This document is an instruction manual for the Atlas Copco WEDA Dewatering Pump, specifically for models WEDA 30 and WEDA 40, covering all options. It provides essential information for the safe and efficient operation, maintenance, and disposal of these pumps.
Function Description
The Atlas Copco WEDA dewatering pumps are electrical submersible pumps designed for dewatering applications in demanding environments such as construction sites, industry, mining, tanks, and pools. They are built for robust performance and reliability, adhering to the latest technology. The pumps are designed to handle water with a very low risk of clogging, thanks to their high chrome steel impeller. They are not intended for transporting water for human consumption, water well pumping, or installation in explosive atmospheres. They should also not be used for caustic, slightly inflammable, or other explosive substances like petrol, petroleum, diluted nitrogen, greases, oils, salt water, waste water from toilets, or sludgy water with a slower flow capacity than water. The temperature of the transported fluids should not exceed 40°C. The appliance is not suitable for use as a stationary installation (e.g., as a lifting device or fountain pump).
Important Technical Specifications
The manual provides detailed technical specifications for both WEDA 30 and WEDA 40 models.
General Specifications:
- Discharge (smooth and threaded BSP): 3" and 4" for both models.
- Max solids handling: 7 mm for both models.
- Cable length: 15 m for both models.
- Max submersed depth: 20 m for both models.
- Impeller type: Centrifugal impeller for both models.
- Impeller material: High chrome steel for both models.
- Shaft seals: Mechanical seal for both models.
- Motor protection: Thermal protection for both models.
- Motor insulation class: F for both models.
- pH range: 5-8 for both models.
- Max fluid temperature: 40°C for both models.
Weight:
- WEDA 30: 20 kg
- WEDA 40: 25 kg
Motor Data (50Hz):
- WEDA 30:
- 230V/1ph: 2.9 kW (12.0 A)
- 230V/3ph: 2.6 kW (7.3 A)
- 400V/3ph: 2.6 kW (4.5 A)
- 500V/3ph: 2.6 kW (3.5 A)
- WEDA 40:
- 230V/3ph: 3.4 kW (10.0 A)
- 400V/3ph: 3.4 kW (5.9 A)
- 500V/3ph: 3.4 kW (4.4 A)
Motor Data (60Hz):
- WEDA 30:
- 230V/1ph: 2.7 kW (11.5 A)
- 230V/3ph: 2.3 kW (6.7 A)
- 460V/3ph: 2.3 kW (3.3 A)
- WEDA 40:
- 230V/3ph: 4.4 kW (11.3 A)
- 460V/3ph: 4.4 kW (5.3 A)
Dimensions (in mm):
- WEDA 30N: H=476, D=220, W=286
- WEDA 30L: H=503, D=220, W=286
- WEDA 40: H=503, D=220, W=286
Oil Specification:
- Oil capacity: 0.25 L
- Oil part numbers: 1605 2254 00 (2 L) and 1605 2255 00 (0.5 L)
Usage Features
The WEDA pumps are designed for versatility and ease of installation due to their compact design and light weight.
- Dry running capability: The motor protector allows for dry running.
- Plug and pump: Built-in high torque capacitor (1ph) simplifies setup.
- Double mechanical seal: Runs in an oil bath for extended life.
- Overload protection: Automatically resetting thermal overload protection is built-in.
- Housing and wet end: The housing is made of aluminum, and parts of the wet end are rubber lined.
- Discharges: The pump can be equipped with various discharges, including 3" and 4" hose standards with 1 clamp, BSP thread, NPT thread, Cam lock adapter, Cam lock coupling, and Storz coupling.
- Float switch (optional): Allows for automatic starting (+55° angle) and stopping (-55° angle) of the pump. For continuous operation, the float switch can be clipped vertically.
- Motor Protection plug (optional for 400V - 3ph motors): An external motor protector (470W157811) combines an on/off switch and overload protection. It includes an indicator lamp for phase control and a plug with a phase inverter. If the indicator lamp lights red, two phases should be reversed. After a fault, the pump must be restarted manually.
- Low suction collar (optional): The 470W224848 low suction collar, made of rubber, allows pumping residual water down to 3 mm when placed 5 mm to the ground.
- Zinc anodes (optional): For pumping salt water or highly aggressive water, zinc anodes (470W209289 kit) protect the aluminum pump.
- Epoxy coating (optional): For optimum protection against salty water, aggressive substances, or high/low pH water, an epoxy resin coating (8162171300) can be applied.
Operating Instructions:
- Transport: Always use the handle; never the power cable.
- Starting: Ensure the pump is not used in explosive/inflammable environments or for flammable liquids. When pumping from a swimming pool, no one should be in the pool, and the pump must be connected via a residual current device (max 30 mA). Check the power cable for damage, and verify power supply matches data plate ratings. Ensure the fluid matches technical specifications. Minimum start water level is approximately 35 mm. Never operate without the strainer. Attach a suitable hose, avoid excessive bends, and ensure the electric cable is free from sharp bends or damage. Submerge the pump before plugging it in and avoid installing it on weak/muddy ground.
- Stopping: Unplug and remove the pump. If operated in dirty water, run it in clean water or flush the discharge port to prevent clogging.
Maintenance Features
The manual outlines a preventive maintenance schedule and specific maintenance tasks.
Preventive Maintenance Schedule:
- Every month: Grease check, check wear parts, check cable, check cable gland, check pipes/valves, check float switch/level sensor NVB function, check external damage/loose parts.
- Every 3 months: Pump lubrication.
- Every 6 months: Stator measurement.
- Every 12 months (in use): Adjustment of pump performance, replace sealing's of sealing package, replace bearings of sealing package, check contactor function.
- When worn: Change wear parts.
Specific Maintenance Tasks:
- External damage, loose parts: Ensure all screws, bolts, and nuts are tight. Replace damaged or worn lifting handle or other external parts.
- Motor insulation resistance: Use a 500 V DC Megger to measure insulation between phases and ground. Resistance should be over 1 M ohm. If readings are abnormal, the pump needs repair.
- Oil: Check oil condition for water leakage. Remove the oil plug, take a sample, and check for impurities/emulsification. If water intrusion occurred, the seal must be replaced. Refill with fresh oil according to specifications.
- Impeller: Inspect the impeller by removing the strainer and wear plate. Replace if damaged or severely worn.
- Power cable: Inspect for cuts, scrapes, or sharp bends. Replace if the outer jacket is damaged; do not splice within wet wells.
- Cable entry: Ensure the cable entry flange and strain relief clamp are tight. Replace if signs of leakage are present.
Troubleshooting:
The manual includes a troubleshooting guide for common issues like the pump not running, starting and stopping, or having low capacity, along with their causes and recommended actions.
Warranty and Disposal:
- Warranty: Covers failures caused by faulty material or manufacturing defects within the warranty period. Use only authorized parts; unauthorized modifications or non-original parts void the warranty.
- Disposal: Emphasizes professional disposal to prevent negative environmental consequences. Separate contaminated substances and materials according to local regulations. Drain and dispose of all fluids before dismantling. Separate the machine into metal, wiring, hoses, insulation, and plastic parts for recycling. Avoid draining fluids into sewage systems or surface water.
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