Weller EC2002M User Manual

MODEL EC2002M ELECTRONIC SOLDERING STATION

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.

OPERATING INSTRUCTIONS

Unpack unit carefully. Place spring and funnel in slot in top of tool stand. Attach tool stand to either side of power unit, if desired.
Fill reservoir with water and wet sponge, distilled water is preferred. Insert tool in holder and connect tool plug to receptacle on
power unit; rotate plug housing to lock plug into receptacle. Insert line cord plug into properly grounded AC receptacle and turn
station on. When the tip temperature reaches 400°F (204°C), remove tool from holder and tin tip with solder. Unit will be ready for
use when it reaches the set point temperature.

The unit display shows a Read mode by default which displays the current temperature of the tip. To switch into the Set mode,
turn the knob slightly and the display will show the current set temperature. Release the knob when you have reached the desired
temperature setting, and after a three second delay the display will switch back into Read mode. When you first turn the unit on,
the display should show 888 for two seconds as a test and then will display the Set temperature for three seconds before
switching into Read mode.

Always use the lowest temperature that will handle the load 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 temperature to handle
heavy soldering loads. By using lower temperatures and properly selecting tip styles, sensitive components will be protected from
heat damage.

While the unit is in the Read mode, the displayed tip temperature may fluctuate. This fluctuation is normal and represents the
control system response to the changing load. Tip selection for a particular job may be optimized by observing the tip temperature
fluctuations during the soldering operation. Normally, the tip should be selected for minimum fluctuation. This will provide the
shortest soldering dwell time; however, some applications may require a fast response with total fluctuation not critical.

A WCM1 Calibration Unit is available that interfaces directly with the EC2002Ms microprocessor through the iron receptacle and
provides the ability to enable a timed setback mode, a temperature lock out feature, a switch to change the display measurement
between °F and °C, digital calibration of the unit to an outside temperature reference, and reset the unit to its original factory
calibration. When the unit enters Setback mode, the unit display will highlight the bottom segment of all three digits. Turn the unit
off and back on to return to normal operation. If the unit is locked to a specific temperature, this temperature may be checked, but
not altered, by turning the knob.

WARNING: Do not remove ground prong from line cord plug. Removal may cause tip temperature to be erratic.

CALIBRATION

The EC1201A, EC1302B and EC1503B soldering tools use high precision platinum RTD temperature sensors; therefore, they are
interchangeable without any re-calibration. Should you wish to custom calibrate your EC2002M unit, this can be easily accomplished
with the use of a WCM1 Calibration Unit and a temperature measurement device like the WA2000.

AVAILABLE MODELS AND HAND PIECES

Product Description

EC2002M-0 Power unit only, 120V 60Hz, °F display
EC2002M-0D Power unit only, 240V 50/60Hz, °C display
EC2002M-1 Power unit, 120V 60Hz, °F display, EC1201A tool with ETA tip
EC2002M-1D Power unit, 240V 50/60Hz, °C display, EC1201A tool with ETA tip
EC2002M-2 Power unit, 120V 60Hz, °F display, EC1302B tool with EPH101 tip
EC2002M-2D Power unit, 240V 50/60Hz, °C display, EC1302B tool with EPH101 tip
EC2002M-3 Power unit, 120V 60Hz, °F display, EC1503B tool with EMA tip

EC2002M-3D Power unit, 240V 50/60Hz, °C display, EC1503B tool with EMA tip
EC1201A 40 Watt soldering tool w/ETA tip
EC1302B 20 Watt soldering tool w/EPH101 tip
EC1503B 42 Watt high capacity soldering tool w/EMA tip

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SPECIFICATIONS

1. Power input: 120VAC ±10%, 60 Hz, (240VAC ±10%, 50/60 Hz). 60 watts

2. Power unit output voltage: isolated 24VAC @ 2.7 amperes.

3. Size: 4.5 x 5.9 x 3.6

4. Line Cord: 3 wire, U.L. recognized

5. Tip temperature control range: 350°F to 850°F (177°C to 454°C).

6. Control setting resolution: 1°F (1°C).

7. Stability: ±10°F (±6°C) per Mil-Std-2000.

8. Absolute accuracy: Average tip temperature is calibrated to ±9°F (±5°C) at idle with no load.

9. Ambient temperature range: 60°F to 110°F (16°C to 44°C).

10. Housing made with Electrostatic Protective Material as required in MIL-B-81705.

11. Housing passes Static Decay test per Federal Test Method Std. No. 101, Method 4046.

®

12. Weller

13. EC2002 units are U.L. listed and meet DOD-STD-2000, MIL-STD-2000, MIL-S-45743, W-S-6536,W-S-570, DOD-STD-

ESD tools comply with DOD-HDBK-263.

1686.

TROUBLESHOOTING GUIDE

WARNING:AC LINE VOLTAGE IS PRESENT INSIDE POWER UNIT EVEN WHEN POWER SWITCH IS OFF.
REFER SERVICE TO QUALIFIED PERSONNEL.

NOTE: Access to internal parts may be gained by removing four rubber feet, four bottom screws and

top case.

TOOL DOES NOT HEAT  DISPLAY NOT LIT

With line cord unplugged and power switch on, check for about 21 ohms at line cord blades for 120VAC units (55 ohms for
240VAC unit).

 Check fuse, located on bottom of case  replace if required. Use slow blow fuse  0.6A for 120VAC (0.3A for 240VAC).
 Check power switch  replace if defective.
 Check line cord  repair or replace if defective.
 Check transformer primary  replace transformer if defective.

With line cord plugged in and power switch on, check for 24VAC ±10% between pins #1 and #4 of tool receptacle.

 Check transformer secondary for 24VAC ±10% - replace transformer if defective.
 Check wiring to printed circuit board assembly  repair or replace if defective.
 Replace printed circuit board assembly.

With line cord plugged in and power switch on, check for 5 VDC ±1 VDC, between pins #3 and #4 of tool receptacle.

 Replace printed circuit board assembly.

TOOL DOES NOT HEAT  DISPLAY LIT

Check wiring from tool receptacle to printed circuit board.

 Repair or replace if defective.

Replace soldering tool with known good tool and recheck.

 Troubleshoot soldering tool using guide in soldering iron tech sheet.

TOOL OVERHEATING

Replace soldering tool with known good tool and recheck.

 Troubleshoot soldering tool using guide in soldering iron tech sheet.

Replace printed circuit board assembly in station.

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