
bitumen-like coating materials.
NoothermaterialsshouldbeusedforsprayingwithoutWAGNER’s
approval.
HC 950-SSP
With suitable accessories, especially for working with airless spray
primer(Objectsize:200-800m2).
HC 970-SSP
Especiallysuitedtoworkingwithairlesssprayprimer(Objectsize:
morethan800m2).
Filtering
In spite of the high-pressure filter, filtering of the coating material is
toberecommendedingeneral(exceptwhenprocessingairlessjoint
filler).
Stir coating material before commencement of work.
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Make sure when stirring with motor-driven agitators
that no air bubbles are stirred in. Air bubbles disturb
when spraying and can, in fact, lead to interruption
of operation.
Viscosity
It is possible to work with high-viscosity coating materials with the
devices.
If highly viscous coating materials cannot be sucked up, they must be
dilutedinaccordancewiththemanufacturer’sinstruction.
Two-component coating material
Theappropriateprocessingtimemustbeadheredtoexactly.Within
this time rinse through and clean the unit meticulously with the
appropriate cleaning agents.
Coating materials with sharp-edged additional materials
Thesehaveastrongwearandteareffectonvalves,high-pressure
hose,spraygunandtip.Thedurabilityofthesepartscanbereduced
appreciably through this.
3.
Description of unit
3.1
Airless process
Themainareaofapplicationarethicklayersofhighlyviscouscoating
material for large areas and a high consumption of material.
A piston pump takes in the coating material by suction and conveys it
tothetip.Pressedthroughthetipatapressureofuptoamaximum
of250bar(25MPa),thecoatingmaterialisatomised.Thishigh
pressure has the effect of micro fine atomisation of the coating
material.
As no air is used in this process, it is described as an AIRLESS process.
Thismethodofsprayinghastheadvantagesoffinestatomisation,
cloudless operation and a smooth, bubble-free surface. As well as
these, the advantages of the speed of work and convenience must be
mentioned.
3.2
Functioning of the unit
Thefollowingsectioncontainsabriefdescriptionofthetechnical
construction for better understanding of the function.
WAGNERHC950•970arehigh-pressuresprayingunitsdrivenby
either a gasoline engine or electric motor.
Thegasolineengineorelectricmotor(fig.2,item1)drivesthe
hydraulic pump (3) by means of a V-belt which is under the belt cover
(2). Hydraulic oil flows to the hydraulic motor (4) and then moves the
piston up and down in the material feed pump (5).
WithdevicesHC950-SSPandHC970-SSP,thepistoninthematerial
feedpumpmovesashovelvalve(6).Theshovelvalvefeedshigh-
viscosity coating materials.
Theinletvalveisopenedautomaticallybytheupwardsmovement
ofthepiston.Theoutletvalveisopenedwhenthepistonmoves
downward.
Thecoatingmaterialflowsunderhighpressurethroughthehigh-
pressurehosetothespraygun.Whenthecoatingmaterialexitsfrom
the tip it atomises.
Thepressurecontrolvalve(7)controlsthevolumeandtheoperating
pressure of the coating material.
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2
6
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3
5
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