7037/7038/7040/7041
User's Guide
58
Problem
Causes and Solutions
The bath does not achieve low
temperatures
This problem can be caused by too much heating or
not enough cooling. Check that the control indicator
glows green showing that the controller is attempting
to cool. The heaters may be disabled as a test by
temporarily removing the heater fuses.
Maximize cooling by switching the cooling on, setting
the cooling power to high, if applicable, and setting the
cooling temperature to 10-15
°
C below the bath set-
point (see the chart on the bath). Insufficient cooling
may be caused by lack of refrigerant because of a
leak in the system.
The controller does not maintain controller
parameters or parameters are reset each
time the power to the unit is removed
Note: Before performing the memory check, you need
to record the controller calibration parameters (found
in the CAL menu of the instrument) and any user-
adjusted parameters that you have changed (such as
the programmable set points and proportional band).
Memory Check
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 Service Center for assistance.
5. After replacing the battery, you must reprogram
the calibration and user-adjustable parameters
into the controller.
Comments
EMC Directive
Fluke Calibration's equipment has been tested to meet the European
Electromagnetic Compatibility Directive (EMC Directive, 89/336/EEC). Selection
of Light Industrial of Heavy Industrial compliance has been based on the
intended use of the instrument. Units designed for use in a calibration laboratory
have been tested to Light Industrial Standards. Units designed to be used in the
"field" have been tested to both Light Industrial and Heavy Industrial Standards.
The Declaration of Conformity for your instrument lists the specific standards to
which the unit was tested.