QJB7.5/4-2500 Submersible Propeller PumpSupply and Installation
(1) Jiangsu Du'an Environmental Protection produces diving equipmentThe propeller must be compatible with the existing electrical control circuit, protection circuit, and coupling device of the propeller, ensuring seamless interchangeability with the existing equipment.
(2) Jiangsu Du'an Environmental Protection Flow PromoterThe spare parts kit must be compatible with the supplied equipment, and the installation and use of the kit do not require any modifications to the equipment.
(3) Jiangsu Du'an Environmental ProtectionProvideLow-speed submersible propellerOn-site control cabinet for existing equipmentPower control box, control cables and wires, and provide cable suspension nets.
(4) Diving propeller accessoriesTechnical documents and drawings.
(5) Jiangsu Du'an Environmental ProtectionResponsible for transportation, installation, acceptance, and after-sales service of the supplied goods.
Equipment Quality Requirements
(1) Jiangsu Du'an Environmental Protection Low-Speed TurbulatorThe product should meet the functional requirements of this category, be free from flaws and defects, qualify as a standard product, and have a clear manufacturer or manufacturer.
(2) Jiangsu Du'an Environmental Low-Speed TurbulatorBrand newManufacturedAll equipment and materials must be packaged in the original factory's complete packaging upon arrival at the construction site.The wooden crates meet the standard.。
(3) Jiangsu Du'an Environmental Protection Low-Speed TurbulatorMust meet industry environmental and quality standards.
(4) Jiangsu Du'an Environmental Protection Low-Speed TurbulatorThe specifications and model parameters must match the requirements listed.
Du娄Environmental QJB Submersible Flow PropellerInspection Requirements
（1) Inspection is divided into the preliminary inspection upon delivery to the delivery location.
① Preliminary Inspection: Within 3 days after the goods arrive at the delivery location, the buyer (including the buyer's designated third-party) and the supplier's representative will jointly open the boxes and inspect the goods. The buyer will, in accordance with the contract, procurement documents, relevant national laws and regulations, and specifications, conduct a detailed count and inspection of the goods' types, brands, origin, model specifications, quantity, appearance quality, and documentation, and make detailed records.
If initial inspection reveals discrepancies in the goods, such as shortages, poor quality, or damage, a detailed record should be made. The buyer may refuse to accept the shipment, or the supplier must immediately and without condition replace or make up the goods within the time specified by the buyer. After replacement or supplementation, the buyer has the right to inspect the goods in accordance with the relevant acceptance provisions in this clause. All costs associated with manufacturing, repair, and transportation, as well as insurance, shall be borne by the supplier and are not the responsibility of the buyer.
Upon preliminary acceptance, the buyer issues the relevant preliminary acceptance report.
②Dive Propulsion VehicleUpon completion of installation and satisfactory debugging, the buyer and supplier inspect the debugging results.Blue DeepLow-speed TurbulatorDuring the installation and debugging process of the goods, detailed inspection, testing records, and test results should be maintained. The inspection results must comply with the standards stipulated in this contract, procurement documents, relevant national laws and regulations, and specifications.
（2）Low-speed submersible flow generators come with a quality guarantee period starting from the date of installation and debugging.18 months.
（3）UserPlease provide the Chinese content you would like translated into American English.Low-speed Submersible Flow PropellerThe conducted inspectionIn accordance with industry standards.
（4）Low-speed submersible propellers are installed and debugged under the guidance of Jiangsu Du'an Environmental Protection's after-sales service personnel, and relevant personnel of the using unit are trained on the operation and maintenance of the equipment.
Duwan Environmental QJB7.5/4-2500 Submersible Turbulator with On-site Control CabinetPrimary Technical Requirements
1Case structure
The cabinet is equipped with only an emergency stop button. The cabinet features bottom entry./Out of line and equipped with corresponding sealing accessories. All busbars inside the box are made of materials that complyIECCopper content as per national standards99.7%All copper busbars are covered with thermoplastic insulated tubes. Wiring uses insulated copper conductors.
2Key Components
Breakers, contactors, and thermal overload relays - select products; intermediate relays - use Omron or equivalent quality products.
All signal light sources areLEDEmergency stop button should be keyed locked, the key must be universal.
The box should be equipped with an intelligent dehumidifier (including the dehumidifier, drain pipe, and auxiliary materials and accessories).
Using ambient temperature condensation dehumidification method, power supplyAC220VEnsure reliable operation of the equipment.
The secondary circuit of the current transformer should use the test terminals.
The wiring terminals inside the box are made of Phoenix terminals, the quantity should meet the on-site requirements, and additional...20%Spare terminal blocks30%Backup terminal rail with clearly numbered terminals (numbers won't fade within ten years).
（3Control Method
Control box mounted“Hand—Halt—Automatic”Control the switch. Manual control is only available for electrical.
For system and equipment tuning during operation. During normal operation, the transfer switch is set to the automatic position and isPLCProgram control.
Shipped/ReceivedPLCThe basic form of the signal is: manual/Automatic conversion signals, operational status signals, fault signals;PLCSent Power-On/Shutdown commands, etc.
