Scrubber Dryers in ESD Areas
In the ESD standard DIN EN 61340 the handling of electrostatically sensitive devices is addressed. All sites in production and logistics must be equipped in such a way that electrostatic charges are reduced and their dissipation into the environment is ensured. An electrostatic discharge can already occur across an air gap. An electrical overload leads to immediate failures in ongoing operation and to pre-damage of components.
Machine floor cleaning of electrically conductive traffic areas is increasingly the focus of cost and sustainability considerations. In-house cleaners and service providers are obliged to weigh cleaning efficiency against the preservation of conductivity.
The Gmatic Scrubber Dryer
Walk-behind Gmatic scrubber dryers, which are in any case made of conductive, electropolished stainless steel DIN 1.4301 (AISI 304), fulfil, as described below, all relevant requirements of the ESD standard DIN EN 61340:
- All stainless steel parts are spark-free in the event of metallic collision, unlike ordinary steels.
- The cladding parts made of PMMA and all controls are coated with a matt white, conductive paint.
- The wheel tyres of the running wheels and castors are made of conductive polyurethane mixed with carbon fibres.
- The deflector rollers have conductive EPM tyres.
- The suction and drain hoses and their sleeves are made of conductive polyurethane.
The Gmatic Cleaning Method
Floor coatings with conductive polymers, customary in the industry for restoring lost conductivity, are unnecessary with the Gmatic cleaning method:
For daily maintenance cleaning we recommend using Gmatic ultra 303. This surfactant-free cleaning agent leaves a protective film of polyether on the cleaned traffic area, which is renewed with every cleaning run. This protective film increases the electrical conductivity, is only molecularly thin and increases the slip resistance of the floor covering.
A basic cleaning should be carried out with the surfactant-free and polymer-free cleaning agent Gmatic ultra 301 PSK. Due to the aggressiveness of the cleaning agent, however, the conductivity of the floor is reduced until the next maintenance cleaning, because the conductive polyether left behind by Gmatic ultra 303 is removed without residue.
For basic and maintenance cleaning we recommend using
- disc brushes with very fine polyester bristles on ESD-coated floors such as PU, epoxy or acrylic.
- green Glit® pads on vinyl floors.
Service & Distribution
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