Subject Chapter/Section Page - Hobart GPU-600 Operation And Maintenance Manual

OM-2010
SUBJECT
(1) Electronic Overvoltage/Overload Trip Circuit 2-1
(2) Electronically Controlled Current Limit
(3) Regulated DC Output Voltage
(4) Thermal Overload Trip
SECTION 2. OPERATION
1. General
2. Preparation for Operation
3. Operation Procedure
A. Input Control Functions
B. Output Control Functions
C. Voltmeter
D. Output Current Limit
SECTION 1. MAINTENANCE
1. General
2. Inspection
3. Lubrication
4. Parts Replacement
A. Minor electrical components
B. Major Electrical Components
Section 2. INSPECTION CHECK
1. General
2. Exterior Cables and Connections
A. Input and Output Cables
B. Cable Connections
3. Controls and Instruments
A. Voltmeter, Ammeter and Control Switches
B. Indicating Lights
(1) Power input and output lights
(2) Overload trip indicating light
C. Overload Thermostat
D. Starting Current Limit Potentiometer
E. Contactors
(1) Output Contactor, K2
(2) Input Contactor, K1
F. Control Transformer
4. Major Components Check and Repair
A. Main Power Transformer
B. Silicon Controlled Rectifier Assembly and
Flyback Diode
Table of Contents
Page 2
CHAPTER 3. SERVICING
AND REPAIR
CHAPTER/SECTION
2-1
2-1
2-1
2-2
2-2
2-2
2-2
2-2
2-2
2-2
2-2
3-1
3-1
3-1
3-1
3-1
3-1
3-1
3-2
3-2
3-2
3-2
3-2
3-2
3-2
3-2
3-2
3-2
3-2
3-2
3-2
3-2
3-2
3-2
3-2
3-2
3-2
PAGE
10
10
10
11
1
1
1
2
2
2
2
2
1
1
1
1
2
2
2]
1
1
1
1
1
1
1
1
1
2
2
2
4
4
4
4
4
4
5
April 10/89 Revised