DIEL MT200 Lite Manuel D'instructions page 11

WARRANTY RULES
The device MT200 Lite has a warranty period time of 2 years from test date
marked on the label and at the end of this manual.
The warranty is valid only whether damages are due to manufacturing
defects or to a wrong calibration of probes.
We aren't liable for damages due to a wrong wiring of probes or to a
wrong power supply voltage (for example 380 Volt AC).
At any rate we aren't liable for damages due to the bad working of the
equipment.
The reparations in guarantee, except different accord among the parts, will
be effected in our factory in MONTEBELLO (VI).
ATTENTION
Don't effect dielectrical test or partial discharge on the electric machine with
the device inserted, avoid if possible to connect the device directly to the
secondary of the transformer to protect, otherwise the transient overvoltage
can demage the device.
This is always clearer if the power supply voltage of the device is
220 VAC and in case of condensers for the remaking.
TESTING CERTIFICATE
The testing procedure is made as follows:
- Push-buttons working.
- Relays testing contacts.
- Main mechanical checking.
- Calibration and linearization at +17°C and +178°C.
- Testing for 48 hours with variable power voltage supply.
- Insulating testing between earth and relays at 2500 VAC for 30".