Introduction
The Franke WD9088 Plug-in Waste Disposer Controller is designed to provide convenient operation of your continuous feed waste disposer when paired with a Franke air-powered switch. This unit acts as an interface, allowing the air switch to control the power supply to the disposer, enhancing safety and ease of use in your kitchen.
Safety Information
WARNING: To reduce the risk of electric shock, fire, or injury to persons, read all instructions before installing or operating this device.
- Ensure power is disconnected at the circuit breaker before installation or servicing.
- This device must be installed by a qualified electrician in accordance with all local electrical codes.
- Do not operate the disposer without water running.
- Keep hands and utensils out of the disposer opening while operating.
- This controller is designed for use with a Franke air switch only.
Package Contents
- 1 x Franke WD9088 Plug-in Waste Disposer Controller
Note: The Franke air switch is sold separately and is required for operation.
Setup and Installation
The Franke WD9088 controller is designed for easy installation, typically mounted under the sink. It facilitates the connection between your continuous feed waste disposer and a Franke air switch.
- Mounting: Securely mount the WD9088 controller to a stable surface under the sink, ensuring it is away from direct water exposure.
- Power Connection: Plug the WD9088 controller into a standard 120V electrical outlet.
- Disposer Connection: Plug your continuous feed waste disposer into the designated outlet on the WD9088 controller.
- Air Switch Connection: Connect the air tube from your Franke air switch (sold separately) to the air switch port on the WD9088 controller. Ensure a secure, airtight connection.
- Testing: Restore power at the circuit breaker. Press the air switch button to verify the disposer turns on and off correctly.

Figure 1: Franke WD9088 controller mounted under a sink, showing electrical and air switch connections.
Operating Instructions
Once properly installed, operating your waste disposer with the Franke WD9088 controller is straightforward:
- Turn on the cold water faucet to a moderate flow.
- Press the button on your Franke air switch. The disposer will activate.
- Feed food waste into the disposer opening.
- Allow the disposer to run until all waste is cleared and only the sound of the motor and running water is heard.
- Press the air switch button again to turn off the disposer.
- Turn off the cold water after a few seconds to flush the drain line.
Maintenance
The Franke WD9088 controller requires minimal maintenance. To ensure longevity and proper function:
- Cleaning: Periodically wipe the exterior of the controller with a dry cloth to remove dust and debris. Do not use abrasive cleaners or immerse the unit in water.
- Connections: Occasionally check all electrical and air tube connections to ensure they remain secure.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Disposer does not turn on. | No power to controller. | Check circuit breaker. Ensure controller is plugged in securely. |
| Disposer not plugged into controller. | Ensure disposer is securely plugged into the controller's outlet. | |
| Air switch tube disconnected or leaking. | Check air tube connection between air switch and controller for tightness. | |
| Disposer hums but does not grind. | Disposer jammed. | Refer to your disposer's manual for unjamming instructions. Do not use the WD9088 controller to force operation. |
Specifications
- Brand: Franke
- Model Number: WD9088
- Part Number: WD9088
- Color: Black
- Material: Metal
- Product Dimensions: 6"D x 6"W x 2"H
- Style: Contemporary
- Installation Type: Easy install
- Finish Type: Brushed
- Shape: Rectangular
- Drain Type Compatibility: Pop-Up (for associated disposers)
- Item Weight: 1.1 Pounds
- Wattage: 1560
- Item Package Quantity: 1
- Included Components: Product Only
- Batteries Included?: No
- Batteries Required?: No
- UPC: 612738020061
- Global Trade Identification Number (GTIN): 07612738020064
- ASIN: B0008504QC
- Date First Available: June 22, 2005
Warranty Information
For specific warranty details regarding your Franke WD9088 Plug-in Waste Disposer Controller, please refer to the documentation included with your purchase or visit the official Franke website. Warranty terms typically cover manufacturing defects for a specified period from the date of purchase.
Customer Support
Should you require assistance with installation, operation, or troubleshooting beyond the scope of this manual, please contact Franke customer support. You can find contact information on the official Franke website or through your product retailer.
Online Resources: www.franke.com





