Care And Cleaning - VOLTCRAFT MF-90 Mode D'emploi

Operation
a) General information before you start measuring
• The moisture level displayed is an average value determined using the moisture on the outer
surface as well as in the interior of the material. If there is visible surface moisture or water,
wipe it off and let the surface dry for a few minutes before you start measuring.
• Other factors can also influence the measurement. Before measuring, the surface must be
free of paint residue, dust, etc.
• Hold the measuring device at its far end as far as possible from the ball head of the moisture
sensor (1) in order to prevent moisture form your hand influencing the measured value.
• The measuring device is not suitable for measuring in metal or other conductive materials.
If metal (e.g. nails, screws, cables, pipes) is trapped in the material within the measurement
range of the sensor, the measured values will increase considerably.
• If the moisture sensor (1) is placed in a wall corner, the measured values may be higher as
there are two or three surfaces within the measurement range. Keep a minimum distance of
8 to 10 cm from other surfaces in order to prevent interference.
• Place the moisture sensor (1) on a smooth surface. Rough surfaces can lead to inaccurate
measurements.
• The measuring depth of the device is from 20 to 40 mm. The density of the material may
render measurement of the inner core impossible. If the material has a thickness of less
than 2 cm, the measured value of the moisture level may be inaccurate due to the adjacent
material.
• The moisture sensor (1) must be held at a right angle to the surface to be measured.
• The density of the measured material plays an important role in the measurement. The
measured value increases with density.
• This device is particularly useful for comparative measurements, whereby the measured
value is compared with a reference value. The reference value is determined by measuring
in a clearly dry area of a similar or identical material. If subsequent measurements are
significantly higher than the reference value, you can conclude that the measurement ranges
are moist. This method is highly suitable for assessing water damage and for locating leaks
and areas of high moisture.
b) Switching on and off
• To switch on, press the on/off button
off, press the on/off button (6) if the measuring device is switched on.
c) Measuring the moisture level
• Press the on/off button (6) to switch the measuring device on.
• The measuring device must be calibrated each time it is switched on. To calibrate the
measuring device, hold it in the air so that the moisture sensor (1) is not in contact with
any objects. The minimum distance from any surfaces or your hand to the ball head of the
moisture sensor (1) should be 8 to 10 cm.
• Press the MEAS button (5) to start the calibration process. The LC display shows "CA" during
calibration.
• After calibration, the LC display (2) shows the current moisture level (18). This calibration
value should be "0". If not, switch the measuring device off and repeat the calibration process
after switching on again.
• Calibration must be repeated after each restart or any change to the measurement point or
object being measured.
If you have calibrated the measuring device for a measurement, do not change the
position of your hand for the subsequent measurement. Measurement calibration
and measurement must be carried out with the same hand position as a change to
the position of the hand relative to the ball head of the moisture sensor (1) will lead
to measuring errors.
• Hold the ball head of the moisture sensor (1) at a right angle to the surface. The display
shows the measured value (current moisture level (18)).
• Move the measuring device to take measurements over a larger surface. The LC display
should show the current measured value as well as the maximum (16) and minimum
measured values (15).
• If necessary, press the MEAS button (5) to freeze a value on the display. "HOLD" appears
on the display (10) in addition to the last measured value. If "HOLD" mode is not terminated
by pressing the MEAS button (5), the measured values are displayed on the LC display for
another 30 seconds before the measuring device switches off automatically.
• Before this time elapses, press the MEAS button (5) in "HOLD" mode to terminate "HOLD"
mode and to carry out further measurements.
• Switch the measuring device off after taking the measurements by pressing the on/off
button (6). If the measuring device is not switched off, it will switch off automatically after
10 minutes. For it to do this, it must not be in "HOLD" mode.
There is a 6.3 mm (1/4") screw connection on the rear of the measuring device
for attachment to a suitable holding device such as a stand. You can carry out
measurements on a stationary measuring device by passing the small part to be
measured past the sensor.
(6) if the measuring device is switched off. To switch
d) Setting the signal function
• The measuring device also shows three non-numeric measuring formats: "DRY" (13),
"RISK"(12) and "WET" (13).
• If the moisture status "RISK" or "WET" is reached, the measuring device will emit a beeping
signal.
- In the "RISK" range, the measuring device emits a signal every 2 seconds.
- In the "WET" range, the measuring device emits a signal four times per second.
• By default, "DRY" is displayed for a moisture level of <30, "RISK" is displayed for 30 - 60 and
"WET" is displayed for a value over 60.
• Different materials have different moisture tolerances. For further information, please see b)
Moisture level limits in "Technical data". You can program your limits as follows:
- If the "HOLD" symbol (10) is displayed, press the SET button (4) to go to signal mode.
- The "RISK" symbol (12) flashes. Press the UP button (7) or the DOWN button (3) to adjust
the lower limit value for "RISK". The value can be set from 0 to 50. The factory setting is 30.
Press the "SET" button (4) to confirm your selection.
- The "WET" symbol (13) flashes. Press the UP button (7) or DOWN button (3) to adjust the
lower limit value for "WET". The value can be set from 50 to 100. The factory setting is 60.
Press the "SET" button (4) to confirm your selection.
- The LC display switches back to the initial mode ("HOLD").
- The limit value is permanently stored until it is changed again.
e) Backlight
• If the backlight is switched off, press and hold the UP button (7) for some time to switch it on.
The LC display is illuminated by white LEDs.
• If the backlight is switched on, press and hold the UP button (7) for a few seconds to switch
it off. The LC display is no longer illuminated.
Maintenance
The housing of the moisture measuring device can be opened for maintenance by a specialist.
• To open the housing, remove the housing screws and the knurled plastic nut on the bottom
shaft by turning anti-clockwise. You can now separate the two halves of the housing. To
reassemble the housing, repeat the process in reverse.

Care and cleaning

• Always disconnect the product from the power supply before cleaning it.
• Never use aggressive detergents, rubbing alcohol or other chemical solutions, as these could
damage the housing or stop the product from functioning properly.
• Use a soft, damp, lint-free cloth to clean the product.
• Use only clean water to the dampen the cloth.
Disposal
a) Product
Electronic devices are recyclable waste and must not be disposed of in the
household waste. At the end of its service life, dispose of the product according to
the relevant statutory regulations.
If a battery is inserted, remove it and dispose of it separately from the product.
b) Batteries
You are required by law to return all used batteries (Battery Directive). Batteries
must not be placed in household waste.
Batteries containing hazardous substances are labelled with this symbol to indicate
that disposal in household waste is forbidden. The abbreviations for heavy metals
in batteries are: Cd = Cadmium, Hg = Mercury, Pb = Lead (indicated on the battery,
e.g. below the waste bin icon on the left).
Used batteries can be returned to local collection points, our stores or battery retailers.
You thus fulfil your statutory obligations and contribute to protection of the environment.