Hobart GPU-400 Operation And Maintenance Manual
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Hobart GPU-400 Operation And Maintenance Manual

Hobart GPU-400 Operation And Maintenance Manual

3-phase solid state transformer-rectifiers
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OM-2003
043093 Revised
013192 Revised
Operation and Maintenance Manual
Solid State Transformer-Rectifiers
SPECIFICATION
S6732A-1
S6732A-2
S6732A-3
S6732A-4
S6732A-5
S6732B-1
S6732B-2
S6732B-3
S6732B-4
S6732B-5
S6732B-6
S7011-2
S6732C-1
S6732C-2
S6732C-3
S6732C-4
S6732C-5
S6732C-6
3-phase
Series 6732A, 6732B,
6732C and 7011A
Hobart Brothers Company
Ground Power Division
Troy, Ohio 45373
for
INPUT VOLTAGE
230 OR 460-V
220 OR 380 V
208/230/460-V
230/460/575-V
220 OR 380-V
230 OR 460-V
220 OR 380 V
208/230/460-V
230/460/575-V
220 OR 380-V
208/230/460-V
208/230/460-V
230 OR 460-V
220 OR 380 V
208/230/460-V
230/460/575-V
220 OR 380-V
208/230/460-V
U.S.A.
FREQUENCY MODEL
60 Hz
6T28-400CL
50 Hz
5T28-400CL
60 Hz
6T28-400CL
60 Hz
6T28-400CL
60 Hz
6T28-400CL
60 Hz
6T28-400CL
50 Hz
5T28-400CL
60 Hz
6T28-400CL
60 Hz
6T28-400CL
60 Hz
6T28-400CL
60 Hz
6T28-400CL
60 Hz
6T28-400CL
60 Hz
6T28-400CL
50 Hz
5T28-400CL
60 Hz
6T28-400CL
60 Hz
6T28-400CL
60 Hz
6T28-400CL
60 Hz
6T28-400CL

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Summary of Contents for Hobart GPU-400

  • Page 1 S6732C-2 220 OR 380 V 50 Hz 5T28-400CL S6732C-3 208/230/460-V 60 Hz 6T28-400CL S6732C-4 230/460/575-V 60 Hz 6T28-400CL S6732C-5 220 OR 380-V 60 Hz 6T28-400CL S6732C-6 208/230/460-V 60 Hz 6T28-400CL Hobart Brothers Company Ground Power Division Troy, Ohio 45373 U.S.A.

  • Page 2: Warranty

    In the event any component manufacturer has warranted its component to HOBART and will not deal directly with a first user then HOBART will cooperate with the first user in the presentation of a claim to such manufacturer. Under NO circumstances does HOBART assume any liability for any warranty claim against or warranty work done by or in behalf of any manufacturer of the foregoing components.

  • Page 3: Shock Prevention

    Safety Instructions and Warnings for Electrical Power Equipment WARNING ELECTRIC SHOCK can KILL. Do not touch live electrical parts. ELECTRIC ARC FLASH can injure eyes, burn skin, cause equipment damage, and ignite combustible material. DO NOT use power cables to break load and prevent tools from causing short circuits.

  • Page 4: Fire And Explosion Prevention

    Page 2 Sept 1/90 c. Service and Maintenance (1) This equipment must be maintained in good electrical and mechanical condition to avoid hazards stemming from disrepair. Report any equipment defect or safety hazard to the supervisor and discontinue use of the equipment until its safety has been assured. Repairs should be made by qualified personnel only.
  • Page 5 EMERGENCY FIRST AID Call physician immediately. Seek additional assistance. Use First Aid techniques recommended by American Red Cross until medical help arrives. IF BREATHING IS DIFFICULT, give oxygen, if available, and have victim lie down. FOR ELECTRICAL SHOCK, turn off power. Remove victim; if not breathing, begin artificial respiration, preferably mouth-to-mouth.
  • Page 6 Page 4 Sept 1/90 This page intentionally left blank. Page 4 Sept 1/90...

  • Page 7: Table Of Contents

    OM-2003 Table of Contents SUBJECT CHAPTER/SECTION PAGE Warning List Of Effective Pages Introduction 1. General 2. Scope 3. Purpose 4. Contents 5. Format A. Paragraphing and Outlining B. Page Numbering 6. How to Use the Manual A. General B. How to Locate Information (1) Table of Contents (2) List of Illustrations (3) References...
  • Page 8 OM-2003 Chapter 2. Description And Operation SUBJECT CHAPTER/SECTION PAGE Section 1. Description 1. General 2. Special Features 3. Optional Equipment 4. Detailed Description A. General B. Main Transformer C. Control Transformer D. Auxiliary Power Circuitry E. Output Contactor Circuitry F. Output Filter Circuitry G.
  • Page 9 OM-2003 Chapter 3. Servicing SUBJECT CHAPTER/SECTION PAGE Section 1. Maintenance 1. General 2. Inspection 3. Lubrication 4. Parts Replacement A. Minor electrical components B. Major Electrical Components Section 2. Inspection Check and Repair 1. General 2. Exterior Cables and Connections A.
  • Page 10 OM-2003 SUBJECT CHAPTER/SECTION PAGE Section 4. Troubleshooting 1. General 2. Troubleshooting A. Description B. Use of the Troubleshooting Chart 3. Equipment for Troubleshooting 4. Safety 5. Voltages of Interest 6. SCR Malfunction Instructions A. Normal SCR Malfunction Conditions B. Severe SCR Malfunction Conditions C.

  • Page 11: Subject Chapter/Section Page

    OM-2003 SUBJECT CHAPTER/SECTION PAGE Chapter 5. Optional Equipment Chapter 6. Manufacturer’s Literature Unusual Service Conditions April 30/91 Revised Table of Contents Page 5...
  • Page 12 OM-2003 This page intentionally left blank. Table of Contents April 30/91 Revised Page 6...

  • Page 13: General

    OM-2003 Introduction 1. General This Introduction is intended to give the reader a better understanding of how to use the manual properly. The manual can be very helpful to you if you will READ THIS INTRODUCTION FIRST. READ AND UNDERSTAND THE MANUAL BEFORE ATTEMPTING TO OPERATE, INSTALL, OR REPAIR THIS EQUIPMENT.

  • Page 14: Page Numbering

    OM-2003 b. Page Numbering Page numbers do not run consecutively throughout the manual. Each page is identified by the Chapter/Section number in which is appears, and by a page number within the Chapter/Section. Therefore, the first page in each Section is page 1. These identifying numbers appear in the lower, outside corner of each page.

  • Page 15: Service

    A special connector for the two output leads and the ground lead may be required when delivering power directly to an aircraft. 7. Service If you have any questions concerning your Hobart Ground Power Division equipment, you are invited to contact our service department by mail, telephone, or FAX. Write:...
  • Page 16 OM-2003 This page intentionally left blank. Introduction April 30/91 Revised Page 4...

  • Page 17: Section 1. Receipt Of Equipment

    Additional copies may be obtained at a small cost per copy by writing to: Hobart Brothers Company, Power Systems Group, Troy, Ohio Supply the owner’s manual no. (OM-2003) plus the model, specification, a serial numbers of your equipment.
  • Page 18 OM-2003 Installation Dimension Drawing (6732A/6732B Shown) Figure 1 Chap. 1-1 October 7/91 Revised Page 2...
  • Page 19 OM-2003 Front Panel of GPU-400 Figure 2 October 7/91 Revised Chap. 1-1 Page 3...
  • Page 20 OM-2003 This page intentionally left blank Chap. 1-1 October 7/91 Revised Page 4...

  • Page 21: Section 2. Installation

    OM-2003 Section 2. installation 1. Location For best operating characteristics and longest unit life, select an installation site that is not exposed to high humidity, dust, high ambient temperature, flooding, or corrosive agents. Moisture can condense on electrical components, causing corrosion or shorting of circuits. Dirt on components helps retain this moisture in addition to providing a conducting material.

  • Page 22: Grounding

    OM-2003 NOTE: After connecting the input cables, it is recommended that Hobart # 904021 urethane coating be sprayed on the connections at the fuse block to protect these connections from corrosion, fungus, and contamination. Spraying these connections will also reduce the potential for arcing from dirt and condensation.

  • Page 23: Output Leads

    OM-2003 CAUTION For safety and to assure adequate ventilation, be sure to replace cabinet top. 5. Output Leads Use your applicable electrical code to determine the minimum size output cable you need. If the cable voltage drop is too large with the minimum size cable, use a larger size cable. For example, the 90 C rated insulation, 4/0 cable in a 40 C ambient needed for 400 A DC may have to be larger for carrying that amperage over 200 feet with less than 4.5 Volts cable drop.
  • Page 24 OM-2003 This page intentionally left blank. Chap. 1-2 April 30/93 Revised Page 4...

  • Page 25: Chapter 2. Description And Operation

    Specifications and Capabilities Table in Figure 2. Unless a definite specification design or group of designs is to be described, this book will generally refer to this equipment as a GPU-400 power supply or power supply. See Figure 1 for a descriptive drawing showing the major components or sub- assemblies generally present in the design.
  • Page 26 3. Caster 9. Front Access Panel 4. Front Panel 10. Rear Access Door 5. Rear Panel 11. Lifting Yoke 6. Cable Hanger 12. Power Receptacle General Assembly of GPU-400 Power Supply (6732A/6732B Shown) Figure 1 October 7/91 Revised Page 2...

  • Page 27: Special Features

    OM-2003 h. Various internal components such as the main primary input fuses (12, Fig. 3), preload resistors (6, Fig. 3), main transformer (1, Fig. 3), filter capacitors (4, Fig. 3) with the bus bar (5, Fig. 3) at the front, filter reactor (7, Fig. 3), two (8, 9, Fig. 3) output contactors, control transformer (10, Fig. 3), and 1A control fuse block (15, Fig.
  • Page 28 OM-2003 Specifications and Capabilities Figure 2 October 7/91 Revised Page 4...

  • Page 29: Optional Equipment

    3. Optional Equipment The GPU-400 unit can be used to provide a 14-V DC output by installing a 14-V DC Option Kit (Part No. 489017) and an additional set of output cables. Also available is a Snow Shield Option Kit (Part No.

  • Page 30: Control Transformer

    OM-2003 c. Control Transformer (10, Fig.3) The small control transformer located on the rear of the inside baffle (3, Fig. 3) or lifting eye plate provides 115 V AC to the K1 (14, Fig. 3) input contactor coil, input contactor light A (12, Fig. 4), and S1 (11, Fig.
  • Page 31 8. Deleted 19. Fan Motor 9. 28 V-DC Contactor 20. Control Transformer Fuse 10. Control Transformer 21. Ammeter Shunt 11. Right Side Panel 22. Main Input Fuses Internal Components for GPU-400 (6732A/6732B Shown) Figure 3 October 7/91 Revised Page 7...

  • Page 32: Input Contactor Switch With Light

    OM-2003 The power supply is typically supplied with a 0 to 1600 Amp scale DC ammeter M1 (21, Fig. 4) which measures the millivolt drop across the R11 meter shunt (20, Fig. 3) that corresponds to the scale calibration. The scale range is so much more than the rated output because the R13 starting current potentiometer (8, Fig.
  • Page 33 5. 115 VAC Receptacle 13. Output Contactor Light (green) 6. MOV Surge Suppressor 14. Hole Plug 7. 115 VAC Weather Cover 15. F9 Fuse 8. R13 Start Level Control Front Panel Assembly, GPU-400 Figure 4 October 7/91 Revised Page 9...

  • Page 34: Solid State Printed Circuit Control Board

    OM-2003 If the output voltage is too high or if the output current is above the limit set by controls such as the R13 starting potentiometer, the “pcb” control delays the SCR turn-on signal to allow less SCR device conduction time for a correspondly lower output. Conversely, if the output voltage is too low, the SCR turn-on signal is delivered earlier in the possible conduction time for each SCR thereby allowing more power to be supplied because of the longer conduction time.
  • Page 35 OM-2003 1. Surge Suppressor (2) 6. Heat Sink Insulator (2) 2. SCR Heat Sink Assembly 7. Fuse Block, PC Board, Input 3. Overtemperature Thermostat, S5 8. Control Fuses, F2-F7 4. Fan Control Thermostat, S4 9. Flyback Diode, CR7 5. Metering Shunt, R12 SCR Heat Sink Assembly Figure 5 October 7/91 Revised...
  • Page 36 OM-2003 This page intentionally left blank. October 7/91 Revised Page 12...

  • Page 37: Section 2. Operation

    OM-2003 Section 2. Operation 1. General This section contains information for safe and efficient operation of the equipment. Operating instructions are presented in step-by-step sequence of procedures to be followed in supplying 28 V DC to an aircraft or similar load. WARNING Electric shock and fire can kill! Read and understand all operating instructions before attempting to operate the equipment.

  • Page 38: Voltmeter

    OM-2003 4. Voltmeter a. Verify on the M2 DC voltmeter (7, Fig. 1) that the DC output voltage level is correct. If not, turn off power supply, disconnect your load, and refer to Service, Chapter 3 for instructions. 5. Output Current Limit (1) If the DC ammeter continuously reads more than 400 A DC after start-up, immediately turn R13 current limit control (10, Fig.
  • Page 39 OM-2003 1. Front Panel 9. Red Overload Trip Light, DS2 2. Hole Plug 10. Start Current Potentiometer, R13 3. Control Fuse, F1 (15A) 11. Green Output Contactor Light, DS3 4. Input ON-OFF Switch, S1 12. Auxiliary Power Receptacle, 115V AC 5.
  • Page 40 OM-2003 This page intentionally left blank. April 30/91 Revised Page 4...

  • Page 41: Chapter 3. Servicing

    OM-2003 Chapter 3. Servicing Section 1. Maintenance 1. General To be certain the DC power supply set is ready for operation at all times, it must be inspected and maintained systematically so that defects may be discovered and corrected before they result in serious damage or failure of the equipment.

  • Page 42: Parts Replacement

    OM-2003 4. Parts Replacement a. Minor electrical components (1) Lamps and fuses are mortality type items which require simple periodic replacement. (2) Switches, meters, contactors and fan motor in the power supply fall into the category of parts which can be expected to fail at infrequent, irregular intervals. Instructions for repair and replacement of these parts are obvious.

  • Page 43: Section 2. Inspection Check And Repair

    OM-2003 Section 2. Inspection Check And Repair 1. General This section describes inspections and checks to be performed in conjunction with Inspection/Check Schedule, Figure 1. For satisfactory service, keep the power supply clean, dry, and well ventilated. At the prescribed intervals or more often as necessary, disconnect the power supply from the input power source and wipe and blow out all dirt and other foreign materials from the internal components, including the fan blades.

  • Page 44: Control Thermostats

    OM-2003 c. Control Thermostats The fan thermostat is open until operating temperature is reached. If the fan comes on immediately on a cold unit, the thermostat is probably shorted. If the fan fails to come on before the S5 overload thermostat trips open, the fan thermostat is faulty or the wiring is opened.
  • Page 45 OM-2003 DAILY 1 MONTH 3 MONTH 6 MONTH REQ’D. 8 HRS. 200 HRS. 600 HRS. 1200 HRS. * EXTERIOR CABLES Inspect equipment output cables Inspect AC input cables Check cable connections (internal) * CONTROLS AND INSTRUMENTS Check voltmeter functioning Check ammeter functioning Check fan thermostat operation Check indicating lights...

  • Page 46: Major Components Check And Repair

    OM-2003 4. Major Components Check and Repair a. Main Power Transformer No replacement parts are available for the main transformer. The replacment power transformer part number for your specification number is given in the replacement parts list in Chapter 4. This part and most of the major component parts can best be replaced at the factory or a factory authorized repair facility.

  • Page 47: Filter Choke And Capacitor Voltage Test

    OM-2003 If the flyback diode is shorted, (a rare occurrence) replace it with the same type of device (see Chapter 4 - Replacement Parts) taking care to torque the nut to the stud with 4.2 to 5.2 foot. pounds (5.7 to 7.05 newton meters). If the SCR bridge has one or more SCR devices showing a short circuit or low ohmmeter reading, it is recommended that the GPU400 power supply be sent to the factory or an authorized repair station for repair.
  • Page 48 OM-2003 (3) Check snubber printed circuit boards on the right side of the SCR heatsink assembly for shorted or broken leads and for signs of overheating. (4) Check the SCR gate leads for breaks or short circuits and correct any problems found before retesting.

  • Page 49: Section 3. Calibration And Test Of Pc Control Board

    Consideration should be given to returning the GPU-400 DC power supply to the factory or an authorized repair facility if your recheck of the GPU-400 does not find the cause of the difficulty. Field repair of the PC control board is not recommended.
  • Page 50 OM-2003 Printed Circuit Control Board Test Points Figure 1 April 30/91 Revised Page 2...
  • Page 51 OM-2003 TEST POINTS VOLTAGE & CIRCUIT DESCRIPTION OF TEST CONDITIONS 1. TP5 (10) to TP3 (8).* a. + 15 VDC +/- 5% . Test Checks (+) voltage regulator performed with open circuit output set by u4. and no load. 2. TP6 (11) to TP3 (8) a.
  • Page 52 OM-2003 TEST POINTS VOLTAGE & CIRCUIT DESCRIPTION OF TEST CONDITIONS 11. TP20 (26) to TP3 (8) a. 6 +/- .5 VDC. Test Checks R60 (14) overload performed with open current trip-out setting circuit. 12. TPL (27) to TP3 (8) a. .002V. Test performed with Checks trip-out light (Q10) and open circuit, not tripped.

  • Page 53: Section 4. Troubleshooting

    OM-2003 Section 4. Troubleshooting 1. General Troubleshooting is an orderly process of checking and eliminating possible causes of trouble until the exact cause of a trouble is found. As a rule, the best place to start looking for the cause of a trouble in a circuit is at the source of power.

  • Page 54: Equipment For Troubleshooting

    OM-2003 3. Equipment for Troubleshooting A good quality multi-scale voltohmmeter is the only instrument required for troubleshooting. However, for checking certain erratic, intermittent, or phase relationship problems, a good oscilloscope is strongly recommended. 4. Safety WARNING High voltage - electric shock and fire can kill! Exercise extreme care to avoid contact with high voltage leads and components which could cause serious shock and injury if touched when troubleshooting or operating the equipment.

  • Page 55: Scr Tests Or Checks

    OM-2003 c. SCR tests or checks (1) If nothing is found defective on the board the next step is to go to the SCRs. First of all an open gate or an open SCR cannot be checked with a VOM. If an SCR is not firing, the AC ripple current will increase across the filter capacitors, but no fuses blow.
  • Page 56 OM-2003 This page intentionally left blank. April 30/91 Revised Page 4...
  • Page 57 OM-2003 Trouble, Symptom, Condition Probable Cause Test, Check, And/or Remedy Machine Will Not Operate 1. Machine will not start. a. Input power turned OFF at Turn power ON at Remote Remote Disconnect Switch. Disconnect Switch. b. Blown fuse in Remote Replace blown fuse.
  • Page 58 OM-2003 Trouble, Symptom, Condition Probable Cause Test, Check, And/or Remedy Machine Will Not Operate (Continued) Contactor operates and blows c. Links on voltage Check appropriate voltage line fuses. changeover board changeover diagram in Chapter incorrectly connected. 8 for proper link positions. Make correction as necessary.
  • Page 59 OM-2003 Trouble, Symptom, Condition Probable Cause Test, Check, And/or Remedy Unit Trips Out After Starting (Continued) 1. Fan not operating (also see a. Blown fuse (F1) on front Replace fuse. See that power causes and remedies under panel of machine. receptacle is not overloaded.
  • Page 60 OM-2003 Trouble, Symptom, Condition Probable Cause Test, Check, And/or Remedy Power Supply On: No Voltage Output Unit on, but no output voltage. a. Protective circuit tripped. Determine and correct cause of trip. Then reset and restart unit. b. Component failure in Find the defective component protective circuit.

  • Page 61: Chapter 4. Illustrated Parts List

    The Illustrated Parts List identifies, describes, and illustrates main assemblies, subassemblies, and detail parts of two Series of GPU-400 SCR Phase controlled, DC power supplies manufactured by Ground Power Group, Hobart Brothers Company, Troy, Ohio. These power supplies are identified as Series 6732A, 6732B and 6732C.
  • Page 62 (2) “HOBART PART NUMBER” Column ALL part numbers appearing in this column are Hobart numbers. In all instances where the part is a purchased item, the vendor’s identifying five digit code and his part number will appear in the “NOMENCLATURE”...

  • Page 63: Section 2. Manufacturer's Codes

    OM-2003 Section 2. Manufacturer’s Codes 1. Explanation of Manufacturer’s (Vendor) Code List The following list is a compilation of vendor codes with names and addresses for suppliers of purchased parts listed in this publication. The codes are in accordance with the Federal Supply Codes for Manufacturer’s Cataloging Handbook H4-1, and are arranged in numerical order.
  • Page 64 OM-2003 Code Vendor’s Name And Address 72619 Amperex Electronic Corporation Dialight Div., 203 Harrison Place, Brooklyn, New York 11237 74545 Hubbell Harvey Inc., 584 Derby Milford Rd., Orange, CT 06477 74559 Carlingswitch Inc., 505 New Park Avenue, West Hartford, CT 06110 77166 Pass and Seymour, P.O.

  • Page 65: Section 3. Parts List

    OM-2003 Section 3. Parts List 1. Explanation of Parts List Arrangement The parts list is arranged so that the illustration will appear on a lefthand page and the applicable parts list will appear on the opposite righthand page. Unless the list is unusually long, the user will be able to look at the illustration and read the parts list without turning a page.
  • Page 66 OM-2003 General Assembly: GPU-400 (6732A/6732B Shown) Figure 1 April 30/93 Page 2...
  • Page 67 OM-2003 NOMENCLATURE UNITS FIGURE HOBART ITEM NO. PART NO. 1234567 ASSY S-6732A-1 GPU 400, 60-Hz, 230/460 VAC S-6732A-2 GPU 400, 50-Hz, 220/380 VAC S-6732A-3 GPU 400, 60-Hz, 208/230/460 VAC S-6732A-4 GPU 400, 60-Hz, 230/460/575 VAC S-6732A-5 GPU 400, 50-Hz, 220/380 VAC...
  • Page 68 OM-2003 NOMENCLATURE UNITS FIGURE HOBART ITEM NO. PART NO. 1234567 ASSY (CONTINUED) 487972 . TRANSFORMER, POWER 488078 . TRANSFORMER, POWER BEGKOR 488389 . TRANSFORMER, POWER CHLMP,S 489517 . TRANSFORMER, POWER 180068 . SHUNT, 1600A 60GHP-424 . CLAMP, OUTPUT CABLE 487952 .
  • Page 69 OM-2003 NOMENCLATURE UNITS FIGURE HOBART ITEM NO. PART NO. 1234567 ASSY (CONTINUED) 81B-1061 . LABEL, RECTIFIER SHOCK 83B-1079 . LABEL, ELECTRIC SHOCK 83A-1105 . LABEL, FUSES 489053 . PANEL, FRONT, ASSY. (For Details See Fig. 4) ACEFHKNPR 489056 . PANEL, FRONT, ASSY.
  • Page 70 OM-2003 Lifting Yoke Assembly Figure 2 April 30/93 Page 6...
  • Page 71 OM-2003 NOMENCLATURE UNITS FIGURE HOBART ITEM NO. PART NO. 1234567 ASSY 489055 YOKE, LIFTING ASSY, (For NHA See Fig. 1) 489058 YOKE, LIFTING ASSY, (For NHA See Fig. 1) BEGK 489054 YOKE, LIFTING ASSY,(For NHA See Fig. 1) 489523 YOKE, LIFTING ASSY, (For NHA See Fig. 1) 283511 YOKE, LIFTING ASSY, (For NHA See Fig.
  • Page 72 OM-2003 This page intentionally left blank April 30/93 Page 8...
  • Page 73 OM-2003 NOMENCLATURE UNITS FIGURE HOBART ITEM NO. PART NO. 1234567 ASSY YOKE, LIFTING ASSY. (CONTINUED) 489504 . . LABEL, STARTING CURRENT 487897 . . BAR, BUS CONTACTOR 405117-2 . . SCREW, #8-18 X 3/4, SF-TAP 286810-1 . . CONTACTOR, 28V 487898 .
  • Page 74 OM-2003 SCR Heat Sink Assembly Figure 3 April 30/93 Page 10...
  • Page 75 OM-2003 NOMENCLATURE UNITS FIGURE HOBART ITEM NO. PART NO. 1234567 ASSY 487930-1 RECTIFIER, SCR, ASSY. (For NHA See Fig. 1) 367634A-3 . . SUPPRESSOR, SURGE ASSY 487991 . .HEAT SINK, RECTIFIER WITH SCR DEVICES 404044-3 . . THERMOSTAT, OVERLOAD, 02907, V14604, NO.
  • Page 76 OM-2003 Front Panel Assembly Figure 4 April 30/93 Page 12...
  • Page 77 OM-2003 NOMENCLATURE UNITS FIGURE HOBART ITEM NO. PART NO. 1234567 ASSY 489053 PANEL, FRONT ASSY (For NHA See Fig. 1) ACEFHKNPR 489056 PANEL, FRONT ASSY. (For NHA See Fig. 1) 489522-1 PANEL, FRONT ASSY. (For NHA See Fig. 1) 181598 PANEL, FRONT ASSY.
  • Page 78 OM-2003 NOMENCLATURE UNITS FIGURE HOBART ITEM NO. PART NO. 1234567 ASSY PANEL, FRONT ASSY (CONTINUED) 404172-2 . . LENS, LIGHT PILOT, AMBER, V72619, NO. 26-1193-300 400613-6 . . LAMP, 120V, V71774, NO. 120MB 403247 . . LABEL, ELECTRIC SHOCK 400642-3 .

  • Page 79: Section 4. Numerical Index

    OM-2003 Section 4. Numerical Index 1.Explanation of Numerical Index The purpose of this index is to assist the user in finding the illustration and description of a part when the part number is known. Part numbers are arranged in alpha-numerical sequence. Thus, any part number beginning with the letter A would be located at or near the top of the index list.
  • Page 80 OM-2003 PART NUMBER FIGURE AND ITEM NUMBER PART NUMBER FIGURE AND ITEM NUMBER 402670 487930-1 402670 1-16 487952 3-11 402832-3 1-13 487972 4-31 403056-7 1-41 487979 4-26 403091-2 487991 4-27 403091-4 488025 4-10 403189 1-56 488071 4-15 403247 2-14 488071 1-25 403765-2 1-13...
  • Page 81 OM-2003 PART NUMBER FIGURE AND ITEM NUMBER PART NUMBER FIGURE AND ITEM NUMBER 1-23 AAW-1199 S-6732A-1 S-6732A-2 S-6732A-3 S-6732A-4 S-6732A-5 S-6732B-1 S-6732B-2 S-6732B-3 S-6732B-4 S-6732B-5 S-6732B-6 S-6732C-1 S-6732C-2 S-6732C-3 S-6732C-4 S-6732C-5 S-6732C-6 S-7011-2 1-21 W-10386-10 W-10386-10 1-21 W-10386-13 W-10386-13 1-21 W-10386-9 W-10386-9 W-11097-6...
  • Page 82 OM-2003 This page intentionally left blank. April 30/91 Revised Page 4...

  • Page 83: Chapter 5. Optional Equipment

    OM-2003 Chapter 5. Optional Equipment Optional Equipment available for use with GPU-400 is listed below. OPTION PART NO. MANUAL Kit, 14-V DC Option 283532 TO-156 Kit, Snow Shield Assembly 489518 TO-166 Kit, Riser 284389-1 TO-230 January 29/92 Revised Page 1...
  • Page 84 OM-2003 This page intentionally left blank. January 29/92 Revised Page 2...

  • Page 85: Chapter 6. Manufacturer's Literature

    OM-2003 Chapter 6. Manufacturer’s Literature DIAGRAMS FOR 6732A-1/6732B-1/6732C-1 489040 6732A-1/6732B-1/6732C-1 Schematic 489041 6732A-1/6732B-1 Connection 487987 6732A-1/6732B-1 Voltage Changeover 283528 6732C-1 Connection 283519 6732C-1 Voltage Changeover DIAGRAMS FOR 6732A-2/6732B-2/6732C-2 489043 6732A-2/6732B-2/6732C-2 Schematic 489042 6732A-2/6732B-2 Connection 488070 6732A-2/6732B-2 Voltage Changeover 283529 6732C-2 Connection 283520 6732C-2...
  • Page 86 OM-2003 DIAGRAMS FOR 6732B-6/6732C-6 489040 6732A-6/6732B-6/6732C-6 Schematic 489041 6732A-6/6732B-6 Connection 488388 6732A-6/6732B-6 Voltage Changeover 283528 6732C-6 Connection 283521 6732C-6 Voltage Changeover DIAGRAMS FOR 7011A-1/7011A-2 181597 7011A-1/7011A-2 Schematic 283527 7011A-1/7011A-2 Connection 283521 7011A-1/7011A-2 Voltage Changeover January 29/92 Revised Page 2...
  • Page 107 OM-2003 Unusual Service Conditions This information is a general guideline and cannot cover all possible conditions of equipment use. The specific local environments may be dependent upon conditions beyond the manufacturer’s control. The manufacturer should be consulted if any unusual conditions of use exist which may affect the physical condition or operation of the equipment.
  • Page 108 OM-2003 This page intentionally left blank. Unusual Service Conditions April 6/89 Revised Page 2...

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