Bosch Power Tools RH745, RH850VC manual Maintenance, Accessories, Cleaning, Service Reminder Light

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BM 160992A0H1 01-14_RH745 RH850VC 1/22/14 10:22 AM Page 11

Maintenance

Service

Preventive maintenance performed by unauth- orized per so n nel may result in misplacing

of internal wires and components which could cause serious hazard. We recommend that all tool service be performed by a Bosch Factory Service Center or Autho- rized Bosch Service Station.

SERVICE REMINDER LIGHT

When the service reminder light lights up or blinks, this will indicate that the cut-out carbon brushes will switch off the tool in approximately 8 hours. After that period, the light will go off and the tool will stop running. The tool must then be sent to a service center for service.

TOOL LUbRICATION

Your Bosch tool has been properly lubricated and is ready to use. It is recommended that tools with gears be regreased with a special gear lubricant at every brush change.

CARbON bRUSHES

The brushes and commutator in your tool have been engineered for many hours of dependable service. To maintain peak efficiency of the motor, we recommend every two to six months the brush es be examined. Only genuine Bosch replace ment brushes

specially designed for your tool should be used.

bEARINGS

After about 300-400 hours of operation, or at every second brush change, the bearings should be replaced at Bosch Factory Service Center or Au thorized Bosch Service Station. Bearings which become noisy (due to heavy load or very abrasive material cut ting) should be replaced at once to avoid overheating or motor failure.

Cleaning

To avoid accidents always dis connect the tool from the power supply before cleaning or

performing any main tenance. The tool may be cleaned most effectively with compressed dry air. Always wear safety gog gles when cleaning tools with compressed air.

Ventilation openings and switch levers must be kept clean and free of foreign matter. Do not at tempt to clean by inserting pointed objects through openings.

Certain cleaning agents ! CAUTION and sol vents damage

plastic parts. Some of these are: gasoline, carbon tetrachlo ride, chlo rinated cleaning solvents, ammonia and house hold detergents that contain ammonia.

Accessories

If an extension cord is necessary, a cord with adequate size conductors that is capable

of carrying the current necessary for your tool must be used. This will prevent excessive voltage drop, loss of power or overheating. Grounded tools must use 3-wire extension cords that have 3-prong plugs and receptacles.

NOTE: The smaller the gauge number, the heav ier the cord.

RECOMMENDED SIZES OF ExTENSION CORDS 120 VOLT ALTERNATING CURRENT TOOLS

Tool’s	Cord Size in A.W.G.				Wire Sizes in mm2
Ampere
	Cord Length in Feet				Cord Length in Meters
Rating
	25	50	100	150	15	30	60	120
3-6
	18	16	16	14	0.75	0.75	1.5	2.5
6-8	18	16	14	12	0.75	1.0	2.5	4.0
8-10	18	16	14	12	0.75	1.0	2.5	4.0
10-12	16	16	14	12	1.0	2.5	4.0	—
12-16	14	12	—	—	—	—	—	—

Auxiliary Handle*	(*= standard equipment)
Carrying case*	(**= optional accessories)

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