Wentworth WP-GT-35 Commercial Grease Trap Interceptor User Manual

1. Introduction

The Wentworth WP-GT-35 Commercial Grease Trap Interceptor is designed to efficiently separate fats, oils, and grease (FOG) from wastewater before it enters the main drainage system. This process helps prevent drain blockages, protects plumbing infrastructure, and ensures compliance with environmental regulations in commercial kitchen settings. This manual provides essential information for the safe and effective installation, operation, and maintenance of your grease trap.

2. Safety Information

• Always wear appropriate personal protective equipment (PPE) including gloves and eye protection during installation, operation, and maintenance.
• Ensure the grease trap is installed on a stable, level surface capable of supporting its weight (approximately 132 pounds when empty, significantly more when full).
• All plumbing connections must be secure and leak-free to prevent water damage and potential health hazards.
• Exercise caution when handling the unit due to its weight and sharp edges. Use proper lifting techniques or equipment.
• Do not dispose of hazardous chemicals or corrosive substances into the grease trap, as this may damage the unit or compromise its function.
• Ensure adequate ventilation in the installation area.

3. Product Overview

The Wentworth WP-GT-35 is a robust commercial grease trap constructed from 11-gauge (1/8”) heavy-duty carbon steel, featuring a thick-film powder coating for enhanced corrosion protection. It is designed for high-demand environments and PDI certified.

Key Features:

• Durable Construction: Made from 11-gauge carbon steel with heavy-duty anti-corrosion powder coating.
• Efficient Separation: Designed for effective separation of fats, oils, and grease from wastewater.
• Secure Connections: Inlet and outlet are designed with threaded, welded connections for a tight seal.
• Leak Prevention: The cover is equipped with a rubber seal to prevent sideways leakage.
• Capacity: 70-pound grease capacity, 35 GPM flow rate.

Figure 1: Wentworth WP-GT-35 Grease Trap showing overall dimensions (30.5" L x 17.9" W x 19.3" H) and PDI certification.

Figure 2: Detailed view highlighting heavy-duty corrosion protection, threaded inlet/outlet for secure connections, and the rubber seal on the cover for leak prevention.

4. Setup and Installation

The WP-GT-35 grease trap is designed for under-sink or floor-mount installation in commercial kitchens. Proper installation is crucial for effective operation and to prevent plumbing issues.

Installation Steps:

1. Site Selection: Choose a location under a sink or on the floor that is easily accessible for maintenance and cleaning. Ensure the surface is level and strong enough to support the unit.
2. Positioning: Place the grease trap in the desired location. The unit features a grease inlet and a water outlet. The inlet and outlet diameter is 4 inches.
3. Plumbing Connections: Connect the kitchen sink's drain line to the grease inlet of the trap. Connect the water outlet of the trap to the main drainage system. Ensure all connections are tightly sealed using appropriate plumbing fittings and sealants to prevent leaks.
4. Leveling: Verify that the grease trap is level to ensure proper flow and separation of FOG.
5. Testing: After installation, slowly run water through the sink to check for any leaks at the connections. Monitor the grease trap's function to ensure water flows freely through the unit.

Figure 3: Typical under-sink installation diagram showing the grease inlet and water outlet connections.

5. Operating Instructions

The Wentworth WP-GT-35 operates passively by allowing wastewater to flow through its internal baffles. As the water slows down, fats, oils, and grease (FOG) cool and solidify, rising to the surface due to their lower density. Solids settle at the bottom, while clarified water exits the trap to the drainage system.

• Ensure the grease trap cover is securely in place during operation to prevent odors and accidental spills.
• Avoid pouring large quantities of hot grease directly into the sink, as this can overwhelm the trap and reduce its efficiency. Allow grease to cool and dispose of it separately when possible.
• Do not use chemical drain cleaners, as these can emulsify grease, allowing it to pass through the trap and potentially damage the unit or plumbing.

6. Maintenance

Regular maintenance is essential to ensure the longevity and effective performance of your grease trap. The frequency of cleaning will depend on the volume and type of FOG generated by your kitchen operations.

Cleaning Procedure:

1. Preparation: Ensure the sink connected to the grease trap is not in use. Place a suitable container nearby for collecting the removed grease and solids.
2. Access: Carefully remove the grease trap cover.
3. Remove FOG: Skim the accumulated layer of grease from the surface of the water using a scoop or similar tool. Transfer the grease into the waste container.
4. Remove Solids: Remove any settled solids from the bottom of the trap.
5. Clean Interior: Wipe the interior surfaces of the trap with a dry cloth to remove any remaining residue. Avoid using harsh chemicals.
6. Inspect: Check the baffles and internal components for any damage or excessive buildup.
7. Reassemble: Replace the cover, ensuring the rubber seal is properly seated and the cover is securely fastened.

Product Care Instructions: Wipe with Dry Cloth.

Figure 4: Internal view of the grease trap, showing baffles and compartments for FOG separation.

7. Troubleshooting

If you encounter issues with your Wentworth WP-GT-35 grease trap, consider the following common problems and solutions:

• Slow Drainage: This is typically caused by an accumulation of FOG and solids within the trap. Increase the frequency of cleaning. Ensure the inlet and outlet pipes are not obstructed.
• Odors: Odors usually indicate that the grease trap needs cleaning. Ensure the cover is properly sealed after cleaning.
• Leaks: Check all plumbing connections for tightness. Inspect the rubber seal on the cover for damage or improper seating. If the unit itself is leaking, contact customer support.
• Grease in Drain Line (downstream): This suggests the grease trap is not functioning effectively. This could be due to infrequent cleaning, improper installation (e.g., not level), or the trap being undersized for the volume of FOG. Review cleaning schedule and installation.

8. Specifications

9. Warranty and Support

For warranty information or technical support regarding your Wentworth WP-GT-35 Commercial Grease Trap Interceptor, please contact Wentworth customer service. Keep your purchase receipt and model number handy for faster service.

Contact information can typically be found on the manufacturer's official website or through your point of purchase.