Makita Battery Charger DC18RC User Manual

ECHNICAL INFORMATION  
PRODUCT  
T
P 1/ 5  
Models No.  
Description  
DC18RC  
Charger  
CONCEPT AND MAIN APPLICATIONS  
Model DC18RC is a new developed compact size fast charger  
with the equivalent functions as current model DC18RA.  
Its brief benefits are:  
H
L
W
1) Only 22 minutes to fully charge of 3.0Ah Li-ion battery  
2) Innovative computer controlled charging system provides  
optimum charge to each battery through the digital  
communication between charger and battery  
3) Cooling fan to keep the battery temperature low  
for minimum charging time  
Dimensions: mm (")  
Length (L)  
Width (W)  
Height (H)  
156 (6-1/8)  
190 (7-1/2)  
84 (3-5/16)  
4) The adapter ADP04 (optional accessory) enables to charge  
the existing Ni-Cd and Ni-MH batteries  
5) The adapter ADP03 (optional accessory) enables to refresh  
inactive batteries  
6) Selectable melody sound of completed charging  
Specification  
Continuous Rating (W)  
Voltage (V)  
Current (A)  
Cycle (Hz)  
Standby power (W)  
Input  
240  
Output  
110-120  
220-240  
50/60  
50/60  
0.4  
0.8  
240  
Output voltage: V  
Output current: A  
DC 7.2 - 18  
DC 9.0  
Protection against electric shock  
Power supply cord: m (ft)  
Double insulation*1  
2.0 (6.5)  
Weight according to  
EPTA-Procedure 01/2003: kg (lbs)  
0.75 (1.65)  
Charging time  
Cell  
Capacity:Ah Voltage:V  
Battery  
BL1415  
14.4  
Li-ion  
1.3  
18  
BL1815  
Approx. 15 min.  
12  
BH1220, BH1222C  
BH1420  
Ni-MH  
2.0  
14.4  
2.0  
2.7  
9.6  
BH9020, BH9020A  
BH1427  
Approx. 20 min. Ni-MH  
14.4  
14.4  
18  
BL1430, BL1430A  
BL1830  
3.0  
Li-ion  
Approx. 22 min.  
12  
BH1233, BH1233C  
BH1433  
Ni-MH  
3.3  
3.3  
14.4  
9.6  
Ni-MH  
BH9033, BH9033A  
Approx. 30 min.  
Ni-Cd*2  
1.3  
2.0  
2.6  
3.0  
7.2 - 18 All 1.3Ah Ni-Cd batteries except maktec series  
7.2 - 18 All 2.0Ah Ni-Cd batteries  
Ni-Cd*2  
Approx. 45 min.  
Approx. 60 min.  
Ni-MH*2  
7.2 - 18 All 2.6Ah Ni-MH stick/ pod batteries  
9.6 - 18 All 3.0Ah Ni-MH stick/ pod batteries  
Approx. 70 min. Ni-MH*2  
*1: excludes some countries  
*2: use with interchangeable adapter ADP04 (optional accessory).  
Note: The charging time depends to a large extent on battery's temperature or room temperature.  
Optional accessories  
ADP03 Automatic Refreshing Adapter,  
ADP04 Interchangeable Adapter  
 
P 3/ 5  
Repair  
[1] DISASSEMBLING / ASSEMBLING  
[1]-2. Terminal cover  
Fig. 3  
DISASSEMBLING  
3x10 Tapping  
screw  
Charger case  
Remove 3x10 Tapping screw from the reverse side of  
the removed Charger case complete, then separate  
a couple of Compression spring 4 from Terminal cover.  
Note: These compression springs are different from  
Compression spring 4 behind Terminal unit.  
Compression  
spring 4 (2 pcs.)  
Terminal cover  
ASSEMBLING  
Refer to Fig. 4.  
Fig. 4  
Compression spring 4  
Boss of Terminal cover  
Retaining portion  
Boss  
Retaining portion of  
Charger case to  
receive Compression  
spring 4  
Terminal  
cover  
1. While compressing a couple of Compression spring 4 toward  
the retaining portions of Terminal cover, insert the boss of  
Terminal cover into the elliptic hole of Charger case.  
Elliptical hole  
2. Push the compression springs using Slotted screwdriver  
and fit them to the retaining portions of Charger case and  
Terminal cover.  
Retaining portion of  
Charger case to  
receive Compression  
spring 4  
Compression  
Retaining portion of Terminal cover  
spring 4  
to receive Compression spring 4  
Terminal  
cover  
3. Drive 3x10 Tapping screw to the boss of Terminal cover. (Fig. 3)  
Note: The fastening torque has to be 0.5N.m. (5kgf.cm)  
 
P 4/ 5  
Repair  
[1] DISASSEMBLING / ASSEMBLING  
[1]-3 Wiring of Power supply cord and Lead wires of Scirocco fan  
Be careful to route Power supply cord and Lead wires of Scirocco fan into Charger case cover as drawn in Fig. 5.  
Fig. 5  
CN1  
Make sure that Power supply cord is put  
in the labyrinth of Charger case cover.  
CN2  
Scirocco fan  
Make sure that Lead wires of Scirocco fan  
is fixed in Lead wire holders.  
Lead wires of  
Scirocco fan  
CN3 (Connector of  
Scirocco fan)  
Lead wire holders  
[1] -4. Terminal base, Circuit board  
DISASSEMBLING  
Remove Terminal base and Circuit board in accordance with [1]-1 and Fig. 6.  
Fig. 6  
1. After removing Terminal unit, unscrew a Tapping screw 2. Disconnect the connector of Scirroco fan with CN3 of  
for fastening Terminal base and Circuit board.  
Circuit board, then remove Terminal base from Charger  
case cover.  
Scirroco fan  
Terminal unit  
Terminal base  
Tapping  
screw  
Terminal  
base  
Circuit board  
Charger case cover  
3. Circuit board can be removed from Charger case cover.  
ASSEMBLING  
Take the reverse step of Disassembling.  
 
P 5/ 5  
Repair  
[1] DISASSEMBLING / ASSEMBLING  
[1] -5.Varistor and Fuse  
(1) Types of Breakage  
1. If Fuse is broken, Varistor is usually broken by showing the sign of breakage mentioned below.  
In this case, replace fuse and varistor at the same time.  
Sign of varistor breakage  
a) Cracks in the surface of varistor  
b) Black discolored surface of varistor  
2. Only Varistor can be damaged if Charger is plugged in a power source at double the rated voltage.  
In this case, replace Varistor solely.  
3. If Fuse is broken while Varistor is not broken, Circuit board can be broken.  
In this case, replace charging circuit complete. (Fig. 6)  
(2) Replacing Varistor/ Fuse  
Varistor/fuse is soldered on the Circuit board. Remove a broken Varistor / Fuse with soldering iron  
and solder brand-new one. (Fig. 7)  
Note: Be sure to use the appropriate parts.  
Fig. 7  
Varistor  
Fuse  
Power supply cord  
 

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