Fault Finding - Bosch Rotak 37 LI Original Instructions Manual

F016 L70 447.book Seite 8 Dienstag, 17. Juni 2008 4:57 16

Fault Finding

The following table gives checks and actions that you can perform if your machine does not operate correctly.
If these do not identify/remedy the problem, contact your service agent.
Warning: Switch off and remove the isolator key before investigating fault.
Symptom
Machine fails to operate
Machine starts and stops
immediately
Machine functions
intermittently
Machine leaves
ragged finish
or
motor labours
Area of cut (battery dura-
tion) not large enough
Cutting blade not rotating
while machine switched on
Excessive vibration/noise
No Charging Procedure
Possible due to Defective
Battery
The charge control
LEDs 19 and 18 respec-
tively, do not light up after
inserting the mains plug
into the socket
24 • F016 L70 447 • TMS • 04.06.08
Possible Cause
Underside of machine badly clogged
Battery not fully charged
Battery not fitted correctly
Fuse faulty/blown in isolator key
Mower in long grass
Motor protector has activated
Battery too hot/cold
Isolator key has not been inserted cor-
rectly/ fully
There is a short delay in the motor start-
ing after engaging the switch lever
Battery not fully charged
Isolator not fully in
Battery not fitted correctly
Battery too hot/cold
Machines internal wiring damaged
Motor protector has activated
Height of cut too low
Cutting blade blunt
Underside of machine badly clogged
Blade fitted upside down
Height of cut too low
Grass too high
Grass wet or damp
Grass is dense
An additional battery can be purchased
from an authorised customer service
agent for Bosch garden products
Cutting blade obstructed
Blade nut/bolt loose
Blade nut/bolt loose
Cutting blade damaged
The contacts of the battery are contami-
nated
The battery is defective, due to a discon-
nection in the battery (individual cells)
The charger plug is not inserted (prop-
erly)
Socket, cable or charger are defective
English - 8
Remedy
Clean machine (see "After Mowing/Stor-
age")
Charging the Battery
Fit battery correctly
Contact Service Agent
Increase height of cut and tilt mower
Allow to cool and increase height of cut
Allow to cool/warm
Fit correctly
Hold switch lever for 1 - 3 seconds to
start motor
Charging the Battery
Fit correctly
Fit correctly
Allow to cool/warm and increase height
of cut
Contact Service Agent
Allow to cool and increase height of cut
Increase height of cut (see "Height of Cut
Adjustment")
Replace blade
(see "Blade Maintenance")
Clean machine (see "After Mowing/Stor-
age")
Refit blade correctly (see "Blade Mainte-
nance")
Increase height of cut
Increase height of cut
Wait until grass is dry
Raise height of cut and walk slower, and
cut more frequently
Contact Service Agent
Clear obstruction
Tighten blade nut/bolt
Tighten blade nut/bolt
Replace blade
Corrective measure: Clean the contacts
(e. g. by inserting and removing the bat-
tery several times) or replace the battery,
as required
Replace the battery
Insert the plug (fully) into the socket
Check the mains voltage and if neces-
sary, have the battery charger checked
by an authorized customer service sta-
tion for Bosch power tools