1. Introduction
This manual provides essential information for the safe and efficient operation, installation, and maintenance of your Delavan 6900C-R RollerPro 6-Roller Pump. Please read these instructions thoroughly before operating the pump to ensure proper function and to prevent damage or injury. Keep this manual for future reference.
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) such as safety glasses and gloves when installing, operating, or maintaining the pump.
- Ensure the pump is securely mounted before connecting to any power source or plumbing.
- Verify that all connections are tight and leak-free before operation.
- Do not exceed the maximum operating pressure, flow rate, or fluid temperature specified for this pump.
- Disconnect power to the pump before performing any maintenance or service.
- Do not operate the pump with flammable or corrosive liquids unless specifically designed for such applications. This pump is designed for general fluid transfer.
- Keep hands, hair, and clothing clear of moving parts during operation.
3. Product Overview
The Delavan 6900C-R RollerPro is a robust 6-roller pump designed for various fluid transfer applications. Its reverse rotation capability allows for direct drive by a gas engine. Constructed with a durable cast iron housing and Viton seals, it offers reliable performance within its specified operating parameters.
Figure 3.1: Delavan 6900C-R RollerPro 6-Roller Pump. This image displays the pump's main body, inlet and outlet ports, and shaft connection point.
Key Features:
- Maximum flow rate of 19.6 Gallons Per Minute (GPM).
- Maximum pressure rating of 150 PSI.
- Operates at speeds up to 1200 RPM.
- Handles fluid temperatures up to 140°F (60°C).
- Features 3/4 inch NPT inlet and outlet side ports.
- Equipped with a 5/8 inch solid shaft.
- Clockwise (reversed) shaft rotation for gas engine compatibility.
- Durable cast iron housing.
- Viton seals and seal ring for chemical resistance.
- Utilizes six 3/4 inch diameter Ultra rollers.
4. Setup and Installation
Proper installation is crucial for the pump's performance and longevity. Follow these steps carefully:
- Mounting: Securely mount the pump to a stable, level surface capable of supporting its weight and the forces generated during operation. Ensure adequate ventilation around the pump.
- Shaft Connection: Connect the pump's 5/8 inch solid shaft to the power source (e.g., gas engine) ensuring proper alignment. The pump is designed for clockwise (reversed) shaft rotation.
- Plumbing Connections:
- Connect the suction line to the 3/4 inch NPT inlet port. Ensure the suction line is free of kinks and obstructions and is adequately sized to prevent cavitation.
- Connect the discharge line to the 3/4 inch NPT outlet port.
- Use appropriate thread sealant on all NPT connections to prevent leaks.
- Fluid Compatibility: Ensure the fluid being pumped is compatible with cast iron and Viton seals.
- Initial Priming: For optimal performance, especially with new installations, ensure the pump is primed according to the fluid system requirements before starting.
5. Operating Instructions
Follow these guidelines for safe and effective pump operation:
- Pre-Operation Check: Before starting, inspect all connections for leaks, ensure the fluid supply is adequate, and confirm the pump is securely mounted.
- Starting the Pump: Engage the power source (e.g., start the gas engine) gradually, allowing the pump to reach its operating speed. Do not exceed 1200 RPM.
- Monitoring: During operation, monitor the pump for unusual noises, vibrations, or leaks. Ensure the fluid temperature does not exceed 140°F (60°C) and pressure remains below 150 PSI.
- Stopping the Pump: Disengage the power source and allow the pump to come to a complete stop.
- Dry Running: Avoid dry running the pump, as this can cause damage to the rollers and seals. Ensure there is always fluid in the system during operation.
6. Maintenance
Regular maintenance ensures optimal performance and extends the life of your Delavan pump. Always disconnect power before performing maintenance.
- Roller Inspection: Periodically inspect the six 3/4 inch Ultra rollers for wear, cracks, or damage. Worn rollers can reduce pump efficiency. Replace as needed.
- Seal Inspection: Check the Viton seals and seal ring for signs of wear or leakage. Replace seals if any leakage is observed or if they appear degraded.
- Housing Inspection: Inspect the cast iron housing for any signs of corrosion or damage. Clean the exterior of the pump regularly.
- Lubrication: Refer to the specific lubrication requirements for your power source (e.g., gas engine) and ensure the pump's shaft connection point is adequately lubricated if required by the drive mechanism. The pump itself is typically lubricated by the fluid being pumped.
- Winterization (if applicable): If operating in freezing conditions, drain all fluid from the pump and lines to prevent damage from ice expansion.
7. Troubleshooting
This section provides solutions to common issues you might encounter with your pump.
| Problem | Possible Cause | Solution |
|---|---|---|
| Pump does not prime or has low flow | Air leak in suction line; Suction line clogged; Worn rollers; Insufficient fluid supply; Pump not primed. | Check all suction connections for tightness; Clear any obstructions in the suction line; Inspect and replace worn rollers; Ensure adequate fluid supply; Manually prime the pump. |
| Low pressure | Worn rollers; Leaking seals; Obstruction in discharge line; Operating speed too low. | Inspect and replace worn rollers; Replace leaking seals; Clear discharge line; Increase operating speed within limits. |
| Excessive noise or vibration | Cavitation (air in fluid); Misalignment of pump and drive shaft; Loose mounting; Worn bearings (if applicable) or rollers. | Check suction line for air leaks or obstructions; Verify shaft alignment; Tighten mounting bolts; Inspect rollers for wear. |
| Fluid leakage | Worn or damaged seals; Loose plumbing connections; Cracked housing. | Replace seals; Tighten all NPT connections; Inspect housing for damage and replace pump if cracked. |
8. Specifications
| Attribute | Value |
|---|---|
| Model Number | 6900C-R |
| Brand | Delavan |
| Maximum Flow Rate | 19.6 GPM (Gallons Per Minute) |
| Maximum Pressure | 150 PSI |
| Maximum Operating Speed | 1200 RPM |
| Maximum Fluid Temperature | 140°F (60°C) |
| Inlet/Outlet Port Size | 3/4 inch NPT (side ports) |
| Shaft Size | 5/8 inch solid shaft |
| Shaft Rotation | Clockwise (reversed) |
| Number of Rollers | 6 |
| Roller Diameter | 3/4 inch (Ultra rollers) |
| Housing Material | Cast Iron |
| Seal Material | Viton |
| Item Weight | 9 lbs. |
| Power Source | Gas Powered |
9. Warranty and Support
Warranty: According to product specifications, this Delavan 6900C-R RollerPro pump is sold without a manufacturer's warranty. Please refer to your point of purchase for any return or exchange policies.
Technical Support: For technical assistance or inquiries regarding replacement parts, please contact Delavan customer service or visit their official website. Ensure you have your pump model number (6900C-R) available when seeking support.
