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10. STANDARD REPAIR TIME (UNIT) SCHEDULES

MODEL

10

20

30

40

Fixed

Variable

UC 18SD

Work Flow

Light Bar

Fuse (6.3 A)

60 min.

50

Case (A).(B)

 Set

Printed Circuit

Board Ass'y

Transformer

120V

Cord

General Assembly

Summary of Contents for UC 18SD

Page 1: ...TECHNICAL DATA AND SERVICE MANUAL CHARGER UC 18SD SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT LIST No F885 Jul 2003 U MODEL UC 18SD Hitachi Power Tools ...

Page 2: ...LES PROMOTION 3 6 1 Safety Instructions 3 6 2 Points Requiring Special Attention During Sales Promotion 4 7 REFERENCE MATERIAL 5 7 1 Structure 5 8 PRECAUTIONS IN DISASSEMBLY AND REASSEMBLY 5 8 1 Disassembly 5 8 2 Reassembly 6 8 3 Confirmation after Reassembly 6 9 TROUBLESHOOTING GUIDE 7 9 1 Failure During Charging 7 10 STANDARD REPAIR TIME UNIT SCHEDULES 10 Assembly Diagram for UC 18SD 11 ...

Page 3: ...o promote sales of our low cost cordless tools It is designed to charge the Hitachi type EB 1812S rechargeable battery 3 APPLICATIONS Charging of Hitachi 18 V rechargeable battery Applicable batteries EB 1812S 18 V 1200 mAh 3 terminal 4 SELLING POINTS Thermistor protects overcharging Red pilot lamp shows easy confirmation of charging state EB 1812S ...

Page 4: ...ity Voltage drop method Rectifying method Overcharging protection system Charging indication method Charging voltage Charging current Charging time at 20 C at 68 F 5 2 Comparisons with Similar Product 1 6 kg 3 5 lbs 10 C 40 C 50 F 104 F Product weight Operating temperature Model Applicable ambient temperature range Charging time Charging current Outer dimensions Product weight Charging voltage Cha...

Page 5: ... and the Charger If the Charger is used with voltage over and above that indicated on the unit it will not function properly 4 Charge at a temperature range of 10 C 40 C 50 F 104 F The Charger and storage batteries each contain a special charging circuit Be sure to instruct the customer to charge at a temperature range of 10 C 40 C 50 F 104 F In temperatures below 10 C 50 F even if the battery is ...

Page 6: ...rging varies from a few minutes to about 30 minutes depending on the length of time the battery was used and the ambient temperature 6 2 2 If the ambient temperature or power supply voltage is low charging time may be longer The charging time is greatly influenced by the ambient temperature and input power supply voltage The relationship between input power supply voltage and charging time is show...

Page 7: ...ded assembly diagram 8 1 Disassembly 1 Remove the four Screws Plastic Tie D4 x 20 5 and take off Case B 2 When the Transformer 120V 9 is lifted upward the Printed Circuit Board Ass y 4 and the Cord 10 can be removed together 3 To separate the Printed Circuit Board Ass y 4 Transformer 120V 9 and Cord 10 melt their soldered connections with a soldering iron at the points marked 1 2 3 4 and 5 in Fig ...

Page 8: ...8 F 2 Measure the insulation resistance and conduct a dielectric strength test Insulation resistance 10 megohms or more between the plug blade of cord and the nameplate or fastening screws on the case with DC 500 V megohm tester Dielectric strength test a Between the plug blade of the cord and the charging terminal blade b Between the plug blade of the cord and the nameplate or the fastening screw...

Page 9: ... between the and terminals Battery is defective Replace battery YES NO YES NO DC 0 V Defective Charger Is there continuity between the blades of the AC plug Is the fuse on the secondary side blown Is there a disconnected lead wire on the secondary side Printed circuit board is defective Replace printed circuit board YES NO YES YES YES NO NO NO Circuit break Is there a break in the cord Replace tra...

Page 10: ...tance between and S terminals of the warm battery 2 KΩ to 50 KΩ Charge at appropriate temperature 10 C 40 C 50 F 104 F Check the resistance between and S terminals of the warm battery with a tester Defective charger Disconnect AC plug from power supply and disassemble charger Are there any defective wiring connections Replace printed circuit board Printed circuit board is defective YES NO NO Batte...

Page 11: ...n of charging Is the heat generated by the battery or the charger Printed circuit board is defective Is the heat generated by the transformer Charger Replace printed circuit board Battery Warming of the battery in the final stage of charging is normal To Failure Mode B Replace battery Replace transformer YES YES NO NO ...

Page 12: ...10 10 STANDARD REPAIR TIME UNIT SCHEDULES MODEL 10 20 30 40 Fixed Variable UC 18SD Work Flow Light Bar Fuse 6 3 A 60 min 50 Case A B Set Printed Circuit Board Ass y Transformer 120V Cord General Assembly ...

Page 13: ... 11 ELECTRIC TOOL PARTS LIST LIST NO F885 CHARGER Model UC 18SD 2003 7 10 E1 Hitachi Power Tools 1 2 4 3 9 8 7 10 5 6 ...

Page 14: ...12 1 318 258 LIGHT BAR 1 2 322 187 CASE A B SET 1 3 320 682 FUSE 6 3A 250V 1 4 322 189 PRINTED CIRCUIT BOARD ASS Y 1 INCLUD 3 5 994 806 SCREW PLASTIC TIE D4X20 4 6 NAME PLATE 1 7 CAUTION LABEL 1 8 HITACHI LABEL 1 9 322 188 TRANSFORMER 120V 1 10 318 259 CORD 1 Printed in Japan 030710N ...

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