Pace SX-70 SODR-X-TRACTOR Instruction Manual

SX-70Sodr-X-TractorHandpiece
Operation&MaintenanceInstructions
SX-70

SX-70
2
PACE Incorporated retains the right to make changes to specifications contained
herein at any time, without notice.
Contact your local authorized PACE Distributor or PACE Incorporated to obtain the
latest specifications.
The following are registered trademarks and/or servicemarks of PACE Incorporated,
Laurel Maryland U.S.A. and may only be used to identify genuine PACE products
or services:
Arm-Evac, Cir-Kit, ConducTweez, CRAFT, Flo-D-Sodr, Heat Wave,
HotSpot, LapFlo, MBT, Micro Portable, MicroChine, MiniChine,
Mini-Wave, PACE, Pacenter, Pik-Tip, PETS, Prep-Set, ResisTweez,
SensaTemp, Snap-Vac, Sodr-Pen, Sodr-X-Tractor, ST, StripTweez,
Thermo-Drive, ThermoFlo, ThermoJet, ThermoPart, ThermoPik,
ThermoTweez.
The following are trademarks and/or servicemarks of PACE Incorporated, Laurel
Maryland U.S.A. and may only be used to identify genuine PACE products or
services:
Sodrtek, Toolnet.
Since 1958, PACE Incorporated has provided
advanced technology training in all aspects of hand
soldering, rework and repair.
For any questions regarding this Operation & Maintenance Manual, contact your
local authorized PACE distributor or contact PACE directly at the appropriate
address listed below.
PACE Inc. 9893 Brewers Court, Laurel, Maryland 20723-1990
Tel. [phone] (toll-free), [phone]
FAX [phone]
PACE Europe Ltd. Sherbourne House Sherbourne Drive Tilbrook
Milton Keynes Buckinghamshire England MK7 8HX
Tel. [phone] FAX [phone]
© 1999 PACE Incorporated, Laurel MD. All rights reserved. Printed in the U.S.A.

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SX-70
Sodr-X-TractorHandpiece
PartNumber6010-0100
ManualNumber5050-0334
Rev. E

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These instructions detail the basic operational guidelines for using the SX-70
Sodr-X-Tractor handpiece.
Introduction
The SX-70 Sodr-X-Tractor handpiece provides thermally enhanced through-hole
desoldering on extra heavy multilayer assemblies, at safer, lower temperatures, even
during continuous use and features a large easy-to-clean solder reservoir. The SX-
70 also provides safe removal of TQFP (Thin Quad FlatPack) and TSOP (Thin
Small Outline Package) surface mount components and continuous removal of old
solder from surface mount lands. Its slim-line, pencil grip design and finger
actuated vacuum switch facilitates ease of use and manipulation in tight places.
The SX-70 is a member of the PACE SensaTemp family of advanced handpieces.
CAUTION
Always return heated handpieces to the appropriate Tip & Tool Stand when
not in use. Failure to do so may cause burns to the operator, equipment or
worksurfacesandmaybeapotentialignitionsourceifcombustiblematerials
are nearby. Always use this handpiece in a well ventilated area to avoid
inhalation of fumes created by solder flux.
NOTES
When using your SX-70 Sodr-X-Tractor handpiece for the first time or if you
have just replaced the heater, we recommend that you follow the “SX-70
Heater Burn-in” procedure (Red tag on handpiece) to increase the life
expectancy of the heater.
Always use your SX-70 Sodr-X-Tractor with a clean VisiFilter element.
Otherwise a deterioration in performance or damage to the unit may occur.
Select and enter your desired true operating temperature on your PACE
power source. To save tip life and reduce the possibility of damage, PACE
recommendsusingthelowestpossibletiptemperaturethatwillproviderapid
yet controllable melt of the entire solder joint to be extracted. Begin with an
operatingtemperatureintherangeof316°C(600°F)andadjustasnecessary.

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Tip & Tool Stand Setup
If you have purchased a SX-70 handpiece with a Tip & Tool Stand, set up the Tip &
Tool Stand in the following manner.
1. Place 4 Rubber Feet on the bottom corners
of the enclosed Tip & Tool Stand.
2. The SX Tip & Tool Stand can be
attached to some PACE power
sources. Refer to the power source
Operation & Maintenance manual for
the applicable instructions.
3. Place the sponge in the Tip & Tool
Stand using the following procedure.
a) Remove the 2 small punched out
center portions of the sponge &
place into the sponge well of the
stand in the position shown.
b) Place the large sponge section into
the sponge well as shown.
c) Dampen the sponges with water.
4. Place the handpiece into its Tip &
Tool Stand.

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HandpieceSetup
NOTE
If using your SX-70 handpiece for the first time or if you have just replaced the
heater, we recommend that you follow the “SX-70 Heater Burn-in” procedure
(Red tag on handpiece) to increase the life expectancy of the heater.
HandpieceConnection
Connect the handpiece connector plug into one of the Power Receptacles on your
PACE power source in the following manner.
1. Align guide on connector with slot on power
receptacle.
2. Insert connector into power receptacle.
3. Turn the connector housing clockwise to
lock in place.
AirHoseConnection
NOTE
Ensure that only one air handpiece is connected to either the Vacuum
Port or Controllable PRESSURE Port at one time. Attachment to both
ports simultaneously will cause a deterioration of performance.
To set up your SX-70 air hose connection, perform the following steps:
1. Air Hose To Handpiece Connection
a) Attach one end of a 137cm (54 inch) length of air hose to the metal
tube in the back of the handpiece.
b) If you have a PACE system incorporating only one handpiece, attach
the air hose to the SX-70 power cable using the supplied Hose
Clamps. Space them evenly along the length of the power cable
starting at a point 6 inches from the ends of the handpiece.
c) If you have a PACE system incorporating 2 or more air handpieces
(e.g., SX-70, DTP-80, TJ-70, TP-65), you may wish to leave the air
hose assembly unattached to allow a quick change to any air
handpiece being used.

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2. Prepare a VisiFilter in the following manner:
a) Connect a 1 inch (2.5cm) length of
clear pvc air hose to the FLOW OUT
side of the VisiFilter; push and turn the
hose onto the VisiFilter nipple to seat.
b) Insert the ribbed end of a male quick
connect hose mount fitting (P/N 1259-
0087) into the free end of the 1 inch
(2.5cm) length of air hose connected to
the FLOW OUT side of the VisiFilter.
c) Connect the free end of the 137cm (54
inch) length of air hose to the FLOW
IN side of the VisiFilter.
d) Insert the end of the quick connect
hose mount fitting (on VisiFilter
FLOW OUT side) into the power
source Vacuum Port.
3. When using air pressure, and/or utilizing multiple air handpieces, PACE
recommends the use of the following set up procedure which utilizes
additional quick connect hose mount fittings. An assortment of quick
connect air fittings are supplied with each additional air handpiece.
a) Disconnect the 137cm (54 inch) length of air hose from the FLOW IN
side of the VisiFilter assembly. Insert the ribbed end of a male quick
connect hose mount fitting (P/N 1259-0087) into the free end of this
air hose.
b) Connect the free end of a 1 inch (2.5cm) length of air hose with an
installed female quick connect hose mount fitting (P/N 1259-0086) to
the FLOW IN side of the VisiFilter Assembly.
c) The 137cm (54 inch) length of air hose can now be easily moved
between the VisiFilter Assembly and the Controllable Pressure Port.
The VisiFilter assembly remains connected to the Vacuum Port.
4. Additional fittings may also be added to the hose connection at the rear of
each air handpiece to ease changing of handpieces.
NOTE
When removing any air hose, turn and pull. Do not attempt to pull hose
directlyoff. DamagetoorbreakageoffittingorVisiFiltermayoccur. Useyour
SX-70Sodr-X-TractorwithacleanVisiFilterelement. Otherwiseadeterioration
in performance or damage to the unit may occur.

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TipSelection
PACE Sodr-X-Tractor Tips come in three basic types.
1. Desoldering Tips - These tips are tinnable and provide enhanced thermal
performance for thru-hole desoldering on high mass boards.
2. Pik-Tips - Provide safe removal of TQFP (Thin Quad FlatPack) and
TSOP (Thin Small Outline Package) surface mount components.
3. Flo-D-Sodr Tips - These tips provide rapid, continuous extraction of old
or excess solder from SMT lands.
Size selection of tips is important. For thru-hole desoldering, select a tip with an
I.D. just large enough to allow the lead to freely pass inside. The tip O.D. should not
exceed the diameter of the land to minimize risk of damage to the board substrate.
When removing TQFPs or TSOPs, the Pik-Tip should be sized so that the tip blades
make proper contact with all the lead/land connections simultaneously.
NOTE
Periodically, clean the heater bore with a properly sized wire brush (3/16"
O.D. to insure optimum heat transfer and proper tip grounding.
TipInstallation
For maximum productivity and proper fit, install tips into your SX-70
Sodr-X-Tractor when the heater is hot.
CAUTION
Hold the handpiece with the heater pointed at an angle up to prevent injury
to personnel.
1. Insert the Tip fully into heater bore using
supplied Tip Tool.
2. Gently tighten the Heater Set Screw.
3. Recheck the Heater Set Screw
periodically to insure that it remains snug.

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Tip Preparation
Proper tip preparation will insure optimum results and increase tip life. Follow this
procedure before each component removal or land preparation operation and prior to
storage of the handpiece in its Tip & Tool Stand.
NOTE
TheuseofaPACETipMaintenanceStation(PACEpartnumber6993-0138)
is recommended for the proper preparation and maintenance of all SX-70
Pik-Tips. Topurchasethisitem,contactyourlocalauthorizedPACEdealer.
1. Ensure that the installed tip is at set tip temperature.
2. Using a moistened sponge, remove all solder dross and flux residue from
the tip.
NOTE
Ensure that the sponge material is moist and free of debris. Add water
ifnecessary. Wipingtheheatedtiponadryspongewillonlycontaminatethe
tip and ultimately the board.
3. All 3/16" shank tips are tinnable. Using a large gauge, flux cored
wire solder, tin the end of these tips. Proper tinning enhances heat
transfer to lands and extends tip life.
4. During Flo desoldering or Thru-hole desoldering, on heavily fluxed
or contaminated boards, debris may collect inside the tip bore. If this
occurs, clean the tip bore with the Sodr-X-Tractor Tip Cleaning Kit
(PACE part number 6993-0200).
5. The SX-70 handpiece is now ready for use. If not immediately using
the handpiece, store in its Tip & Tool Stand.
TemperatureSetting
To save tip life and reduce the possibility of damage to the PCB, PACE recommends
using the lowest possible tip temperature that will provide rapid yet controllable melt
of the entire solder joint. Begin with an operating temperature of 316°C (600°F) and
adjust as necessary. Tip temperatures in excess of 399°C (750°F) may cause
damage. For safest removal, some components on extra heavy assemblies may
require preheating or auxiliary heating.

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Thru-HoleSolderExtraction
1. Ensure that the air hose is connected to a VisiFilter and the Vacuum Port
on the power source. Select an operating temperature that will cause
complete solder melt in 2-5 seconds (somewhat longer on heavy
multilayer boards). A tip temperature of 316°C (600°F) is recommended
for most applications.
2. Position your index finger on the handpiece vacuum control switch.
3. Gently position the extractor tip over the lead contacting the solidified
solder keeping tip perpendicular to the pad and board.
NOTE - Do not apply pressure against the pad at any time during this
operation. Damage to the board may result.
4. Gently move the lead ...
a) in a circular motion for round
leads
b) in a back and forth motion
for flat leads
until the lead moves freely.
Free lead movement indicates
that complete solder melt has
been obtained.
5. While continuing to move lead, actuate vacuum with the finger switch
and keep on for at least 2 seconds to cool joint and prevent resweating.
The length of time from when heat is applied until the time vacuum is
started (i.e., complete solder melt) should be 2-5 seconds under normal
conditions. Heavy multilayer boards may require somewhat longer
heating times. In extreme cases, preheating or auxiliary heating is
recommended to achieve the safest results.
NOTE
Prematureactuationofthevacuummayresultinincompleteremovalofsolder
fromthejointbeingdesoldered. Freemovementoftheleadistheworkpiece
indicator that proper solder melt has been achieved. In the event that all the
solder has not been removed from the hole, resolder the hole and try again
after the board has been allowed to cool.

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6. Remove tip from pad and continue vacuum application for an additional 2
seconds to insure that all residual solder is drawn into the solder
collection chamber.
7. Retin tip using large gauge flux cored solder and return SX-70 to its Tip
& Tool Stand.
8. After all leads are desoldered, the component is easily removed. If any
solder should remain in the plated thru-hole after extraction, resolder the
connection and perform this procedure again.
Tip Cleaning
During heavy, continuous desoldering, on boards with flux residues or other
contamination, the tip may occasionally become clogged with such material. If
this should occur, clean the tip with the Tip Cleaning Kit (PACE part number
6993-0200) by inserting the wire tool into the tip end.
SpecialApplications
If you require assistance in the use of this handpiece or with a special application,
contact PACE Applications Support at:
Telephone: [phone] (toll-free) or (301) 490 - 9860
Fax: (301) 604 - 8782
Surface Mount Component Removal
TQFP and TSOP surface mount components can be removed using the SX-70
handpiece and the appropriate Pik-Tip. Old or excess solder can be removed from
surface mount lands using PACE Flo-D-Sodr tips.
PACE recommends the use of the Manual Assembly and Rework For Surface Mount
manual (P/N 6031-2107) as a guide for developing repair/rework procedures for
your particular applications.

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CleaningSolderCollectionChamber
As the Sodr-X-Tractor is used, solder and flux buildup will begin to impede the air
flow and decrease system performance. Regular cleaning of the chamber will keep
the Sodr-X-Tractor operating at peak performance. When cleaning the chamber,
perform the following procedure using the illustration as a reference.
1. Remove any installed tip using the Tip Tool.
2. While holding the Sodr-X-Tractor tip up, remove the End Cap Assembly
(refer to item À ) from the rear of the handpiece. This action is
accomplished by pushing the End Cap Assembly toward the front of the
handpiece and turning counterclockwise to disengage.
The glass chamber can be easily removed if it remains in the handpiece
when the end cap assembly is removed. Insert a small flat blade
screwdriver into the handpiece and gently push the front end of the glass
chamber off the front seal.
NOTE
Do not attempt to remove the solder collection chamber (glass or silicone
rubber chamber) from the Sodr-X-Tractor using pliers or any like tool. The
use of such tools may cause damage to the chamber.
3. To remove the chamber from the End Cap Assembly (item À ), grasp the
chamber by the end closest to the End Cap Assembly. On a heated
extractor this end may be warm to the touch. DO NOT touch the other
end as it initially may be too hot to touch. If dropped, a glass chamber is
likely to break.

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4. Clean and inspect the solder collection chamber in the following manner:
a) Glass Chambers - Push the S Baffle (item  ) and Filter (item  )
from the chamber. A bristle brush may be used for this purpose.
Check for breaks or cracks in the glass and for broken or rough edges
on the ends of the chamber. Replace if any damage is evident.
Clean the chamber and S Baffle with the large nylon bristle brush
which has been wetted with an approved solvent. Run the brush
through the chamber several times to remove solder and flux residues
which have built-up. If desired, apply mineral oil to the brush and
lightly coat the inside of the chamber and the S Baffle.
b) Silicone Rubber Chambers - Remove the Filter (item  ) and S
Baffle (item  ) from the chamber. Tap the side of the chamber
against the side of a waste container to release residual solder. Check
for any breaks or deformation of the chamber. After extended use, the
ends of the chamber may deform and cause air leaks at the rubber
seals (front and rear of handpiece). Replace if any damage is evident.
5. Assemble the solder collection chamber by installing the S Baffle (item
 ) and a new Filter (item  ) into the chamber. The S Baffle should
have enough tension to maintain a constant position within the chamber.
Bending of the baffle slightly at the center will readjust the tension. Do
not attempt to bend the baffle while installed in the chamber. The Filter
must line up with the markings on a glass chamber (just clear of the End
Cap Assembly in a silicone rubber chamber) and the rear of the S Baffle
should be positioned just touching the Filter.
7. To ensure that the chamber will remain attached to the End Cap
Assembly (item À ), seat the End Cap Assembly in the chamber and twist
to secure in place.
8. Hold the Sodr-X-Tractor with the vacuum control switch in the upright
position.
9. Insert the chamber into the Sodr-X-Tractor. Slide the chamber into the
handpiece and onto the front heater seal.
10. Inspect for proper seating of the chamber on the front seal.
11. Attach the End Cap Assembly (item À ) to the Sodr-X-Tractor by
pushing forward and turning clockwise to lock into place.
12. Check all air hose fittings. Actuate the vacuum and ensure that proper
vacuum flow is present at the tip.

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Table 1. Heater Assembly Checkout Procedures
Sympto
SymptoSympto
Sympto Checkout Procedure
Checkout ProcedureCheckout Procedure
Checkout Procedure Cause
CauseCause
Cause Solution
SolutionSolution
Solution
No heat Check resistance - Pin 2 to Pin
5. Resistance should be 8.2
to
9.5 ohms. If not - -
Open Heater Replace Heater
Check resistance - Pin 3 to Pin
6.
If circuit reads open - -
Open Sensor Replace Heater
Handpiec
overheati Check resistance - Pin 3 to Pin 6. Resistance should be 110
ohms. If circuit reads less than
105 ohms - -
Shorted Sensor Replace Heater
Fuse
blows
when unit
is
turned on
Check resistance - Pin 2 to Pin
5. Resistance should be 8.2
to
9.5 ohms. If not - -
Shorted Heater
Replace Heater
Assembly
NChkitPi4tOidti Cl H t
Handpiece Connector Plug
Corrective Maintenance
Your SX-70 requires no special maintenance other than being kept clean. The heater
bore and the heater assembly set screw which secures the tip must be kept free of
oxidation and debris in order to maintain the proper tip-to-ground resistance.
Refer to the Handpiece Connector Plug pin out illustration and Table 1 for
information on troubleshooting most handpiece problems. Disconnect the
handpiece from the Power Source and perform the "Heater Assembly Checkout
Procedures" with the handpiece (and heater) at room temperature. Use a meter to
check resistance across the Handpiece Connector Plug pins as outlined in the
"Checkout Procedure" column.

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Spare Parts
Description Part Number
Handle Assembly Kit 6993-0140
Heater Assembly 6010-0080-P1
Heater Set Screw 1348-0547-P10
Front (heater) Seal 1213-0033
Cord/Switch Assembly 4010-0098
Rear Seal Assembly 4010-0101
Glass Chamber 1265-0009-P1
Tubing, Silicone, Translucent, 54 Inches Long 1342-0001-13
Holder, Tube To Wire (pkg. of 6) 1321-0085-01
"S" Baffle 4010-0033
Filter (glass chamber) 1309-0018-P50
VisiFilter 1309-0028
VisiFilter Replacement Elements 1309-0027-P50
Tip Tool 1100-0206
Wire Brush, 3/16" Diameter 1127-0014-P5
Bristle Brush 1127-0002-P5
Sodr-X-Tractor Tip Cleaning Kit 6993-0200
PACE Screwdriver 1100-0230
Table 2. Spare Parts