Jiangsu Du'an AS55-4CB Submersible Sludge Pump with Guide Rod Chain

Motor Power: 5.5 kW

150mm outlet diameter

Cast Iron

10-meter underwater sealed cable with YCW type

Duwan AS55-4CB Sewage Pump Factory Inspection

1General Principles

Submersible pumps should undergo inspections during the manufacturing process, after manufacturing, and prior to shipment, including material and casting inspections, component and manufacturing process checks, as well as paintwork examination.

Chemical analysis of the test bars obtained during the casting of pump shells and impellers, to verify that their composition complies with the approved materials for the pump structure.

Blue Deep provides test certificates for all pump shaft mechanical seals and wear-resistant lining materials.

Each Nanjing Lanshen Submersible Sewage Pump should undergo the following tests:

Hydrostatic Test

· Pump Performance Test

· Pump Clean Water Cavitation Test

Pump noise and vibration test

Solid Throughput Capability Test for Pumps

2Static Water Pressure Test

Each pump should withstand operation under normal conditions and at rated speed, with the pump body operating at a higher working pressure.1.75Subjected to twice the pressure for hydrostatic testing. The test pressure should be maintained at least30Minutes, during which time there should be no leaks at all in any connections or seals.

During pressure testing within the pump casing, if any defects are detected, they should be addressed.XRadiographic inspection to determine the extent of defects; the permissible extent of defects should beASTM E44The severity specified2To confirm.

3Performance Testing

Prior to applying paint inside the pump, unless otherwise specified in this technical description, it should be done in accordance with international standards.ISO-2548Perform all performance tests with clear water.

Flow measurement devices should comply with international standards.ISO2548Regulations.

4Noise and Vibration Test

During the clean water performance test of the pump, noise and vibration tests should be conducted on each pump set to verify compliance with the requirements specified in the technical regulations; noise measurements should be conducted in accordance with...ISOOrGBRegulations concerning the requirements: During operation of the pump under any working condition, acoustic power shall be used as the standard. If conditions are not met, the acoustic pressure method may be adopted, but the noise level must not exceed the specified value. Vibration measurements should be conducted in accordance with...ISOOrGBRequirements for the vibration evaluation within the pump's operating rangeBGrade

5Solid Throughput Capacity Test

Submersible sludge pumps should undergo a test for solids handling capability, with the testing setup allowing various solids to be introduced into the pump's suction intake.

Two types of solid matter should be introduced into the test system.

Three hardwood balls, one at a time, as per the terms.

Three batches of shredded fabric strips, a mixture of plastic and other fibers, each batch with a volume of0.25Cubic meters.

Should be after the hardwood ball is inserted15Within minutes, vibration monitoring is conducted, followed by the introduction of rags, plastics, and other fiber compounds, for two...15Minute vibration monitoring.

6Pump Rejection

If the pump fails to pass the following tests, it will be rejected:

·Failed static water pressure test

· Failed cavitation test

·Failed noise and vibration test

· Failed the solids throughput capability test

· Failed to meet international standardsISO2548The tolerance limits for power consumption, efficiency, head, and flow rate as specified in the terms.

6 Installation Requirements

Submersible pumps and installation sequence, as well as technical requirements, should be in accordance with the manufacturer's installation manual.

Prior to installation, protective stickers applied by Duwan's environmental packaging staff to prevent component damage must not be prematurely removed.

The installation location and elevation of the submersible pump should comply with design specifications; the plane position deviation should not exceed ±10mmHeight deviation shall not exceed ±20mm。

The submersible pump base should be adjusted to be level, with the deviation not exceeding1/1000。

The twin shafts of the centrifugal submersible pump must be installed vertically and parallel. The deviation in their verticality should be less than1/1000No longer than total length.4mmParallel deviation less than2mm。

When the cable for the submersible pump is long, the contractor should seek the manufacturer's advice before appropriately securing the cable.

The submersible pump's outlet flange must be aligned and flush with the pipeline's connecting flange for a tight fit.

7 Inspection and tuning

Operate under load (adjustable according to the pool's capacity), the flow rate, head, and efficiency of the pump must meet design specifications.

Operation should be smooth, free of abnormal sounds, vibrations, and temperature rise, with normal motor current.

Motor safety protection measures must comply with the technical requirements of submersible pumps.

8 Electrical control requirements

A.1Electric Motor

（1Motor voltage

The voltage specifications for the electric motors are as follows:

380VRated power range of the motor250KWBelow;

10kVRated power range of the motor250KWAnd so on.

（2Technical Performance Requirements

1All low-voltage motors must comply withGB18613-2020"Energy Efficiency Limit Values and Energy Conservation Evaluation Values for Small and Medium-sized Three-Phase Asynchronous Electric Motors"2Level efficiency standards.

a)All complementary asynchronous motors should no longer be used in accordance with the recent "List of Obsolete High-Energy-Consuming and Outdated Equipment and Machinery (Products) for Phase-Out (Second Batch)" issued by the Ministry of Industry and Information Technology of the People's Republic of China.2012Year14Section (Number) Announcement, as explicitly specified.YSeries Electric Motors.

b)0.55kW - 315kWMedium and small-sized three-phase asynchronous motors (hereinafter referred to as low-voltage three-phase asynchronous motors) are products subject to China's Energy Efficiency Labeling Requirements.2008Year6Month1Energy efficiency limits and energy efficiency labels begin to take effect starting today.

c)Low-voltage three-phase asynchronous motor energy efficiency level must reach2Level, specific energy efficiency rating values according to national standardsGB18613Table in the Current Edition of "Energy Efficiency Limits and Grades for Small and Medium-sized Three-Phase Induction Motors"1。

d)Low-voltage three-phase asynchronous motors should obtain energy efficiency label registration and "Energy-saving" mark certification, along with a product energy efficiency test report.

e)Low-voltage three-phase asynchronous motors or those in smaller packaging should clearly display a unified energy efficiency label.

f)Field test method for motor efficiencyGB/T 1032 The input-output power loss analysis method is used for measurement. If the energy efficiency is not achieved.2Level A requirements; the buyer has the right to refuse the motor.

2The motor design complies with the technical agreement and the specific operational requirements set forth by the manufacturer of the driven equipment. Under operating conditions, the rated output of the motor is not less than the power required by the driven equipment.115%。

3The motor is an asynchronous motor. The motor can operate within a voltage variation of ± the rated voltage of the power supply.10%Inside, or frequency variation to ± of rated frequency5%Within, or both voltage and frequency change, but the sum of the changes remains10%Operates continuously at full load.

4The motor is of direct-start type and can successfully start according to the load shown by the speed-torque curve of the driven equipment. For10kVMotor when the power voltage drops to the rated voltage70%At that time, the motor can achieve automatic startup; for380VMotor as power supply voltage drops to rated voltage55%At that time, the motor can be automatically started.

5The starting current of the motor reaches a lower value consistent with its good performance and economic design to meet the application requirements. Unless otherwise approved in writing by the buyer, the motor's starting current will be within the rated voltage conditions.10kVThe starting current of the motor must not exceed its rated current by600%，380VThe starting current of the motor must not exceed its rated current by600%。

6Within the specified limit range of starting voltage, the motor rotor's allowable starting time must not be less than its acceleration time.

7Motors start up at least under cold conditions2Each time, the start-up cycle period does not exceed5Minute; Hot Start Not Less Than1 Next.

8Under rated power operation, the motor can withstand power interruptions during rapid power switching without damage. Assume that the original power source and the new power source are synchronized before switching.

9The motor featuresFClass insulation, but its temperature rise must not exceedBLevel insulation temperature rise specification. Motor windings are treated with vacuum pressure impregnation and epoxy resin sealed insulation. The insulation can withstand the influence of the surrounding environment. The connecting wires of the motor and the insulation of the windings have the same insulation level.

10For motors equipped with drip-proof casings, the ends of the stator winding turns and the ventilation slots are treated with an elastic wear-resistant coating.

11The motor's structure can withstand the overspeed values specified for forward and reverse operation without causing equipment damage.

12The vibration amplitude of the motor does not exceed the value specified by the standard. The seller takes all reasonable precautionary measures to maintain the motor's vibration within the permissible limits.

13The higher noise level of the motor complies with the requirements of the listed specifications and standards. Distance from the housing1At a distance of 10 meters, the average sound pressure level of the electric motor must not exceed85dB（ASound Level). If the predicted noise level of the equipment exceeds the allowable limits, take measures to reduce the noise to meet the requirements of regulations and standards.

AS55-4CB Sludge Pump Main Components Material

Pump Housing:HT250

Axle45

Blade impeller:HT300

Hanging Chain: Stainless Steel304

All connecting accessories, bolts, and other fasteners: Stainless Steel304

Warranty Period: One Year

Submersible污水pump shall undergo systematic maintenance and upkeep within twelve months from the date of equipment operation acceptance.

Ensure protection to guarantee continuous and effective operation of the equipment.

(1) Duwan's environmental protection submersible pump, vertical sewage pump, and submersible mixer control cabinets all require the use of high-performance variable-frequency inverters. These inverters must include both V/F ratio control (2-point and 3-point styles), open-loop vector control without PG, square load control mode, and energy-saving mode for ease of engineer adjustment. It is particularly important to note that to demonstrate the energy-saving effect of the inverters and comply with energy-saving policy guidelines, the inverters must utilize control methods suitable for driving fan and pump loads. They should be easy to operate and maintain, with different power inverters belonging to the same series.

(2) In the event of non-hardware failures in the variable frequency inverter, the inverter can opt for shutdown modes (free shutdown/failure shutdown); until the fault is resolved, the inverter will resume normal control, reducing the number of unexpected shutdowns.

(3) The inverter must be equipped with a password lock feature to prevent accidental modification of parameters.

(4) The inverter should have an intermittent automatic jump function to prevent mechanical resonance, and it should have at least 3 jump frequencies.

(5) The inverter features protection functions such as overvoltage, overcurrent, under-voltage, phase loss of power supply, inverter overload, inverter overheating, and motor overload; the protection grade is not less than IP20, and is set in the control cabinet.

(6) The total harmonic current distortion (THDI) generated by the variable frequency inverter should not exceed 40%; the fundamental current coefficient at the input terminal should be no less than 90% under full load, and the efficiency of the inverter should not be less than 0.95 under any load condition. The power factor should not be less than 0.90 within the speed regulation range of the inverter.