all DEN-ON SC-7000Z Desoldering Tool Owners
Jerry Howard, CEO
Howard Electronic Instruments,
RE: Tips for your Tips that
won't leave you PLUGGED
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- Place the tip of the Desoldering
Tool over the lead that you will desolder. Make sure
the tip I.D. is large enough for air and solder to
flow around the lead. Three internal sizes (0.8mm,
1.0mm, & 1.5mm) are available.
- VERY IMPORTANT: Insure that solder is in
its complete molten state before pulling the
trigger. If working on multi-layer boards, you must
allow time for solder to reach its molten state
through all layers. If you try the solder removal
process too early on multi-layer boards, you must
then fill the solder hole again to achieve complete
heat transfer through the board.
- Do not try to suction clipped wire leads into
the tip and filter. They will very often plug up
your tip and cause you to have to shut down and
- Keep the end of your desoldering tip tinned,
just as you would your soldering iron tip. It allows
for faster heat transfer and professional
- If little solder balls are constantly rolling
around in your filter, it usually means that you are
pulling the trigger prematurely when desoldering.
Ideally, the solder should stay molten when flowing
through the tip until it plasters itself on the back
of the filter. There-by, building itself into a
mound of solder to allow easy cleaning of the
filter. The little unwanted solder balls eventually
flow around the outside of the filter and plug up
the air flow prematurely.
- After ending a desoldering job, it is a good
idea to switch to hot-air-blow and blow in a can or
jar. This will purge any solder residue that may
remain in the tip.
- Turn the variable temperature control down to
minimum when the Desoldering Tool will be inactive
for a while. This is recommended over turning
it off after every desoldering job.
Excessive heating and cooling of the tip can cause
it to expand into the ceramic heater causing
unnecessary downtime and costly repair.
- Change filters when they get dirty ¼ to ½ of the
way through the fibrous cotton filter. Do not
substitute cotton balls or try to use the filters
too long. You must keep the flux and paste fumes
away from your pump and valves. Clean filters will
prevent premature clogging of the tip and costly
- A tip from one of our Users of the
SC7000Z Desoldering Tool...is
to soak the tips overnight in Acetone or Denatured
Alcohol. This will breakdown any flux trapped in the
solder delivery tube.
- Another tip from one of our users is to drill
out the tips that have become plugged prematurely
(with a 1/16" bit that is about 3 inches long) from
the rear of the tip. Do not try to drill it while
the tip is hot. Then drill from the front with a bit
the size of the bore in your particular tip. Do not
try to force the bit. Drill very carefully
(preferably by hand) and with a little patience, it
will work most of the time.
- Before turning the SC7000Z off, take the largest
wire on the cleaning pin set that will fit the tip
and pass it through the tip. This will purge any
residue from the tip and insure good operation for
the next time. Also ‘tin the tip’ and leave a small
amount of solder on the tip for future operation.
- One Last Tip: If your Company purchased
this tool for you, please treat it as your own. A
Technician is no better than his tools and your
company obviously wants you to be the Very Best.
of trouble call 1-800-394-0984
|Howard Electronic Instruments, Inc.
974 SE Pioneer Rd
El Dorado, KS 67042
Toll Free (USA and
01-316-321-2800 International Phone
316-223-3111 NEW Fax
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