PACE ST 400 Service Manual

Operation and Maintenance Manual for the

SODRTEK

Radiant Pre-Heating System

P/N 5050-0540

ST 400

TITLE PAGE

General Information .......................................................................................................3

Introduction...........................................................................................................3

Specifications .......................................................................................................3

Physical Parameters ............................................................................................3

Parts Identification................................................................................................4

Safety.............................................................................................................................5

Safety Guidelines.................................................................................................5

Preheating Basics..........................................................................................................5

System Power Up ..........................................................................................................6

Operation........................................................................................................................6

LED Operation......................................................................................................6

Variable Temperature Control..............................................................................7

Corrective Maintenance.................................................................................................7

General Maintenance...........................................................................................7

Heater Replacement ............................................................................................7

Power Source......................................................................................................12

Packing List...................................................................................................................12

Spare Parts...................................................................................................................12

Service ..........................................................................................................................12

“SODRTEK by PACE” LIMITED WARRANTY STATEMENT.......................................13

Contact Information.......................................................................................................14

General Information

Introduction

Thank you for purchasing the PACE SODRTEK

model ST 400 Radiant Pre-Heating System. This manual will provide you with the information necessary to properly set up, operate and maintain the ST 400. Please read this manual thoroughly before using the unit.

The ST 400 unit is available in either the 115 VAC or 230 VAC version. The 115 VAC version system bears the FCC Conformity Marking which assures the user that it conforms to all the requirements of FCC Emission Control Standard, Title 47, Subpart B, Class A. The 230 VAC version system bears the CE Conformity Marking which assures the user that it conforms to all the requirements of (EU) directive EMC 89/336/EEC & 73/23/EEC.

Specifications

ST 400 - Operates on 97-127 VAC, 60 Hz (115 VAC version) 405 Watts maximum at 120 VAC, 60 Hz

ST 400E - Operates on 197-264 VAC, 50 Hz (230 VAC version) 405 Watts maximum at 230 VAC, 50 Hz

Heater Type: Radiant, 400 Watt (200 W x 2), closed loop, thermo-couple control Temperature: 100 ºF (37.78 ºC) – 400 ºF (204.44 ºC) Range

Physical Parameters

Dimensions: 7” (17.78 cm) W x 4.1” (10.41 cm) H x 12.5” (31.75 cm) D Unit Weight: 4.9 pounds (2.2 kg)

Parts Identification

Variable Temperature Control

Power LED

Power Switch

Temperature Indicator LED

Figure 1

AC Power Receptacle/Fuse Holder

Figure 2

Safety

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. 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.

4. 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.

5. Do not contact the Heater or its peripheral parts during operation.

6. Once turned off, let the unit cool completely before contacting.

7. After use, verify that the amber indicator lamp is off.

8. When using Fluxes, use fume extraction equipment or use in a well-ventilated area to minimize operator exposure to fumes.

Preheating Basics

Preheating of a printed circuit assembly is normally required in the repair process whenever any one or more of the following situations exist.

1. Epoxy glass substrate with 4 or more layers.

2. Substrate with large ground planes.

3. Substrate of ceramic, polyimide or other high heat dissipative material.

4. Printed circuit assembly with large metal heat sinks.

Preheating of assemblies such as those listed above will accomplish the following objectives.

1. Minimize thermal shock by elevating the assembly temperature to a level closer to solder melt temperature.

2. Minimize the heat cycle reflow time.

3. Overcome the heat dissipation characteristics of the assembly.

4. Minimize adjacent melts on densely populated assemblies.

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