Mono Compact C18B Pump
Spare Parts for Compact C18B Pump
Product Summary
The Mono Compact C18B represents a premium two-stage progressive cavity pump engineered for the most demanding high-flow industrial applications. Combining substantial pumping capacity with precision engineering, this heavy-duty model delivers exceptional performance in challenging process environments requiring both high pressures and flow rates.
- Maximum Flow Capacity: Large frame two-stage design provides industry-leading flow rates while maintaining the smooth, pulse-free operation essential for sensitive process applications
- Industrial-Grade Construction: Heavy-duty cast iron body and reinforced internal components engineered for continuous duty cycles in harsh operating conditions
- Advanced Pin Joint System: Sealed universal joint configuration ensures reliable torque transmission with extended service intervals and field-proven durability
- Superior Self-Priming: Exceptional suction lift capability exceeding 8 metres enables flexible installation positioning and eliminates need for flooded suction arrangements
- Process Versatility: Wide selection of elastomer and rotor materials available to handle everything from food-grade products to aggressive chemicals and abrasive slurries
Spare Parts List
| Select | Qty | Part Number | Description | Material / Spec |
|---|---|---|---|---|
| 1 | C18B-KIT-FULL | Complete Rotor/Stator Service Kit | Includes rotor, stator, gaskets | |
| 1 | C18B-KIT-SEAL | Mechanical Seal Service Kit | Complete seal assembly with gaskets | |
| 1 | C18B-KIT-PIN | Pin Joint Service Kit | Complete joint assembly with pins | |
| 1 | 22A | Stator Assembly | Nitrile rubber (MTM grade) - 24.6 kg | |
| 1 | 25A | Rotor Assembly | Stainless steel helical - 33.7 kg | |
| 1 | 32A | Drive Shaft | 65mm diameter, hardened steel - 8.7 kg | |
| 1 | 26A | Coupling Rod Assembly | Pin joint type - 12.3 kg | |
| 1 | 10A | Mechanical Seal Assembly | DIN L1K type, 65mm shaft | |
| 1 | 65A | Mechanical Seal Carrier | Cast iron housing | |
| 1 | 01B | Bearing Housing | Cast iron with integrated bearings | |
| 2 | 29A | Coupling Rod Pin | Hardened steel | |
| 2 | 29B | Coupling Rod Pin (Drive End) | Hardened steel | |
| 1 | 29C | Shaft Pin | Hardened steel | |
| 1 | 28A | Sealing Cover (Suction End) | Rubber boot seal | |
| 1 | 28B | Sealing Cover (Drive End) | Rubber boot seal | |
| 1 | 75A | Shaft Sleeve | Stainless steel protective sleeve | |
| 1 | 75B | Rotor Sleeve | Stainless steel protective sleeve | |
| 4 | 95A | Stator Tie Bar | High tensile steel tie rod | |
| 1 | 23A | Suction Chamber | Cast iron housing | |
| 1 | 23B | Suction Chamber Extension | Cast iron extension housing | |
| 1 | 24A | End Cover | Cast iron end plate | |
| 1 | 01A | Pump Body | Cast iron main casing | |
| 1 | 42A | Thrower | Shaft protection disc | |
| 1 | 15A | Thrower Guard | Protective cover assembly | |
| 1 | 66A | Abutment Ring | Seal support ring | |
| 2 | 62A | Support Foot | Cast iron mounting foot | |
| 1 | 20A | Inspection Cover Gasket | Non-asbestos material | |
| 1 | 20B | Gland Gasket | Non-asbestos material | |
| 2 | P401 | O-Ring Seal | Nitrile rubber | |
| 2 | P402 | O-Ring Seal (Large) | Nitrile rubber | |
| 2 | P403 | Spiral Retaining Ring | Spring steel | |
| 2 | P404 | Spiral Retaining Ring (Secondary) | Spring steel | |
| 2 | P405 | Sealing Cover Tie | Stainless steel band | |
| 2 | P406 | Sealing Cover Tie (Drive End) | Stainless steel band | |
| 12 | P105 | Hex Nut M12 | Grade 8 zinc plated | |
| 12 | P106 | Flat Washer M12 | Zinc plated steel | |
| 12 | P107 | Spring Washer M12 | Zinc plated spring steel | |
| 1 | KLUBER-D460 | Joint Lubrication Grease | Klüber Syntheso D460 EP Oil (175ml) | |
| 1 | BP-LC2 | Bearing Grease | BP Energrease LC2 or equivalent |
Exploded Parts Views
Key Technical Specifications
| Parameter | Value |
|---|---|
| Model / Curve | Compact C18B / Two-Stage |
| Rated Power | Varies by application (typically 7.5 - 15 kW) |
| Voltage / Frequency | 240V/415V / 50Hz (other voltages available) |
| Rated Current | Application dependent |
| Discharge Connection | Flanged (size varies by application) |
| Impeller Type | Progressive Cavity (Helical Rotor/Stator) |
| Installation Type | Horizontal Baseplate Mounted |
Troubleshooting, Common Faults & Solutions
No Discharge from Pump
Likely Cause: Incorrect rotation direction, pump unprimed, or blocked delivery line
Action / Part: Verify motor rotation matches nameplate arrow, prime pump with liquid, clear blockages in discharge pipework
Loss of Capacity / Reduced Flow
Likely Cause: Worn rotor/stator elements, insufficient NPSH, or air entering suction line
Action / Part: Replace rotor (25A) and/or stator (22A), increase suction head, check gland adjustment and pipe joints for air leaks
Pump Stalls at Start-Up
Likely Cause: Product viscosity too high, low voltage, or drive train failure
Action / Part: Heat product to reduce viscosity, verify electrical supply voltage, inspect coupling rod (26A) and pin joints (29A, 29B, 29C) for damage
Excessive Noise and Vibration
Likely Cause: Misaligned coupling, worn bearings, or insecure pump mounting
Action / Part: Check and adjust alignment to motor/gearbox, replace shaft bearings (lubricate with BP LC2 grease), tighten all baseplate mounting bolts
Excessive Gland or Seal Leakage
Likely Cause: Worn drive shaft, damaged mechanical seal, or inadequate gland flush
Action / Part: Replace drive shaft (32A) if gland area worn, install new mechanical seal assembly (10A), ensure proper seal flush fluid flow
Motor Overheats / Excessive Power Draw
Likely Cause: Delivery pressure above rated limit, gland overtightened, or pump speed too high
Action / Part: Check for delivery line blockages, loosen packed gland to allow slight drip, reduce pump speed, verify relief valve setting
Rapid Stator Wear / Premature Failure
Likely Cause: Dry running, abrasive product, or product temperature exceeding rating
Action / Part: Install dry-run protection device, ensure pump always primed before starting, cool product or upgrade to temperature-rated stator material, replace with new stator (22A)
Stuffing Box Rapidly Consumes Packing
Likely Cause: Worn shaft surface in packing area
Action / Part: Inspect drive shaft (32A) for wear grooves, replace shaft if gland area damaged, ensure regular gland maintenance schedule
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