1. Introduction
Thank you for choosing the SNDOAS GF3990S 36-inch Under Cabinet Range Hood. This manual provides essential information for the safe installation, operation, and maintenance of your new range hood. Please read it thoroughly before use and retain it for future reference.
This range hood is designed to effectively remove smoke, steam, and cooking odors from your kitchen, ensuring a cleaner and more comfortable cooking environment. It features a versatile design allowing for both ducted and ductless ventilation options.
2. Important Safety Information
WARNING: To reduce the risk of fire, electric shock, or injury to persons, observe the following:
- Install this range hood in accordance with all specified instructions.
- Ensure the electrical supply matches the voltage and frequency requirements (110-120V/60Hz).
- Always disconnect power before servicing or cleaning the unit.
- Do not operate any fan with a damaged cord or plug. Discard fan or return to an authorized service facility for examination and/or repair.
- Adequate ventilation is required for proper combustion and exhausting of gases through the flue (chimney) of fuel-burning equipment to prevent back-drafting.
- When cutting or drilling into wall or ceiling, do not damage electrical wiring and other hidden utilities.
- Ductwork must always be vented to the outdoors.
- Clean grease filters frequently. Grease should not be allowed to accumulate on fan or filter.
- Never leave surface units unattended at high settings. Boil-over causes smoking and greasy spill-overs that may ignite.
- Use appropriate size cookware on each burner.
3. Package Contents
Your SNDOAS GF3990S range hood package includes the following items:
- Hood body
- Carbon filter (Part # CF-3976)
- User manual
- Installation hardware
Note: An aluminum exhaust pipe for ducted installation and a power cord kit (Part # PCK-GF3976) for plug-in mounted conversion are not included and must be purchased separately if required.
4. Product Specifications
| Feature | Specification |
|---|---|
| Brand | SNDOAS |
| Model Number | GF3990S |
| Product Dimensions (D x W x H) | 17.5"D x 35.9"W x 4.7"H |
| Color | Silver |
| Material Type | Stainless Steel |
| Air Flow Capacity | Max. 230 Cubic Feet Per Minute (CFM) |
| Noise Level | 55 Decibels |
| Mounting Type | Under Cabinet Mount |
| Controls Type | Rocker Switch |
| Number of Speeds | 2 |
| Light Source | LED (2 watts) |
| Voltage/Frequency | 110-120V/60Hz |
| Input Power | 52 watts |
| Filter Type | Mesh (with carbon sponge) |
| Ventilation Type | Convertible (Ducted/Ductless) |
| Venting Outlets | 7" round top vent, 9.9"x3.1" rectangular rear vent |
Figure 4.1: Range Hood Dimensions and Venting Options. The hood measures 35.4 inches wide, 17.5 inches deep, and 4.7 inches high. It features a 7-inch round top vent and a 9.9 x 3.1-inch rectangular rear vent.
5. Installation
The SNDOAS GF3990S range hood offers flexible installation options: ducted (vented to the outside) or ductless (recirculating air). It is designed for under-cabinet mounting.
5.1 Choosing Your Ventilation Method
- Ductless (Recirculating) Installation: This is the default setup. The included carbon sponge filter (Part # CF-3976) purifies the air before recirculating it back into the kitchen. No external ductwork is required.
- Ducted (Vented) Installation: For external venting, you will need to purchase an aluminum exhaust pipe separately. The hood provides two venting outlets: a 7-inch round top vent and a 9.9"x3.1" rectangular rear vent. Choose the appropriate outlet based on your kitchen's existing ductwork or new installation plan.
Figure 5.1: Installed SNDOAS Range Hood. This image demonstrates the range hood's appearance when mounted under a kitchen cabinet.
Figure 5.2: Ductless Recirculation Mode. This diagram shows how the range hood operates in ductless mode, filtering air through a carbon sponge filter and releasing it back into the room.
Figure 5.3: Ducted Exhaust Mode (Top Venting). This diagram illustrates the air path when the range hood is configured for ducted top venting.
5.2 Electrical Connection
The range hood defaults to hard-wired installation. If you prefer a plug-in mounted setup, you will need to purchase a power cord kit (Part # PCK-GF3976) separately.
Figure 5.4: Hard-wired Installation. This image highlights the hard-wired connection point and the optional power cord kit for converting to a plug-in setup.
CAUTION: All electrical work must be performed by a qualified electrician and in accordance with all applicable codes and standards.
6. Operation
The SNDOAS GF3990S range hood is equipped with simple rocker switches for controlling the fan speed and lighting.
6.1 Fan Control
The fan features two speed settings to accommodate various cooking needs:
- Low Speed: Ideal for light cooking, simmering, or when minimal ventilation is required.
- High Speed: Provides maximum airflow (up to 230 CFM) for heavy cooking, frying, or when strong odors are present.
Use the rocker switch labeled with fan icons to select your desired fan speed.
Figure 6.1: Two-Speed Fan Control. This image shows the rocker switch for fan speed selection and the visual representation of low and high airflow.
6.2 Lighting Control
The range hood includes a 2-watt LED light located at the front to provide additional illumination for your cooking area.
- Use the rocker switch labeled with a light bulb icon to turn the LED light ON or OFF.
Figure 6.2: LED Lighting. This image highlights the integrated LED light and its control switch, providing clear visibility over the stove.
7. Maintenance
Regular maintenance ensures optimal performance and longevity of your range hood.
7.1 Cleaning the Exterior
The stainless steel brushed finish is designed for easy cleaning. Simply wipe the exterior surfaces with a soft cloth and a mild, non-abrasive cleaner. Avoid harsh chemicals or abrasive pads that could scratch the finish.
Figure 7.1: Easy Cleaning. This image shows the simple process of cleaning the range hood's stainless steel surface.
7.2 Filter Maintenance
The range hood is equipped with a 3-layer aluminum mesh filter that includes a carbon sponge (Part # CF-3976). This filter is crucial for capturing grease and filtering odors, especially in ductless mode.
- Cleaning Aluminum Mesh Filters: The aluminum mesh filters should be cleaned regularly (e.g., monthly, depending on cooking frequency) to prevent grease buildup. They can typically be washed by hand with warm, soapy water or placed in a dishwasher. Ensure they are completely dry before re-installing.
- Replacing Carbon Sponge Filters: For effective odor filtration in ductless mode, the carbon sponge filter (Part # CF-3976) should be replaced every 3-6 months, depending on your cooking habits and kitchen conditions. Accumulated grease and odors will reduce its effectiveness.
Figure 7.2: 3-Layer Aluminum Mesh Filter with Carbon Sponge. This diagram details the filter's construction and its role in air purification.
8. Troubleshooting
Before contacting customer service, please refer to the following common issues and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Fan does not operate | No power supply; Fan switch is OFF; Motor malfunction. | Check power connection and circuit breaker; Turn fan switch ON; Contact customer support for motor issues. |
| Light does not work | No power supply; Light switch is OFF; LED bulb failure. | Check power connection; Turn light switch ON; Contact customer support for LED replacement. |
| Poor suction performance | Grease filters are clogged; Carbon filter needs replacement (ductless mode); Obstruction in ductwork (ducted mode); Incorrect installation height. | Clean or replace grease filters; Replace carbon filter (CF-3976); Check ductwork for blockages; Ensure proper installation height above cooktop. |
| Excessive noise | Loose parts; Fan blades obstructed; Improper installation; Motor issue. | Check for and tighten any loose screws; Clear any obstructions from fan blades; Re-check installation; Contact customer support. |
9. Warranty and Customer Support
For warranty information or technical assistance, please refer to the warranty card included with your product or contact SNDOAS customer support directly. Keep your purchase receipt as proof of purchase for warranty claims.
SNDOAS Customer Service:
- Visit the SNDOAS Store on Amazon
- Refer to the contact information provided in your warranty documentation.
