Comments; Emc Directive - Fluke 7080 User Manual

7080/7081 Calibration Bath
User's Guide
13.2
13.2.1
68
Problem Causes and Solutions
The bath does not
Too much heating. Check that the control indicator glows green showing that
achieve low temperatures
the controller is attempting to cool. The heaters may be disabled as a test by
temporarily removing the heater fuses.
Check the refrigeration system by switching the heater to low, switching the
cooling on, setting the cooling power to high, setting the cooling pressure to ap-
proximately 7 PSI, and setting the cooling temperature to 10-15°C below the
bath set point. The bath should then cool as quickly as possible to the new set
point.
Insufficient cooling. This may be caused by lack of refrigerant because of a
leak in the system.
Power Up The unit is equipped with external operator accessible fuses. If a fuse blows, it
may be due to a power surge or failure of a component. Replace the fuse once.
DO NOT replace the fuse with one of a higher current rating. Always replace the
fuse with one of the same rating, voltage, and type. If the fuse blows a second
time, it is likely caused by failure of a component part. Contact an Authorized
Service Center (Section 1.3) for assistance.
The controller does not
Note: Before performing the memory check,you need to record the controller
maintain controller pa- calibration parameters (found in the CAL menu of the instrument) and any
rameters or parameters
user-adjusted parameters that you have changed (such as the programmable
are reset each time the set points and proportional band).
power to the unit is
Memory Check
removed
Doing a memory check is the easiest way to verify the ability of the battery to
maintain controller parameters.
1. Power off the instrument.
2. Disconnect the instrument from AC power for 10 seconds.
3. Reconnect the AC power and power on the instrument.
4. If the display shows InIT and/or the cycle count shows a low number such as
0002, the battery is spent and should be replaced. Contact an Authorized Ser-
vice Center for assistance.
5. After replacing the battery, you must reprogram the calibration and user-ad-
justable parameters into the controller.

Comments

EMC Directive

Hart Scientific's equipment has been tested to meet the European Electromag-
netic Compatibility Directive (EMCEMC Directive, 89/336/EEC). The Decla-
ration of Conformity for your instrument lists the specific standards to which
the unit was tested.
The instrument was designed specifically as a test and measuring device. Com-
pliance to the EMC directive is through IEC 61326-1 Electrical equipment for
measurement, control and laboratory use – EMC requirements (1998).
As noted in the IEC 61326-1, the instrument can have varying configurations.
The instrument was tested in a typical configuration with shielded RS-232
cables.