puhui T-960W LED SMT Reflow Oven Instruction Manual

T-960W LED SMT Reflow Oven
Instruction Manual

LED SMT Reflow Oven T-960W
LED SMT Reflow Oven Model: T-960W]
http://www.tech168.cn 

Features:

Taian Puhui Electric Technology Co., Ltd
http://www.tech168.cn

1. This machine selects IR and hot air heating technology controlling, equipped with a special design wind wheel, speed stability, and uniform temperature, suit for uninterrupted soldering of the LED and BGA components.
2. This machine is equipped with the crawler-type and five temperature zone heating systems, and each temperature zone uses independent PID controlling and up-down heating type, which can make the inside temperature more accurate and well-proportioned, just take about 20 minutes can let it heat up to the working temperature from the room temperature.
3. Intelligent temperature wave heating type, oversized capacity wave selection, have eight temperature waves can satisfy various welding technological requirements.
4. Use programmable technology, preset the temperature wave memory storage function, and can complete the whole welding process automatically according to your presetting wave.
5. Adopt the thermocouple temperature measurement and add the compensation circuit, make the temperature measurement more accurate, and the wave more perfect.
6. Use PID intelligent temperature control technology; to make the temperature control more accurate. Adopt the imported large current solid-state relay non-contact output can effectively avoid the IC or circuit board damage due to the rapid or uninterrupted warming up, making the whole welding process more scientific safety.
7. The transmission system adopts an imported frequency conversion motor, PID closed-loop speed, equip with all the import 1:150 turbine speed reducer, smooth
8. Adopt independent wheel structure and special stainless steel strut, durable wear-resisting runs smoothly, speed precision can reach ±10mm/min.
9. Independent cooling zone, to ensure the PCB board of low temperature when required.
10. Friendly human-machine operation interface, perfect LCD display, no need to connect with the PC, can watch the whole repairing process very clearly.
11. Ergonomic design, practical, and easily operated. Good build quality but at the same time, lightweight and a small footprint allow the T-960W to be easily bench positioned, transported, or stored.

Technical parameters

Main parts

Description of the main parts

1. Welding table main body

2. Control cabinet Panel
380V lines connection L1L2L3- FireWire; N1N2N3-Zero wire; PE- Earth wire all lines must be more than 4mm2
220V lines connection

L1, L2, L3 parallel, then connect with firewire;
N1, N2, N3 parallel, then connect with zero wire, PE connect with earth wire
4. Status indicator lamp
When the status indicator lamp shows green, it indicates that the program is running status; when the status indicator lamp shows red, it indicates that the program is setting status. (tips: if the lamp changes from green to red when the machine is in running status, press F5 into the running status again).

Operating Instructions

1. Enter into the setting interface when starts the machine. Press the F2 button to select the wave, press F1 to select the point, press F3/F4 to set the corresponding temperature zone up and down, and press F5 to go to the heating interface.
2. Five red switches separately control the upper 1/down 1/upper 2/upper 3/down 2 temperature zones.
3. When the temperature gets to balance, open the Motor switch and adjust the conveyor belt speed.
4. Press F2 stop heating and enter into the setting interface.
5. Each temperature wave purposes as follows: Waves one and two: use the same with soldering the less lead paste, like 85Sn/15Pb 70Sn/30Pb Waves three and four: use the same with soldering the more lead paste, like 63Sn/37Pb 60Sn/40Pb. Waves five and six: use the same with soldering high-melting-point lead-free paste, like Sn/Ag3.5Sn/Cu.75 Sn/Ag4.0/Cu.5 Sn95.5/Ag3.8/Cu0.7 Waves seven and eight: use the same with soldering lead-free solder in melting point, like Sn/Ag2.5/Cu.8/Sb.5Sn/Bi3.0/Ag3.0

Attention:

1. According to the chips size and welding technological requirements, select the proper wave.
2. Heating temperature regions distribution of upper three areas, and the lower layer 2 areas, corresponding heating waves of the first section/third section/section 4 of the first/second section/each.
3. There are a lot of kinds of solder paste, and every company chooses is also not identical. For these reasons, we design this product can set eight waves, each wave has five sections, and each section of the heating time and temperature all can alter. You can reset the heating waves according to the solder required heating temperature and time.

Foundation for a wave set

1. The reflow soldering theory and the temperature wave When the PCB board goes into the heat-up area (dry area), the solvent and gas in the solder paste will evaporate. At the same time, the flux can wet the pad and the component tip and foot. The solder paste melts, caves in, and covers the pad, leading to the pad and component pins insulating the oxygen. PCB board goes into the heat preservation area. PCB board and components get full preheating. In case of damaging the PCB and components when it goes into the welding area and the temperature heats up quickly. When PCB board goes into the welding area, the temperature heats up and the solder paste melts. When the PCB board goes into the cooling area, the liquid solder pastes the soldering points to solidify. The reflow process is finished. The temperature is the key to welding quality. The actual and the setting temperature warming slope and the peak temperature should be accordant. Before the temperature reaches 160, please control the heat-up speed in about 1/S. If heated up too quickly, the PCB board and the components will be damaged, and the PCB board may be out of shape. On the other side, the flux volatilizes too fast. And it is easy to make soldering tin balls. Set the peak temperature 20-40 higher than the solder paste melting point. Set the reflow time 10S-60S. If the peak temperature is low or the reflow time is short, it will affect the welding quality, and serious is causing the solder paste not to melt. If the peak temperature is high or the reflow time is long, the metal power will be oxidized and affect the welding quality and serious is causing the component and PCB board damaged.
2. The set of the temperature wave Set the wave according to the solder paste and the above foundation. Different solder paste, choose and set different waves. In addition, the temperature wave has related to the PCB, the density, and the size of the components. Generally, lead-free welding temperature should be higher 40 than the melting point.

Temperature Area Set

1. Set the temperature and belt speed to the initial value(usually the manufacturer supply when adjust)
2. The cooling oven should be preheated for 15-20 minutes.
3. When the temperature is stable, let the PCB board pass the heat reflow system. Under this set, the solder paste can reach the reflow critical point. If there is no flow, operate as step 4 .If the reflow is too fast, please keep correct report ion to increase or reduce the temperature. And let the PCB pass the system a gain until reaches the reflow critical point. Then turn to step 4, only when there is reflow that is good.
4. If there is no reflow, please reduce the belt speed. For example, now the belt speed is 500mm/min, please adjust it to about 460mm/min. Usually, reducing the speed by 10% can increase the temperature by about 30F. Another way is that, do not adjust the speed, and increase the temperature properly. The increase range standard is the temperature wave. Adjust the temperature on the basic difference between PCB actual and standard temperature. The adjusted range is about 5. When adjusting the temperature, it can not exceed the PCB and component bearing capacity.
5. Let the PCB board pass the reflow system in the new speed or new set temperature. If there is no reflow, back to step 4 to adjust again. Or carry out step 6 for temperature fine-turning.
6. The heat temperature wave is adjustable according to the PCB board. You can adjust the transmission belt speed to adjust the temperature. Reducing the belt spend can increase the product heat temperature. On the contrary, you can reduce the product heat temperature.
7. Attention: if there is components on the PCB, the PCB passes the reflow and it reflows not very completely, suggest you adjust then reflow again. Usually, this cannot damage the components.
8. From low to high when the set temperature. If the heat range is over the reflow temperature is too high, should increase the transmission speed or reduce the set temperature. The detailed operation is the opposite to step 4.

Equipment Installation

1. Set up the field.
   1.1. Please do the work in a clean environment condition.
   1.2. Do not put the machine near the electromagnetism interfering resource.
   1.3. Do not put the oven exits and entrances face toward the fan and the window.

2. Power supply Please use a five-wire system380V. Ensure the machine contacts the earth well and requested professional electrician operation.

3. Adjust the reflow oven height.
   By adjusting the machine leg to adjust the height. The way is to follow: use an industrial or alcohol gradient to measure. Then adjust the machine leg to adjust the dryer on all sides till it is completely horizontal.

4. Caution:
   4.1. The working environment should be clean. So the welder quality is good.
   4.2. Do not use and store the machine out of the door, in high temperature, and humid conditions.
   4.3. During operation take care of the high temperature and avoid scalding.
   4.4. When overhauling the machine, please cut off the power supply to avoid electric shock or causing a short circuit.
   4.5. If moving the machine after overhaul, must check all the parts, especially the net-belt position. Cannot make it a lock or fall off.
   4.6. Ensure the machine is stable, not lean or unstable. Adjust the leg under the machine to keep the transmission horizontal. Or the PCB will shift in the transmit process.
   4.7. Do not put too big and big absorbed heat components into the oven to avoid damaging the net and affecting the temperature.
   4.8. Put lubricating oil into the transmission chain every 7 days.
   4.9. Do not put inflammable and explosive dangerous goods near the reflow oven.
   4.10. Do not reach your hands into the reflow oven when the machine is in normal working condition.

Daily Maintenance

1. Keep the electrical control cabinet clean.
2. Check the fan shaft sleeve is in good condition.
3. Check if the fan and the electro-motor have abnormal sounds.
4. Be sure the fan does work flexibly.
5. Check the air hole if there are abnormal materials.
6. Check the transmission net belt is in good condition.
7. Check if the electrical chest and electrical equipment have abnormal sounds.
8. Check the transmission part if it is in good condition and has an abnormal sound.
9. Before turning on the machine, please check the working voltage if it is at the safe voltage and if it is stable. Ensure all the parts can work safely and normally. At the same time, when turning on the machine, check the parameters are the same as the last time turn off. When turning off the machine, do not let the transmission belt in the hot area, please turn off the temperature, and when cool down well and stop the transmission belt.
10. Lubricate the driving rolls. Put lubricating oil every two months.
11. The motor works in a high temperature for a long time, please put lubricating oil twice a week or more, ensuring the motor can work normally.
12. Clean the residual goods on the fan blade and motor timely. Or the circuit ages will lead to a short circuit and damage the fan.
13. Be sure the machine contacts the earth when using a five-wire system.

Statement: These images and screenshots in this product manual may be very slightly different from the actual purchased product.

http://www.tech168.cn

References

• 普惠电气 - 回流焊机厂家

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