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A vertical lift door is a major expense in an industrial or commercial facility. A true vertical lift door travels straight up in vertical tracks, coming to rest directly above the wall opening without extending back into the ceiling, as compared to a standard sectional door that curves along horizontal tracks and takes up part of the ceiling space. This vertical lift design does require significant headroom clearance above the opening, but it frees up the ceiling area — making it well suited for buildings with limited ceiling space or where the ceiling is needed for other equipment, such as cranes, conveyors, or HVAC systems. But not all vertical lift doors are created equal. An excellent unit consists of a long lasting, uniform and environment-resistant case which ensures the security of both personnel and inventory for several decades of operation. With over 15 years of manufacturing expertise and more than 6,600 completed projects, Seppes Door has identified the key attributesof a successful vertical lift door solution. To help you select the right solution for your facility, here are four characteristics every facility manager should consider.
Precision-Engineered Track and Roller Systems
The track and roller assembly bolts together everything else and is the heart of the vertical lift door. The track features galvanized steel, sharp bends and reinforced brackets which keep alignment during production, even if used monthly. The rollers must be able to roll smoothly, without jamming, and they should be fitted with sealed ball bearings to minimize friction and the need for regular lubrication. Seppes Door ensures that its vertical lift door can handle side thrust and impact through the use of nylon rollers. A positive stop system is also built into the track to stop over-travel and ensure that the door stops at its proper height and location both up and down. In addition, the best vertical lift door designs have a counterbalance system featuring a torsion spring that is precisely balanced with the door's weight. This way the door can be raised and lowered with less effort, which cuts down on strain on the motor and increases its lifespan, as will do any moving part of the door.
Robust Panel Construction with Superior Insulation
The panels of a vertical lift door dictate its strength, thermo-resistance and impact resistance. Rigid, double skinned steel or aluminium panels are constructed using a high density poly foam insulation core which offers good rigidity and insulation. The panels shall be tongue and grooved together. Produced on automated production lines, Seppes Door's vertical lift door panels feature a consistent thickness and flatness throughout all of the panels. Externally, it is treated with a long-lasting powder-coated coating, which is resistant to fading, chalking and corrosion, and provision is made for vision panels with shatterproof reinforced glass, that provide natural light into the workspace. In extreme climates, high-quality vertical lift door panels can provide thermal transmittance levels close to the same as insulated wall panels, which greatly improves energy efficiencies over the life of the door.
Integrated Safety and Automation Features
The performance of vertical lift door systems is no longer an issue of functioning. A professional, quality vertical lift door will feature multiple layers of security. An automatic reverse system includes a safety edge along the bottom of the door that detects resistance upon contact with an object and signals for a reverse. Use of motion sensors and radar could help to unlock the doors automatically when a car approaches in order to reduce driver distraction. Moreover, a door of good quality has a manual opening method whereby personnel can open the door during a power failure, thus ensuring that it will not be a barrier to emergency egress. To go the extra mile, Seppes Door features an intelligent tracing system, saving maintenance logs and diagnostics with its intelligent ‘one door, one code' system. The motor also has thermal overload protection and a locking brake to keep the door from falling. These features are put to the test and ensure CE and ISO9001 Certification; Every Seppes vertical lift door comes with 15 million CNY of product liability insurance.
Durable Hardware and Sealed Componentry
A vertical lift door's smaller components are critical to its overall durability. The hinges, cables, pulleys and end bearings should be made from durable, corrosion resistant material (zinc plating or galvanized). Resisting rust, Seppes Door's steel fastenings and zinc-plated hardware are able to hold up in damp or corrosive conditions. A heavy-duty rubber seal between the bottom bracket and astragal provides a good cushion for the door to rest on and keeps air out. The highest tensile steel is used for cables with reduced fraying and the drum system is precision-machined to ensure smooth cable spooling. All components are specified based on total life cycle performance and not simply on up-front cost. Before leaving the factory, every unit undergoes rigorous cycle testing, simulating years of daily operation. This attention to detail ensures the door is quiet, balanced and responsive for the life of the door.
Essentially, a fine vertical lift door can be concluded from the hardware, precise track system, insulated panels and full automation with safety. The combined efforts of these features ensure secure, efficient and safe operation over thousands of cycles. To compile its reputation, Seppes Door has followed European industry standard requirements and received CE, SGS and ISO9001 certifications and is servicing more than 80 Fortune 500 clients. As part of their planning, facility managers must look for these features in any vertical lift door system that they consider in order to ensure that they are making an investment that will fulfill their needs for years to come.
