Weller WTCPT User Manual

WTCPT SOLDERING STATION

A transformer powered soldering station, complete with a lightweight, heat insulated, low voltage, temperature controlled soldering iron. The special Weller® “closed loop” method of controlling maximum tip temperature sensitive components. The soldering iron features a stainless steel, plug in heating element construction, a non-burning silicone rubber cord, and a large selection of tips in sizes from 1/64” diameter to 15/64” diameter with a choice of tip temperature of 600°F, 700°F and 800°F. The soldering iron is normally provided with a PTA7 1/16” screwdriver 700°F.

The station features a housing of an impact resistant polycarbonate plastic for durability and protection against accidental damage, a quick disconnect plug for the soldering iron, a lighted on-off switch, and a flexible 3 wire power cord.

The plastic soldering iron holder can be used attached to either side of the transformer case, or separated as shown. The iron holder incorporates a water reservoir with wick to keep the tip wiping sponge moist.

The station housing and hand piece are grounded with a separate conductor that terminates at the third pin on the power cord. The Weller® units are UL listed.

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.

SPECIFICATIONS

POWER UNIT

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

2.Power unit output voltage: isolated 24 VAC @ 1.75 amperes.

3.Size: 4.5” x 5.875” x 3.625”.

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

SOLDERING IRON

1.Wattage: 42 watts.

2.Iron weight: 2 ounces

3.Recovery time (from 100°F drop) with PTA7 tip: 11 seconds.

4.Cord: Silicone rubber, burn resistant, 4 feet.

PRINCIPLE OF OPERATION

When the soldering tip is cold, a ferromagnetic temperature sensor (1) attached to the tip attracts a permanent magnet (2). The magnet movement causes a shorting bar (4) to make contact with a set of isolated electrical contacts (3) thereby supplying power to the heating element through the solder lugs (5). When the tip reaches its idle temperature, the sensor becomes nonmagnetic and no longer attracts the magnet. Then a magnetic bushing (6) attracts the magnet causing the shorting bar to break the circuit. In this manner, power to the heating element is turned on and off automatically.

CAUTION: Tip is grounded, do not solder an energized circuit.

WTCPT 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. Insure correct tip is installed in iron, insert line cord plug into properly grounded AC receptacle and turn unit on. Wait 30 seconds and tin tip with solder. Unit is not ready for use.

All Weller® PT series soldering iron tips are plated with an exclusive process that deposits three protective coatings. The high conductivity copper tips are iron plated, nickel plated, then chromium plated on the non-working surfaces. The working surface is then pre-tinned. The chromium and nickel plating of the tip prevents oxidation of the iron plating which can cause freezing of the tip in the iron. Weller® “temperature sensing” tips have a small ferromagnet sensing element attached to the tip shank. The sensing element is coded with a number to indicate the tip idle temperature in hundreds of degrees F. Thus a simple change of tips is all that is necessary to adapt the tool to an entirely different temperature range. Use only original Weller® soldering tips. The use of non-Weller components may void product warranty if the non-Weller component causes damage to the unit.

SELECTION OF WELLER® PT SERIES TIPS

1.Select a tip configuration with the maximum working surface, thickest cross section, and shortest reach compatible with the size, the accessibility, and the visual restrictions of the solder joint.

2.Select a tip temperature based on the size of the solder joint, the temperature sensitivity of the components, and the production rate required. Please note that tip life is directly related to tip temperature, the lower the tip temperature the longer the tip life.

600°F	700°F	800°F	DESCRIPTION	TIP	REACH
PTA6	PTA7	PTA8	Screwdriver	1/16"	5/8"
	PTAA7	PTAA8	Single Flat	1/16"	5/8"
PTB6	PTB7	PTB8	Screwdriver	3/32"	5/8"
	PTBB7	PTBB8	Single Flat	3/32"	5/8"
PTC6	PTC7	PTC8	Screwdriver	1/8"	5/8"
	PTCC7	PTCC8	Single Flat	1/8"	5/8"
PTD6	PTD7	PTD8	Screwdriver	3/16"	3/4"
	PTDD7	PTDD8	Single Flat	3/16"	5/8"
	PTE7	PTE8	Screwdriver	15/64"	5/8"
	PTF7	PTF8	Conical Flat	1/32"	5/8"
PTH6	PTH7	PTH8	Screwdriver	1/32"	5/8"
	PTJ7	PTJ8	Screwdriver	1/64"	1"
PTK6	PTK7	PTK8	Long Screwdriver	3/64"	1"
	PTL7	PTL8	Long Screwdriver	5/64"	1"
	PTM7	PTM8	Long Screwdriver	1/8"	1"
PTO6	PTN7		Screwdriver	1/16"	3/4"
	PTO7	PTO8	Long Conical	1/32"	1"
PTP6	PTP7	PTP8	Conical	1/32"	5/8"
PTQ6		PTQ8	Single Flat	1/32"	5/8"
PTR6	PTR7	PTR8	Narrow Screwdriver	1/16"	5/8"
PTS6	PTS7	PTS8	Long Conical	1/64"	1"
PTX6		PTT8	Conical	.025	5/8"
	PTX7		Bent, Slotted	1/32"
	PTZ7	PTZ8	Bent, Slotted	.020

CARE OF WELLER® PT SERIES TIPS

1.Keep tinned, wipe only before using.

2.Use rosin or activated rosin fluxes. Acid type flux will greatly reduce tip life.

3.Remove tip and clean with suitable cleaner for flux used. The frequency of cleaning will depend on the type of work and usage. Tips in constant use should be cleaned at least once a week.

4.Don’t try to clean tip with abrasive materials and never file tip, to do so will greatly reduce tip life. If the tip becomes unwettable, it may be cleaned with a soft iron or brass brush using solder flux as a solvent; or the Weller® WPB1 Polishing bar.

5.Don’t remove excess solder from heated tip before sorting. The excess solder will prevent oxidation of the wettable surface when tip is reheated.

6.Don’t use anti-seize compounds on tips, the tips have been plated for oxidation protection.