Maintenance - Aim-TTI BS407 Bedienungsanleitung

The Manufacturers or their agents overseas will provide a repair service for any unit developing a
fault. Where owners wish to undertake their own maintenance work, this should only be done by
skilled personnel in conjunction with the service manual which may be purchased directly from
the Manufacturers or their agents overseas.
Cleaning
If the instrument requires cleaning use a cloth that is only lightly dampened with water or a mild
detergent.
WARNING! TO AVOID ELECTRIC SHOCK, OR DAMAGE TO THE INSTRUMENT, NEVER
ALLOW WATER TO GET INSIDE THE CASE. TO AVOID DAMAGE TO THE CASE NEVER
CLEAN WITH SOLVENTS.
Calibration
To ensure that the accuracy of the instrument remains within specification the calibration must be
checked (and if necessary adjusted) annually. This requires access to accurately known standard
resistors; the instrument is adjusted to obtain the correct readings from these resistors. This
instrument has independent calibration for each range.
Fuses
The transformer primary is protected by a non-resetting thermal fuse inside the windings. It can
only be replaced by fitting a new transformer.
The battery charge and discharge circuits are protected by self-resetting devices. If it is
suspected that one of these has tripped, disconnect the unit from the mains supply, switch it off
and wait ten minutes. It is likely that any such tripping indicates an internal fault and the unit
should be serviced by a competent repair facility.

Maintenance

11