InFocus CR 18DMR manual Maintenance and Inspection

2.Selection of BI-METAL blades

The BI-METAL blade numbers in Table 7 are described on the packages of special accessories. Select appropriate blades by referring to Table 7 and 8 below.

Table 7: Bl-METAL blades

Blade	Uses	Thickness
No.		(mm)
No. 101	For cutting steel and stainless pipes	2.5 – 6
	less than 60 mm in outer diameter
No. 102	For cutting steel and stainless pipes	2.5 – 6
	less than 100 mm in outer diameter
No. 103	For cutting steel and stainless pipes	2.5 – 6
	less than 60 mm in outer diameter
No. 104	For cutting steel and stainless pipes	2.5 – 6
	less than 100 mm in outer diameter
No. 105	For cutting steel and stainless pipes	2.5 – 6
	less than 60 mm in outer diameter
No. 106	For cutting steel and stainless pipes	2.5 – 6
	less than 100 mm in outer diameter
No. 107	For cutting steel and stainless pipes	Below 3.5
	less than 60 mm in outer diameter
No. 108	For cutting steel and stainless pipes	Below 3.5
	less than 100 mm in outer diameter
No. 121	For cutting and roughing lumber	100
No. 131	For cutting and roughing lumber	100
No. 132	For cutting and roughing lumber	100

NOTE

Nos. 101 – No. 132 Bl-METAL blades are sold separately as optional accessories.

3.Selection of blades for other materials Table 8

Material	Material	Thickness	Blade No.
to be cut	quality	(mm)
Iron plate	Mild steel	2.5 – 10	No. 1, 2, 101,
	plate		102, 103, 104,
			105, 106, 131
		Below 3.5	No. 3, 107,
			108
Nonferrous	Aluminium,	5 – 20	No. 1, 2, 101,
metal	Copper and		102, 103, 104,
	Brass		105, 106, 131,
			132
		Below 5	No. 3, 107,
			108
Systhetic	Phenol resin,	10 – 50	No. 1, 2, 4,
resin	Melamine		101, 102, 103,
	resin, etc.		104, 131, 132
		5 – 30	No. 3, 5, 8,
			105, 106, 107,
			108
	Vinyl chloride,	10 – 60	No. 1, 2, 4,
	Acrylic resin,		101, 102, 103,
	etc.		104, 131, 132
		5 – 30	No. 3, 5, 8,
			105, 106, 107,
			108

MAINTENANCE AND INSPECTION

CAUTION

Be sure to turned off the switch and remove the battery before maintenance and inspection.

1.Inspecting the blade

Continued use of a dull or damaged blade will result in reduced cutting efficiency and may cause overloading of the motor. Replace the blade with a new one as soon as excessive abrasion is noted.

2.Inspecting the mounting screws

Regularly inspect all mounting screws and ensure that they are properly tightened. Should any of the screws be loose, retighten them immediately. Failure to do so could result in serious hazard.

3.Maintenance of the motor

The motor unit winding is the very “heart” of the power tool. Exercise due care to ensure the winding does not become damaged and/or wet with oil or water.

4.Inspecting the carbon brushes (Fig. 30)

The motor employs carbon brushes which are consumable parts. Since and excessively worn carbon brush can result in motor trouble, replace the carbon brush with new ones when it becomes worn to or near the "wear limit". In addition, always keep carbon brushes clean and ensure that they

slide freely within the brush holders.

NOTE

When replacing the carbon brush with a new one, be sure to use the Hitachi Carbon Brush Code No. 999058.

5.Replacing carbon brushes

Take out the carbon brush by first removing the brush cap and then hooking the protrusion of the carbon brush with a flat head screw driver, etc., as shown in Fig. 32.

When installing the carbon brush, choose the direction so that the nail of the carbon brush agrees with the contact portion outside the brush tube. Then push it in with a finger as illustrated in

Fig. 33. Lastly, install the brush cap.

CAUTION

Be absolutely sure to insert the nail of the carbon brush into the contact portion outside the brush tube (You can insert whichever one of the two nails provided).

Caution must be exercised since any error in this operation can result in the deformed nail of the carbon brush and may cause motor trouble at an early stage.

6.Cleaning of the outside

When the Cordless Reciprocating Saw is stained, wipe with a soft dry cloth or a cloth moistened with soapy water. Do not use chloric solvents, gasoline or paint thinner, as they melt plastics.

7.Storage

Store the Cordless Reciprocating Saw in a place in which the temperature is less than 40°C, and out of reach of children.

8.Service parts list

A:Item No.

B:Code No.

C:No. Used

D:Remarks

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