SUNLU FilaDryer S4 User Guide

Your Guide to Optimal 3D Printing Filament Drying

About the SUNLU FilaDryer S4

The SUNLU FilaDryer S4 is designed to keep your 3D printing filaments dry and in optimal condition, ensuring better print quality. This user guide provides essential information for setup, operation, and troubleshooting.

Brand: SUNLU

Product Type: 3D Printer Filament Dryer

Certifications: CE, FC, RoHS

Manufactured by: Zhuhai Sunlu Industrial Co., Ltd.

Official Website: www.3dsunlu.com

Contact Information:

Brand Cooperation: branding@sunlu.com
Business Cooperation: sales@sunlu.com
After-sales Service: support@sunlu.com

Address: No. 38, Yongtian Road, Sanxi Science and Innovation Town, Xiangzhou District, Zhuhai City, Guangdong Province, China.

Made in: CHINA

Important Safety Precautions

Keep out of reach of children.
Ensure electrical safety during operation. Do not use near water sources like bathrooms, bathtubs, or washbasins.
Use only the original power cord or a cord meeting safety certification requirements.
Turn off the power and unplug when not in use to prevent accidental fires.
Do not place the dryer on temperature-sensitive objects while drying filaments.
Avoid touching the internal heater or fan to prevent burns.
Keep the upper cover closed during operation to maintain drying efficiency and prevent heat loss.
Do not open the dryer box during operation to ensure the drying effect.
If the product malfunctions, turn off the power, disconnect the power cord, and contact the after-sales support team.

Product Performance Parameters

Project	Parameters
Product Size	460(L)×220(W)×310(H)mm
Internal Size	450(L)×175(W)×207(H)mm
Net Weight (N.W.)	4kg
Working Temperature/Humidity	15 °C-35 °C / ≤90%
Temperature Setting Range	35 °C - 70 °C
Power Input Specifications	AC 110V 60Hz 300W / AC 220V 50Hz 300W
Standby Power	0.25W
Maximum Working Current	3.1A
Filament Diameter	1.75mm / 2.85mm / 3.0mm

Product Components Diagram

The FilaDryer S4 features the following key components:

Filament Outlet: Where the filament exits the dryer.
Control Panel: The interface for operating the device.
Top Cover: Covers the main drying chamber.
Power Input: Port for connecting the power supply.

Setup Instructions

Install Teflon Tube: Insert the provided Teflon tube into the filament outlet as shown in the diagram.
[Diagram Description: Two images showing the Teflon tube being inserted into the filament outlet port on the back of the dryer.]
Load Filament: Open the top cover and place the filament spool(s) inside the dryer box.
[Diagram Description: Image showing the top cover open, with filament spools placed inside. Another image shows a switch being toggled backwards and then pulled up, and a buckle being installed.]
- Toggle the switch backwards first, then pull it up.
- Install the buckle as indicated.
Thread Filament: Guide the filament through the filament output port of the dryer and the Teflon tube.
[Diagram Description: Two methods shown for threading the filament: Method 1 shows filament exiting the dryer and going into the Teflon tube. Method 2 shows a similar setup.]
Connect Power: Connect the power supply to the device and press the power switch to turn it on.
[Diagram Description: Image showing the power cord being plugged into the back of the dryer, and a finger pressing the power button.]

Operation and Control Panel

The control panel allows you to manage the drying process. The display shows current (PV) and set (SV) values for temperature, humidity (RH), mode (MO), and time.

Control Buttons:

[Power Button]: Click to turn on; double-click to turn off.
[SET] Button: Press to select menu options. Pay attention to the flashing status of screen characters.
[▲] Button: Press to increase a value or change the state.
[▼] Button: Press to decrease a value or change the state.

Display Indicators and Functions:

SV flashing: Set the target heating temperature. Use [▲] or [▼] to adjust.
°C flashing: Switch between Celsius (°C) and Fahrenheit (°F) units using [▲] or [▼].
"SUNLU" flashing: Adjust LED running light status (flow, always on, or off) using [▲] or [▼].
"PETG" flashing: Select filament type and use recommended temperature parameters by pressing [▲] or [▼].
"Time: 04:53:52" flashing: Set the drying time (maximum 99 hours) using [▲] or [▼].
"RH" flashing: For MO2 mode, preset the automatic startup humidity value (minimum 30%, maximum 50%) using [▲] or [▼].
"MO" flashing: Switch between MO1 and MO2 modes using [▲] or [▼].

Drying Modes:

MO1 (Time Control Mode): The dryer operates for a set duration and shuts down after the countdown.
MO2 (Humidity Control Mode): After the countdown, if humidity rises to the preset value (e.g., 50%), heating resumes automatically until humidity drops to 25%.

Recommended Drying Temperature Instructions

Material	PLA / PLA+	WOOD	PETG	PVB	ABS / ABS+	HIPS	PVA	ASA	TPU	PMMA	PA/PC
Baking Temp	45-50°C	50-55°C	60-70°C
Time	3-6h	3-6h

Common Troubleshooting

If you encounter issues, consult the table below. If problems persist, contact customer support.

Question	Reason	Troubleshooting Method
Cannot boot	Abnormal power connection	Check if the power cord is securely connected to the socket and if the fuse is intact.
Display is garbled/incomplete	Poor contact or bad display	Shut down and restart. If the issue persists, the display may need replacement.
ER1 (Abnormal temperature detection)	Temperature sensor connection issue	Verify that the temperature sensor connection is secure.
ER2 (Abnormal PTC heating fan)	Fan not rotating or obstructed	Check if the fan is rotating freely or if it is blocked by foreign objects.
ER3 (Abnormal air supply fan)	Fan not rotating or obstructed	Check if the fan is rotating freely or if it is blocked by foreign objects.

After-Sales Service

The product is warranted for one year under normal operation as described in this manual.

Warranty service may not be provided if the machine is damaged due to the use of incorrect power cords or improper operation contrary to the instructions.

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