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18 | MMD 302 | General Information
2.5
Danger of injury, Danger of crushing
The vehicle has rotating and moving parts
that can injure fingers and arms.
If the vehicle is not prevented from roll-
ing away, there is a danger of people being
crushed against a workbench, for example.
There is the risk with electrically operated
fans in particular that the fan can start run-
ning unexpectedly even when the engine and
ignition are off.
Safety measures:
¶
Take steps to prevent the vehicle from rolling away
while it is being tested. Select the park position if the
vehicle has an automatic transmission and apply the
handbrake or lock the wheels with chocks (wedges).
¶
Deactivate the start/stop system when working on a
vehicle in order to prevent uncontrolled engine start.
¶
Operating staff must wear work clothes without
loose bands and loops.
¶
Do not reach in any area with rotating or moving parts.
¶
When working on or in the vicinity of electrically
driven fans, allow the engine to cool down first, then
disconnect the plug of the fan motor.
¶
Route cables at a suitable distance from rotating parts.
¶
Secure the trolley against rolling away by setting the
brakes.
¶
Do not place heavy objects on or lean on the sensor
holder.
¶
Transport and operate the equipment only in accor-
dance with the operating instructions.
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1 689 979 642
2014-11-03
3.
General Information
3.1
User profile
The MMD 302 was designed for trained, specialised
personnel such as mechanics, electricians, technicians
and engineers in the area of automotive engineering.
3.2
Application
!
The MMD 302 is only intended for indoor use.
The MMD 302 is a measuring device for:
R
Direct and alternating voltage measurement
R
Continuity test (acoustic) and resistance
measurement
R
Capacitance and diode test
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Frequency measurement
R
Alternating and direct current measurement
R
MIN./MAX. operating mode, recording and storage of
minimum and maximum mea- sured values
R
REL -∆ operating mode, display of the difference be-
tween current and stored measured value
R
HOLD-function for "freezing" the display
3.3
Function description
The MMD 302 (MMD = Multimeter Digital) is a com-
pact and battery-operated digital multi meter. It has a
3 3/4-digit display with an additional analog display,
which consists of 42 segments. It has an automatic
device-shut-down circuit, which is actuated approx.
30 minutes after the last button is pressed (in order to
spare the batteries).
3.4
Scope of delivery
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MMD 302 digital multimeter
R
Red measuring cable with test probe
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Black measuring cable with test probe
R
Red connecting terminal
R
Black connecting terminal
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Protective rubber cover with stand
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2 commercially available dry batteries (installed) 1.5 V
Micro type / AAA / AM4 / LR03 / MN2400-1.5 V
R
Operating instructions
The accessories provided are only to be used
in conjunction with the MMD 302 and for
voltages lower than the value marked on the
accessories. When combining accessories
with the MMD 302, care must be taken not to
exceed the lowest marked voltage value in the
measurement chain.
Robert Bosch GmbH
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