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  9. PEWA SC7000 User manual

PEWA SC7000 User manual

Thank you for your purchase of the
DIG
SC7000 high-performance desoldering tool as one of your auxilary service
instwments. We hope that the use of our quality product will give you satisfaction for years to come. To get the
maximum performance from
you!
instrument we suggest
that
you
note
the following instructions before operating
the tool. This basic technical Sheet will help you to better understand the features. advantages. and maintenance
necessary to keep your instrument
functioninu
efficiently.
1,
2,
3,
4.
5.
6.
Plug the power cord into an electrical outlet. Then set power switch, located on the bottom
of
handgrip,
to
“ON” position and allow instrument to warm up for a few minutes.
IhlTE:
a) When
the
instrument is operated the first time fumes may develop in the area of the heater holder. This
is normal and is caused by the protective coating burning off of the healing element.
b)
Check the filter cartridge
for
proper position and direction.
Set the temperature control knob to Suit the application. for standard desoldering procedures, it is advisable
to choose a position between
38OC
and
4ODC:
when working on
multilayer
P.C.B
applications the most
satisfactory results will be obtained at temperatures ranging from
42OC
to
45OC.
T
O
remove
the solder around any lead-wire of a given components. simply place the bore of the desoldering
tool
tip
over
the wire-end, insert and at the time the solder around it melts, gently pull the
vacuum
trigger
switch to allow the pump
to
suck the molten compound away.
The removed Solder will gradually accumulate in the filter cartridge and may be wnoved with tweezers,
when the felt in the filter cartridge becomes dirty the suction effect of the system will decrease. it is
recommended that the filter cartridge be changed when between
One-fourth
and one-half of the filter
shows
a build up of impurities.
If the
bore
of the desoldering tip becomes clogged with flux and/or solder and causes a decrease in suction
performance it is necessary then to
cleaf
the channel in a
ha&d
condition. using the cleaning pin set.
Note:
The instrument is delivered with a cleaning pin
set
composed of 3 different pin
diameters
to
be used
accoring
to desoldering tip sizes. Each Size has a long and a
shut
pin. Use the short pin first, then
followed by the
longer
pin.
After a working session, clear the bore
of
any flux and!or solder residuals after that. set the operating mode
switch
to the hot-air-blow position and clear tip completely. Your tool will
now
be ready to proceed with your
next
lob.
The hooking hole may be used to hang the
too,
in a counter weighted position for permanent desoldering
otxration.
1
As you are aware. the unique design of the SC-7000
desoldeling
tool allows for the quick conversion from
SI
removal
fo
HOT-AIR Blower. By using the hot-air blower with the
SMD
accessory kit
(51.78.00)
componenti
easily removed from
PCB’s
and substrates. The change
to
hot-air blower requires:
a)
remove
the desoldering tip and replace with hat-air
Blower
nozzle.
using wench supplied.
b)
Replace the desoldering cartridge with the special hot-air cartridge.
c)
Set the vacuum/hot-air
cotral
to hot-air blower position.
The hot-air flow rate can be adjusted with the switch lever.
$1
Depending on the nature
of
the desoldering work and the
size
of the component. the temperature
control
should be set at the appropriate level.
(440&45OC]
CAUTION:
Take care when using the hot-air blower function. The operator should be aware that the
-AIR” can cause serious burns.
(1)
SMD
Hot-Air Nanle
Hot-Air Cartridge
Pa)
(3b)
,___’
Wire Holder.
PV-1
@aI
Stainless Roll
WS-630
Blade Holder ST-705
For use on
SMD’s
Used lor hot-air desoldering applications
Stainless steel wire holder
Used
10
remove
a
OFP’
or SOP”’
Stainless
steel
blade
holder Used
to
remove
PLCC”
a:
b:
C:
d:
e:
Never attempt
to
wash or rinse a dirty filter in any kind volatile Solvent. as this may decrease the
performa
of the instrument and may
piesent
an explosive hazard.
To avoid damage to heating element (from thermal shock)
never
use waler or any other coolant on
hea
section or tip.
Excessive
shock
and vibration
to
the instrument itself may also damage the heating element.
Al&r
extended use, flux may accumulated on the valve sheet, gasket and/or the pro&ctive Silicon
tubin!
the vacuum pump lowering its suction performance. Periodic maintenance and cleaning of these part:
advisable, any flawed or deformed parts should be replaced.
The desoldering looI-stad
(STEOO)
should be used in
conjunctlon
with your instrument. This particular
st,
has been designed to maximize the performance and life of your SC7000 desoldering tool.
2
Filter cariridae
re!Macement
When
soldermat&
has accumulated in the filter cartridge after a long period of operation. remove it with
tweezers. When between
one-fourth
and one-half of the felt portion has been discolored by dirt, replace the
filter cartridge and filter with new ones.
NOTE: When replacing
the
filter
cartridge, be
weto
clean
adiacentareato
prevent
air
leakage.
Removal
and/or replacement
QrocedUre
Puilthefilterreleasing/fixing knobtowardsthe handgiiQoflhefDol(releaseposition)and hnld.PuShthecartridgeassembly
in direction
Ofmark”Vand
remove it, Place the
nev,cartridgewiththe
sign ‘FRONT’upwards into locationand bring back
file
reIeasing/fixing
knob
10
the
‘FIX’
position.
Make
sure
that the knob is
properly
locked after the replacement operation.
Desoldering
Tip and
SMD
Hot Air Nozzle Replacement
To remove the
desjdering
tip
01
SMD
hot
air
nozzle,
uil~crew them
countercIockv&e
using the
accessory
wrench
an the
nut-cut face, To mount the tip or nozzle. proceed in wer?.e, Tightening clockwise until
snug.
Do
not
overtighten,
Sheet-Valve,
Gasket or Diaphragm
Cleaning and/or Replacement
After long operation. the
suction
pump parts, such as she&valve. gasket and/or diaphragm may need
CIeaninQ
01
Pump Unit
Gisassembly
(19)
Gasket
(221
Valve-Sheet
(26,
Diaphragm
Fig.
3
Suction Pump
Disassembly
lor
Parts Cleaning and/or
Replacemeld
Loosen
and remove three
SCREWS
on the body housing.
Also,
renwe
the fixing screw located in the base of the
heater holder.Open the side of the body housing carrying
the sticker. Take the pump unit out of the body.
For
gasket (19) and valve-sheet
,221
cleaning
and/or
replacement1 remove attaching screws (14) and
(20).
respectively. Far diaphragm (26) cleaning and/or
replacement. remove the attaching screws
(201
and
(24),
4. Healer Replacement
Fiistofa~I,removethedesolder~ngtiporSMDhotairnoiile~Openthebodyhousingusingthesameproceduresasdescribed
on paragraph
3,
Disconnect the
heatei
ciwit
plugs from the
PCB
137A),
Take the heater out al the body housing
Aner replacement
of
the heater.
adju?.t
the
variable
resi$tol according
to
VR
Position
B
White
C
cariridges: and 5 filter-B
34
About
301~
lOO-120VAG
Abo"t150,or
ZZO-240VAC
I",
Isihefuse
resistoron
the
PCB
378 open?
Does pipe setter
(F)
have
flaws
01
is
it
deformed?
Checkvalve-sheet,gasket,diaphragm,
etc.
.STAND
ST-800
.FlLTER
CATRIDGESET
CARTRIOGE:Spcs,FILTER:
5pcs
."PTl"N

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