Pace ST 25 User manual

WORLDWIDE
Operation and Maintenance Manual for the
ST 25 & ST 35 Soldering Systems
P/N 5050-0452
Rev D

©2001 PACE Inc., Laurel, Maryland Page 2 of 14
All Rights Reserved
TITLE TEST .............................................................................................................. PAGE
General Information
Introduction .......................................................................................................... 3
Specifications....................................................................................................... 3
Parts Identification ............................................................................................... 3
Safety
Safety Guidelines, English Language.................................................................. 4
Safety Guidelines, French Language .................................................................. 4
Safety Guidelines, German Language ................................................................ 5
Safety Guidelines, Italian Language.................................................................... 5
Safety Guidelines, Portuguese Language........................................................... 6
Safety Guidelines, Spanish Language ................................................................ 6
Safety Guidelines, Swedish Language................................................................ 7
System Set-Up
Mounting Options.................................................................................................... 8
Tip & Tool Stand ..................................................................................................... 8
Handpiece Connection............................................................................................ 8
System Power Up.......................................................................................................... 9
Heater Burn In ............................................................................................................... 9
Tip Installation ............................................................................................................... 9
Operation
Variable Temperature Control ............................................................................ 10
Temperature Dial Lock ....................................................................................... 10
LED Operation .................................................................................................... 10
Temperature Dial Adjustment....................................................................................... 10
Corrective Maintenance
Power Source ..................................................................................................... 11
Handpieces......................................................................................................... 11
PS-90 Heater Replacement................................................................................ 12
Packing List/Spare Parts .............................................................................................. 12
Service.......................................................................................................................... 13
Limited Warranty Form................................................................................................. 13
Contact Information ...................................................................................................... 14

©2001 PACE Inc., Laurel, Maryland Page 3 of 14
All Rights Reserved
Introduction
Thank you for purchasing the PACE model ST 25 or ST 35 Digital Soldering System. This manual will
provide you with the information necessary to properly set up, operate and maintain the ST 25 or ST 35.
The ST 25 and ST 35 systems are available in either 115 VAC or 230 VAC versions, which incorporates a
highly responsive SensaTemp (closed loop) control system providing up to 80 Watts of total power to a
single output channel. The 230 VAC version system bears the CE Conformity Marking, which assures
the user that it conforms to EMC 89/336/EEC.
The 115 VAC version systems conform to FCC Emission Control Standard, Title 47, Subpart B, Class A.
This standard is designed to provide reasonable protection against harmful interference when the
equipment is operated in a commercial environment.
Specifications
System Power Source Power Requirements
ST 25 or ST 35 Operates on 97-127 VAC, 50/60Hz, 90 Watts maximum at 115 VAC,
60Hz
ST 25E or ST 35E Operates on 197-253 VAC 50/60Hz, 80 Watts maximum at 230 VAC,
50Hz
Temperature Specifications
Handpieces Tip Temperature Range: 204 to 455°C (400 to 850°F) nominal.
Temperature Stability: ±1.1°C (±2°F) at idle from set tip temp.
NOTE: Actual minimum and maximum Operating Tip Temperatures may vary depending on
Handpiece, Tip Selection and application.
EOS/ESD Specifications
The specifications shown below apply except on "Soft Ground Systems" which have a 1meg 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 2 ohms.
AC Leakage: Less than 2 Millivolts RMS from 50Hz to 10MHz.
Transient Level: Less than 500mV peak, out to 100MHz.
Parts Identification (ST 25 shown)
Power Receptacle
Front Panel LED
Temperature Selection Dial
Power Switch
AC Power Receptacle/Fuse Holder
Fuse
Earth Ground Receptacle (ST 25E, ST 35 and ST 35E only)

©2001 PACE Inc., Laurel, Maryland Page 4 of 14
All Rights Reserved
English Language Safety Guidelines
The following are safety precautions that personnel must understand and follow when using or servicing
this product.
1. POTENTIAL SHOCK HAZARD - Repair procedures on PACE products should be performed
by Qualified Service Personnel only. Line voltage parts may be exposed when the
equipment is disassembled. Service personnel must avoid contact with these parts when
troubleshooting the product.
2. To prevent personnel injury, adhere to safety guidelines in accordance with OSHA and other
applicable safety standards.
3. SensaTemp handpiece heaters and installed tips are hot when the handpiece is powered on
and for a period of time after power off. DO NOT touch either the heater or the tip. Severe
burns may result.
4. PACE Tip & Tool Stands and handpiece cubbies are designed specifically for use with the
associated handpiece and houses it in a manner that protects the user from accidental burns.
Always store the handpiece in its holder. Be sure to place the handpiece in its holder after
use and allow for cooling before storing.
5. Always use PACE systems 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.
6. Exercise proper precautions when using chemicals (e.g., solder paste). Refer to the Material
Safety Data Sheet (MSDS) supplied with each chemical and adhere to all safety precautions
recommended by the manufacturer.
Directives de Sécurité, Française Langue
Les précautions suivantes, sont celles que le personnel doit comprendre et suivre lorsqu'il utilise, effectue
la maintenance ou se sert d'un produit PACE.
1. Danger potentiel de choc èlectrique - Les procédures de réparation sur les produits PACE
doivent être effectuées seulement par du personnel qualifié. Des parties de l'équipement
désassemblées peuvent être sous tension. Le personnel de maintenance doit éviter tout
contact avec ces parties en réparant le produit.
2. Pour prévenir tout préjudice, le personnel adhère au guide de sécurité en accord avec OSHA
(équivalent à des normes françaises de sécurité) et d'autres standards de sécurité applicable.
3. La mise sous tension des outils SensaTemp comporte des éléments chauffants (buse). Ces
derniers, gardent la chaleur même après la mise hors tension pendant un certain temps. Ne
pas toucher les parties chaudes aux extrémités des outils. Des brûlures sévères peuvent en
résulter.
4. Les outils PACE et leurs pannes ainsi que le support sont dessinés de manière spécifique
afin de protéger l'utilisateur/opérateur de brûlures accidentelles. Reposer toujours les outils
après chaque utilisation dans leurs étuis/supports afin de permettre leur refroidissement.
5. Utiliser toujours les stations Pace dans unlieu bien ventilé. Des extracteurs de fumée Pace
sont hautement recommandés pour protéger votre personnel des vapeurs de soudure/flux.
6. Prenez les mesures nécessaires quand vous utilisez des produits (ex: solder paste) chimiques.
Reportez-vous au document (fiche technique/sécurité) du fabricant fourni avec chaque produit.
Respectez toutes les procédures de sécurité recommandées par le constructeur.

©2001 PACE Inc., Laurel, Maryland Page 5 of 14
All Rights Reserved
Sicherheit Korrekturlinien, Deutsche Sprache
Die nachfolgenden Sicherheitsvorschriften sollten vom Bedien- un Servicepersonal verstanden und
befolgt werden.
1. Entladung spannungsfuehrender Teile - Reparaturen an PACE Produkten sollten nur von
qualifizierten Personal durchgefuehrt werden. Spannungsfuehrende Teile koennen sich bei
gezogenen Netzstecker entladen. Servicepersonal muss den Kontakt dieser Teile vermeiden.
2. Um moegliche Gefahren fuer Personen auszuschliessen, muessen alle
Sicherheitsvorschriften in Uebereinstimmung mit OSHA und anderen anwendbaren
Sicherheitsstandards eingehalten werden.
3. Angeschlossene SensaTemp Heizelemente von Handwerkzeugen und installierte
Loetspitzen sind heiss wenn das System eingeschaltet ist oder erst vor kurzer Zeit
ausgeschaltet wurde. Heizelement und Loetspitze nicht beruehren. Verbrennungsgefahr.
4. PACE Tip & Tool und andere Handwerkzeugablagen sind so konstruiert, dass ein
versehentliches Beruehren des dazugehoerendes Handwerkzeuges vermieden wird.
Bewahren Sie das Handwerkzeug nach Gebrauch stets in der Ablage auf. Bevor das
Handwerkzeug an einem anderen Ort gelagert werden muss, lassen Sie es in der
Werkzeugablage vollstaendig abkuehlen.
5. Benutze PACE Systeme nur in gut beluefteten Raeumen. Ein Loetrauchabsaugsystem, wie
es z.B. von PACE erhaeltlich ist, hilft Bedienpersonen von den Gefahren von Loetrauch zu
schuetzen.
6. Wenn Chemikalien (z.B.: Lotpaste) verwendet werden, muessen alle die in den
Sicherheitsdatenblaettern des Herstellers ausgewiesenen Sicherheitsvorschriften eingehalten
werden.
Misure di Sicurezza, Italiana Lingua
Le seguenti instruzioni sono misure di sicurezza che il personale deve comprendere e seguire quando
utilizza o ripara I prodotti PACE.
1. EVENTUALI RISCHI DI SHOCK ELETTRICO- Si consiglia di far eseguire le operazioni
di riparazione dei prodotti PACE, da un servizio di personale qualificato. Quando la
stazione non é assemblata le parti sottoposte alla tensione di linea potrebbero essere
scoperte. Il personale deve evitare il contatto con queste parti durante manutenzione del
prodotto.
2. Per evitare eventuali pericoli al personale, attenersi alle norme di sicurezza previste dalla
guida, in conformitá all’OSHA e agli altri Standard di Sicurezza applicabili.
3. Le resistenze PACE Sensatemp e le punte installate sono calde quando la stazione é
accesa e per un periodo successivo allo spegnimento. Non toccare la resistenza e la
punta. Puó comportare gravi ustioni.
4. I supporti PACE sono specificamente costruiti insieme alla corrispondente impugnatura e
progettati per un uso che protegge gli utenti da ustioni accidentali. Mettere sempre
l’impugnatura nel propio supporto dopo l’utilizzo e lasciarla raffredare prima di riporla.
5. Utilizzare sempre I stazioni PACE in una zona be aerata per proteggere il personale dai
fumi. É fortemente raccomandato un sistema di aspirazione (dei fumi) come quello
disposta dalla PACE.
6. Usare precauzioni quando si utilizzano sotanze chimiche (es. Pasta di stagno). Fare
riferimento al Material Safety Data Sheet (MSDS) fornita con ogni sostanza chimica e seguire
tutte le misure di sicurezza raccomandate dal fabbricante.

©2001 PACE Inc., Laurel, Maryland Page 6 of 14
All Rights Reserved
Guidelines de Segurança, Portuguese Lingua
Segeum-se precauções de segurança que os operadores devem compreender e seguir ao utilizar ou
reparar produtos PACE.
1. Perigo de choque eléctrico - Os procedimentos de reparação em produtos PACE, devem ser
apenas efectuados por pessoal qualificado. Linhas de alimentação podem ficar expostas ao
desmontar o equipamento. Pessoal de reparação deve evitar o contacto com essas partes ao
reparar o produto.
2. Para evitar danos pessoais, siga as normas de segurança OSHA ou outras normas aplicáveis.
3. Resistencias de aquecimento dos ferros e as pontas instaladas estão quentesquando o ferro
está alimentado, e mesmo durante algum tempo após ser desligado. NUNCA TOCAR nem na
resistencia de aquecimento nem na ponta. Pode resultar em queimaduras severas.
4. Os suportes para pontas e ferros da PACE, foram concebidos para uso especifico, e para
proteger o operador de queimaduras acidentais. Coloque sempre os ferros nos respectivos
suportes. Tenha a certeza de colocar sempre o ferro no respectivo suporte após cada utilização
e deixe-o arrefecer antes de o guardar.
5. Utilize sempre os sistemas da PACE em locais bem ventilados. Um Sistema de extracção de
fumos, como os Sistemas disponiveis na PACE, são altamente recomendados para a protecção
dos utilizadores contra os fumos produzidos pela solda e fluxo.
6. Tenha precauções apropriadas ao utilizar produtos quimicos (ex. pasta de soldar). Lêr sempre
atentamente os normas de segurança fornecidas com cada produto químico e siga sempre todas
as precauções de segurança recomendadas pelo fabricante.
Guias de Consulta de Seguridad, Espãnol Lenguaje
Lo siguiente es precauciones de seguridad que el personal debe entender y debe seguir al usar o reparar
productos de PACE.
1. RIESGO de SHOCK POTENCIAL - Los procedimientos de la Reparación en productos de
PACE sólo deben ser realizados por Personal de Servicio Calificado. Pueden exponerse
partes de voltaje de línea cuando el equipo se desmonta. El personal de servicio debe evitar
contacto con estas partes al arreglar el producto.
2. Para prevenir lesión del personal, adhiera a las reglas de seguridad de acuerdo con OSHA y
otras normas de seguridad aplicables.
3. Las herramientas SensaTemp tienen sus calentadores y las puntas instaladas calientes
cuando la herramienta esta encendida y por un periodo de tiempo después de apagar el
equipo. No toque el calentador o la punta. Las quemaduras severas pueden resultar.
4. El Soporte de punta y Herramienta PACE se diseñan específicamente para el uso con las
herramientas asociadas y las almacena de una manera que protege al usuario de las
quemaduras accidentales. Siempre guarde la herramienta en su soporte. Esté seguro de
poner la herramienta en su soporte después del uso y permita que la herramienta enfríe
antes de guardar.
5. Siempre use sistemas de PACE en una área bien ventilada. Un sistema de extraccíon de
humo como esos disponibles de PACE se recomiendan para ayudar a protejer al personal
contra los humos de flujo de soldadura.
6. Ejercicie las precauciones apropiadas al usar químicos (ej., pasta de la soldadura). Refiérase a
la Hoja de Datos de Seguridad de Material (MSDS) proporcionadó con cada químico y adhiere a
todas las precauciones de seguridad recomendadas por el fabricante.

©2001 PACE Inc., Laurel, Maryland Page 7 of 14
All Rights Reserved
Säkerhetsföreskrifter, Svenska
Följande säkerhetsföreskrifter måste förstås och följas av personal som använder eller utför service på
PACE produkter.
1. RISK FÖR STRÖMSTÖT - Service / Reparation av PACE produkter får endast utföras av
aktoriserad service personal. Strömförande delar kan kommas åt när produkten är
isärplockad. Iaktag aksamhet när felsökning görs för att undvika strömstötar.
2. För att undvika personskada rekommenderas att OSHA eller andra liknande arbetssäkerhets
standarder följs.
3. SensaTemp verktygselement och installerade spetsar är heta när strömmen är påslagen och
en tid efter att strömmen slagits av. RÖR EJ element eller spets. Risk för brännskador!
4. PACE Spets och Verktygshållare är speciellt utformade för att passa PACE respektive
verktyg så att risken för brännskador kan undvikas. När verktyget ej används bör det alltid
förvaras i sin hållare.
5. Tillse att ventilationen är god där PACE System används. Ett lödröksutsug system som t.ex.
PACE tillhandahåller rekommenderas för att skydda användaren för giftig lödrök.
6. Tillse att gällande säkerhetsföreskrifter följs vid användning av kemikalier, t.ex. lodpasta.Se
säkerhetsdatabladen som medföljer kemikalierna och följ de rekommenderade
säkerhetsföreskrifterna från respektive tillverkare.

©2001 PACE Inc., Laurel, Maryland Page 8 of 14
All Rights Reserved
System Set-Up
Set up the ST 25 or ST 35 system using the following steps and associated drawings.
1. Store the shipping container in a convenient location. Reuse of these
containers will prevent damage if you store or ship your system.
2. Place the Power Switch in the “OFF” or “0” position.
Mounting Options
The ST 25 and ST 35 can be placed directly on a work bench and can be stacked if more than one
system is used. The ST 35 can also be mounted under a workbench or shelf to conserve space. To
mount the system in this way:
1. Mount the bracket in the desired location (fasteners not
supplied).
2. Insert the 2 Mounting Screws (head first) into the power
source mounting slots.
3. Place the washers over the screws.
4. Fit the power source between the bracket’s support arms
and place the screws into the slots on the support arms.
5. Place the nut on the screw and tighten by hand.
6. Angle the power source so the operator can see the display
easily.
7. Tighten the nuts with a wrench or pliers.
Tip & Tool Stand
The Tip & Tool Stand can be mounted to the power source. If the system will be placed on the
workbench, this is recommended. If the ST 35 is to be mounted under the workbench or shelf, the
Tip & Tool Stand should not be mounted to the power source.
1. To attach the stand to the power source:
a) Insert the 2 Mounting Screws (head first) into the power
source mounting slots (plastic case shown). Slide the
screws toward rear of the power source.
b) Place the Tip & Tool Stand beside the power source.
Insert ends of the 2 Mounting Screws into the 2 Tip &
Tool Stand mounting holes as shown.
c) Install a Thumb Nut onto the end of each Mounting
Screw and tighten Thumb Nuts.
2. Place the handpiece into its Tip & Tool Stand.
Handpiece Connection
Connect the handpiece connector plug into the Power Receptacle 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.
System Power Up
1. Insert the female end of the power cord into the AC Power Receptacle on the rear panel of
the power source.

©2001 PACE Inc., Laurel, Maryland Page 9 of 14
All Rights Reserved
2. Plug the prong end (male end) of the power cord into an appropriate 3 wire grounded AC
supply receptacle.
CAUTION: To insure operator and ESD/EOS safety, the AC power supply receptacle must be
checked for proper grounding before initial operation.
NOTE: Ensure that the system is placed in a well-ventilated area. Smoke will be generated
during the burn in cycle and while soldering. Fume extraction equipment is recommended
Burn In Procedure
Use the following instructions to perform the Heater Burn In procedure.
1. Place the Power Switch in the “OFF” (0) position.
2. Ensure that the handpiece is connected to the power source. If a plastic cap is present on
the heater assembly, remove it and discard. The cap is used for shipping purposes only.
Place the handpiece in the Tip & Tool Stand.
3. Turn on the power source.
4. Turn the Temperature dial to 315°C (600 °F) for 10 minutes.
5. Next, increase the temperature to 427°C (800°F) for 15 minutes.
6. Turn off the power source.
CAUTION: The heater will be hot at the conclusion of the Burn In procedure.
This procedure should be performed whenever a new handpiece or new heater is connected
to the system.
PS-70/PS-90 Tip Installation
For maximum productivity and proper fit, install tips into your soldering iron when the heater is hot.
CAUTION: To avoid burns or potential injury, always hold the handpiece with
the heater pointed at an angle up to prevent injury.
Installing PERMAGROUND Tips
1. PERMAGROUND Tips should be inserted into the heater with the tail
of the tip pointing towards the heater.
2. PERMAGROUND Tips can be used once the tip has been fully
inserted into the heater. The set screw is not required to hold the
PERMAGROUND Tip in the heater.
3. If proper Tip orientation is required, the set screw can be tightened to
hold the tip in place. Also, heat transfer will improve when the set
screw is used.
Installing Non-PERMAGROUND Tips
1. Insert the Tip fully into heater bore using the supplied Tip Tool.
2. Gently tighten the heater Set Screw.
3. Recheck the tip Set Screw periodically to insure that it remains
snug.
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 when non-
PERMAGROUND tips are used.
PERMA-
GROUND
Tip
Tip Tail
Heater

©2001 PACE Inc., Laurel, Maryland Page 10 of 14
All Rights Reserved
Operation
Variable Temperature Control
Adjust the Variable Temperature 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 to avoid accidental or unauthorized
changes of the temperature setting.
1. Adjust the Temp. Control Knob to the desired temperature setting.
2. Using the Temp. Locking Key (hex key supplied with system), tighten
the set screw on the Temp. Locking Ring closest to the front panel.
LED Operation
The Green colored LED on the power source front panel indicates System Status and Power
Receptacle output status (LED OFF, ON or Flashing).
LED Full On - Continuous power is being delivered 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 reached. 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 for a
short period of time when set temperature is reached and stabilizing or if the Variable
Temperature Control setting is decreased. If the LED never illuminates, check for a faulty
handpiece (see Corrective Maintenance section). Also, if no handpiece is connected to the
power source, the LED will not illuminate.
Temperature Dial Adjustment
The ST 35 system is tested for temperature accuracy at the factory and 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 Temperature selection
dial, perform the following procedure.
1. Install a tip with an embedded thermocouple into the handpiece connected to
the system. Tips with K type thermocouples are available from PACE.
2. Connect the thermocouple assembly to an 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 Variable Temperature Control to obtain a
stable tip temperature of 300°C (for PACE factory specifications) or the
temperature setting normally used by the operator.
If the temperature displayed on temperature meter is within ±15°C
(27°F), perform steps 4 thru 6 to obtain a precise reading. If the

©2001 PACE Inc., Laurel, Maryland Page 11 of 14
All Rights Reserved
temperature is off by more than ±15°C, the handpiece may require maintenance.
Recheck the temperature using a second handpiece.
4. Carefully lock the Variable Temperature Control in position by tightening the inner set
screw (closest to front panel).
5. Loosen the outer set screw on the Variable Temperature Control
knob (furthest from front panel) using the Temp. Locking Key
(hex key) supplied with the system. Position the knob with the
pointer aligned to match the temperature indicated on the
temperature meter. Secure the knob in position by tightening the
outer set screw.
6. Loosen the inner set screw to unlock the Variable Temperature
control if adjustment of operating tip temperature is desired.
Corrective Maintenance
Power Source
Most malfunctions are simple and easy to correct. Refer to Table 3.
Symptom Probable Cause Solution
No power to
system
Blown Fuse Check handpiece using table 4. Replace the fuse
(located in the AC Receptacle Fuse Holder) with
one of the same rated value (see Table 6, Spare
Parts)
Defective Heater See Table 4.Handpiece will
not heat Power Source
Malfunction
Contact PACE
Table 1: Power Source Corrective Maintenance
Handpieces
The following “Heater Assembly Checkout Procedures” (Table 2) is applicable to all PACE
SensaTemp handpieces used with the ST 25 or ST 35 system except for the TT-65 and DTP-80
handpieces. Refer to the applicable manuals for troubleshooting procedures pertinent to these
handpieces.
Perform the procedures with the handpiece heater at room temperature. If the heater is warm,
resistance readings will be different from those shown in Table 2. 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.
Problem Checkout Procedure Cause Solution
Check resistance: Pin 2 to
Pin 5. Refer to heater
specifications below if
resistance is high, see
Solution
Open Heater Replace Heater Assembly
Handpiece does not heat
Check resistance: Pin 3 to
Pin 6. If circuit reads open,
see Solution
Open Sensor Replace Heater Assembly
Handpiece Overheating Check Resistance: Pin 3 to
Pin 6. Resistance should
be 110 ohms. If resistance
is less than 105 Ohms, see
Solution
Shorted Sensor Replace Heater Assembly
Fuse blows when power
source is turned on
Check resistance: Pin 2 to
Pin 5. Refer to heater
specifications below if
resistance is low, see
Solution
Shorted Heater Replace Heater Assembly
and Fuse

©2001 PACE Inc., Laurel, Maryland Page 12 of 14
All Rights Reserved
Oxidation build-up in heater
Bore
Clean Heater Bore using
wire brush
No Ground on Tip Check resistance: Pin 4 to
a new tip. Resistance
should be less than 2 ohms,
if not see Solution Defective Heater Replace Heater Assembly
Heater Specifications: PS-90 = 8-10 ohms
PS-70 = 11.3-12.3 ohms
Connector Plug Pin-Outs
Table 2: Heater Assembly Diagnostic Procedures
PS-70/PS-90 Heater Replacement
Ensure that the installed heater of the PS-70/90 handpiece is defective by referring to Table 4 (Heater
Assembly Checkout Procedures). If replacement becomes necessary, perform the following
procedure to ensure optimum performance and maximize the life expectancy of the heater.
1. Allow the heater to cool.
2. Remove the Heater Retaining Nut.
3. Pull the Heater Assembly from the Handle. Discard
defective Heater Assembly.
4. Align the connector key on the handle end of the
replacement Heater Assembly with the keyway slot on
the handle.
5. Push the Heater Assembly fully into the handle.
6. Replace the Heater Retaining Nut and tighten by hand.
Packing List
Quantity Supplied
ST 25 or ST 35
with PS-70
ST 25 or ST 35
with PS-90 ST 25 TT
Item # Description Part Number ST 25
ST 35
ST 25E
ST 35E
ST 25
ST 35
ST 25E
ST 35E ST 25 ST 25E
1 System Power Supply ------ 1 1 1 1 1 1
2 PS-70 Handpiece Kit
(37W)
6993-0236-P1 0 0 1 1 0 0
3 PS-90 Handpiece Kit
(51W)
6993-0199-P1 1 1 0 0 0 0
4 TT-65 Handpiece (74W) 7025-0001 0 0 0 0 1 1
5 Power Cord, 115V 1332-0094 1 0 1 0 1 0
6 Power Cord, 230V 1332-0093 0 1 0 1 0 1
7 TT-65 Tip & Tool Stand ----- 0 0 0 0 1 1
8 ST TT Accessory Kit ----- 0 0 0 0 1 1
9 Tip Tool 1100-0206 1 1 1 1 1 1
10 Operations Manual 5050-0452 1 1 1 1 1 1
11 TT-65 Operation Manual 5050-0336 0 0 0 0 1 1
Table 3: Packing List
Spare Parts
Item # Description PACE Part Number
Fuse, 1.0 Amp Time Lag (ST 45 and ST 55) 1159-0246-P51
Fuse, 1.0 Amp Time Lag (ST 45E and ST 55E) 1159-0213-P5
2 PS-70 Heater, 21V, 37W 610-0128-P1
3 PS-90 Heater, 21V, 51W 6010-0095-P1

©2001 PACE Inc., Laurel, Maryland Page 13 of 14
All Rights Reserved
4 Retaining Nut for PS-70/PS-90 1410-0122-P5
5 Tip & Temperature Selection Chart 5050-0251
6 Replacement PCB Assembly 6020-0120-P1
Table 4: Spare Parts
Service
Please contact PACE or your local distributor for service and repair.
Warranty Information:
LIMITED WARRANTY
PACE warrants that this equipment will be free of defects in materials and workmanship for a period of
one (1) year from the date of receipt by original purchaser.
This warranty does not cover repair or replacement required as a result of misuse, mishandling or
improper storage. Failure to perform recommended routine maintenance, alterations or repairs made
other than in accordance with PACE’s directions, or removal or alteration of identification plates in any
way will void this warranty. This warranty is available only to the original purchaser, but the exclusions
and limitations therein apply to all persons and entities.
This warranty does not apply to consumable items, such as tips, filter elements, hoses, collection
chambers etc., except that heaters are normally warranted for a period of six (6) months from the date
of receipt by the original purchaser.
PACE MAKES NO OTHER WARRANTY, EXPRESSED OR IMPLIED, AND MAKES NO WARRANTY
OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
PACE will, at its option, repair or replace any defective equipment or parts at its facility or other
location approved by PACE at no charge to the user, or provide parts without charge for installation by
the user in the field at user’s expense and risk. User will be responsible for all costs of shipping
equipment to PACE or other warranty location for warranty service.
EXCEPT FOR THE REMEDY ABOVE DESCRIBED, UNLESS OTHERWISE REQUIRED BY
APPLICABLE LAW, PACE WILL HAVE NO OTHER OBLIGATION WITH REGARD TO ANY BREACH
OF WARRANTY OR OTHER CLAIM WITH RESPECT TO THE EQUIPMENT, OR LIABILITY FOR
ANY DIRECT, INDIRECT, CONSEQUENTIAL, OR INCIDENTAL LOSS OR DAMAGE CAUSED BY
OR OCCURRING IN CONNECTION WITH ANY OF THE EQUIPMENT.
Do NOT return defective equipment or parts to PACE without obtaining prior authorization.
Any warranty or other claim with respect to the equipment must be made in writing and delivered to
PACE (or local authorized PACE Distributor outside the U.S.) within a reasonable time of the expiration
date of this warranty. Sufficient evidence of purchase and date of receipt must also be included,
otherwise user’s rights under this warranty shall be deemed waived.

©2001 PACE Inc., Laurel, Maryland Page 14 of 14
All Rights Reserved
PACE, Incorporated retains the right to make changes to specifications contained herein at any time,
without notice.
The following are registered trademarks and/or service marks of PACE, Incorporated, Laurel,
Maryland, USA and may only be used to identify genuine PACE products or services.
Arm-Evac®, Flo-D-Sodr®, Mini-Wave®, PACE®, SensaTemp®, Snap-Vac®, SODRTEKSM, Sodr-X-
Tractor®, THERMO-DRIVE®, ThermoFlo®, ThermoJet®, ThermoTweeze®, TOOLNET®,VisiFilter®,
PERMAGROUNDTM, Tip-BriteTM, Auto-OffTM
Additional copies of this manual or other PACE literature may be obtained from:
www.paceworldwide.com
PACE USA PACE Europe
9893 Brewers Court Sherbourne House
Laurel, MD 20723 Sherbourne Drive
USA Tilbrook, Milton Keynes
MK7 8HX
United Kingdom
Tel: [phone] (44) 01908-277666
(888)-535-PACE
Fax: [phone] (44) 01908-277777