Pace 20A, ST 20A, ST 20A-SP, ST 20A-TT, ST 20A-PS Maintenance 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 re gistered trademarks and/or servicemarks of PACE Incorp orat e d,
Laurel Maryland U.S.A. and may only be used to identify genuine PAC E p roducts 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,
P ed-A-V ac, PETS, Pik-Vac, PRC , PRINT, Pro-Evac , Redi-Rak, ResisT weez,
SensaTemp, SMR, Snap-Vac, Sodr-Pen, Sodr-X-Tractor, SR-3, SR-4, ST,
StripT weez, SwaPlater, ThermoBand, Thermo-Drive, ThermoJet, ThermoP art,
Ther moPik, ThermoTweez, Tip-Evac, VisiFilter.

The following are t rademarks 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,
Ther moBond, TinSpin, Twee zPik, 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
soldering operations . T o begin operation of a ST 20A-SP system quickly ,

perform the "Set-Up" and "Operation" procedures detailed on pages
7-11 and page 16 of this manual. A shaded title bar on each of these pages

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. ST 20A-TT and ST 20A-PS systems are shipped with an additional
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 Temperat ure Control ............................................................... 16

Tempera ture 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 Tra y 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. A ny 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 pow er 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)

6

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 & Too l
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. Seve re 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 b y 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 The rmoTweez 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
receive d 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 a ny enclosed Tip & Too l
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.

9

Set-Up

3. The Tip & Tool Stand may be used
as “free standing” or may be
attached to either side of the power
source. Attach the stand using the
following procedure.

a) Insert the 2 enclosed Mounting

Screws (head first) into the 2
power source mounting slots
shown. Slide the screws toward
the rear of the power source.

b) Place the Tip & Tool Stand

beside the power source,
inserting ends of the 2 Mounting
Screws into the 2 Tip & Tool
Stand mounting holes shown.

c) Install a knurled Thumb Nut onto

the end of each Mounting Screw.
Tighten Thumb Nuts to secure
the stand in position.

4. Place the supplied 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.

5. Place the handpiece into its Tip &
Tool Stand.

10

Set-Up

PaceLink

The PaceLink Receptacle on the front panel of
the power source allows the operator to activate
the AUTO SNAP-VAC and Controllabl e
PRESSURE features of a ST 60 system power
source. If an air handpiece (SX-70, TP-65 or
TJ-70) is connection to the ST 20A, actuation of
its finger switch will activate air flow through
the AUTO SNAP-VAC and Controllabl e
PRESSURE ports of the ST 60 system. To link
your ST 20A system to a ST 60 system, perform
the following procedure.

1. The 2 systems should be positioned
adjacent to each other. They can be placed
side by side or may be stacked one on top
of the other. Place your ST 20A system
beside or stack with your ST 60 system.

2. Use a PaceLink cable (available from
your local PACE distri butor) to connect
the systems. Place the plugs on the ends
of the cable into the PaceLink
Receptacles on both systems.

3. Ensure that a VisiFilter assembl y is
connected to the ST 60 AUTO SNAP-
VAC Port .

4. Connect the Air Hose of the handpiece
currently in use to the VisiFilter assembly
or Controllable PRESSURE Port.

CAUTION

Systems connected together through the PaceLink must be used and controlled
by a single operator. Any attempt to operate by more than one individual can
create a hazard condition and will cause a deterioration in performance.

Ensure that only one air hose is connected to the AUTO SNAP-VAC or
Controllable PRESSURE port at one time. Attachment to both ports
simultaneously will cause a deterioration in performance.

11

Handpiece Connection

Connect the handpiece (or PS 50) connector plug into the Power Receptacle in the
following manner.

1. Turn the Locking Ring fully
counterclockwise with the Connector
Key end facing the power source.

2. Align the Connector Key with the
Receptacle Keyway.

3. Insert the connector into the power
receptacle.

4. Turn the Locking Ring fully clockwise
to secure in place.

Air Hose Routing

When using an Air Handpiece (e.g ., SX-70
Sodr-X-Tractor) or a Tip-Evac Fume Extraction
System, any associated air hose(s) can be routed
through the 2 Air Hose Feed Thru holes located
on the bottom of the power source.

System Power Up

1. Insert the female end of the power cord into the AC Power Receptacle at
the rear panel of the power source.

2. Plug the prong end (male end) of the power cord into a 3 wire grounded
AC supply rec eptacle. The system is now ready for operation.

CAUTION

To insure operator safety, the AC supply receptacle must be checked for
proper grounding before initial operation.

3. Read the “Operation” section of this manual thoroughly before operating
the system. Included is a description of Sodr-Pen operation. Shipped
with ST 20A-TT and ST 20A-PS systems is an additional Operation &
Maintenance manual wh ich details operation of the TT-65 ThermoTweez
handpiece or PS-50 Prep-Set.

Set-Up

12

Sodr-Pen Tip Selection & Use

1. HEAT TRANSFER: Maximize thermal

transfer by selecting the shortest, fattest
tip with the largest surface contact area
which appropriately fits the work. Keep
the tip clean and freshly tinned and clean
the work of oxides or other residues.

When soldering, angle the tip to the joint
so that there is maximum surface contact
area. The use of a “solder bridge” to
enhance “thermal linkage” will also
improve heat transfer.

Operation

2. TIP A CCESS & VISIBILITY: The tip selected must easily contact the

joint without touching the board substrate, adjacent components or other
solder joints.

Longer, thinner, more tape red tips allow the operator to more easily
access and view the solder joint during soldering for better process
control. Howeve r, such tips generally have much less heat transfe r
ability than shorter, fatter tips.

13

3. TIP TEMPERATURE: Use the lowest tip temperature wh i ch will
achieve rapid yet controllable melt of the entire joint(s). Begin with a
temperature of 316°C (600°F) and adjust as necessary to suit the
particular application and operator skill level. Lower tip temperatures
reduce the risk of damage and increase tip life.

4. SMT REMOVAL: Tips for SMT re moval
applications must fit over (or around) the
component body, and contact all the solder
joints at once. When all the solder joints
reflow completely, remove the component.

5. SODR-PEN HANDPIECES: The SP-2A Sodr-Pen (comes standard
with your ST 20A-SP system) uses 3/16" shank tips providing maximum
heat transfer for Surface Mount and multilayer board applications.

The optional SP-1A Sodr-Pen uses 1/8" shank tips and features a slimmer,
more compact heater for easier access on densely populated assemblies.

Operation

14

Operation

Available Tips

Shown below is a partial listing of available single point tips plus illustrations of
different tip configurations. Contact your local authorized PACE distri butor fo r the
Tip & Applications catalog whi ch contains a complete list of tips.

Table I. Single Point Tips

FlatPack TipSocket Tip

SOIC Tip

3/16" Shank Thermo-Drive Tip

1/8" Shank Conical Tip

3/16" SHANK TIPS

(for SP-2A Sodr-Pen)

3/16" SHANK EXTENDED REACH

TIPS

(for SP-2A Sodr-Pen)

DESCRIPTION P ART # DE SCRIPTIO N P ART #

1/64" Conical 1121-03 57 1/64" Conical 1121-052 8
1/64" Bent Coni cal 1121-03 63 1/32" Conical 1121-052 7
1 /32" Ch is el 1121-03 59 1/1 6" C hisel 1121-053 3
1/32" Bent Chis el 1121-03 61 3/32" Chisel 1121- 0529
1/32" Conical 1121-03 36 1/8" Chi sel 1121-053 0
1 /16" Chisel ( M ic roFi ne ) 1121-03 49 3/1 6" C hisel 1121-053 1
1 /16" Ch is el 1121-03 35 Single Sided Chisel 1121-053 2
1/16" Chis el ( High Capacity ) 1121 - 0414

3/16" SHANK THERMO-DRIVE TIPS

(for SP-2A Sodr-Pen)

1/16" Chis el ( Ext ended Reach) 1121-04 99
1/16" Bent Chisel (Ext. Reach) 1121-05 00 1/64" Conical 1121-051 6
3 /32" Ch is el 1121-03 60 1/6 4" Be nt Conical 1121-052 6
1 /8 " Chisel 1121 -03 37 3/64" C hisel 1121-052 4
3 /16" Ch is el 1121-03 58 3/6 4" Be nt Chisel 1121-052 5
S ing le Sid ed Ch is el 1121 -04 06 1/16" C hisel 1121-051 0
1/4" Flat Blade 1121-04 02 1/8" Chi sel 1121-051 8

0.40" Flat Blad e 1121-03 05

1/8" SHANK TIPS*

(for SP-1A Sodr-Pen)

Mini-Wave 1121-0490

* These t i ps ( 1/ 8" shank) can be inst al led
in the SP- 2 A Sodr- Pen using t he PACE
AdapTip ( Part Number 1360- 0083-P1).

1/32" Conical 1121-050 3
1/16" Chisel 1121 - 0502
1/8" Chi sel 1 121-0501

15

Operation

NOTE

Periodically, clean the heater bore with a properly sized wire brush (3/16"
O.D. for SP-2A and 1/8" O.D. for SP-1A) to insure optimum heat transfer and
proper tip grounding.

Sodr-Pen Tip Installation

For maximum productivity and proper fit, install tips into your Sodr-Pen when the
heater is hot.

CAUTION

Hold the handpiece with the heater pointed at an angle up to prevent injury
to personnel.

1. Select the proper tip for your application. Refer to Table I or the PACE
Tip & Applications Catalog.

2. Install the selected tip in the following manner.

a) Hold the handpiece with the heater up at an angle (heater hot).
b) Insert the Tip all the way into the heater bore using the supplied Tip

Tool.

c) Gently tighten the heater Set Screw.

3. Recheck the tip Set Screw periodically to insure that it remains snug.

16

Operation

Temperature Selection

Variable Temperature Control

Adjust the Vari able Temper atur e Control Knob
to the desired temperature setting. Notice that
the control dial has a White graphic scale
denoting temperature in °C (Celsius) and a
Yellow graphic scale denoting temperature in
°F (Fahrenheit). These numerical scales
denote the set tip temperature times 100 (e.g.,
“3” on the White scale is 3 x 100 or 300°C).

Temperature/Dial Lock

The Variable Temperature Control Knob can
be locked in position (at one temperature) to
avoid accidental or unauthorized changes of
the temperature setting. Perform the following
procedure to lock the Vari able Temperature
Control Knob.

1. Adjust the Temp. Contr ol Knob to the
desired temperature setting.

2. Using the Temp. Locking Key (hex
head wrench) included with the system,
tighten the 2 set screws on the Temp.
Locking Ring.

NOTE - Temperature will remain at its locked setting, even if the Variable
Temperature Control Knob is forced to move.

Tip Offset

Differences between the temperature settings and true tip temperatures are negligible
when using Thru-Hole, single point soldering tips. With any heating system
however, True Tip Temperatures can differ gr e atly from temperature settings when
using larger SMT soldering tips. This difference is called Tip Temperature Offset.
PACE recommends the use of the Tip & Temperature Selection System booklet
(PACE P/N 5050-0251) as a guide to accurately set and maintain a true tip
temperature for any size and type of SMT tip.

17

Operation

LED Operation

The tri-colored (Red, Green and Yellow) LED on the power source front panel
indicates System Status (by color illumination) and Power Receptacle output status
(LED OFF, ON or Flashing). Following is an explanation of these status indicators.
Refer to the illustration at the bottom of this page.

Green Illumination - Auto Off Safety System feature “Enabled”.
Yellow Illumination - Auto Off Safety System feature “Disabled”.

Red Illumination - Auto Off Safety System feature has turned system power off or

the connected handpiece is faulty (see Corrective Maintenance section). Turn the
system Power Switch off (“0”) and then back On (“1”) to reset the system.

LED Full On - Continuous power is being delive red to the handpiece. This
condition is evident when the system is first powered up (handpiece heater cold) or
the Variable Temperature Control setting is increased.

LED Flashing - Indicates that the set tip temperature (as set on the Variable
Temperature Control) has been rea ched. Power to the handpiece is cycling Off and
On to maintain set temperature.

LED Off - No power is being delivered to the handpiece heater. This condition is
evident if the Variable Temperature Control setting is decreased. If the LED never
illuminates, check for a faulty handpiece (see Corrective Maintenance section).

Auto Off Safety System

The Auto Off Safety System is a feature which,
when Enabled, (see Set-Up section of this
manual) removes power from the connected
handpiece after 90 minutes of handpiece
inactivity.

During normal use with this feature enabled,
the LED on the power source will be
illuminated Green in color (may be flashing).
When the system goes into Auto Off Mode, the
LED will illuminate Red in color.

To resume normal operation, the Power
Switch (on rear panel) must be turned Off
(“0”) position and then back On (“1”).

18

Calibration

The ST 20A system can be checked for calibration according to PACE requirements.
Also, a temperature setting normally used by the operator can be adjusted to the
precise temperature indicated on the Dial/Display. No internal adjustments can be
made to the power supply. To verify calibration of the power supply, perform the
following procedure.

1. Install a tip with an attached thermocouple wire into the handpiece
connected to the system. Tips with K type thermocouples are available
from PACE; use part number 7021-0004-P1 when orderi n g.

2. Connect the thermocouple assembly to a PACE Process Monitor (part
number 8001-0077 or 8001-0078) or appropriate temperature meter.

3. When set fully counterclockwise,the pointer
of the Variable Temperature Control knob
will align to the Calibration Mark as shown.
With the system turned on, adjust the
Va riable Temperature Control to obtain a
stable tip temperatu re of 300°C (for PACE
factory specifications) or the temperature
setting normally used by the operat o r.

If the temperature displayed on the Process Monitor (or temperature meter)
is within ±5°C (10°F), perform steps 4 thru 6 to obtain a precise reading. If
the temperature is off by more than ±5°C, the handpiece may require
maintenance. Recheck the temperature using a second handpiece.

4. Carefully lock the Variable T emperature
Control in position by tightening the 2 inner
set screws (on Temp. Locking Ring).

5. Loosen the set screw on the Variable
Temperature Control knob. Position the
knob with the pointer aligned to match the
temperature indicated on the Process
Monitor (or temperature meter). Secure the
knob in position by tightening the set screw.

6. Loosen the 2 inner set screws (on Temp.
Locking Ring) to unlock the Variabl e
Temperatu re control if adjustment of
operating tip temperature is desired.

19

Corrective Maintenance

Power Source

Most malfunctions are simple and easy to correct. Refer to Table II below to clear
these malfunctions.

Symptom Probable Cause Solution

No power to system. Bl own Fuse Check handpiece using Table III . Replace the

fuse (locat ed in the AC Recept acle/Fuse Holder)
with one of same v alue (see Table V part s list) .

No heat on handpiece. Defective Heater See Table I I I below or refer to handpiece M anual.

Table II. Power Source Corrective Maintenance

Handpieces

The following “Heater Assembly Checkout Procedures” (Table III) is applicable
to all PACE SensaTemp handpieces used with the ST 20A system except for the
ThermoTweez (TT-65) handpiece . Refer to either of the TT-65 man uals (5050­0300 or 5050-0336) for troubleshooting procedures pertinent to that handpiece.

Perform the procedures with the handpiece (and heater) at room temperature. If the
handpiece is warm, resistance readings will be different from those shown.
Disconnect the handpiece from the power source. Use a meter to check resistance
across the handpiece connector plug pins as outlined in the “Checkout Procedure”
column.

Table III. Heater Assembly Checkout Procedures

Symptom Chec kout Proced ure Cause Solution

Heater

Specifications

No heat Check resistance - Pin 2 to

Pin 5. Refer to "Heater
Specifications" column.
If r esistance is high - -

Open Heater Replace Heater

Assembly.

SP-1A

SP-2A

SX-70

TP-65

= 10-12 ohms

= 8-10 ohms

= 8-10 ohms

= 9 - 11 ohms

Check resistance - Pin 3 to
Pin 6. If circuit reads open - -

Open Sensor Replace Heater

Assembly.

Handpiece
over heating
LED is Red

Check resistance - Pin 3 to
Pin 6. Resistance should be
110 ohms. If resistance is
less than 105 ohms - -

Shorted Sensor Replace Heater

Assembly.

Fuse blows
when unit is
turned on.

Check resistance - Pin 2 to
Pin 5. Refer to "Heater
Specifications" column. If
resistance is low - -

Solder short in
Handpiece.

Re move Short.
Replace Heater
Asse mbly & Fuse1.

S hort ed H eat er Replace Heater

Asse mbly & Fuse.

No Ground
on Tip.

Check resistance - Pin 4 to a
NEW Tip. Resistance should
be less than 2 ohms. If not - -

Oxidation in
Heater Bore.

Clean Heater Bore
using appropriate wire
brush.

Defective Heater Replace Heater

Assembly.

Connector

Plug Pinouts

20

Corrective Maintenance

SODR-Pen Heater Replacement

Insure that the installed heater assembly of your Sodr-P en handpiece is defective by
referring to Table III. If replacement becomes necessary, follow the procedure below.

1. Disconnect the Sodr-Pen from the power source.

2. Unscrew, remove and discard the Heater Retaining Nut. If the Heater
Retaining Nut does not unscrew easily, gently apply a back and forth side
force to the tip end of the Heater Assembly to release the heat seal created
after extended use.

3. Loosen the white plastic Strain Relief Screw (if present) located at the
rear of the Handle. Gently push the Cable Assembly through the Sodr­Pen (toward the Heater Assembly) to expose the Insulator. Slide the
Insulator back (toward the Handle end) to expose the 5 lead wire
connections between the Heater Assembly and the Cable Assembly.

4. Disconnect the 5 Heater Assembly leads. Remove the Insulator from the
Cable Assembly leads. Discard the old Heater Assembly and Insulator.

5. Feed the Cable Assembl y leads back through the replacement Insulator
with the notched end of the Insulator facing the Heater Assembly end.
Feed the 2 Blue leads through the holes marked with the letter "B" and
the 2 White leads through the holes marked "W". Feed the Green lead
through the unmarked hole. Insure that the Cable Assembl y leads do not
become crossed with each other.

Heat er To Cable Assembly Connecti ons

He ater Leads Cable Assembly Leads
2 Blue Leads

To

2 Blue Leads
2 Tan L eads To 2 White Leads
Bare Lead

To

Green Lead

21

Replacement Parts

Table IV. SP-1A/SP-2A Par ts

Item

#

Description Part Number

1 SP- 1A S odr - Pen Handpiece 6025- 0013-P1
2 SP-1A Heater Assem bly ( 37 Wat t) 6010- 0085-P1
3 SP- 2A Sodr-Pen Handpiece 6025-0014-P1
4 SP-2A Heater Assem bly ( 54 Wat t) 6010- 0086-P1
5 Heater Set Screw 1348-0547- P10

6. Plug the wire leads of the replacement Heater Assembly into the wire
leads of the Cable Assembly using the table shown in the illustration as a
reference. Match like colored wires. Connect the Green Cable Assembly
lead to the non-insulated Heater Assembly lead. Insure that the leads do
not become crossed with each other.

7. Slide the Insulator over the lead connections and against the back of the
heater housing. The metal tab on the heater housing (Heater Tab) must
slide in the Wide Notch (see illustration) on the end of the Insulator.

8. Gently pull the Cable Assembly back through the handpiece until the
Heater Assembly rests against the plastic Handle. Gently twist the Heater
Assembly (if necessary) to slide the narrow notches on the Insulator
between the tabs on the inside of the Handle.

9. Place the new metal Compression Spring over the end of the Heater
Assembly .

10. Install the new Heater Retaining Nut to secure the Heater Assembly and
rubber Compression Spring to the Handle.

11. Tighten the white plastic Strain Relief Screw (if present) located at the
rear of the Handle until the screw is flush with or just above the Handle
surface to secure the cable assembly in position. A replacement screw is
supplied in the event that replacement becomes necessary.

12. Perform the Burn In procedure (listed on the Red tag packaged with the
replacement Heater Assembly) to insure long life.

SP-1A/SP-2A Handpieces

Listed are the replacement parts which may be ordered through your local authorized
PACE distri butor. To obtain any other replacement parts, contact PACE Customer
Service directly at Tel. #[phone] or FAX #[phone].

22

Replacement Parts

ACCESSORY TRAY I TEM S (PACKI NG L IST)

QUANTITY SUP PLIED

-SP SYSTEM S

(with SP-2A

Sodr-Pen)

-TT SYSTEMS

(with TT-65

ThermoTweez)

-PS SYSTEM S

(with PS 50

Prep-Set)

ITEM

NO.

DESCRIPTION

PART

NUMBER

ST 20A

ST 20AJ

ST 20AE

ST 20A

ST 20AJ

ST 20 AE

ST 20A

ST 20AJ

ST 20AE

1 SP-2A Sodr- Pen (54 W at t s )

6025- 0014-P1

1 1 0 0 0 0

2 TT- 65 Therm oTweez Handpiece

7025- 0001-P1

0 0 1 1 0 0

3 PS 50 Prep- S et

7014- 0003

0 0 0 0 1 1

4 Power Suppl y Cor d, 100 & 115 VAC

1332- 0094

1 0 1 0 1 0

5 Power Supply Cord , 230 VAC

1332- 0093

0 1 0 1 0 1

6 SP Tip & Tool Stand

6019- 0043

1 1 0 0 0 0

7 TT Tip & Tool St and

6019- 0046

0 0 1 1 0 0

8

Sponge f or Tip & Tool St and 4021- 0008-P3

1 1 1 1 0 0

9 W ire Br ush, 3/16 inch diam et er

1127- 0014-P5

1 1 1 1 0 0

10 Tip Tool

1100-0206

1 1 1 1 0 0

11

Hex Wr enc h (Temp. Locking Key)

1 1 1 1 1 1

12

Rubber Foot

4 4 4 4 0 0

13

Screw, 8-32 x 1/ 2" Long

2 2 2 2 0 0

14

Thum b Nut , Knurled, 8-3 2

2 2 2 2 0 0

Table V. Accessor y Tray Items

Accessory Tray Items

Listed below is a packing list of the items shipped with the system. This list is
current at the time of publication of this manual.

23

Optional & Accessory Items

Listed below are available optional and accessory items which may be through your
local authorized PACE distri butor.

OPTIONAL & ACCESSORY ITEMS

ITEM NO. DESCRIPTION PART NUMBER

1 Fuse,

1.0 Amp Time Lag (PPS 15A) 1159-02 46

0.5 Amp Time Lag (PPS 15AE) 1159-0213

1.25 Amp Time Lag (PPS 15AJ ) 1159-02 17

2 SP-1A Sodr-Pen (37 Wat t s)

6025- 0013-P1

3

Wire Br ush, 1/ 8 inch diamet er 1127- 0006-P5

4

AdapTip Kit (for SP-2A S odr - Pen) 1360- 0083-P1

5

Tip & Temper ature Selection Syst em Booklet.

5050-02 51

6

V-SX Vacuum Opt ion (solder ext r action) 6993-01 31

7 SX Tip & Tool Stand (for air handpieces)

6019-00 44

8 Tip Redi-Rak

6021-00 07

9 SMD Tip Accessory Kit

6993-01 70

10

Replacem ent F iber Filler 1127- 0013 - P2

11

Replacement Sponge Fille r 4021- 0006-P5

12 Cor d Retention System

6018-00 90

Table VI . Optional And Accessory Items

24

25

MANUAL IMPROVEMENT & COMMENT FORM

Instructions

1.

2.

3.

Duplicate this form and submit comments on the copy. Keep the original to make future
comments.
Please com plete all request ed i nf or m ation.
Submit completed form to:

PACE Incor porated
Applicati ons Engine er ing Fax: ( 301) 604-8782
9893 Br ewers Court

Laur el, MD 20723-1990 U.S. A.
Docum ent # 5050-0355 Rev. C Dat e of Submission:
Nat ur e of Change (Ide ntif y page and parag r aph and in c lude proposed rewrit e, if possible.)

Reason f or Recommendation

Name of Submit t er : Com pany or Organization:

Mailing Address: Telephone: ( )

Voice:

Fax:

Thank you for your c om m ent s. They are great ly appr eciated!