Introduction
The Keystone 50-pint dehumidifier (Model KSTAD504D) is designed to efficiently remove up to 50 pints of moisture from the air per day, suitable for spaces up to 4500 square feet. This unit is ideal for various locations within your home, such as basements, garages, bedrooms, or living rooms, helping to improve air quality and comfort. It features electronic controls with an LED display, a 24-hour timer, a transparent water level indicator, and an automatic shutoff when the water bucket is full. For continuous operation, a direct draining option is available. The unit also includes a removable, easy-to-clean dust filter with a clean-filter alert and an auto-restart function that preserves settings after a power outage. Its portable design with rolling casters allows for easy relocation.
Figure 1: Front view of the Keystone 50-Pint Dehumidifier.
Key Features
- High Capacity Dehumidification: Removes up to 50 pints of moisture per day, covering areas up to 4500 square feet.
- Electronic Controls with LED Display: Provides easy and precise control over humidity levels and settings.
- Multiple Operating Modes: Includes Normal, Turbo, and Auto-Defrost settings for versatile use.
- 24-Hour Timer: Allows for scheduled operation, enhancing energy efficiency.
- Full Bucket Alert & Auto-Shutoff: Prevents overflow by automatically turning off the unit when the water tank is full.
- Continuous Draining Option: Enables direct drainage using a standard garden hose (not included) for uninterrupted operation.
- Removable & Washable Filter: Features an easy-to-clean dust filter with a clean-filter alert for optimal performance.
- Auto-Restart Function: Automatically resumes operation with previous settings after a power interruption.
- Portable Design: Equipped with rolling casters for effortless movement between rooms.
Figure 2: Overview of the dehumidifier's control panel and main features.
Setup and Installation
1. Unpacking and Placement
- Carefully remove the dehumidifier from its packaging.
- Place the unit on a flat, stable surface in the desired location. Ensure there is at least 8 inches of space around the unit for proper air circulation.
- Verify that the water collection bucket is correctly seated in the unit.
2. Power Connection
- Plug the power cord into a grounded electrical outlet.
- The unit is now ready for operation.
3. Continuous Draining Setup (Optional)
For continuous operation without manually emptying the water bucket, you can set up the continuous draining option.
- Locate the continuous drain outlet on the back of the unit.
- Attach a standard garden hose (not included) to the drain outlet. Ensure the connection is secure to prevent leaks.
- Route the hose to a suitable drain location, ensuring the hose is sloped downwards to allow for gravity drainage.
Figure 3: Continuous draining setup and removable water tank.
Operating Instructions
Control Panel Overview
Figure 4: Detailed view of the control panel.
- Power Button: Turns the unit On or Off.
- Mode Button: Cycles through operating modes (Normal, Turbo, Auto-Defrost).
- Timer Buttons (Up/Down Arrows): Sets the 24-hour timer for delayed start or stop.
- Filter Light: Illuminates when the filter needs cleaning.
- Full Light: Illuminates when the water bucket is full, triggering auto-shutoff.
- Cont. (Continuous) Light: Indicates continuous draining mode is active.
- LED Display: Shows current humidity level, timer settings, or error codes.
Basic Operation
- Press the Power button to turn on the dehumidifier.
- Use the Mode button to select your desired operating mode:
- Normal: Standard dehumidification.
- Turbo: High-speed fan for faster moisture removal.
- Auto-Defrost: Automatically defrosts the coils if ice builds up.
- Adjust the desired humidity level using the up/down arrows (often shared with timer buttons, refer to specific manual for exact control). The unit will operate until the set humidity level is reached.
- To set the 24-Hour Timer, press the Timer button and use the up/down arrows to select the desired delay time for turning the unit on or off.
The unit features an Auto-Restart function, which means if power is interrupted, the dehumidifier will automatically restart with the last settings once power is restored.
Maintenance
1. Cleaning the Air Filter
A clean air filter is crucial for efficient operation. The "Clean Filter" alert will illuminate when cleaning is required.
- Turn off the dehumidifier and unplug it from the power outlet.
- Remove the air filter from the back of the unit.
- Wash the filter with warm, soapy water. Rinse thoroughly.
- Allow the filter to air dry completely before reinserting it into the unit.
- Plug in the unit and press the "Filter" button (if available, or power cycle) to reset the filter alert.
2. Emptying and Cleaning the Water Bucket
When the water bucket is full, the "Full" indicator light will illuminate, and the unit will automatically shut off.
- Gently pull out the water bucket from the front of the unit.
- Carefully empty the collected water.
- Clean the bucket periodically with mild detergent and water to prevent mold or mildew growth. Rinse thoroughly.
- Reinsert the dry bucket firmly into the unit until it clicks into place. The "Full" light should turn off, and the unit will resume operation.
Troubleshooting
Before contacting customer support, please refer to the following common issues and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Dehumidifier does not turn on. | No power, power outage, water bucket full or not properly seated. | Check power connection. Ensure water bucket is empty and correctly inserted. Check for power outages. |
| Unit runs but does not dehumidify. | Air filter is dirty, room temperature is too low, humidity setting is too high. | Clean the air filter. Ensure room temperature is above 41°F (5°C). Lower the humidity setting. |
| "Full" indicator light is on, but bucket is not full. | Water bucket not properly seated, float switch malfunction. | Remove and reinsert the water bucket firmly. Check if the float switch is stuck. |
| Unit is noisy. | Unit is not on a level surface, air filter is dirty, internal component issue. | Ensure the unit is on a flat, stable surface. Clean the air filter. If noise persists, contact customer support. |
| Water leaks from the unit. | Water bucket is full, continuous drain hose is loose or clogged, unit is tilted. | Empty the water bucket. Check continuous drain hose connection and ensure it's not clogged or kinked. Place unit on a level surface. |
Specifications
| Attribute | Detail |
|---|---|
| Brand | Keystone |
| Model Name | KSTAD504D |
| Dehumidification Capacity | 50 Pints per Day (DOE 2012 Standard) |
| Coverage Area | Up to 4500 Square Feet |
| Water Tank Capacity | 6 Liters (approx. 1.58 Gallons) |
| Product Dimensions (D x W x H) | 11" x 15" x 23" |
| Item Weight | 40 Pounds |
| Number of Speeds | 3 |
| Operation Modes | Normal, Turbo, Auto-Defrost |
| Special Features | Programmable, 24-Hour Timer, Auto-Shutoff, Auto-Restart, Clean Filter Alert, Full Bucket Alert, Continuous Drain Option |
| Included Components | Dehumidifier, Mesh Filter, Threaded Adaptor with Small Internal Drain Hose, Screw, Manual, Warranty |
| UPC | 192487244548 |
Figure 5: Dehumidification capacity and recommended room sizes.
Warranty and Support
Warranty Information
The Keystone 50-Pint Dehumidifier comes with a 1-year warranty on parts and labor, plus an additional 4 years parts warranty for the sealed system. Please retain your proof of purchase for warranty claims.
Customer Support
For any questions, troubleshooting assistance, or warranty claims, please contact Keystone customer support. Refer to the contact information provided in the original product packaging or visit the official Keystone website for the most up-to-date support details.
Online Resources: You may find additional support, FAQs, and product registration information on the Keystone Store on Amazon.
