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Fuse replacement
Fuse replacement must be done by qualified service-trained maintenance personnel who are
aware of the instrument's fuse requirements and safe replacement procedures. Disconnect the
instrument from the power line before replacing fuses. Replace fuses only with new fuses of the
fuse types, voltage ratings, and current ratings specified in this manual or on the back of the
instrument. Failure to do so may damage the instrument, lead to a safety hazard, or cause a fire.
Failure to use the specified fuses will void the warranty.
Servicing
Do not substitute parts that are not approved by B&K Precision or modify this instrument.
Return the instrument to B&K Precision for service and repair to ensure that safety and
performance features are maintained.
Cooling fans
This instrument contains one or more cooling fans. For continued safe operation of the
instrument, the air inlet and exhaust openings for these fans must not be blocked nor must
accumulated dust or other debris be allowed to reduce air flow. Maintain at least 25 mm
clearance around the sides of the instrument that contain air inlet and exhaust ports. If
mounted in a rack, position power devices in the rack above the instrument to minimize
instrument heating while rack mounted. Do not continue to operate the instrument if you
cannot verify the fan is operating (note some fans may have intermittent duty cycles). Do not
insert any object into the fan's inlet or outlet.
For continued safe use of the instrument
Do not place heavy objects on the instrument.
Do not obstruct cooling air flow to the instrument.
Do not place a hot soldering iron on the instrument.
Do not pull the instrument with the power cord, connected probe, or connected test lead.
Do not move the instrument when a probe is connected to a circuit being tested.
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