ThermoWorks 9141 HART SCIENTIFIC FIELD DRY-WELL TEMPERATURE CALIBRATORS - Manual (Page 10)

into a 115 VAC, 60Hz (230 VAC, 50Hz optional), AC only electric outlet.
The power cord of the instrument is equipped with a three-pronged
grounding plug for your protection against electrical shock hazards. It
must be plugged directly into a properly grounded three-prong receptacle.
The receptacle must be installed in accordance with local codes and ordi-
nances. Consult a qualified electrician. DO NOT use an extension cord or
adapter plug.
• If supplied with user accessible fuses, always replace the fuse with one of
the same rating, voltage, and type.
• Always replace the power cord with an approved cord of the correct rat-
ing and type.
• HIGH VOLTAGE is used in the operation of this equipment. SEVERE
INJURY or DEATH may result if personnel fail to observe safety precau-
tions. Before working inside the equipment, turn power off and discon-
nect power cord.
1.2.2 CAUTIONS
To avoid possible damage to the instrument, follow these guidelines.
• Always operate this instrument at room temperature between 41°F and
122°F (5°C to 50°C). Allow sufficient air circulation by leaving at least 6
inches (15 cm) of clearance around the instrument.
• Component lifetime can be shortened by continuous high temperature op-
eration.
• Hart Scientific strongly recommends using the heat shield (Figure 1) pro-
vided while operating the calibrator at temperatures above 200°C. The
heat shield protects the hub on the probes from heat and reduces the risk
of the user being burned by the hub. The heat shield gets very hot and
9141 Dry-well Calibrator
User’s Guide
4