Pace 20A Manual

Operation & Maintenance Manual
ST 20A Systems

i
© 1995 PACE Incorporated, Laurel MD. All rights reserved. Printed in the U.S.A.
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:
AdapTip, Arm-Evac, Cir-Kit, ComForm I, ConducTweez, CRAFT,
Dual Path, Flo-D-Sodr, FuseSet, HandiPik, HotSpot, LapFlo, MBT,
Micro Portable, MicroChine, MiniChine, Mini-Wave, PACE, Pacenter,
Ped-A-Vac, PETS, Pik-Vac, PRC, PRINT,Pro-Evac,Redi-Rak,ResisTweez,
SensaTemp, SMR, Snap-Vac, Sodr-Pen, Sodr-X-Tractor, SR-3, SR-4, ST,
StripTweez,SwaPlater,ThermoBand,Thermo-Drive,ThermoJet,ThermoPart,
ThermoPik, ThermoTweez, Tip-Evac, VisiFilter.
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:
Auto Off, Cubby-Vac, Datastore, Dust Evac, EKO, Lab Evac, MicroSpin,
PaceLink, PaceNet, Pik & Paste, Prep-Set, Pulse Plate, Spa-Kleen,
ThermoBond, TinSpin, TweezPik, Uni-Frame, V-A-N, Ventur-Evac.
Since 1958, PACE Incorporated has provided advanced technology
training in all aspects of hand soldering, rework and repair.
Additional copies of this manual or other PACE literature may be obtained from:
PACE Incorporated (301) 490 - 9860
Sales Administration (301) 498 - 3252 Fax
9893 Brewers Court
Laurel MD 20723-1990

SYSTEM QUICK START
The ST 20A systems are very easy to operate. ST 20A-SP systems (using
SP-2A Sodr-Pen handpiece) can be quickly set up for use in standard
solderingoperations. TobeginoperationofaST20A-SPsystemquickly,
perform the "Set-Up" and "Operation" procedures detailed on pages
7-11andpage16ofthismanual. Ashadedtitlebaroneachofthesepages
highlight their location.
When performing other operations (e.g., applications requiring use of large
SMT tips), PACE recommends that the user read and fully understand all of
the "Operation" portion of this manual in order to utilize the features of this
system. ST20A-TTandST20A-PSsystemsareshippedwithanadditional
manual which should be read and fully understood before operating those
systems.
1
For any questions regarding this Operation & Maintenance Manual, contact your
local authorized PACE distributor or contact PACE directly at:
Telephone [phone], Fax [phone]
PACE Incorporated
9893 Brewers Court
Laurel MD 20723-1990
MANUAL NUMBER 5050-0355
REV. C

2
Table of Contents
TITLE PAGE
General Information ................................................................................................ 3
Introduction .................................................................................................. 3
Specifications................................................................................................ 4
Parts Identification........................................................................................ 5
Safety ....................................................................................................................... 6
Set-Up...................................................................................................................... 7
Auto Off Safety System................................................................................ 7
Tip & Tool Stand .......................................................................................... 8
PaceLink ..................................................................................................... 10
Handpiece Connection................................................................................ 11
Air Hose Routing........................................................................................ 11
System Power Up ....................................................................................... 11
Operation ............................................................................................................... 12
Sodr-Pen Tip Selection & Use .................................................................... 12
Available Tips ............................................................................................. 14
Sodr-Pen Tip Installation ............................................................................ 15
Temperature Selection ................................................................................ 16
Variable Temperature Control ............................................................... 16
Temperature Dial/Lock ......................................................................... 16
Tip Offset............................................................................................... 16
LED Operation ........................................................................................... 17
Auto Off Safety System.............................................................................. 17
Calibration ............................................................................................................. 18
Corrective Maintenance ........................................................................................ 19
Power Source .............................................................................................. 19
Handpieces.................................................................................................. 19
Sodr-Pen Heater Replacement .................................................................... 20
Replacement Parts ................................................................................................. 21
SP-1A/SP-2A Handpieces .......................................................................... 21
Accessory Tray Items ................................................................................. 22
Optional & Accessory Items....................................................................... 22
Manual Improvement & Comment Form ............................................................. 25
TABLE PAGE
Table I Single Point Tips ................................................................................. 9
Table II Power Source Corrective Maintenance ............................................ 13
Table III Heater Assembly Checkout Procedures............................................ 13
Table IV SP-1A/SP-2A Parts ........................................................................... 15
Table V Accessory Tray Items ....................................................................... 16
Table VI Optional & Accesory Items .............................................................. 23

3
General Information
Introduction
Thank you for purchasing the PACE model ST 20A Soldering System. This manual
will provide you with the information necessary to properly set up, operate and
maintain the system. Please read this manual thoroughly before using the system.
The ST 20A systems utilize the model PPS 15A power source which incorporates a
highly responsive SensaTemp (closed loop) control system providing up to 80 Watts
of total power to a single output channel.
The ST 20A systems are available in either the 115 VAC, 230 VAC or 100 VAC
version. The 230 VAC version system bears the CE Conformity Marking which
assures the user that it conforms to all the requirements of council directive
EMC 89/336/EEC. The systems package the power source with a selection of
accessories and functional aids. These systems are as follows:
ST 20A-SP - Consists of the PPS 15 power source (115 VAC, 230 VAC or 100
VAC version), SP-2A Sodr-Pen, SP Tip & Tool Stand and accessory kit. The standard
SP-2A Sodr-Pen (uses 3/16" shank tips) provides high capacity heating necessary to
perform thru-hole soldering and SMT component removal/replacement operations.
ST 20A-TT - Consists of the PPS 15 power source (115 VAC, 230 VAC or 100
VAC version), TT-65 ThermoTweez handpiece, TT Tip & Tool Stand and accessory kit.
The standard TT-65 ThermoTweez handpiece provides safe, one-handed removal of
a wide variety of components (PLCCs, SOICs, PQFPs, BQFPs, SMT Connectors
etc.) in a matter of seconds. Its lowtemperature, high capacity heating can remove
even the largest components quickly and easily.
ST 20A-PS - Consists of the PPS 15 power source (115 VAC, 230 VAC or 100 VAC
version), PS-50 Prep-Set and accessory kit. The standard PS 50 Prep-Set is a fully
integrated system for easily fluxing and tinning leads, wires and dressing soldering
tips, even pre-heating components before final soldering.
Other available PACE SensaTemp handpieces may be used with the ST 20A system
to perform a wide variety of advanced surface mount & thru-hole component
removal/replacement operations. These include:
SX-70 Sodr-X-Tractor Handpiece TJ-70 Mini ThermoJet Handpiece
TP-65 ThermoPik Handpiece
These handpieces require an air source. Any of these handpieces can be used if the
system power source is connected to a PACE ST 60 system (via PaceLink
Receptacle). Alternatively, a Ped-A-Vac III Foot Pedal may be purchased and
connected to a 60-90 p.s.i. air supply to provide a vacuum source for the TP-65 and
SX-70 air handpieces.

4
Specifications
System Power Source Power Requirements
The system power sources are available in either the 115 VAC, 230 VAC or 100 VAC
version as listed below.
PPS 15A (ST 20A system) - Operates on 97-127 VAC, 50/60Hz, 90 Watts
maximum at 115 VAC, 60Hz
PPS 15AE (ST 20AE system) - Operates on 197-264 VAC 50/60Hz, 80 Watts
maximum at 230 VAC, 50Hz
PPS 15AJ (ST 20AJ system) - Operates on 90-115 VAC 50/60Hz, 80 Watts
maximum at 100 VAC, 50/60Hz
Temperature Specifications
Handpieces
Tip Temperature Range
93°C to 482°C (200°F to 900°F) nominal.
Temperature Stability
±1.1°C (±2°F) at idle from set tip temp.
PS 50 Prep-Set
Temperature Range
93°C to 371°C (200°F to 700°F) nominal.
NOTE - Actual minimum and maximum Operating Tip Temperatures may
vary depending on Handpiece (or PS 50), Tip Selection and application.
EOS/ESD Specifications
The specifications shown below apply except on "Soft Ground Systems" which have
a 1 meg ohm current limiting resistance and a label placed on the power source front
panel referring to EN 100015-1.
Tip-To-Ground Resistance
Less than 5 ohms.
AC Leakage
Less than 2 Millivolts RMS from 50Hz to 500Hz.
General Information

5
Parts Identification
General Information
SP-2A Handpiece
(standard with ST 20A-SP Systems)
TT-65 Handpiece
(standard with ST 20A-TT Systems)
PS-50 PrepSet
(standard with ST 20A-PS Systems)

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The following are safety precautions which personnel must understand and follow
when using or servicing this product.
1. To prevent personnel injury, adhere to safety guidelines in accordance
with OSHA and other applicable safety standards.
2. SensaTemp handpiece heaters and installed tips are hot when the
handpiece is powered on. DO NOT touch either the heater or the tip.
Severe burns may result.
3. The enclosed Tip & Tool Stand has been designed specifically for use
with the your handpiece and houses it in a manner which protects the
user from accidental burns. Always store the handpiece in its Tip & Tool
Stand.
4. Always use this system in a well ventilated area. A fume extraction
system such as those available from PACE are highly recommended to
help protect personnel from solder flux fumes.
5. Exercise proper precautions when using soldering materials (e.g.,
fluxes). Refer to the Material Safety Data Sheet (MSDS) supplied with
each material and adhere to all safety precautions recommended by the
manufacturer.
6. The following safety precautions cover use of the PS 50 Prep-Set system.
a) The PS-50 Prep-Set heater and installed Pot-Tip (+ solder) or Preheat
Plate are hot when the Prep-Set is powered on and for a period of
time after power off. DO NOT touch either the heater, Preheat Plate,
Pot-Tip or solder. Severe burns may result.
b) Insure that the rubber heat shield (covering the heater) is in place.
Never operate the system without the shield in place. Severe burns
may result.
c) Turn the Power Switch off and allow the installed solder Pot-Tip or
Preheat Plate to cool before changing. Never touch a hot Pot-Tip or
Preheat Plate with bare hands.
7. POTENTIAL SHOCK HAZARD - Repair procedures on this product
should be performed by Qualified Service Personnel only. Line voltage
parts will be exposed when the equipment is disassembled. Service
personnel must avoid contact with these parts when troubleshooting the
system.
Safety

7
Set-Up
Set up the ST 20A system using the following steps and associated drawings. If you
have purchased a system which includes the TT-65 ThermoTweez handpiece or the
PS 50 Prep-Set system, refer to their Operation & Maintenance manuals for
applicable set-up instructions for those items.
1. Store the shipping container(s) in a
convenient location. Reuse of these
containers will prevent damage if you
store or ship the system.
2. Place the Power Switch in the “OFF” or
“0” position.
3. Place 4 of the supplied Rubber Feet on
the base of the power source. Remove
the paper backing and place in corner
indentations. Refer to illustration below.
Auto Off Safety System
The Auto Off Safety System removes power
from the connected handpiece after 90
minutes of handpiece inactivity. As
received from the factory, the feature is
Disabled (“2” position). The LED on the
front panel will illuminate Yellow in color
(with handpiece connected).
Refer to the description of the Auto Off Safety
System detailed in the “Operation” portion of
this manual.
To Enable (“1” position) the Auto Off feature,
perform steps 1-3.
1. Place the power source on a work
surface with the bottom facing up as
shown in the illustration.
2. Move the switch to the “1” (Enable)
position. During normal use, the LED
will now be illuminated Green in color
(with handpiece or PS-50 connected).
3. Position the system upright on a
convenient bench.

8
Set-Up
Tip & Tool Stand
If your system has been shipped with a Tip &
Tool Stand, perform the following procedure.
1. Place 4 Rubber Feet (packed with
small accessories) on the bottom
corners of any enclosed Tip & Tool
Stand.
2. If your system has been shipped with
a TT Tip & Tool Stand (for TT-65
ThermoTweez), install the bracket
using the enclosed mounting screws.