Pace DUAL PATH SX-20 Manual

[PACE
| INCORPORATED |
OPERATION AND MAINTENANCE
INSTRUCTIONS FOR THE
NO CLOG
DUAL PATH"
SOLDER EXTRACTOR
MODELS
SX-20 SX-20V
SX-25 SX-25V
SX-30 SX-30V
MANUAL NO. 5050-0131
Featuring
Thermo-Drive™
HEAT CONTROL REV. C

(GENERAL INFORMATION
ASSEMBLING CHAMBER
START-UP ALL MODELS TO FRONT SEAL
To operate the Solder Extractor (all models), Look through vents to assure that the
a. place Solder Extractor in stand Chamber seats properly on the Front Seal.
b. set Temperature Control to 10 7
c. allow three (3) minutes warm-up time Chamber
d. reduce temperature. A temperature setting of ーー
712 to 8% is normal for most desoldering tasks Front
Seal _PROPERLY SEATED CHAMBER
e. use the Extractor
DESOLDERING ELECTRICALLY SENSITIVE COMPONENTS
Pace Power Sources with “Zero Power Switching” and all PED-A-VAC’S can be used with SX-20, SX-25 and
SX-30 Desoldering Handpieces for safe removal of components. Power Sources without “Zero Power
Switching’ capability can safely remove sensitive components when used with the SX-20V, SX-25V and SX-30V
Desoldering Handpieces. However, it is necessary to actuate the vacuum pump before the desoldering tip con-
tacts the component lead, and continue the pump operation until the desoldering action is complete. Vacuum
actuation is by finger tip control as described in this manual.
PROCEDURE FOR REMOVING GLASS CHAMBER
The Dual Path Solder Extractor is designed with a solder well which sits between the transfer tube and front
seal tube (see illustration below). This feature contributes to the efficient operation of the Dual Path. Under nor-
mal operation, the well is maintained at a temperature above that of solder melt and therefore any solder falling
into the well will remain molten. The following procedure should be followed before removing the Glass Chamber.
1. While the extractor is hot, hold the extractor vertical, with the desoldering tip pointing straight-up.
2. Gently tap the side of the extractor handle to loosen any molten solder that may be in the well so that gravi-
ty will flow the solder into the Glass Chamber.
3. While still holding the extractor vertically, apply two or three blasts of vacuum as to suck any loose solder
into the Glass Chamber.
You are now ready to remove the Glass Chamber from the Dual Path Solder Extractor for cleaning.
Solder
Well
Transfer
(Internal)
Tube
Front
Seal Tube
EQUIPMENT UPGRADING Table 1. OLD/NEW MODEL PACE PART NUMBERS
i Old Model Dual Path | New Pace
If you own an old model Desoldering Tool Old Model
and want to update it with a newer version, Pace Part No. | Model Part No.
use Table 1 to choose an appropriate new SX-199 7010-0017 SX-30 7010-0027
Solder Extractor Model: SX-199V 7010-0021 SX-30V | 7010-0028
ei SX-200 7010-0004 SX-20 7010-0023
8º 25 a SX-200V 7010-0013 SX-20V | 7010-0024
© SX-201 7010-0011 SX-25 7010-0025
o od SX-201V 7010-0014 SX-25V | 7010-0026
=
2

GENERAL INFORMATION >
Before using your Dual Path™ Solder Extractor, read this manual to become familiar with
it’s operation, capabilities, and maintenance. Used and maintained properly, your Dual Path
Extractor will serve you well for many years.
TABLE OF CONTENTS
Title Page
Generalinformation................................. eee 2
Theory of Operation 上 ユー ユー・ に に に に に に に に に に トト トト トト トト に トト トレ トト レレ トト トト トレ トト トレ トト ーーー て 5
ОрегаНоп......... еее еее еее наенннннь 7
Maintenance ... 14
Replacement Parts
MODELS SX-20 — SX-25 — SX-30
MODELS SX-20V — SX-25V — SX-30V
FIGURE 1. PACE DUAL PATH HANDPIECES
3

(C GENERAL INFORMATION
INTRODUCTION
Pace, Inc. is continuously improving its line of efficient and reliable instruments for the
non-destructive rework, repair and modification of electronic assemblies. This manual
describes six available Pace Solder Extractors and their uses.
Dual Path Solder Extractor Handpieces shown in Figure 1 work best with Pace Power
Sources. They can be used with other power and vacuum sources, providing they have the re-
quired outputs.
SPECIFICATIONS
All Dual Path Extractors are supplied with 3 wire grounded power cords and 35 watt Heaters, with
60 watt heat equivalent.
+ Models SX-20, SX-20V, SX-25 and SX-25V—Require 120VAC, 50/60HZ power.
® Models SX-30 and SX-30V—Require 24VAC, 50/60HZ power.
» VisiFilter—is provided with Models SX-25, SX-25V, SX-30 and SX-30V.
« Accessories— Tips, Cleaning Brushes, Hose and Instruction Manual are supplied with all
models.
PARTS IDENTIFICATION
The following breakdown identifies the major parts located on the standard and “V” Dual
Path Solder Extractors. Except for power cords and the Air Switch/Tube Assembly, the
Models SX-20, SX-25, and SX-30 are identical in construction to the SX-20V, SX-25V, and
SX-30V Models shown below.
Handle Vacuum Finger Control Air Switch/Tube Assembly
(“V" Models only) (“V" Models only)
Front
Seal Vent
Tip o
VA A E
Set
Screw Solder
Vent Transfer End Baffle
Heater
Tube
Sodr-X-Tractor
and
Cap
Assembly
"s"
Collection
Filter
Assembly
Baffle Chamber
MODELS SX-20, SX-25, AND SX-30 PARTS IDENTIFICATION
C MODELS SX-20V, SX-25V, AND SX-30V PARTS IDENTIFICATION
4

THEORY OF OPERATIONS,
DUAL PATH SOLDER EXTRACTOR
The Solder Extractor functions as a vacuum cleaning device to remove solder. Heat sup-
plied to the hollow tip (FIGURE 2) melts the solder, activating the vacuum flow which ex-
tracts the liquid solder from the joint and transfers it quickly and safely to the solder collec-
tion chamber within the handle.
== =
FIGURE 2. CUT-AWAY VIEW OF DUAL PATH SOLDER EXTRACTOR MODEL SX-25
The “V” Model Solder Extractors (FIGURE 3) have the same features as above Models, and an addi-
tional air switch/tube assembly to the handle for permitting instantaneous finger-tip-actuated
vacuum control. This vacuum control gives users “Spike Free” desoldering capabilities for CMOS
and similar static sensitive components (when used with power sources not equipped with elec-
tronic “Spike Free” Power™ output).
FIGURE 3. CUT-AWAY VIEW OF DUAL PATH SOLDER EXTRACTOR MODEL SX-25V _)
5

THEORY OF OPERATION
All Dual Solder Extractor models allow guick hand-removal of the solder collection
chamber (FIGURE 4) for maintenance. The collection chamber is removed by a guick-twist
without touching the hot chamber or of disturbing or disconnecting any heated elements or
electrical connections. Ingested volatized flux and coating are prevented from entering the
pump or vacuum source by the primary filter at the inside rear of the glass chamber. This
filter is easily visible through two inspection ports in the handpiece and should be replaced
when discolored.
RS Quick
Twist
Connector
Inspection
Port (2)
FIGURE 4. SOLDER EXTRACTOR HANDPIECE WITH
COLLECTION CHAMBER PARTIALLY REMOVED
VISIFILTER'"
An external filter (FIGURE 5) traps volatiles which are not handled by primary filter.
VisiFilters are optionally available with replaceable filter elements, (FIGURE 6). Replace
VisiFilter or Element when heavily discolored.
FIGURE 5. VISIFILTER FIGURE 6. VISIFILTER WITH
REPLACEABLE ELEMENTS

TIP SELECTION GUIDE
One of the most important aspects for successful solder extraction is the selection of the proper
size of Tip for the job. Keep several points in mind while selecting the Tips:
OPERATION ~
| Clearance
STEP 1. The Inside Diameter (1.D.) of the Tip must be large
enough to fit loosely over lead to provide clearance for air
and molten solder flow.
STEP 2. The Outside Diameter (0.D.) of the Tip must be
smaller than the pad diameter to permit contact with the
copper pad while preventing contact with the base material.
STEP 3. Match the Tip to the work. Small I.D. Tips for small
leads, larger Tips for heavier leads.
STEP 4. For desoldering terminals and solder splash
removal, use largest I.D. Tip available.
Extractor
Tip
% inch
(952cm)
Heater
Assembly
Tip Tool
에: Heater
Screwdriver us,
Extractor
Tip
NM
STEP 5. Adjust the selected Tip to extend approximately
Ye inch (952cm) beyond the heater body for all normal
desoldering tasks.
STEP 6. Tighten retaining screw approximately Ya turn after
screw contacts Tip. DO NOT overtighten.

OPERATION
SET-UP
STEP 1.Attach vacuum hose to SX-20/SX-25/SX-30
handpiece.
uret
STEP 3. Attach hose to cord with retainer clamps.
STEP 5. Select and attach the tip with a screw driver.
Refer to Tip Selection Guide (page 14).
outlet. Model SX-25 uses 120VAC 50-60HZ supply;
Model SX-30 uses 24VAC 50-60 HZ supply.
X
STEP 2. Attach hoses to the “V" Model handpiece as
shown. Assemble the separate 12” piece of hose in-
cluded.
STEP 4. Attach VisiFilter with raised lettering towards
handpiece. Connect short hose between Power Source
and VisiFilter. NOTE: VisiFilter is not used with the
SX-20(V) models.
αι
ad LA
STEP 6. Attach air/vacuum hose to Power Source. Use
maximum vacuum available. Optional air hose fittings
are available to fit all Pace Power Sources.
STEP 8. Solder Extractor vents may be replaced
without removing heater assembly

INITIAL START-UP ALL MODELS
To operate the Solder Extractor (all models),
a. place Solder Extractor in stand
b. set Temperature Control to 10
c. allow three (3) minutes warm-up time
d. reduce temperature. A temperature setting of 7% to 8% is normal for most
desoldering tasks
e. use the Extractor
V-MODEL OPERATION
To operate the “V” Model SX-20V, SX-25V and SX-30V Handpiece controlled vacuum
Extractors:
a. Hold the handpiece as you would hold a pencil (FIGURE 7). Hold your index
finger bent, with the tip of the finger resting firmly on the flat portion of the
Vacuum Control Bar, and just behind the orifice.
b. On the Power Source, turn Pump switch to the “ON” position (Refer to Opera-
tion and Maintenance Instructions for your Power Source).
c. To actuate the vacuum, slide your finger tip firmly forward to completely seal the
orifice. As long as the orifice is closed, the vacuum is actuated through the Sodr-X-
Tractor tip. Keep moving the component lead with the Solder Extractor tip during
full vacuum operation. Continue stirring lead to cool down the joint.
d. After extracting the solder, remove the extractor tip from the joint, then slide
your finger tip back off the orifice to terminate the vacuum. (If operation is
completed, turn off pump. See Operation and Maintenance instruction for
your Power Source).
OPERATION >
Vacuum
Control Bar
FIGURE 7. CORRECT POSITION FOR HOLDING THE HANDPIECE 2)
9

(OPERATION
VACUUM EXTRACTION
When performing a desoldering operation, the following steps should be followed for best results.
STEP 1. Position the Tip over the lead making contact with
solder. As the solder melts, allow the Tip to gently rest on
a film of solder between solder and Tip.
STEP 2. Move Tip with a stirring motion, dwelling until lead
moves freely within the board hole. Free movement of the
lead indicates complete solder melt.
STEP 3. Apply vacuum and continue stirring action dur-
ing vacuum application. To remove solder, maintain light
contact. (NOTE: Pressure can damage or lift the pad).
STEP 4. Continue stirring action and vacuum flow to cool
joint area.
STEP 5. Continue vacuum flow one or two additional
seconds after removing Tip from the board to assure com-
plete transfer of the solder to Chamber.
STEP 6. Check your work. If any solder remains in a plated-
thru hole (PTH) after extraction, resolder and extract again
Allow
cool down between resoldering and extraction
10