The Factory Reset Sequence should be performed only by authorized personnel
if no other action is successful in correcting a malfunction. You must have a
copy of the most recent Report of Test to restore the test parameters.
DO NOT
operate this instrument in an excessively wet, oily, dusty, or dirty en-
vironment or place in locations where hot or cold liquids are splashed on it.
Most probes have handle temperature limits. Be sure that the probe handle tem-
perature limit is not exceeded in the air above the system controlled by this
instrument.
The instrument and any thermometer probes used with it are sensitive instru-
ments that can be easily damaged. Always handle these devices with care. Do
not allow them to be dropped, struck, stressed, or overheated.
DO NOT
use this instrument in a system that exceeds the current capability of
the instrument as listed in Section 2.1, Specifications, on page 9.
DO NOT
replace fuse(s) with one of a higher current rating or type. Always re-
place the fuse with one of the same rating, voltage, and type. The current rating
listed in Section 2.1, Specifications, on page 9 is the maximum for the instru-
ment. If the instrument is connected to a system which uses less than the maxi-
mum capability of this instrument, the fuses need to be changed in order to be
correct for the system. Once the instrument is connected to the system, the sys-
tem current needs to be measured or calculated and the appropriate fuse size
and characteristics selected. Section 4.5, Fuses, on page 15 can be used as a
guide for selecting a fuse.
Once the correct fuse type and rating is selected, the following information is
applicable. The instrument is equipped with operator accessible fuses. If a fuse
blows, it may be due to a power surge or failure of a component. Replace the
fuses once. If a fuse blows a second time, it is likely caused by failure of a
component. As a test disconnect the output device (heater) and apply power to
the rest of the system. Check to see if the fuse(s) blow. If the fuse(s) blow only
when the output device (heater) is connected, the fault may be in the heater. If
not, contact an Authorized Service Center (see Section 1.4).
If a mains supply power fluctuation occurs, immediately turn off the instru-
ment. Power bumps from brown-outs and black-outs can damage the system.
Wait until the power has stabilized before re-energizing the instrument.
For best accuracy, the instrument needs to be calibrated with the system it
controls.
1.4
Authorized Service Centers
Please contact one of the following authorized Service Centers to coordinate
service on your Hart product:
Fluke Corporation, Hart Scientific Division
799 E. Utah Valley Drive
5
1 Before You Start
Authorized Service Centers
