FASANO TOOLS CAT III 300V User manual

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The reproduction of this document (even in partial form) is prohibited without the Fasangas S.r.l. authorization
DC / AC DIGITAL MULTIMETER
(CAT III 300V)

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Before using the multimeter, carefully read the warnings and
instructions contained in this manual.
This manual of warnings and instructions is an integral part of the
product and must be kept by the user for any future consultations. It
contains important information on the safe use of the product.
Usage destination.
This measuring device and its accessories must only be used by
professionally qualified personnel and only for the purpose for which
they were conceived. Any use other than that indicated could cause
damage to people, animals or things and is considered improper and
unreasonable. The manufacturer cannot be held responsible for any
damage caused by improper, erroneous and unreasonable uses,
such as: failure to comply with the instructions and warnings provided,
use of non-original accessories, unauthorized modifications or
interventions on the product, etc.
This equipment falls within the scope of Directive 2012/19 / UE. The
crossed-out trash can symbol on the product and / or on its packaging
means that at the end of its life, the product must be treated
separately from household waste and therefore must be sent to the
appropriate disposal and recycling centers. This operation is the
responsibility of the user. The disposal of the product at the specific
dedicated structures helps to avoid possible negative effects on the
environment and promotes the recycling of the materials that
compose it.
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Reading: 4000 points - 3 3/4 digit LCD type display with indication of the functions.
This multimeter has been designed to measure DC and AC voltages, DC and AC currents,
resistance, electrical capacity, frequency, diodes, temperature, continuity, duty cycle, sound,
relative humidity and brightness. Usable to test various devices or for the environment, the
Fasano Tools multimeter is a versatile and high-performance instrument.
This instrument has been designed in compliance with the IEC 61010 standard
(Standard CEI EN 61010-1 / A1: "Safety requirements for electrical measuring,
control and laboratory use appliances"), for double insulation and pollution degree 2.
CAT III 300 V instrument - Instrument for fixed installations. Note - For example
switches for fixed installations and some equipment for industrial use permanently
connected to fixed installations.

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ATTENTION
o Never use the multimeter for measurements that require category IV
instruments
o
To avoid electric shock or personal injury, follow these instructions:
o do not use the multimeter if damaged. Before use, check the appliance. Pay particular
attention to the insulation of the connectors
o check the tips for any damage to the insulation and make sure that there are no
exposed metal parts. Check the continuity of the tips. Replace the damaged tips before
use; use only original components
o do not use the multimeter for functions not prescribed: the protections could be
damaged. If in doubt, contact the manufacturer
o do not use the multimeter in the presence of explosive gases, vapors or dusts
o do not operate with voltages higher than the maximum capacity, as indicated on the
instrument; do not place the Meter between two equipment or between equipment and
grounding
o before use, check the voltage of the instrument to be tested
o for current measurements, turn the switch to OFF before connecting the multimeter to
the circuit. Remember to put the multimeter in series with the circuit
o be careful when operating with voltages above 30V AC rms, 42V peak, or 60V DC.
These voltages can cause an electric shock
o when using the probes, take care to position your fingers beyond the safety ring of the
same
o when taking a measurement, connect the black (negative) test lead first and then the red
(positive) test lead. When the measurement is complete, first detach the red test lead
o remove the test leads from the meter before removing the battery compartment
o do not use the Meter with the battery compartment cover or parts of it removed or
damaged
o in order to avoid incorrect readings, electric shock or personal injury, replace the
batteries when the indicator appears
o when the symbol "REL" or "H" appears on the display in Relative or Data Hold mode, be
careful as high voltages may be present
o when a test lead is connected to a powered circuit, the electrical potential is also
transmitted to the other, therefore it is dangerous to touch the test leads
o do not use the multimeter if it, the test leads or the user's hands are wet
ATTENTION
To avoid damage to the Meter or to the equipment tested, follow these
instructions:
o disconnect the power supply and discharge any capacitors before testing resistors,
diodes, capacitors, temperatures and continuity

24
o correctly use tips, functions and ranges according to the measurement you want to take
o before making current or temperature measurements, check the multimeter's fuses and
turn off the equipment being measured before connecting the multimeter to it
o before switching the multimeter between the different functions, disconnect the test leads
from the tested equipment
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AC (Alternating Current)
DC (Direct Current)
DC e AC (both Direct Current and Alternating Current)
Caution, risk of danger, refer to this manual before use
Caution, risk of electric shock
Earth (ground) Terminal
Fuse
Conforme alle Direttive Europee
The equipment is protected throughout by double insulation
Low batteries
Diode

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DESCRIPTION / USE
1 3 3/4 Digital LCD Display - maximum reading capacity 3999 points
2 Range
mode to manual selection mode
3 Func is button to switch from direct current mode to
alternating current mode or between diode function and continuity function
4 "Hold" button: press this button to enter / exit the data memory
5
Function/Range Switch: use this to select the desired function, range or
turn the multimeter on / off. To conserve battery power, place the switch in
the OFF position when the multimeter is not in use
6 10A Terminal: input for the red connector for current measurements (400mA
~ 10A)
7
mA°C Terminal: input for the red connector for current measurements
(<400mA) Input for the positive (red) connector for the type K thermocouple
for temperature measurements
8 COM Terminal: plug-in connector for the black test lead. plug-in connector
for the negative (or black) plug of the K type thermocouple for temperature
measurements
9 Terminal: plug-in connector for the red test lead for all
measurements excpt temperature, current, sound level, relative humidity and
illuminance measurements
10 button: press and hold down this button fro about 1 second to turn on the
backlight, press this button again to turn off the backlight
11
REL button: press the button to enter / exit the relative mode
12 Hz% button: press the button to switch between frequency and Duty Cycle
measurements
13 Housing

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The sensors are located at the top of the meter and inside
the case.
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1. Continuity test is selected
2. Diode test is selected
3. Autorange modeis selected
4. Relative mode is active
5. Data Hold is enabled
6. Negative sign
7. DC
8. AC
9. Battery is low and must be replaced
immediately
10. Units:
mV; V
Unit of voltage
mV: millivolt; V: Volt
1V=103 mV
Unit of current
: microampere; mA: milliampere; A: Ampere
1A=103 mA=106
Unit of resistance
ch megaohm
3 6
Unit of capacitance
F: farad
1F=106 F=109 nF=1012 pF
°C Unit of temperature
°C: Celsius degree
Hz; kHz; MHz Unit of frequency
Hz: Hertz; kHz: chilohertz; MHz: megahertz
1. Sound sensor
2. Light sensor
3.Humidy sensor

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1MHz=103 kHz=106 Hz
% Unit of
%: percent
lux Unit of illumination
lx: lux
dB Unit of sound measurement
%RH Unit of relative humidity
%: percent
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DISPLAY: 3 3/4 LCD with a max. reading of: 3999
NEGATIVE POLARITY INDICATION: negative sign shown on the display automatically
SAMPLING RATE: 2 to 3 time/sec
IP GRADE: IP20
OPERATING ENVIROMENT: 0°C to 40°C; relative humidity: <75%
STORAGE ENVIROMENT: -30°C to 60°C; relative humidity: <85%
OPERATING ALTITUDE: 0 to 2000 meters
BATTERY: 9V battery, 6F22 or equivalent
LOW BATTERY INDICATION: shown on the display
DIMENSIONS: (162x83x47) mm
WEIGHT: about 310 g (including battery and housing)
SPECIFICATION
Accuracy is guaranteed for a period of one year from the instrument calibration date and at a
temperature between 18 ° C and 28 ° C, with relative humidity <75%.
Normally, the determination of accuracy follows the law:
± [(% of reading) + (number of least significant digits)]
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RANGE RESOLUTION ACCURACY OVERRANGE INDICATION
400 mV 0.1 mV ± (1.0% + 5)
OL shown on the display
4 V 1 mV
± (0.8% + 3)
40 V 10 mV
300 V 100 mV [1]
[1] DANGER if the voltage being measured is > 300V, the display may show the value of
the votage but, the measurement is dangerous
Input Impedance:
the 400mV range: >1000 M
other ranges
Max. Allowble Input Voltage:
300 V DC/AC

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RANGE RESOLUTION ACCURACY OVERRANGE INDICATION
4 V 1 mV
±(1.0%+5)
OL shown on the display
40 V 10 mV
300 V 100 mV [1]
Input impedance:
Max. allowable input voltage: 300V DC/AC
Frequency range: 40 Hz - 400 Hz
Response: avarange (calibrated in rms of sine wave)
[1] DANGER if the voltage being measured is > 300V, the display may show the value of
the voltage but, the measurement is dangerous.
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RANGE RESOLUTION ACCURACY OVERRANGE INDICATION
± (1.2% + 3)
OL shown on the display
40 mA
400 mA
4 A 1 mA ± (1.8% + 3)
10 A 10 mA ± (2.0% + 5) [1]
Overload protection:
for mA°C terminal inputs only: 500mA/300V fast fuse
for 10A terminal inputs only: 10A/300V fast fuse
Max. input current:
10A (for inputs > 2A: measurement duration <10 seconds, interval > 15 minutes)
Max. voltage drop:
400 mV
[1] DANGER if the current being measured is > 10A, the display may show the value of the
current but, the measurement is dangerous.
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RANGE RESOLUTION ACCURACY OVERRANGE INDICATION
400
± (1.5% + 5)
OL
4000 1
40 mA 10
400 mA 100
4A 1 mA ± (2.0% + 5)
10A 10 mA ± (2.5% + 5) [1]

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Overload protection:
for mA°C terminal inputs only: 500mA/300V Fast fuse
for 10A terminal inputs only: 10A/300V Fast fuse
Max. Input current:
10A (for inputs > 2A: measurement duration <10 seconds, interval > 15 minutes)
Max. voltage drop:
400 mV
Frequency range:
40 Hz - 400 Hz
Response:
averange (calibrated in rms of sine wave)
[1] DANGER if the current being measured is > 10A, the display may show the value of the
current but, the measurement is dangerous.
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RANGE RESOLUTION ACCURACY OVERRANGE INDICATION
±(1.0% + 5)
OL shown on the display
1
±(1.0% + 3)
±(2.0% + 5)
Open circuit voltage:
about 0.25V
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RANGE RESOLUTION ACCURACY OVERRANGE INDICATION
10 Hz
0.01 Hz
± (1.0%+3)
OL shown on the display
100 Hz
0.1 Hz
± (0.8%+3)
1 kHz
1 Hz
10 kHz
10 Hz
100 kHz
100 Hz
± (1.0%+3)
200 kHz
1 kHz
[1]
> 200 kHz
Not specified
Input voltage: 1Vrms - 20Vrms
[1] if the frequency being measured is > 200 kHz, the display may show a reading but, the
measured accuracy is not gearanteed.

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RANGE RESOLUTION ACCURACY OVERRANGE INDICATION
4 nF 0.001 nF
± (4.0% + 5)
OL shown on the display
40 nF 0.01 nF
400 nF 0.1 nF
4 1 nF
10 nF
100 nF ± (8.0% + 5)
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[1] if the temperature being measured is out of the range -20°C ~ 1000°C, the display may
show a reading but the measurement error may be large or the thermocouple may be
damaged.
Overload protection:
500 mA/300 V fast fuse
Note:
use K thermocouple
accuracy does not include error of the thermocouple probe
accuracy specification assumes ambient temperatuere is stable to ±1°C. For ambient
temperature changes of ±5°C, rated accuracy applies after 1 hour.
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Measurement range: 3Vp-p ~ 10Vp-p
[1] if the duty cycle being measured is out of the range of 5% ~ 95% the display may show a
reading but, the measurement accuracy is not guaranteed.
RANGE RESOLUTION ACCURACY OVERRANGE
INDICATION
-20°C~ 400°C 0.1 °C ± 1.5% ± 3°C
[1]
400°C~ 1000°C 1°C ± 2.0% ± 3°C
RANGE RESOLUTION ACCURACY OVERRANGE
INDICATION
5% ~ 95% 0.1 % 1Hz ~ 10kHz: ± (2.0% + 5)
[1]
>10 kHz: not specified

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(
(
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RANGE RESOLUTION ACCURACY OVERRANGE INDICATION
30% ~ 90% 0.1% [1]
Working temperature:
0°C ~ 40°C
Response time:
45% RH : utes
: es
[1] if the humidity being measured is out of the range of 30% ~ 90% the display may show a
reading but, the measurement error my be large.
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RANGE RESOLUTION ACCURACY OVERRANGE INDICATION
35 ~ 100 dB 0.1 dB [1]
Frequency: 100 Hz ~ 10000 Hz
[1] if the sound level being measured is out of the range of 35 ~ 100 dB the display may
shown a reading but, the measurement error may be large.
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RANGE RESOLUTION ACCURACY OVERRANGE
INDICATION
400 x 10 Lux 1 Lux OL shown on the
display
4000 x 10 Lux 10 Lux
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DESCRIPTION REMARK
The approx. Forward voltage drop of
the diode will be displayed.
Open circuit voltage:
about 1.5 V
The buit-in buzzer will sound if the
resistance is less than about 50 . The
buzzer will not sound if the resistance
is more than about The buzzer
may or may not sound if the
resistance is between 50 and 120
Open circuit voltage:
about 0.45V

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The relative mode can be used with all functions but not with the Frequency function and the
Duty Cycle function.
By selecting Relative Mode, the multimeter stores the measurement made and uses it as a
reference value for subsequent measurements.
1. Press the REL button. The multimeter enters Relative Mode and stores the measurement
shown on the display to use it as a reference value for subsequent measurements. The
REL icon appears on the display to indicate that you are operating in Relative Mode. The
zero value appears on the display.
2. When taking a new measurement, the difference between the reference value and the
new measured value is shown on the display.
3. To exit the relative mode, press the REL key again. The REL icon will no longer be
present on the display.
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Press the HOLD button to hold the present reading on the display. appears on the display
as indicator. To exit data hold mode just press the button again. disappears.
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This multimeter is predefined to operate in Automatic Mode in the measurement functions
that have both automatic and manual modes. When the multimeter is in Automatic mode, the
AUTO icon appears on the display.
1. Manual mode: by pressing the RANGE key, the multimeter enters Manual Mode and the
AUTO icon is no longer shown on the display.
Each time the RANGE key is pressed, the flow rate is increased. Once the maximum flow
rate value is reached, the multimeter returns to the minimum flow rate value.
2. Automatic mode: by pressing the RANGE key for about 2 seconds, the multimeter exits the
Manual mode and returns to the Automatic mode.
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1. When a button is pressed, the sound device activates to indicate that it has been
pressed.
2. The sound device activates in the following cases:
a. During AC voltage measurements: when the voltage value to be measured exceeds
750V
b. During DC voltage measurements: when the voltage value to be measured exceeds
1000V
c. e measured exceeds
4000
d. When the "mA" unit of measure is displayed and the current to be measured
exceeds 400mA

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e. When the unit of measurement "A" is shown on the display and the current to be
measured exceeds 10A
The buzzer emits 5 beeps 1 minute before the multimeter automatically turns off and, a longer
sound immediately before the multimeter automatically turns off.
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1. Connect the black test lead to COM terminal and red test lead to the terminal.
2. Set the function swich . Press the FUNC key to select voltage measurement in DC or
AC. The corresponding symbol will appear on the display.
3. If you are working in Manual Mode and do not know what value the voltage to be
measured is around, first select the highest range and reduce it gradually until the correct
resolution is reached.
4. Connect the test leads to the circuit to be measured.
5. Read the value on the display. For DC voltage measurements, the polarity of the red test
lead will be shown on the display.
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Position the Multimeter switch on the desired range:
r
In both Automatic and Manual mode, if you do not know the indicative value of the current to
be measured, select the maximum flow rate and reduce it gradually until reaching the desired
resolution.
1. Press the FUNC key to select the DC direct current measurement mode or the AC
alternating current measurement mode. The corresponding symbol will appear on the
display.
2. Connect the black test lead to the "COM" input:
if the current to be measured is less than 400mA, connect the red test lead to
the jack mA°C
if the current to be measured is between 400mA and 10A, connect the red test
lead to the jack 10
3. Remove the current from the circuit to be tested and discharge each capacitor.
4. Open the circuit at the point where you want to measure the current; connect the test
leads in series with the circuit.
5. Give power to the circuit. Read the measurement on the multimeter display. For DC direct
current measurements, the polarity of the red test lead will be shown on the display.
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1. Connect the black test lead to the "COM" jack and the red test lead to
2. Place the switch on the symbol
3. Use the test leads to touch the circuit or part to be tested.
4. Read the measurement on the display

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ST
T
1. Connect the black test lead to the "COM" jack and the red test lead to the jack
2. Set the switch to
3. Press the "FUNC" button until the icon appears on the display
4. Touch the leads you want to test with the test leads
5.
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1. Connect the black test lead to the "COM" jack and the red test lead to the jack
2. Set the switch to
3. Discharge the capacitor to be tested and touch the capacitor with the tips
4. Wait for the reading to stabilize and, read the value on the display
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AN
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"D
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YC
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E"
"
1. Connect the black test lead to the "COM" jack and the red test lead to the jack
2. Place the selector on the Hz% position
3. Press the Hz% button to select the frequency or duty cycle measurement (the display will
show the corresponding unit of measurement)
4. Touch the test leads with the test leads
5. Read the measured value on the display
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1. Connect the black test lead to the "COM" jack and the red test lead to the jack
(Connect the black test lead to the "COM" jack and the red test lead to the jack
2. Place the selector on the position
3. Press the "FUNC" button so that the icon appears on the display
4. Connect the red test lead of the multimeter to the anode of the diode to be tested and the
black test lead to the cathode.
5. The display will show the approximate value of the voltage drop of the diode. If the polarity
is reversed, the "OL" icon will appear on the display
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1. Position the selector on the ° C position
2. Connect the negative (or black) pole of the type K thermocouple to the COM jack and the
positive (or red) pole to the mA ° C jack
3. Touch the object to be tested with the other tip of the thermocouple
4. Wait a moment and read the measured value on the display.

35
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T
With this multimeter it is also possible to perform relative humidity measurements. The
integrated sensor is positioned near the% RH icon on the top of the multimeter.
1. Place the selector on the% RH position
2. Place the multimeter in the place where you need to measure relative humidity.
3. Wait for the reading to stabilize. Read the measured value on the display.
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With this multimeter it is also possible to perform sound level measurements thanks to the
presence of a specific integrated sensor. The sensor is positioned near the dB icon on the top
of the multimeter.
1. Place the selector on the dB position
2. Point the sensor towards the source whose sound level you want to measure
3. Read the measured value on the display
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With this multimeter it is also possible to measure light intensity thanks to the
presence of a specific integrated sensor. The sensor is positioned near the
"Lux" icon on the top of the multimeter.
1. Place the selector on the X10Lux position
2. Point the sensor towards the light source that must be tested so that the light can pass
through the white slide placed above the sensor
3. To obtain the measured value: multiply by 10 the value read on the multimeter display.
Relative Spectral sensitivity vs. - wavelength

36
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If the position of the selector is not changed or any button is pressed within about 15 minutes,
the backlight of the dispay switches off and the multimeter enters "Sleep" mode. To exit the
"Sleep" mode, simply change the position of the selector or press any button.
To disable the Auto Power Off function, hold down the FUNC key while turning on the Meter.
General maintenance
Periodically clean the Meter with a damp cloth and use mild detergents. Do not use abrasives
or solvents. Readings can be affected if the meter leads are dirty or wet.
To clean the tips proceed as follows:
1. set the selector to the OFF position and remove the test leads
2. remove all traces of dirt on the terminals
3. wet a cotton ball with alcohol and pass it on the terminals
Replacement of battery and fuse
To replace the battery, remove the battery compartment cover screws and replace the old
battery with a new one of the same type. Screw the battery compartment cover back on.
To replace the fuse: open the battery compartment cover, remove the gasket, remove the
rear cover and replace the old fuse with a new fuse having the same properties. Screw the
back cover back on. Reinstall the gasket and screw the battery compartment cover.
This multimeter has two fuses:
F1: 50mA/300V fast fuse (Ø5x20mm)
F2: 10mA/300V fast fuse (Ø5x20mm)
The multimeter is supplied with: user manual, warnings and maintenance; a pair of tips; a
type K thermocouple
This product complies with the provisions of the following European directives and the related
harmonized standards:
EMC directive
2014/30/EU
EN 61326-1:2013
EN 61326-2-2:2013
LVD directive
2014/35/EU
EN 61010-1:2010
EN 61010-2-030:2010
EN 61010-031:2015
EN 61010-2-033:2012
RoHS directive
2011/65/EU
IEC 62321
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37
This tool is guaranteed free from manufacturing and material defects, for normal service use,
for a period of one year. If during this period the instrument should encounter defects
attributable to the manufacturer, the Fasangas Srl company will act, at its discretion, repairing
the appliance or replacing it with others of equal value and characteristics without any
expense for the buyer. The warranty does not cover batteries, fuses and faults caused by
inappropriate or incorrect use of the appliance or in any case not in compliance with what is
detailed in this manual. The warranty right expires if the instrument has been tampered with
by personnel not authorized by Fasangas Srl. Products without warranty rights will be
repaired at the customer's expense.
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