Cautions - Fluke 7380 User Manual

7380 Ultra Low Temp Bath
User's Guide
1.2.2
4
• The unit is equipped with a soft cutout (user settable firmware) and a hard
cutout (set at the factory). Check the flash point, boiling point, or other
fluid characteristic applicable to the circumstances of the unit operation.
Ensure that the soft cutout is adjusted to the fluid characteristics of the ap-
plication.

Cautions

• THE DRAIN VALVE MUST BE CLOSED ON THE BACK OF THE
BATH BEFORE ATTEMPTING TO FILL THE TANK WITH
FLUID.
• Always operate this instrument at room temperature between 41°F and
104°F (5°C to 40°C). Allow sufficient air circulation by leaving at least 6
inches (15 cm) of clearance around the instrument.
• DO NOT overfill the bath. Overflowing liquid may damage the electrical
system. Be sure to allow for thermal expansion of the fluid as the bath
temperature increases. See Section 5.3, Bath Preparation and Filling, for
specific instructions.
• No matter what fluid is used, DO NOT exceed the recommended fluid
viscosity.
• Read Section 6, Bath Use, before placing the unit into service.
• DO NOT change the values of the bath calibration constants from the fac-
tory set values. The correct setting of these parameters is important to the
safety and proper operation of the unit.
• The refrigeration may be damaged or the lifetime shortened if the
set-point temperature is set above 60°C for more than one hour with the
refrigeration manually on. Ensure that the refrigeration is off when the
unit is used above 60°C.
• 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 pa-
rameters.
• DO NOT operate this instrument in an excessively wet, oily, dusty, or
dirty environment.
• The unit is a precision instrument. Although it has been designed for opti-
mum durability and trouble free operation, it must be handled with care.
Position the unit before the tank is filled with fluid. Use the handles pro-
vided to move the unit. Due to the weight of the compressor, it may re-
quire two people to safely move the bath. If two people are used, place
one person in the front and one person in the back of the unit, carefully
slide hands under the unit and lift in unison. The area containing the com-
pressor will be heavier than the rest of the unit. Do not move a unit filled
with fluid.
• Most probes have handle temperature limits. Be sure that the probe handle
temperature limit is not exceeded in the air above the instrument.