Hitachi UC 18YFL, Technical Data And Service Manual

Page 1: ...AL DATA AND SERVICE MANUAL CHARGER UC 18YRL UC 18YFL SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT LIST Nos UC 18YRL G845 UC 18YFL G844 Nov 2006 U MODELS UC 18YRL UC 18YFL Hitachi Power Tools ...

Page 2: ...n 9 7 QUESTIONS AND ANSWERS ON MODELS UC 18YRL AND UC 18YFL 10 8 GENERAL PRECAUTIONS 13 8 1 Models UC 18YRL and UC 18YFL 13 8 2 Pilot Lamp Indications 13 9 PRECAUTIONS IN DISASSEMBLY AND REASSEMBLY 14 9 1 Disassembly 14 9 2 Reassembly 14 9 3 Confirmation after Reassembly 14 10 TROUBLESHOOTING GUIDE 15 10 1 Troubleshooting Based on Pilot Lamp Indications 15 10 2 Troubleshooting and Repair Procedure...

Page 3: ... 9 6 V 1 3 Ah EB 12S 12 V 1 3 Ah EB 914 9 6 V 1 4 Ah EB 1414 14 4 V 1 4 Ah EB 9B 9 6 V 2 0 Ah EB 12B 12 V 2 0 Ah EB 14B 14 4 V 2 0 Ah EB 1220BL 12 V 2 0 Ah EB 924 9 6 V 2 4 Ah EB 1224 12 V 2 4 Ah EB 1424 14 4 V 2 4 Ah Ni Cd batteries Ni MH batteries EB 1222HL 12 V 2 2 Ah EB 930H 9 6 V 3 0 Ah EB 1230H 12 V 3 0 Ah EB 1230HL 12 V 3 0 Ah EB 1430H 14 4 V 3 0 Ah EB 926H 9 6 V 2 6 Ah EB 1226H 12 V 2 6 Ah...

Page 4: ...Hitachi original charge control mechanism for longer battery life Easy to read visual display of charging status through constant lighting or flashing of red and green pilot lamps Fig 1 3 way overcharging protection systems for longer battery and charger life Capable of recharging both nickel cadmium Ni Cd nickel metal hydride Ni MH SUPER nickel metal hydride SUPER Ni MH and Lithium ion Li ion bat...

Page 5: ...le of recharging batteries with internal temperatures as high as 60 ûC Each nickel cadmium Ni Cd battery shown in Figs 2 and 3 incorporates a thermistor The Models UC 18YRL and UC 18YFL can continue recharging these batteries until the battery temperature reaches 60 ûC Note 1 Wiring diagrams for batteries are shown below The thermistor is an element to detect the battery temperature The 95 ûC ther...

Page 6: ... V 18 V terminal terminal S terminal Thermistor Discriminating resistor terminal terminal terminal S terminal terminal T 95 ûC thermal protector Thermistor Discriminating resistor Fig 6 Li ion batteries 14 4 V 18 V Terminal positions terminal T terminal terminal LS Discriminating resistor Thermistor 95ûC thermal protector Protective circuit board terminal L terminal LE terminal ...

Page 7: ...echarging is automatically stopped when the battery temperature reaches 60ûC in the case of the nickel cadmium Ni Cd batteries or 55ûC in the case of the nickel metal hydride Ni MH SUPER nickel metal hydride SUPER Ni MH and lithium ion Li ion batteries C Timer Should both the system dT dt system and the temperature sensor fail the timer automatically stops charging within 120 minutes from the begi...

Page 8: ...ry temperature ranges are shown in the table below Overheated batteries should be cooled to the specified temperature before recharging EB926H EB930H EB933X EB1226H EB1230H EB1230HL EB1230X EB1233X EB1426H EB1430H EB1430X EB1433X EB1826HL EB1830H EB1830HL EB1830X EB1833X EBL1430 EBM1830 23ûF to 122ûF 5ûC to 50ûC 32ûF to 122ûF 0ûC to 50ûC Pilot lamp indication Charge status lamp Red Overheat lamp G...

Page 9: ...risons with Similar Products Power input 3 3 A Approx 45 minutes for 3 0 Ah 1 Chargeable Ni Cd battery temperature range 2 Chargeable Ni MH SUPER Ni MH battery temperature range 3 Chargeable Li ion battery temperature range HITACHI UC 18YRL UC 18YFL Charging time Overcharge protection system Charging voltage min 45 3 0 Ah V 7 2 to 18 Charging current A 3 3 Power input W 95 Operating ambient temper...

Page 10: ...empted when the ambient temperature is above 40ûC charging is stopped before the battery is fully charged due to temperature rise during charging because the difference between the upper limit of the rechargeable battery temperature Ni Cd batteries 60ûC Ni MH batteries 55ûC SUPER Ni MH batteries 50ûC Li ion batteries 55ûC and the ambient temperature is small 4 Do not use the charger for successive...

Page 11: ...g This phenomenon is common to all existing batteries and chargers which employ temperature sensitive overcharge protection devices The cooling time required before recharging varies from a few minutes to about 30 minutes depending on the load duration of use and ambient temperature 6 2 2 Inserting a battery into a charger in reverse direction can cause serious damage to the battery and the charge...

Page 12: ...charging is detected and charging is automatically suspended charging method dT dt charging method Method B Battery temperature Charging time dT dt Sudden temperature rise just before full charging is detected and charging is suspended Ni MH and SUPER Ni MH batteries UC 14YFA UC 24YFA UC 24YFB UC 24YC UC 18YRL UC 18YFL The Model UC 18YRL UC 18YFL automatically stops recharging upon detection of th...

Page 13: ...harged and then suspends charging The dT dt system detects a sudden temperature rise which occurs just before the battery is fully charged and then suspends charging Q4 Is there any difference in the amount of work possible per charge between the batteries charged with the microcomputer control system and the batteries charged with dT dt microcomputer control system A4 The dT dt microcomputer cont...

Page 14: ...C 5ûC to 55ûC 5ûC to 60ûC 0ûC to 45ûC 0ûC to 45ûC 0ûC to 45ûC 0ûC to 45ûC 0ûC to 45ûC 0ûC to 45ûC 0ûC to 45ûC 0ûC to 45ûC Charging is automatically stopped when the system or the dT dt system detects completion of recharging even if the battery temperature does not reach the above limit Upper limit of the chargeable battery temperature UC 18YFL UC 18YRL 5 ûC to 55ûC 0ûC to 45ûC 0ûC to 45ûC Ni Cd b...

Page 15: ...there is the printed circuit board 2 The printed circuit board consists of the high frequency power transformer microcomputer and other electronic devices to permit rapid charging and to protect against overcharging Case B Printed circuit board Terminal Case A Case A Case B Terminal 8 2 Pilot Lamp Indications Refer to 4 1 5 ...

Page 16: ...charging an EB 1830X battery confirm that the red pilot lamp flashes at 1 second intervals approx 45 minutes from commencing charging 2 Measure the insulation resistance and conduct a dielectric strength test Insulation resistance 10 M Ω or more between the plug blade of cord and the name plate or case fastening screws with a DC 500 V megohm tester Dielectric strength test a Between the plug blade...

Page 17: ...onnection of T or S terminal 2 Faulty PCB 1 Battery connected in reverse direction 2 Faulty battery short circuit or open circuit 3 Faulty PCB Typical causes Refer to trouble mode A Check procedures Refer to trouble mode B Refer to trouble mode C Refer to trouble mode D NO NO NO NO YES YES YES YES Pilot lamp fails to light or flash Apply rated voltage Is rated voltage applied to the plug Is there ...

Page 18: ...s been connected Are the connection terminals of the charger or the battery dirty deformed or otherwise abnormal Faulty internal circuits Replace PCB Remove dirt or correct abnormality Replace the battery YES Is the fuse on secondary side blown NO Replace the fuse Is the resistance between S and terminals 2 KΩ to 100 KΩ ...

Page 19: ...ains green red fails to light after battery has been connected Allow battery to cool prior to charging NO Conduct charging within designated temperature range 0 C to 40 C Clean or repair deformed terminals For the Ni Cd batteries charging cannot be accomplished if battery temperature is above 55 C For the H type batteries charging cannot be accomplished if battery temperature is above 50 C Replace...

Page 20: ... in correct direction YES Remove foreign matter Is the battery connected in reverse direction Is there some sort of conductive foreign matter in the hole where the battery is inserted NO NO YES Replace the battery Is the battery short circuited or opened Replace PCB Faulty internal circuit ...

Page 21: ...MODEL 10 20 30 40 Fixed Variable UC 18YRL Work Flow Prism Fan Fuse 60 min 50 Case A B Set Cord Terminal A Printed Circuit Board Ass y General Assembly UC 18YFL Prism Fuse Case A B Set Cord Terminal A Printed Circuit Board Ass y General Assembly ...

Page 22: ...ELECTRIC TOOL PARTS LIST LIST NO G845 CHARGER Model UC 18YRL 2006 6 22 E1 Hitachi Power Tools 1 3 4 6 7 2 5 8 9 10 11 ...

Page 23: ...ORD 1 FOR GBR 4 318 259 CORD 1 FOR USA CAN 4 318 260 CORD 1 FOR AUS 5 326 306 FAN 1 6 319 781 FUSE 125V 3 15A 1 6 319 780 FUSE 250V 3 15A 1 7 326 285 TERMINAL A 7 8 PRINTED CIRCUIT BOARD ASS Y 120V 1 INCLUD 6 7 8 PRINTED CIRCUIT BOARD ASS Y 230V 240V 1 INCLUD 6 7 9 CAUTION LABEL 1 FOR USA CAN 10 300 036 TAPPING SCREW W FLANGE D3X20 4 11 NAME PLATE 1 Printed in Japan 060622N ...

Page 24: ...ELECTRIC TOOL PARTS LIST LIST NO G844 CHARGER Model UC 18YFL 2006 6 20 E1 Hitachi Power Tools 10 1 3 4 5 6 2 7 8 9 ...

Page 25: ...ET 1 4 318 262 CORD 1 4 318 259 CORD 1 FOR USA CAN 4 318 260 CORD 1 FOR AUS 4 318 261 CORD 1 FOR GBR 5 319 781 FUSE 125V 3 15A 1 5 319 780 FUSE 250V 3 15A 1 6 326 285 TERMINAL A 7 7 PRINTED CIRCUIT BOARD ASS Y 120V 1 INCLUD 5 6 7 PRINTED CIRCUIT BOARD ASS Y 230V 240V 1 INCLUD 5 6 8 CAUTION LABEL 1 FOR USA CAN 9 300 036 TAPPING SCREW W FLANGE D3X20 4 10 NAME PLATE 1 ...

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