Zhongdi 4966 - User Manual

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Desoldering Rework Station

Item: 4966/ZD-985

1. Description

ZD-985 is designed for lead free desoldering especially. Its fast heat-up and strong power are

ideal for soldering / desoldering all types of DIP components.

Reasonable structure, single hand operation and strong absorbing power can be easy removal

of the residual solder from the one-sided or two sided of the PCB.

This tool is used in the fields of electronic research, teaching and production, especially in the

repairing and desoldering on the electronic appliances and communications equipments.

1.1 Control Unit

The desoldering gun is controlled automatically by the micro-processor. The digital control

electronics and high-quality sensor and heat exchange system guarantee precise temperature

control at the soldering tip. The highest degree of temperature precision and optimal dynamic

thermal behavior under load conditions is obtained by the quick and accurate recording of the

measured values in a closed control circuit, and this design is especially for the lead-free

production technics.

1.2 Desoldering gun (ZD-552B)

ZD-552B desoldering gun with a power of 80W and a wide spectrum of soldering tips（N5

series）can be used anywhere in the electronics field.

The high power and gun type design make this iron gun suitable for fine desoldering work.

The heating element is made of PTC and the sensor on the desoldering tip can control the

desoldering temperature quickly and accurately.

2. Technical Specification

Code

Voltage supply

89-8512

220-240V~

89-8514

220-240V~ ESD safe

Spare parts:

Code Voltage Power Model NOTE

ZD-552B 24V 80W ZD-552B 7 pins, with sleep function

3. Operating Instruction

3.1 Place the desoldering gun in the holder separately. Then connect the plug to the receptacle

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The ZD-985 is a desoldering rework station designed specifically for lead-free desoldering applications. Its primary function is to efficiently remove solder from various electronic components, particularly DIP components, due to its rapid heat-up and strong power capabilities. The station is suitable for use in electronic research, teaching, and production environments, with a focus on repairing and desoldering electronic appliances and communication equipment.

Function Description:

The core of the ZD-985 is its desoldering gun (model ZD-552B), which is automatically controlled by a micro-processor. This digital control system, combined with a high-quality sensor and heat exchange mechanism, ensures precise temperature control at the soldering tip. The design prioritizes a high degree of temperature precision and optimal dynamic thermal behavior under varying load conditions, achieved through quick and accurate recording of measured values within a closed control circuit. This advanced control system is particularly beneficial for lead-free production techniques, where precise temperature management is crucial. The desoldering gun's reasonable structure and single-hand operation, coupled with its strong absorbing power, facilitate the easy removal of residual solder from both single-sided and two-sided PCBs.

Important Technical Specifications:

Item Number: 4966/ZD-985
Control Unit Voltage Supply: 220-240V~ (available in both standard and ESD safe versions, indicated by codes 89-8512 and 89-8514 respectively).
Desoldering Gun Model: ZD-552B
Desoldering Gun Voltage: 24V
Desoldering Gun Power: 80W
Desoldering Tip Series: N5 series (offers a wide spectrum of soldering tips).
Heating Element: PTC type, with a sensor on the desoldering tip for quick and accurate temperature control.
Temperature Range: Soldering tip can reach up to approximately 400℃ (752°F).
Sleep Mode: Activates after 15 minutes of inactivity, cooling the tip to 200°C.
Desoldering Gun Connection: 7 pins, with sleep function.

Usage Features:

The ZD-985 offers several user-friendly features:

Digital Display and Temperature Setting: The station features a digital display that shows both the actual temperature of the desoldering tip and the set temperature. Users can adjust the set-point in ±1°C increments using "UP" or "DOWN" buttons. Pressing and holding these buttons allows for quicker adjustments. The display automatically reverts to showing the actual temperature once the set-point is reached.
Temperature Unit Switching: A "°C/°F" button allows users to toggle between Celsius and Fahrenheit temperature displays.
Heating Indicator: When the actual tip temperature is below the set-point, "HEAT ON" is displayed, indicating that the desoldering tip is heating up.
Stability Indicator: If there's an absolute offset of more than ±10°C between the actual and set temperatures, "WAIT" is displayed. This indicates that the temperature control system is not yet stable, and users should wait for it to disappear before proceeding.
Error Indicator: An "ERROR" display signifies a potential system malfunction or an incorrect connection of the soldering iron to the control system.
Sleep Mode: To conserve energy and extend tip life, the station enters sleep mode after 15 minutes of inactivity, reducing the tip temperature to 200°C. The station can be restarted by cycling the power switch or by pressing any key (though it will re-enter sleep mode if the gun isn't picked up within two minutes).
Easy Setup: The desoldering gun connects to the holder and then to the control unit via a plug, which is tightened clockwise. Users must ensure the power supply matches the unit's specifications and that the power switch is initially in the "OFF" position. A self-test is performed upon power-on, illuminating all display elements briefly before switching to the set temperature.

Maintenance Features:

Proper maintenance is crucial for the longevity and safe operation of the ZD-985:

Tool Care:
- Use the tools only for soldering or desoldering applications.
- Avoid striking the iron against the workbench or subjecting it to severe shocks.
- Do not file the soldering tip to remove oxide; instead, wipe it on a cleaning sponge.
- Use only accessories and attachments listed in the operation manual to prevent injury.
- Always turn off the power before connecting or disconnecting the soldering iron.
Safety Checks: Before further use, inspect safety devices and any damaged parts for error-free operation. Check moving parts for binding and ensure no parts are damaged. Damaged safety devices or parts must be repaired or replaced by a qualified technician, unless otherwise specified.
Storage: Unused soldering tools should be stored in a dry location, out of reach of children. All unused soldering tools should be switched off.
Electrical Safety: Avoid touching grounded parts of the body (e.g., pipes, radiators) as the grip of the antistatic-designed soldering tool is conductive.
Work Environment: Do not use the soldering tool in moist or wet environments. The soldering iron should be placed in its holder after use.
Safety Regulations: Always observe valid safety regulations at the workplace. The operating instructions and cautions should be read carefully and kept visible near the control system, as non-observance can lead to accidents or injury.

Zhongdi 4966 Specifications

General

Brand	Zhongdi
Model	4966
Category	Power Tool
Language	English

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