Cleaning and maintenance

INSTRUCTIONS FOR MAINTENANCE AND CLEANING OF POSTBOXES AND ACID-RESISTANT CABINETSStainless steel according to its nature, is a stainless material that does not require additional surface protection for maintaining its appearance and ensuring lasting. However, some routine maintenance and cleaning should be performed to keep the steel surfaces in good condition so as not to risk their impeccable appearance and corrosion resistance.The easiest way to keep acid-resistant steel clean is to wipe it with a soft cloth or sponge soaked with warm water and soap or a mild detergent.Then wipe with a cloth with demineralized water or when using tap water, wipe the washed items thoroughly. Cleaning should remove dirt and deposits, which left on the surface of stainless steel for too long can initiate corrosion and rust on the surface.In a heavily polluted environment, cleaning should be done more frequently. The frequency should be determined based on earlier cleanings, usually once every 3 – 4 months. Avoid rough and abrasive detergents that can cause scratches. Sanded surfaces should be wiped along the edge of sanding, not across. Fingerprints on stainless steel surfaces cause more problems when products are new. After a few weeks of usage, they will not be as visible as on brand new surface. WARNING!!! DO NOT use for stainless steel cleaning: plaster removal products or diluted hydrochloric acid, bleaches, silver cleaners! – failure to comply with the above-mentioned notice will invalidate the warranty.The appearance of the surface can be improved using professional brand cosmetics 3M / AUTOSOL / DURSOL. AUTOSOL Stainless Steel-Protective-Oilcosmetic – protects the metal surface. aerosol 400 ml 3M Stainless Steel Cleaner & Polishprofessional cosmetic for cleaning and stainless steel care.Protects the surface against fingerprints and other dirt.When used regularly, it improves further cleaning.aerosol 600 ml750 ml spray 3M Citrus Base Cleanerprofessional cleaner with lemon scent for stainless steel and other metals. It removes persistent dirt, oil, grease, many adhesives, etc. most effectively 500 ml aerosol  Types of dirt of acid-resistant products and ways of removal..Type of dirt. Cleaning products: Cement and mortar – a solution containing a small amount of phosphoric acid, then water (preferably demineralised) Fingerprints – water with soap or with detergent, preservatives for acid-resistant steel not containing abrasive material Calcium sediment – a solution of 1/4 vinegar and 3/4 of water Oil and grease – alcohol-based agents (including methyl spirit and isopropyl alcohol) solvents, e.g. acetone Paints – agents for paint strips removal based on alkaline compounds or solvents Iron particles from tools or contact with structural steel – at an early stage – mechanically, in case of pitting corrosion – etching and passivation pasteATTENTION: DURING THE WARRANTY PERIOD, THIS SERVICE CAN BE PERFORMED BY ONLY AUTHORIZED PJK GROUP SERVICE! Cleaning tools: fabric, suede leather, nylon sponge WARNING!!! Do not use wire brushes made of carbon steel, cleaning wool, steel scouring pads! – failure to comply with the above will result in loss warranty validity.To protect against pollution during transport and production process, surfaces of the steel sheets can be covered with foil:
  • the film removal should be performed at a room temperature (optimally approx. 15 –
20°C) CLEANING AND MAINTENANCE OF THE POWER-COATED POSTBOXES AND INFORMATION CABINETS PRODUCED BY PJK GROUP Postboxes and information display cabinets are exposed not only to weather conditions, but also to the effects of smoke, industrial fumes and dust. The activity of these compounds may, together with rain, cause changes on the surface and lower the corrosion resistance of the powder coating. In order to preserve the appearance properties and durability of the surface coating of external postbox, regular cleaning is necessary at least twice a year, depending on environmental pollution impact. For areas with high environmental pollution, industrial areas and those near sea tanks, cleaning should be performed every 3 – 4 months. POWDER COATING CLEANING Powder coatings can be cleaned with water (preferably demineralized) or liquid, mild detergents, diluted in water. Before use, it is recommended to check in an unaffected place if the detergent does not damage the surface. Postboxes and display cabinets should be cleaned with soft fabrics, sponges or brushes with natural bristles. Any abrasive materials can cause permanent damage to the coated surface which will result in loss of the warranty validity.  For long-lasting use and maintenance of our powder-coated products, for cleaning and maintenance we recommend the following exemplary products:
  • – Ajax Cream,
  • – Flash
For any stickers, oil impurities and consistent dirt removal Citron Cleaner can be used.After use of listed cleaning detergents it is necessary to rinse the previously cleaned surface with clean water (preferably demineralised water) and wipe until it is dry. WARNING!!! For postboxes and display cabinets cleaning DO NOT use: products for mortar removal or diluted hydrochloric acid. Failure to comply with the above will result in the loss of the warranty validity. GLASS INFORMATION DISPLAY CABINET CLEANINGDirty glass surfaces must be cleaned with detergents for glass cleaning or with water. With use of: soft fabric or sponge. You can add commonly available glass cleaning detergents, e.g. Ajax. Use only detergents without scouring additives. Do not use any metal objects (e.g. razor blades or steel wool)! You must not use alkaline compounds, acids or cleaning agents with fluorine. MAINTENANCE OF LOCKS FOR POSTBOXES AND INFORMATION DISPLAY CABINETS.The producer does not recommend the maintenance of locks. Suitable components are lubricated during manufacturing process of locks and do not require any further end-user action. Unknown lubricants may cause the gathering of dust and other solid particles, which may lead to the lock damage in the long term.