Martindale ET4000 / ET4500 Maintenance
68
The position of the fuses can be seen in Figure 3.4: Battery and fuse compartment in
chapter 3.3 Instrument rear.
8.3 Test lead replacement
If the test leads become damaged they should be replaced.
The replacement test leads must have the same (or better) overvoltage category rating
as the TL36 and TL207 test leads supplied.
8.4 Cleaning
If contamination is found, clean with a damp soft cloth and if necessary a mild detergent
or alcohol. Do not use abrasives, abrasive solvents, or detergents which can cause
damage to the unit. If a mild detergent is used, the unit should subsequently be
thoroughly cleaned with a water dampened soft cloth. After cleaning, dry and allow to
remain in a dry environment for 2 hours before use.
8.5 Periodic calibration
To maintain the integrity of measurements made using your instrument, Martindale
Electric recommends that it is returned at least once a year to an approved Calibration
Laboratory for recalibration and certification.
Martindale Electric is pleased to offer you this service. Please contact our Service
Department for details.
Email: service@martindale-electric.co.uk
Tel: 01923 650660
8.6 Service
There are no user serviceable parts in this unit other than those that may be described
in section 8. Return to Martindale Electric if faulty. Our service department will quote
promptly to repair any fault that occurs outside the guarantee period.
Before the unit is returned, please ensure that you have checked the unit, batteries,
leads and poor connections.
8.7 Storage conditions
The instrument should be kept in warm dry conditions away from direct sources of heat
or sunlight, and in such a manner as to preserve the working life of the unit. It is strongly
advised that the unit is not kept in a tool box where other tools may damage it.
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