Weller DS800 User Manual

MODEL DS800 ELECTRONIC DESOLDERING STATION

PRODUCT DESCRIPTION

The DS800 is a fully electronic desoldering station with
electrostatic dissipative (ESD) construction and utilizes a
high precision electronic system to control desoldering tip
temperatures. A precision platinum sensor is used in the
desoldering tool to measure temperature. Tools may be
unplugged and replaced without affecting the calibrated
accuracy of the station. Temperature control and dynamic
response to load are fast and noise free. Zero crossing or
optically isolated electronic circuitry is used to control the
pump and other functions so that no voltage transients are
generated to endanger sensitive, high reliability electronic
circuitry. Temperature control is indicated by the flashing LED
which shows when the heating element is on. A calibrated dial
is used to set tip temperature. This covers a temperature
range of 350°F to 850°F.

The DS800 uses an internal rotary vane vacuum pump to supply vacuum for desoldering operations. This pump can provide a
high vacuum for desoldering multi-layer boards and other difficult jobs as well as high flow for very good plated through hole
cooling to prevent reattachment of leads in holes after desoldering. It is also very quite when operating. The desoldering
pencil has a convenient index finger push button to control the vacuum pump. The vacuum pump may also be controlled
using an optional foot switch that plugs into a socket located on the rear of the station housing.

The DS800 uses a new DS1203 desoldering pencil that has a high mass desoldering head and high power heating element.
The high mass head holds more heat and can transfer that heat to the joint being desoldered much faster. This allows faster
desoldering without having to use possibly damaging high tip temperatures to get enough heat.

SPECIFICATIONS: DS800 DESOLDERING STATION

DS800 POWER UNIT

1. Power input: 120 Vac, 60 Hz, 150 watts.

2. Power unit output voltage: isolated 24 VAC (full load) 54 watts at 700°F (371°C).

3. Size: 10.5"D x 6.75"W x 4.75"H

4. Line Cord: 2 wire, U.L. approved

5. Desoldering Tip Temperature Control Range: 350°F (177°C) to 850°F (454°C).

6. Control Setting Resolution: ± 10°F (±10°C).

7. Control Accuracy: ± 10°F (±6°C) of setting at idling temperature

8. Ambient Range: 60 °F (15°C) to 110°F (43°C)

9. Vacuum Source: Internal high performance rotary vane pump. 24 inch HG/typical with tiplet blocked.

10. Cord Connectors: 7 pin polarized (desoldering tool), 2 pin polarized (optional foot switch control).

11. The DS800 Electronic Desoldering Station is fully UL approved and meets the following military specifications:
DOD-STD-2000, MIL-S-45743, W-S-570, DOD-STD-1686, AND DOD-HDBK-263.

WARNING: DO NOT REMOVE GROUND PRONG FROM LINE CORD PLUG. REMOVAL OF GROUND

PRONG WILL CAUSE TIP TEMPERATURE CONTROL TO BE ERRATIC.

DS1203 DESOLDERING TOOL (PENCIL TYPE).

1. Wattage  54 watts @ 700°F (371°C).

2. Tiplet Voltage to Ground: 2 mv RMS Leakage @ 60 Hz Max.

3. Tool Weight: 4.8 oz. (136 grams)

4. Tool Material  Thermoplastic handle (ESD material), stainless steel heating element housing, platinum tempera­ ture sensor, nichrome heating element, solid copper head.

5. Thirteen sizes and styles of replaceable tiplets available.

6. Platinum R.T.D. (resistance temperature detector) probe fits deep inside desoldering head.

7. Integrated heating element and desoldering head with plug in design for quick replacement.

8. Heater Type: Fiberglass and ceramic insulated, nichrome, reverse wound for low leakage and magnetic field
cancellation. Encased in 300 series stainless steel. Modular plug in design.

9. Large easily cleaned visible solder reservoir.

10. Lightweight pencil design with forefinger push button for vacuum actuation.

11. Tool cord and vacuum hose  silicone rubber  4 ft.

POWER DESOLDERING METHOD

The recommended desoldering technique for P.C. boards is to heat the soldered connection with the component lead end
inside the tiplet until the solder is visually melted. This should take 1 to 5 seconds depending on the particular connection
being desoldered. The tiplet surface should be held flush with the P.C. board pad during heating and desoldering. Addition of
a small amount of flux core solder will sometimes improve this process. As the solder melts, the tiplet should be moved with
a circular motion.

This movement will cause the component lead to move around in the P.C. board hole. Depress the push button and hold it
depressed while continuing to rotate the tiplet for 1 - 2 seconds. Remove the tiplet from the pad and then release the push
button, The movement of the lead in the hole and subsequent cooling of pad and lead to below solder melt temperature will
prevent the remaining solder on the pad and lead surfaces from solidifying together. This technique is definitely required when
desoldering plated through holes on double or multi-layer P.C. boards.

USING DESOLDERING HEAD FOR HOT AIR HEATING

WARNING: BE SURE TO REMOVE ALL THE SOLDER FROM THE TIPLET, GLASS TUBE, AND CONNECTOR

TUBE BEFORE USING THE TOOL FOR HOT AIR APPLICATIONS. NEVER DIRECT HOT AIR

TOWARD ANY PART OF YOUR BODY OF OTHER PEOPLE.

It is recommended that a separate desoldering head be used for hot air applications to eliminate the need for thorough
cleaning before using, however, the following procedure will insure that no solder is left in the tool.

PROCEDURE FOR CONNECTING THE TOOL FOR HOT AIR USE:

1. Turn the unit on and allow it to heat (3 minutes minimum).

2. With tube connected to vacuum, hold the tool vertical with the tiplet up and actuate the vacuum source ten
seconds.

3. Insert a tip cleaning tool in the tiplet and force it through into the solder collection chamber with vacuum present.

4. Hold the tool vertical and operate the push button for 5 seconds, then switch the unit off and continue to hold the
tool vertical until the tiplet cools at least below solder melting temperature.

5. Remove tiplet and clean end. Remove the glass tube and clean all solder from it. Check delivery tube and remove
solder. Remove the cotton filter. Replace glass tube. Make sure the gaskets are properly seated. Tighten sealing
nut finger tight. Replace tiplet.

6. Connect the rubber tube connected to the vacuum fitting to the air fitting.

7. Turn the unit on and wait 3 minutes for heat up.