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14
Maintenance
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 Guide, which may be purchased directly from the
Manufacturers or their agents overseas.
14.1 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.
14.2 Fuse
The correct fuse type is:
10 Amp 250V HBC time-lag (T), 5 x 20mm
Make sure that only fuses of the required rated current and specified type are used for replacement.
The use of makeshift fuses and the short-circuiting of fuse-holders is prohibited.
To replace the fuse, first disconnect the instrument from the AC supply. Remove the 2 cover
securing screws at the rear and slide back and lift off the cover. Replace the fuse with one of the
correct type and refit the cover.
Note that the main function of the fuse is to make the instrument safe and limit damage in the event
of failure of one of the switching devices. If a fuse fails it is therefore very likely that the replacement
will also blow, because the supply has developed a fault; in such circumstances the instrument will
need to be returned to the manufacturer for service.
14.3 Calibration
To ensure that the accuracy of the instrument remains within specification the calibration must be
checked (and if necessary adjusted) annually. The procedure is detailed in the Service Guide, which
also lists the calibrated test equipment required.
14.4 Firmware Update (MX180TP only)
The firmware of the MX180TP can be updated through the USB port using a PC software utility
available from the manufacturer. This uses a HID (human interface device) USB class driver which
will already be installed on any PC with a USB port. Instructions for the update procedure are
provided with the PC utility and the firmware file.
