Weller WES51 User Manual

WARNING: This product, when used for soldering and similar applications, produces chemicals known to the State of
California to cause cancer and birth defects or other reproductive harm.
1
MODEL WES51 ELECTRONIC SOLDERING STATION
DESCRIPTION
The WES51 Soldering Station is one in a series of products, which have been developed for industrial manufacturing as
well as for the rework and repair sector. The microprocessor control allows for simple and easy operation. The digital
electronic control system offers excellent control performance for various soldering jobs.
A grounded soldering iron tip, zero power switching and anti-static design of the station and tool allows the WES51
Soldering System to meet the high quality standards established by Weller
®
. The station features external tip temperature
offset and the ability to lock the tip temperature setting using the PW50 Probe supplied. The station will automatically
enter a sleep mode and shut off power to the tool and indicator LED after 99 minutes of inactivity.
Tip temperature is adjustable in the range of 350°F to 850°F (177°C to 454°C), with the front panel temperature control
knob. The LED power indicator will be Green for normal operation or Red, if the temperature is Locked. The LED for
the WES51 will also indicate the operation of the station by the following sequence: Indicator LED full On, indicates that
the station is ramping up to temperature (this can be indicated in either the Green  Unlocked mode or the Red 
Locked mode). Indicator LED full Off or flashing steadily, indicates that the station has reached the Set Point (this also
can be indicated in either the Green  Unlocked mode or the Red  Locked mode). This soldering station is UL/CUL
listed and meets all applicable standards for the CE mark.
OPERATING INSTRUCTIONS
Unpack unit carefully. Place spring and funnel in slot in top of tool stand. Dampen the sponge, distilled or de-ionized water
is preferred. Insert tool in holder and connect tool plug to receptacle on power unit; rotate plug housing Clockwise (CW) to
lock plug into receptacle. Insert line cord plug into properly grounded AC receptacle and turn station On. Set
temperature control knob to desired tip temperature. Wait 30 seconds. Remove tool from holder and tin tip with solder. Unit
is ready for use once the LED begins to flash, indicating that it has reached the operating temperature (indicated in either
the Green or Red mode).
Always use the lowest temperature that will handle the load that you are soldering. The Weller
®
electronic control provides
maximum power to the heated load even when set to the lowest temperature; therefore, there is no need to use high
temperatures to handle heavy soldering loads. By using lower temperatures and properly selecting tip styles, sensitive
components will be protected from heat damage.
WARNING: Do not remove ground prong from line cord plug. Removal may cause tip temperature control to be erratic.
AVAILABLE MODELS AND HAND PIECES
PRODUCT DESCRIPTION
WES51 Power unit, 120V 60Hz, °F dial markings, PES51 tool and tool stand
WES51DUK Power unit, 230V 50/60 Hz, °C dial markings, PES51 tool and tool stand
PES51 50 watt Soldering Tool w/ETA Tip

Weller WES51 Specifications

General

Type	Soldering Station
Temperature Range	350°F to 850°F (177°C to 454°C)
Power	50 Watts
Voltage	120V
Control	Analog
ESD Safe	Yes
Temperature Stability	±10°F (±6°C)
Warranty	1 year
Tip Compatibility	Weller ET Series

Summary

Description of the WES51 Soldering Station

Product Overview and Purpose

Details the WES51 as a microprocessor-controlled station for industrial manufacturing and repair.

Key Features and Design

Highlights features like ESD design, tip temperature offset, lockout, sleep mode, and LED indicators.

Operating Instructions for WES51

Setup and Initial Usage Steps

Guide for unpacking, connecting the tool, and preparing for soldering.

Temperature Setting and Component Protection

Advice on using the lowest effective temperature and selecting tip styles.

Ground Prong Safety Warning

Warning against removing the ground prong to prevent erratic temperature control.

Available Models and Hand Pieces

Product Lineup

Lists the WES51, WES51DUK, and PES51 models with their basic descriptions.

California Health and Environmental Warning

Chemical Exposure Notice

Warning about chemicals produced during soldering that may cause cancer or birth defects.

Specifications and Standards

Station Specifications

Details on power input, voltage, size, temperature control range, stability, and accuracy.

Pencil Specifications

Details on wattage, tool material, heater type, tip, sensor, and handle design.

Compliance and Standards

Lists UL/CUL listing, ESD compliance, and adherence to various military standards.

Lockout Feature Activation

Enabling and Disabling Temperature Lock

Procedure to lock or unlock the tip temperature setting using the Lockout Pencil.

Lockout Mode Operation Note

Clarification on temperature adjustment behavior after disabling the lockout feature.

Tip Temperature Offset and Reset Procedures

Tip Temperature Offset Calibration

Steps to adjust and calibrate the tip temperature offset using a test kit.

Resetting Station to Factory Defaults

Procedure to reset the station's settings to the nominal factory configuration.

Auto Off Feature and Troubleshooting Guide

Automatic Shutoff Functionality

Description of the auto-off feature which shuts power to the tool after inactivity.

General Troubleshooting Warnings

Safety warnings regarding AC line voltage and access to internal parts.

Troubleshooting: Tool Not Heating

Steps to diagnose and resolve issues when the soldering tool fails to heat.

Troubleshooting: Tool Overheating

Steps to diagnose and resolve issues when the soldering tool overheats.

Troubleshooting: Tip Temperature Errors

Guidance on correct methods and potential errors during tip temperature testing.

PES51 Soldering Tool Product Description

PES51 Pencil Design and Construction

Details on the PES51 pencil's Nichrome heating element, ESD plastic, and interchangeable tips.

PES51 Soldering Tool Troubleshooting

Safety Precautions for Repair

Caution to disconnect power before repairs and note on ground pin's effect on control.

Troubleshooting: Tool Does Not Heat

Diagnostic steps for a PES51 tool that fails to heat, including resistance checks.

Troubleshooting: High Voltage on Tip

Steps to diagnose and resolve issues related to high voltage on the soldering tip.

Soldering Tip Usage and Care

General Tip Maintenance

Guidelines for keeping tips tinned, using appropriate fluxes, and cleaning.

Tip Cleaning and Wettability

Methods for cleaning unwettable tips and warnings against abrasive materials.

Tip Storage and Material Usage

Advice on storing tips with excess solder and avoiding anti-seize materials.

Replacement Parts and Accessories

List of Replacement Parts

Identifies key replacement parts for the WES51 station and PES51 iron.

Selection of Soldering Tips

Details various Weller soldering tip types, their sizes (TIP), and reach.