CAT BUC 12 OPERATION PREVENTIVE MAINTENANCE TROUBLESHOOTING & SERVICE GUIDE A6474X256 – PDF DOWNLOAD

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CAT BUC 12 OPERATION PREVENTIVE MAINTENANCE TROUBLESHOOTING & SERVICE GUIDE A6474X256 – PDF DOWNLOAD

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CAT BUC 12 OPERATION PREVENTIVE MAINTENANCE TROUBLESHOOTING & SERVICE GUIDE A6474X256 – PDF DOWNLOAD

Language : English
Pages : 78
Downloadable : Yes
File Type : PDF

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CAT BUC 12 OPERATION PREVENTIVE MAINTENANCE TROUBLESHOOTING & SERVICE GUIDE A6474X256 – PDF DOWNLOAD

INTRODUCTION

• The BUCYRUS AMERICA INC. Model BUC Series Charger can be one of the most useful and safe machines found underground today, IF IT IS OPERATED CORRECTLY BY A PROPERLY TRAINED OPERATOR. Before operating the Model BUC SERIES Charger, study the drawings to become familiar with the controls and read the description of each control.

GENERAL

• The Model BUC SERIES Mine Battery Charger combines reliable, rugged components with unmatched circuit simplicity. The ferroresonant design of the Model BUC Series Charger eliminates the need for complicated control circuits and lowers the parts count.
• Three major components make up the circuit of the BUC Series; a ferroresonant step down transformer; silicon rectifiers, and timer.
• The magnetics are designed with an extra margin of capacity and have a Class H (180 degrees C) rating. Cores and windings are insulated with Class H Nomex material. The DuPont Nomex system uses a modified polyester baking varnish for further protection. This assures continued operation under the most severe, damp and dirty conditions present in the mine. The full wave rectifier includes conservatively rated silicon diodes and surge suppressors to provide a reliable d.c. output.
• The Model BUC Series regulates the d.c. output voltage to produce the proper charging curves for the battery. Its charge rate is dependent on the state of charge of your battery. A.C. line voltage compensation prevents any drift from the d.c. charging curve because of surges or drops in voltage. Basic design eliminates the need for voltage sensitive relays.
• The Model BUC Series automatically limits the output of the charger to approximately 125% of its rating. This prevents battery overheating, fuse blowing and assures long life for both battery and charger.
• The Model BUC Series is a completely automatic constant voltage charger. Each BUC Series is designed to operate on a specific type of battery with a specified number of cells.

TABLE OF CONTENTS:

CAT BUC 12 OPERATION PREVENTIVE MAINTENANCE TROUBLESHOOTING & SERVICE GUIDE A6474X256 – PDF DOWNLOAD

IMPORTANT SAFETY INSTRUCTIONS 1
MAJOR HAZARDS 3
SAFETY PRECAUTIONS AND GUIDELINES 5
OVERVIEW 5
LOCATION 5
PRE-START5
STARTING 5
MAINTAINANCE 6
PERSONAL PRECAUTIONS 6
THEORY OF OPERATION9
INTRODUCTION11
GENERAL11
OUTPUT RATINGS12
D C VOLTAGE 12
OUTPUT CURRENT12
REGULATION 12
INPUT RATINGS 12
A C VOLTAGE 12
INPUT FREQUENCY RANGE12
INPUT CURRENT & BATTERY CAPACITIES 12
TYPICAL ELECTRICAL SPECIFICATIONS13
STANDARD FEATURES13
INPUT PROTECTION 13
METERS13
OUTPUT PROTECTION13
ELECTRONIC TIMER 13
MOUNTING 13
OPTIONAL GROUND INTEGRITY13
ENVIROMENTAL RATINGS 14
OPERATING AMBIENT TEMPERATURES14
HUMIDITY 14
VENTILATION 14
INSTALLATION INFORMATION15
MINIMUM WIRE SIZES 15
ELECTRICAL CONNECTIONS AND FIELD WIRING 15
A C INPUT 15
D C OUTPUT 16
OPERATION 17
START UP (ELECTRONIC TIMER)17
ADJUSTMENTS 17
CIRCUIT OPERATION 17
TROUBLESHOOTING 19
GENERAL INSPECTION19
SERVICE INFORMATION 19
SYMPTOMS AND CAUSES20
GROUND AND SHORT CIRCUIT TEST 20
TROUBLESHOOTING AND REPLACING POWER SILICON DIODES 21
CHECKING CAPACITORS 21

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