Constant Temperature Heating Plate Operation Manual
Product Overview
This heating plate is specially designed for LED chip soldering on aluminum substrate, PCB preheating, chemical experiments, heating & curing and other applications. Operating temperature range: 0~500℃. It is mainly used for preheating, soldering and rework of aluminum-based circuit boards and other scenarios requiring stable temperature-controlled heating. Simple operation and high working efficiency, an ideal helper for your production and processing.
ETOOL, a professional heating plate manufacturer, introduces the operation, setting and maintenance instructions below.
Product Features (Modular Design for Easy Maintenance)
- 1. Original Yudian PID AI digital temperature controller, high precision, safe, simple and clear operation.
- 2. High-quality Solid State Relay (SSR), service life 100 times longer than ordinary contact relays.
- 3. Multiple high-quality stainless steel heating tubes, quick maintenance and low failure rate.
- 4. Work panel made of aluminum alloy with high thermal conductivity for uniform heating.
- 5. Furnace housing fully constructed of SUS304 stainless steel; no paint peeling or rusting under normal working environments.
- 6. Cooling fan and ventilation windows installed in control system to prevent overheating of internal components.

Technical Specifications
Power Supply: 220V, 50Hz; Temp. Control Range: Ambient ~ 350℃; Control Accuracy: ±1~2%℃
Types: Integrated Type (Height:150mm), Split Type (Height:65mm), High Temp Type (Ambient~450℃), Ultra-High Temp Type (Ambient~500℃), Ceramic Heating Plate (Ambient~950℃)
| Model | Heating Plate Size(mm) | Max Power(W) | Net Weight(Kg) |
|---|---|---|---|
| ET-100 | 100×100×20 ±1 | 400 | 3.5 |
| ET-150 | 150×150×20 ±1 | 600 | 4.0 |
| ET-200 | 200×200×20 ±1 | 800 | 4.5 |
| ET-3020 | 300×200×20 ±1 | 1200 | 7 |
| ET-360 | 360×250×20 ±1 | 1500 | 9 |
| ET-400 | 400×300×20 ±1 | 2100 | 12 |
| ET-6040 | 600×400×20 ±1 | 3600 | 28 |
Custom Service: Non-standard sizes available. Lead time: 5-7 working days. Max heating plate dimension: 2000×2000mm, max temperature up to 950℃.
Application Scope
- 1. LED industry: aluminum substrate, LED chip soldering and rework.
- 2. Electronic industry: glue dispensing and encapsulation constant temperature heating.
- 3. Mold factory: mold core preheating.
- 4. General industrial heating: sample baking and drying at constant temperature.
- 5. Laboratory equipment: temperature testing, essential tool for biology, genetics, medical & health, environmental protection, biochemical labs, analytical rooms and teaching research.

Operation Instructions
- 1. Connect power and turn on Power Switch. Green Power Indicator stays on, meaning power supplied.
- 2. Turn on Heating Switch to start operation. Red Heating Indicator steady on: continuous heating; flashing: constant temperature mode with intermittent heating.
- 3. After use, turn off Heating Switch first to stop heating. Green power light remains on as warning: do not touch hot plate. Turn off Power Switch after plate fully cools down (1 hour recommended).

Safety Precautions
- 1. 220VAC power required, use earthed 3-pin socket with leakage protection switch.
- 2. Non-professional personnel shall NOT open casing or modify internal wiring.
- 3. Never touch heating plate directly to avoid burns.
- 4. Cut off power supply if not in use for long time or leaving site.
- 5. This unit is equipped with air cooling fan. Do NOT block side air inlets.
- 6. Unplug power cord before replacing fuse to prevent electric shock hazard.

Temperature Controller Panel Description
| Symbol | Description | Symbol | Description |
|---|---|---|---|
| PV | Measured Value / Mode Display Value | < | Digit Shift Key |
| SV | Set Value / Mode Content Display Value | ∨ | Value Decrease Key |
| OP1 | Output Indicator Light | ∧ | Value Increase Key |
| AU1 | Alarm 1 Indicator Light | Ο | Setting Mode Key (Confirm Key) |
| AU2 | Alarm 2 Indicator Light |
Parameter Setup
1. Long press Ο key to enter parameter menu:
| Code | Description | Range | Factory Default |
|---|---|---|---|
| HIA | High Alarm Limit | 0~999 | 999 |
| LOA | Low Alarm Limit | 0~999 | -199 |
| HdA | Deviation High Alarm | 0~999 | 999 |
| LOC | Parameter Lock Level | 0~255 | 0 (Do not modify) |
2. Set Target Value: Under normal display state, use ∧, ∨, < keys to edit SV set temperature. ∨ decreases value; ∧ increases value. The flashing decimal point marks editable digit. Long press for fast increment/decrement with 2-speed acceleration. Press < to move cursor, then ∧/∨ to modify the flashing digit.
3. AT Auto-tuning Operation: For AI intelligent PID control, perform AT auto-tuning to calculate PID parameters. Hold < key for 2s to bring up AT parameter. Use ∧ to switch OFF to ON, press Ο to confirm and start auto-tuning. “At” flashes on SV window. After 2 oscillation cycles, controller calculates optimal PID automatically and finishes tuning. To abort early: hold < for 2s, set AT from ON to OFF and confirm with Ο.
Note: Tuning parameters vary at different setpoints. Set SV to your commonly used temperature BEFORE AT. Do NOT change SV during auto-tuning. Control performance may improve after running for some time due to built-in learning function.
Warranty & Additional Notes
Warranty Terms:
- 1. 1-year free warranty for whole unit under normal use (6 months for heating tubes). Not applicable for man-made damage.
- 2. Paid lifetime service after warranty expiry.
Important Remarks:
- • Fully insert power cord into rear socket; poor contact may cause arcing and socket burnout.
- • Initial overshoot of 3~5℃ is normal; temperature stabilizes within minutes, which improves surface uniformity.
- • White smoke and odor at first use are normal, caused by residual machining oil evaporating under high temperature. It disappears after several runs.

- • Light cracking sound during heating comes from thermal expansion/contraction of heating tubes, safe for continuous operation.
- • All units pass 24-hour aging test before delivery. Unauthorized modification of internal parameters is prohibited. Our company shall not be liable for equipment damage or personal injury caused by improper manual parameter changes.
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