Fuse Replacement - PEWA BENNING MM 2 Instrucciones De Servicio

become pinched between the case back and case front.
- Press the case back and case front together again and reinstall the three
screws.
- Place the BENNING MM 2 back into its protective rubber holster .
see Figure 9:
Please contribute to environmental protection! Batteries should

not be thrown into domestic refuse bins! They can be discarded
at collection points for old batteries or special refuse. Please
contact your municipality for more information.

9.4 Fuse replacement


Remove test leads and turn the power off before opening the
BENNING MM 2! Dangerous voltage!
The BENNING MM 2 is protected from overloading by a built-in 1 A (G-
cartridge) fast blow fuse and a built-in 16 A (G-cartridge) fast blow fuse (see
figure 10).
This is how to replace the fuses:
- Remove the safety test leads from the measured circuit.
- Remove the safety test leads from the BENNING MM 2.
- Turn the rotary switch  to the "OFF" position.
- Remove the protective rubber holster  from the BENNING MM 2.
- Place the BENNING MM 2 on its front side and remove the three screws
from the case back.
- Lift the end of the case back near the input terminals until it gently unsnaps
from the case front at the end nearest to the LCD display .

Do not remove any screws from the printed circuit board of the
BENNING MM 2!
- Lift the printed circuit board from the front case.
- Gently pry one end of the defective fuse loose from the fuse holder.
- Then slide the defective fuse completely out of the fuse holder.
- Install a new fuse of the same rating, fast acting characteristic and size.
- Make sure the new fuse is centered in the fuse holder.
- Replace the printed circuit board into the case front.
- Ensure that the battery leads do not become pinched between the case
back and case front.
- Press the case back and case front together again and reinstall the three
screws.
- Place the BENNING MM 2 back into its protective rubber holster  .
see Figure 10:
9.5 Calibration
To maintain the given accuracy of the measurement readings the instrument
must be regularly recalibrated by our service department. We recommend a
calibration interval of one year.
10. How to use the protective rubber holster
- The safety test leads can be stored by wrapping them around the protective
rubber holster  and then clipping the probes into the protective probe
holders on the rear of the holster  (see figure 11).
- A safety test lead can be clipped into the probe holder on the protective
rubber holster  with the test probe protruding, in order to apply the probe
together with the BENNING MM 2 to a measuring point .
- The rear tilt stand on the protective rubber holster  allows the
BENNING MM 2 to be placed standing upright (for easier display reading)
or hung up (see figure 12).
- The protective rubber holster  can also be hung on a nail if so desired.
see Figure 11:
see Figure 12:
10/ 2004
Battery replacement
Fuse replacement
Wrapping up the safety test leads
Standing up the BENNING MM 2
BENNING MM 2
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