Troubleshooting - Bosch GRA Professional 36V-48 Original Instructions Manual

OBJ_BUCH-2017-003.book Page 16 Friday, January 20, 2017 9:26 AM
16 | English
Area of Cut (Battery Duration)
The area of cut (battery duration) depends on lawn condi-
tions, grass density, moisture content, grass length and
height of cut.
Switching the machine on and off frequently during cutting
will also reduce the area of cut (battery duration).
To improve the area of cut (battery duration) it is recommend-
ed to cut more frequently, raise the cutting height and use
land drive at normal walking pace.
The table below shows the recommended area of cut, when
using the machine with two batteries.
Cutting Conditions
GRA 36V-53, GRA 36V-53 M,
GRA 36V-53 P
Recommended area of cut
GRA 36V-48, GRA 36V-48 M
Recommended area of cut

Troubleshooting

S T OP
Problem Possible Cause
Battery discharged
Machine fails to op-
erate Batteries too hot/cold
Machine functions Internal wiring of machine damaged Contact Service Agent
intermittently
Motor protector has activated
External cabling damaged
Machine leaves rag- Height of cut too low
ged finish
Cutting blade blunt
and/or
Cutting blade obstructed
Motor labours
Blade fitted upside down
Motor starts and Batteries not fully charged
stops immediately
Isolator key not fully located
Batteries not fully inserted
Batteries too hot/cold
F 016 L81 590 | (20.1.17)
Product Transportation
 Ensure that isolator key is removed or in park position be-
fore transporting machine or folding handle. (The isolator
key isolates both land-drive and blade-drive motor).
 Ensure mower is secured to vehicle before transportation
to avoid damage to the machine or your property.
Use the front and rear carrying handles for securing
the machine during transportation.
 Use suitable loading aids (loading ramps or lifters) to load
the product on and off the transport vehicle. The mower
must always be carried by two persons.
2
up to 3000 m
2
up to 2800 m
Corrective Action
Battery Charging
Allow to cool/warm
Allow motor/electronics to cool for 5 minutes and increase height of
cut
Contact Service Agent
Increase height of cut and/or set land drive to a slower speed
Replace/re-sharpen blade
Check underneath the machine and clear out as necessary (always
wear protective gloves)
Re-fit blade correctly (see figure 11)
Check battery display – charge batteries if necessary
Check that the isolator switch is in the "1" position
Fully insert batteries
Allow batteries to warm up/cool down – check battery display
Bosch Power Tools