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

PTA6

PTB6

PTC6

PTD6

PTH6

PTK6

PTO6
PTP6
PTQ6
PTR6
PTS6

PTX6

700°F

PTA7
PTAA7
PTB7
PTBB7
PTC7
PTCC7
PTD7
PTDD7
PTE7
PTF7
PTH7
PTJ7
PTK7
PTL7
PTM7
PTN7
PTO7
PTP7

PTR7
PTS7

PTX7
PTZ7

800°F

PTA8
PTAA8
PTB8
PTBB8
PTC8
PTCC8
PTD8
PTDD8
PTE8
PTF8
PTH8
PTJ8
PTK8
PTL8
PTM8

PTO8
PTP8
PTQ8
PTR8
PTS8
PTT8

PTZ8

DESCRIPTION

Screwdriver
Single Flat
Screwdriver
Single Flat
Screwdriver
Single Flat
Screwdriver
Single Flat
Screwdriver
Conical Flat
Screwdriver
Screwdriver
Long Screwdriver
Long Screwdriver
Long Screwdriver
Screwdriver
Long Conical
Conical
Single Flat
Narrow Screwdriver
Long Conical
Conical
Bent, Slotted
Bent, Slotted

TIP

1/16"
1/16"
3/32"
3/32"

1/8"

1/8"
3/16"
3/16"

15/64"

1/32"
1/32"
1/64"
3/64"
5/64"

1/8"
1/16"
1/32"
1/32"
1/32"
1/16"
1/64"

.025

1/32"

.020

REACH

5/8"
5/8"
5/8"
5/8"
5/8"
5/8"
3/4"
5/8"
5/8"
5/8"
5/8"

1"
1"
1"
1"

3/4"

1"
5/8"
5/8"
5/8"

1"
5/8"

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.