Bosch GML 20 Professional Operations Instructions download pdf (Page 13)

26 | English

1 609 929 W27 | (1.3.10) Bosch Power Tools

Working Advice

Recommendations for Optimal Handling of the

Battery

Protect the battery against moisture and water.

Store the battery only within a temperature

range between 0 °C and 45 °C. As an example,

do not leave the battery in the car in summer.

A significantly reduced working period after

charging indicates that the battery is used and

must be replaced.

Observe the notes for disposal.

Troubleshooting – Causes and

Corrective Measures

When the corrective measures do not eliminate

an error, please contact an authorised service

agent for Bosch power tools.

Cause Corrective Measure

Construction site radio inoperative

No power supply Properly insert mains

plug or battery (com-

pletely)

Construction site ra-

dio too warm or too

cold

Wait until the con-

struction site radio

has reached operating

temperature

Construction site radio inoperative on A/C

power supply

Mains socket faulty Use another socket

Mains plug or cord de-

fective

Check mains plug and

cable and have re-

paired as required

Construction site radio inoperative on DC

power supply

Battery contacts con-

taminated

Clean the battery con-

tacts (e.g. by inserting

and removing the bat-

tery several times) or

replace the battery

Battery defective Replace the battery

Battery too warm or

too cold (temperature

warning indicator k lit)

Wait until of the bat-

tery has reached oper-

ating temperature

Power supply to external devices inoperative

Mains plug not

plugged-in

Plug mains plug in

(completely)

12 V power supply inoperative

No fuse 32 inserted Insert fuse 32

Fuse 32 blown Replace fuse 32

Internal thermal fuse

blown/actuated

Remove external de-

vice and allow con-

struction site radio to

cool down

Construction site radio suddenly inoperative

Mains plug or battery

not properly or com-

pletely plugged in

Plug in mains plug or

battery properly or

completely

Software error To reset the software,

pull the mains plug

and remove the bat-

tery; wait 30 seconds,

then insert mains plug

and battery again

Bad radio reception

Interference from oth-

er devices or insuffi-

cient set-up location

Position construction

site radio at other lo-

cation with better re-

ception

Rod antenna not opti-

mally directed

Turn/change position

of rod antenna

Time indication faulty

Back-up batteries of

clock empty

Replace back-up bat-

teries

Back-up batteries in-

correctly inserted

(wrong polarity)

Insert back-up batter-

ies correctly

Cause Corrective Measure

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