6109A/7109A
Operators Manual
74
Troubleshooting
Refer to Table 13 for help with issues with Product operation. If the problem is
still not resolved, contact Fluke Calibration Service. See
Contact Fluke
Calibration
.
Table 13. Troubleshooting
Problem Actions
The Calibration Bath does not turn on
Allow 60 seconds for the CPU and display to start up.
Screensaver may be active. Push any key to wake the
display.
Check the mains power cord.
Check the fuses.
Check the facility’s circuit breaker.
The Calibration Bath does not heat or
cool
See Set the Setpoint to enable control.
Check the Ramp Rate setting.
Check that the tank is filled with fluid.
Check the Cutout Temperature setting.
The display indicates “Cutout”
Check the Cutout Temperature setting.
Do not set the setpoint higher than the cutout setting.
The Calibration Bath heats or cools
slowly
Check the Ramp Rate setting.
Check the ac supply voltage.
The Calibration Bath heats or cools at
less than 100 % power
It is normal for the Product to heat or cool at less than
100 % to avoid excessive overshoot.
Check the Ramp Rate setting.
Check the AC supply voltage.
The fluid temperature is not accurate or
steady
Enable control.
Check that the fluid’s viscosity is within the limit.
Set the Control Sensor to Internal.
Check that the control parameters are at their default
values.
The ready indicator does not turn green.
Check that the Stability Window setting is at least
0.025
°
C.
Check that the fluid’s viscosity is within the limit.
The stir motor is not turning
Enable control.
Check that nothing obstructs the stir propeller.
Turn off the power, wait 30 seconds, then turn on the
power. See if the stir motor turns briefly during the self-
check. Look for a self-check fault message.
Stirring causes fluid to splash
Check that the tank is filled properly.
Reduce the stir speed.
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