Top ten precautions for elevator purchase
As a vertical means of transportation, elevators are inseparable from people’s daily lives. At the same time, elevators are also an important category of government procurement, and almost every day there are more than ten projects for public bidding. How to purchase elevators can save time and effort, value for money, and avoid disputes. It is a problem that every purchaser and agency needs to consider. In fact, to meet the above requirements, you only need to pay attention to some small details throughout the procurement process. In this issue, we will introduce ten details in accordance with the procurement process.
First, the determination of the type of elevator
At the beginning of the planning period of the building, the purpose of the building should be clarified, because the types of elevators used by hotels, office buildings, hospitals, houses or industrial and mining enterprises are often very different, and once determined, It is very troublesome to change again. After the use of the building is determined, the passenger flow analysis is made according to factors such as the building area, the floor (height), the flow of people entering and exiting, and the location of the building in which the elevator is located, in order to determine the elevator speed (the minimum speed must meet the requirements for fire landing) and the load capacity ( The load when the elevator car is fully loaded), the number of elevators required, the type of machine room (large machine room, small machine room, machine room), the type of traction machine (traditional turbine vortex and new permanent magnet synchronization).
Second, planning to start purchasing after approval
Procurement time is recommended to start purchasing after planning for approval. After determining the type, speed, load capacity, number of elevators, number of stops, total stroke height, etc., you can entrust the architectural design department to design a blueprint. For the elevator civil works (mainly the elevator shaft), the design department is usually professional. Elevator manufacturers provide the same type of standard civil engineering drawings, and draw elevator civil construction drawings in combination with different structures of building elevator ladders such as brick structure, concrete structure, brick-concrete structure or steel-bone structure. This size is considered versatile and can meet the needs of general manufacturers. However, the requirements of the hoistway design size, machine room and pit of different elevator manufacturers are still different. If the manufacturer is determined in advance, the design according to the drawings of the selected manufacturer can reduce the waste of the use space and reduce the trouble of construction in the future. If the hoistway is large, the area is wasted; if the hoistway is small, some manufacturers can’t satisfy it at all, it is necessary to increase production costs according to non-standard production.
Third, reasonable choice of manufacturers and brands
Elevator manufacturers and brands in the world’s eight major brands also have grades, there are the first legion and the second legion. There are also many domestic elevator companies. The elevator is also a penny. Unit bids of the same level can be selected according to their own budget and project positioning. It can also be selected in a large area, and finally determine which grade is based on the degree of difference. There are also dealers and agents in the elevators. They will have high prices, but they can afford to invest. Usually choose the manufacturer, so the quality is guaranteed, the service can find the root, but the payment terms are more demanding. The industry practice is to require advance payment, full payment or basic payment before shipment. The elevator factory shall have the necessary business license, elevator production license, and the supporting documents such as the construction industry enterprise’s grade qualification and installation safety approval certificate.
Fourth, the interface is easy to transfer
The interface division elevator installation is closely related to the general contractor construction unit (civil construction and installation), the fire protection unit, and the weak electricity unit. The interface between the two should be clearly defined, and the construction should be handed over.
Fifth, due to the need to choose the elevator function
Every elevator factory has an elevator function table, and procurement personnel need to understand its functions. Some functions are mandatory and cannot be dropped. Some functions are necessary for the elevator, and there will be no choice. Some features are auxiliary, not required, you can choose. Select features based on project positioning. The more functions, the higher the price, but it is not necessarily practical. In particular, the barrier-free elevator function, residential projects, there is no mandatory requirement in the completion acceptance, the usual practice is not to consider, for the stretcher elevator, the design specifications have mandatory requirements. For public construction projects, accessibility features should be considered. Elevator button arrangement, to consider convenience, aesthetics, but also consider the sensitivity of Chinese and foreigners to some numbers, 13,14 and so on with letters instead. At the time of bidding, the elevator manufacturer is required to quote the various options for reference when selecting the type.
Sixth, clear price avoidance disputes
The entire price of the elevator project should include all equipment prices, transportation costs, tariffs (into the ladder), insurance fees, installation fees, commissioning fees and manufacturers to the owner’s commitment to pre-sales, after-sales warranty and other related costs, but here need to explain, in the factory When the construction department delivers the completed and accepted elevators to the property owner, some of the later expenses should be borne by the owner, such as the elevator registration fee, the installation acceptance inspection fee, the fire (equipment) inspection fee, and the annual annual inspection fee of the elevator. The above-mentioned related costs, both supply and demand should be implemented on the contract as much as possible, and clearing the responsibilities of both parties in written form is the best way to avoid disputes. At the time of bidding, elevator manufacturers are required to report the price of wearing parts and maintenance costs. The cost of this department involves the cost of future operation, and the property company is more concerned.
Seven, overall planning delivery time
The owner can request the elevator manufacturer to specify the delivery date for the progress of the civil construction of the building. Now the general supplier’s delivery period takes 2 and a half months to 4 months, and the general building elevator equipment is best placed in the building. It is advisable to dismantle the outdoor tower cranes. If it arrives before this, it will inevitably cause storage and storage problems, and after that, there will be secondary lifting and handling costs. Usually, the elevator factory will have a free period of storage for a certain period of time. If it is not delivered at this time, the factory will charge a certain fee.
Eight, put the elevator into three major links
A good elevator, we must control the following three main links (also called three stages).
First of all, the quality of elevator equipment products, which requires elevator manufacturers to guarantee the quality of their products; since elevators are special equipment, the production quality of enterprises with production certificates usually does not have big problems, but durability and stability will definitely difference.
The second is to pay attention to the level of installation and commissioning. The quality of the installation is very important. The installation team of each elevator factory is basically their own or long-term cooperation. There are also assessments. The commissioning is usually handled by the elevator factory.
Third, after-sales service, after the elevator is sold, there is a professional maintenance team responsible for it. The elevator factory will sign a maintenance contract with the property company, which guarantees the continuity of the elevator factory work. The reasonable and timely maintenance and maintenance management ensures the quality of the elevator. Therefore, as early as the early 1990s, the country issued a red-headed document by the Ministry of Construction, clearly stipulating that the elevator products are manufactured by the manufacturer’s “one-stop” service, that is, the elevator manufacturer guarantees, installs, debugs, and maintains the elevator equipment produced by the elevator. Responsible.
Nine, the elevator acceptance is not sloppy
Elevators are special equipment, and the State Bureau of Technical Supervision has an acceptance procedure, but they are usually responsible for safety, and they are also obsessed with inspections. Therefore, the owner and the supervision unit must strictly carry out the unpacking acceptance, process monitoring, concealed acceptance, functional acceptance and so on. It must be checked and accepted according to the elevator acceptance criteria and the functions determined in the contract, and the acceptance of one elevator for one elevator.
Ten, special person control elevator security
The installation and commissioning of the elevator is completed, the internal acceptance is completed, and the conditions of use are met. According to the regulations, the elevator is not allowed to be used without the acceptance of the technical supervision bureau, but usually the outer elevator has been dismantled at this time, and other work of the general package unit is not completed, and an indoor elevator is needed. The elevator unit and the general contractor sign an agreement, the elevator unit arranges a special person to open the elevator, and the general package unit uses the elevator according to the requirements of the elevator unit and bears the expenses. After the project is fully completed, do a comprehensive inspection and maintenance. After the completion of the project, the elevator company is handed over to the maintenance unit, and the general package is handed over to the property company for management.