Tsurumi KRS822L Submersible Pump
Spare Parts for KRS822L / 22.0kW 415v 50Hz
Product Summary
The KRS822L-61 is a heavy-duty 22kW (30HP) submersible slurry pump featuring a 4-pole motor for excellent durability and extended service life. Designed for high-volume dewatering, it features a low-speed agitator (optional on some specs, but standard KRS series relies on open impeller for solids) and a top-discharge design that flows water over the motor for superior cooling. This unit is built for demanding civil engineering, construction, and mining applications where moving large volumes of water with silt/sand is required.
- 4-Pole Motor: Operates at slower speeds (1800 RPM) to reduce wear on the impeller and casing, significantly extending part life in abrasive conditions.
- Forced Motor Cooling: Top discharge design ensures the pumped fluid flows over the motor housing, preventing overheating even during dry-run or low water level operation.
- High Chrome Impeller: Manufactured from high-chromium cast iron to resist the abrasive effects of sand, silt, and construction debris.
- Dual Mechanical Seals: Silicon carbide faces situated in a separate oil chamber provide double protection against water intrusion.
- Heavy Duty Construction: Features a ductile iron suction cover and grey iron casting body to withstand rough handling on job sites.
Spare Parts List
| Select | Qty | Part Number | Description | Material / Spec |
|---|---|---|---|---|
| 1 | 025-000-64 | Mechanical Seal Set (H-50) | Silicon Carbide | |
| 1 | 021-001-52 | Impeller | High Chrome Cast Iron | |
| 1 | 022-000-66 | Suction Plate | Gray Cast Iron | |
| 1 | 173-001-08 | O-Ring / Gasket Set | NBR / Rubber | |
| 1 | 030-000-51 | Oil Lifter | PBT Resin | |
| 1 | 026-000-17 | Oil Seal | NBR / TC709212 | |
| 1 | 052-000-13 | Upper Bearing | #6309ZZC3 | |
| 1 | 052-000-15 | Lower Bearing | #6311ZZC3 | |
| 1 | 001-000-64 | Power Cable (Cabtyre) | Chloroprene Sheath | |
| 1 | 023-000-53 | Strainer Stand | Steel | |
| 1 | 020-000-47 | Pump Casing | Gray Cast Iron | |
| 1 | 006-000-21 | Stuffing Box | Gray Cast Iron | |
| 1 | 032-001-20 | Hose Coupling (8 Inch) | Cast Iron | |
| 1 | 054-000-45 | Shaft | Stainless Steel 420 | |
| 4 | 140-000-09 | Hex Bolt (M16x50) | Stainless Steel 304 | |
| 1 | 050-000-40 | Motor Bracket | Gray Cast Iron | |
| 1 | 053-000-13 | Motor Protector | - |
Exploded Parts Views
Key Technical Specifications
| Parameter | Value |
|---|---|
| Model / Curve | KRS822L-61 |
| Rated Power | 22 kW (30 HP) |
| Voltage / Frequency | 460 / 575 V / 60 Hz |
| Rated Current | 36 A (460V) / 29 A (575V) |
| Discharge Connection | 8" (200mm) Hose Coupling |
| Impeller Type | Open / High Chrome Iron |
| Installation Type | Submersible / Free Standing |
Troubleshooting, Common Faults & Solutions
Pump fails to start
Likely Cause: Open circuit or voltage drop.
Action / Part: Check fuses and inspect Power Cable (Part 001) for damage.
Pump stops shortly after starting
Likely Cause: Motor protector tripped due to overload (clogged strainer/impeller).
Action / Part: Clean Suction Strainer (Part 023) and check Impeller (Part 021) for blockage.
Low discharge volume
Likely Cause: Impeller worn out or reverse rotation.
Action / Part: Replace Impeller (Part 021) or swap power phases.
Heavy Vibration
Likely Cause: Bearing failure or damaged impeller.
Action / Part: Inspect/Replace Bearings (Parts 052) or Impeller.
Oil emulsified (Milky)
Likely Cause: Mechanical seal leak allowing water into oil.
Action / Part: Replace Mechanical Seal Set (Part 025).
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