Weller D650 - Manual (Page 3)

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SAFETY PRECAUTIONS
The Weller
® D650 Soldering Gun is a very safe tool. It is UL listed and com-
plies with all the relevant safety regulations in the USA. Nevertheless, like all
electrical appliances, it must be handled with proper care. Never forget that the
operating tip of the Industrial Soldering Gun reaches high temperatures.
Follow these safety rules at all times:
1. Keep your soldering gun well away from all flammable material.
2. To avoid burns, always assume that the tip is hot.
3. Be sure the hot metal tip does not come into contact with the electric
power cord.
4. Before making any adjustment - removing or replacing a tip etc. -
make sure the gun is unplugged and cool.
5. Release the trigger whenever the tip is not in contact with work.
NEVER tape back the trigger.
6. Do not hold work in your hand if you can possibly avoid it. Us a vise,
clamp or pliers.
7. Do not dip the tool into any liquid.
8. Many materials give off unpleasant or possibly toxic fumes when
heated - so ALWAYS work in a well ventilated room.
9. Clean the tip by wiping it, when hot, across a damp soldering tool
sponge - placed on a non-flammable surface, NOT held in the hand.
Immediately re-tin the tip with solder after wiping it on a damp sponge.
This prevents the tip from oxidizing and provides a better means of
heat transfer. (See directions below on how to re-tin tips).
10. After use, disconnect the soldering gun, allow the tip to cool
completely, and store the tool in a safe place (out of reach from
children).
11. Always wear safety goggles to prevent hot materials from entering
eyes.
12. Never attempt to use, or even plug in the gun if the power cord or
plastic housing is damaged in any way.
13. When handling the gun, always grip the gun by the handle. Do not
carry the unit by the power cord.
14. Your D650 is equipped with a three prong power plug. Do not remove
the grounding pin. Do not use 2 prong converter plugs.
CARE AND MAINTENANCE
The D650 soldering gun needs very little in the way of care and maintenance to
keep it in first class condition. Occasionally, the soldering tip needs re-tinning.
Also, other tips can be used for different applications.
RE-TINNING TIPS
If the solder doesn’t cling to the work tip and instead of flowing smoothly, rolls
off in small globules, the tip probably needs re-tinning. The following steps
explain how to re-tin a tip.
1. While the tip is cool, scrape the wettable area of the tip with very fine
sandpaper or steel wool..
2. Depress the trigger and apply solder to the tip until it starts to melt.
3. Keep the tip in contact with the solder.
4. After 3 or 4 seconds, release the trigger, but continue to apply solder until
the tip cools.
5. Once heated, wipe off any excess solder, but re-apply a small amount
before continuing.
6. The tip should now be thoroughly tinned. If it is not, repeat the procedure
starting with Step 1.
REPLACING TIPS:
Weller
® has been producing soldering guns since 1945. During that time there
have been two styles of tip attachments.
STYLE 1
Replacement tips can be purchased with or without threaded studs. If you
purchased tips only (Replacement Part # 7250W), and plan to use the
threaded studs that came with your soldering gun, then follow the entire
procedure below. However, if you purchased a replacement tip complete with
threaded studs (Replacement part # 7250N), then skip Step 3.
1. Ensure tip fastening nuts are placed on new tip as shown.
2. Insert tip ends into side holes approximately 6 mm or 1/4" and pull
forward to start bend.
3. Insert tip ends through barrel opening and into side holes.
4. Carefully start nuts by hand and after threads take hold complete
tightening with a wrench until secure. Important: Snug tip nuts are
necessary to provide a good electrical connection. Loose tip
nuts can cause soldering gun to not heat properly.