<html><body>
<DIV>This posting is a response to a posting 3 years ago by DPRG member, Brian Merritt.</DIV>
<DIV>I have been repairing Weller soldering stations since 1975, with the 40 year old TCP models (based on Carl Weller's original patents) my favorite.</DIV>
<DIV> </DIV>
<DIV>This is an informational post for owners of the Weller WCC100 soldering station.<BR>Some DPRG builders have this soldering station for their electronics building, from earlier references or recommendations.<BR><BR>This is the BLUE colored station that was sold by Weller until 1999, when it was discontinued<BR><BR>The Weller WLC100, which is an ORANGE colored station, is totally DIFFERENT as far as initernal electronics and the soldering iron tips that it uses.<BR>=============== <BR>The Weller WCC100 is a temperature controlled soldering station that Weller <BR>sold in 1990s, until it was discontinued by Weller in 1999. <BR>I am collecting pertinent documentation for this Weller station (including the <BR>Tech Sheet) that will eventually be available electronically (likely through <BR>BAMA).<BR>This WCC100 station uses the Weller “ET” series soldering tips, which are used on a <BR>number of current Weller soldering stations. The WES51 soldering station replaced
the WCC100.<BR><BR>The WCC100 soldering station is a line voltage ( 120 VAC) station.<BR>It has no isolation transformer and the control board is connected directly to <BR>line voltage (no fuse, surge protection or safety capacitor). The control <BR>board monitors the thermocouple (temperature sensor) and 120 VAC heater.<BR><BR>Parts numbers for Weller WCC100 solder station<BR><BR>WCC101 – Replacement Iron w/ETA tip<BR>WCC102 – Replacement Heater (120 V)<BR>WCC103 – Temperature Sensor w/Spring<BR>WCC104 – Sponge <BR>WCC105 – Spring and Funnel Assembly<BR>WCC106 – Control Board<BR>WCC108 - Weller Barrel Nut<BR>SW120 – Switch (Carling LRA series illuminated rocker)<BR>ET series tips - widely available and used in Weller WES51, "EC" and Silver <BR>Series stations<BR>====<BR><BR>WCC102 heater has a resistance of about 348 to 350 ohms at room temperature (27 C)<BR><BR>WCC103 temperature sensor has a resistance of about 1 to 2 ohms at room <BR><FONT face="Times New Roman, Times, s
erif">temperature (27 C)</FONT></DIV>
<DIV><FONT face="Courier New, Courier, mono"><FONT face="Times New Roman, Times, serif">The Weller WCC103 temperature sensor is actually an iron-constantan thermocouple (likely Type J).</FONT></FONT></DIV>
<DIV>Weller used Type K thermocouples for is "EC" series soldering stations.</DIV>
<DIV><FONT face="Times New Roman, Times, serif">Sensitivity believed to be about 50 µV/°C<BR>The relationship between temperature and voltage produced is NON-Linear.<BR><BR>When replacing the WCC103 sensor the leads MUST be correctly installed<BR>OR the soldering iron stays on continuously and eventually overheats.<BR>The Iron (magnetic) lead connects to the RED wire.</FONT></DIV>
<DIV><FONT face="Times New Roman, Times, serif"><TT>The Constantan (copper-nickel alloy/non-magnetic) lead connects to the </TT><TT>YELLOW wire.</TT></FONT></DIV>
<DIV><FONT face="Times New Roman, Times, serif"><TT></TT></FONT> </DIV>
<DIV>
<DIV><FONT face="Times New Roman, Times, serif">What is a thermocouple sensor?<BR>A thermocouple is a sensor for measuring temperature. It consists of two<BR>dissimilar metals, joined together at one end. When the junction of the two<BR>metals is heated or cooled a voltage is produced that can be correlated back<BR>to the temperature.<BR></FONT><A href="http://www.omega.com/temperature/Z/pdf/z021-032.pdf" rel=nofollow><FONT face="Times New Roman, Times, serif">http://www.omega.com/temperature/Z/pdf/z021-032.pdf</FONT></A></DIV></DIV>
<DIV><BR><FONT face="Times New Roman, Times, serif">I acquired a WCC100 soldering station, via eBay, that was non-functional in <BR></FONT>December 2007. <BR>The temperature sensor (WCC103) had failed (open - infinite resistance) in this <BR>station’s iron. Some parts are becoming more difficult to obtain for this specific station, since Weller discontinued it over 8 years ago. This station now works as new - today!</DIV>
<DIV><BR>IF you have a dead WCC100 station, now is the time to get it repaired, unless <BR>you are scrapping it (I will accept these donations).<BR><BR>These Distributors have Weller WCC100 parts “in stock”, as of December 2007<BR>==<BR>Allied Electronics <BR><A href="http://www.alliedelec.com/default.asp" rel=nofollow>http://www.alliedelec.com/default.asp</A><BR><BR>WCC103 Temperature Sensor (115 units in stock)<BR>Allied part number: 984-2267, price: $ 7.30<BR>==</DIV>
<DIV>HBF Electronics (Philadelphia, PA)</DIV>
<DIV><FONT face="Times New Roman, Times, serif">800-426-4230 (<I>Orders Only</I>)</FONT></DIV>
<DIV><A href="http://www.hbfelectronics.com/index.php?action=disp_item&item_id=308235">http://www.hbfelectronics.com/index.php?action=disp_item&item_id=308235</A></DIV>
<DIV> </DIV>
<DIV>WCC108 - Weller Barrell Nut - $ 5.15</DIV>
<DIV> ==<BR>Santa Cruz Electronics (California)<BR><A href="http://www.santacruzelectronics.com/forms/Query.cfm?q_class=TOOLS%20" rel=nofollow>http://www.santacruzelectronics.com/forms/Query.cfm?q_class=TOOLS%20</A><BR><BR>WCC102 – Replacement Heater (120 V) - $ 21.34<BR>WCC104 – Replacement Sponge - $ 1.50<BR>WCC106 – Control Board - $ 5.74<BR>WCC108 - Weller Barrel Nut - $ 7.52<BR>==<BR>GC Electronics (available at any GC Electronics reseller or retailer)<BR>SW120 - Replacement Illuminated Rocker switch <BR>GC Electronics part number 35-3740 - $ 3.00<BR><BR>Carling Curvette LRA series - LRA211C.<BR>LRA211: 125V Neon Lamp; 16A 125VAC; .250 QC Tabs; <BR>OFF-NONE-ON (SPST); Red Transparent, Black bezel.</DIV>
<DIV>==</DIV>
<DIV>Greg Beat</DIV>
<DIV>w9gb</DIV>
<DIV> </DIV></body></html>