1. Introduction
This manual provides essential information for the safe and efficient installation, operation, and maintenance of your Delavan 8900C Cast Iron 8-Roller Pump. Please read this manual thoroughly before using the pump to ensure proper function and longevity.
2. Safety Information
WARNING: Failure to follow these safety instructions could result in serious injury or property damage.
- Always wear appropriate personal protective equipment (PPE) when installing, operating, or maintaining the pump.
- Ensure the power source (e.g., PTO) is disengaged and secured before performing any installation, maintenance, or repair work.
- Do not exceed the maximum operating pressure (150 PSI) or speed (1000 RPM) specified for this pump.
- Verify all connections are secure and leak-free before operation.
- Do not operate the pump with flammable liquids or in explosive atmospheres unless specifically designed for such use.
- Keep hands, hair, and clothing clear of moving parts during operation.
- This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm (Proposition 65 warning).
3. Product Overview
The Delavan 8900C is a robust 8-roller cast iron pump designed for various agricultural and industrial spraying applications. Its design emphasizes durability and ease of maintenance.
Figure 3.1: Side view of the Delavan 8900C pump, showing the main body and threaded outlet port.
Figure 3.2: Front view of the Delavan 8900C pump, highlighting the RollerPRO® 8-Roller Pump Delavan 8900C branding.
Key Features:
- 8-Roller Design: Efficient fluid transfer.
- Cast Iron Housing: Durable construction for demanding environments.
- Field Serviceable: Rollers can be replaced quickly, typically in about 3 minutes.
- High-Quality Components: Features "Ultra" rollers, heavy-duty sealed bearings, Viton seal rings, and stainless steel shafts and rotors for extended life.
4. Setup and Installation
Proper installation is crucial for the pump's performance and longevity. Refer to the following steps for setup.
4.1 Mounting the Pump
The pump is designed for base mounting using two 3/8 -18 UNC-2B holes. Ensure the mounting surface is stable and level to prevent vibration and misalignment.
Figure 4.1: Bottom view of the pump, illustrating the base mounting holes for secure installation.
Figure 4.2: Top view of the pump, showing the 15/16" solid shaft for power take-off connection.
4.2 Connecting to Power Take-Off (PTO)
Connect the pump to your equipment's PTO using a torque bar and chain. The pump features a 15/16” solid shaft. The standard rotation is Counter-Clockwise (CCW). Ensure correct alignment and secure connection to prevent damage.
4.3 Plumbing Connections
The pump has 1” NPT (female) port sizes for both inlet and outlet. Use appropriate plumbing fittings and sealants to ensure leak-free connections. Always use a suction hose that is adequately sized and reinforced to prevent collapse under vacuum.
Figure 4.3: Angled view of the pump, clearly showing the 1" NPT threaded ports for fluid connections.
5. Operating Instructions
Follow these guidelines for safe and effective operation of your Delavan 8900C pump.
- Priming: Ensure the pump is adequately primed before starting. Operating a roller pump dry can cause rapid wear and damage.
- Operating Speed: Do not exceed the maximum operating speed of 1,000 RPM. Monitor your PTO speed to stay within this limit.
- Pressure Control: The maximum operating pressure is 150 PSI. Use a pressure regulator or bypass valve to control system pressure and prevent over-pressurization.
- Temperature: The maximum recommended fluid temperature is 140°F (60°C). Operating above this temperature can reduce pump life.
- Fluid Compatibility: Ensure the fluid being pumped is compatible with cast iron, Viton seals, and stainless steel components.
6. Maintenance
Regular maintenance extends the life of your pump and ensures optimal performance.
6.1 Roller Replacement
The Delavan 8900C is designed for quick roller replacement, typically taking about 3 minutes. Refer to the manufacturer's specific instructions for detailed steps on how to access and replace the "Ultra" rollers. Timely replacement of worn rollers is essential for maintaining pump efficiency and pressure.
6.2 Bearing Lubrication
The pump features permanently-lubricated, heavy-duty sealed bearings, which generally do not require additional lubrication under normal operating conditions.
6.3 Winterization and Storage
Before storing the pump for extended periods, especially in freezing temperatures, it is critical to drain all water and flush the pump with a suitable anti-freeze solution or light oil. The pump may feature a drain plug (often 1/4") for this purpose. After draining, circulate a small amount of motor oil through the pump to coat internal components and prevent corrosion.
7. Troubleshooting
This section addresses common issues you might encounter with your pump.
| Problem | Possible Cause | Solution |
|---|---|---|
| Pump does not build pressure or low pressure. |
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| Pump leaks. |
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| Pump operates in reverse. |
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8. Specifications
| Model | 8900C |
| Type | 8-Roller design |
| Max. Flow | 24.0 GPM |
| Max Operating Speed | 1,000 RPM |
| Max Pressure | 150 PSI |
| Max Recommended Temperature | 140°F (60°C) |
| Port Size | 1” NPT (female) |
| Base Mounted | 3/8 -18 UNC-2B (2 holes) |
| PTO Connection | Use torque bar and chain |
| Shaft Size | 15/16” solid shaft |
| Rotation | CCW (standard) |
| Housing Material | Cast Iron |
| Rollers | 3/4” Ultra rollers (standard) |
| Shaft Seals | Viton cartridge type lip seals |
| Seal Ring | Viton |
| Shaft & Rotor | Extra-fine finish 404 SST |
| Bearings | Permanently-lubricated, heavy-duty sealed bearings |
| Product Dimensions | 6"L x 6"W x 6"H |
| Item Weight | 13.89 Pounds |
| UPC | 830344004002 |
9. Warranty Information
Specific warranty details for the Delavan 8900C pump are not provided in this manual. For information regarding warranty coverage, terms, and conditions, please refer to the documentation included with your purchase or contact Delavan directly.
10. Customer Support
If you require technical assistance, replacement parts, or have questions not covered in this manual, please contact Delavan customer support. Contact information can typically be found on the manufacturer's official website or on your product packaging.
