novomatics HEMOTRONIC III, Руководство по эксплуатации

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CHEMOTRONIC III
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11. Warnings, Failure detection and hazards
11.1. Warning
A warning message will be printed out if the used calibration of the Std -program
(EC or PC) doesn’t cover the detected change of turbidity. An internal detection
function checks this plausibility of the calibrated range in relation to the real change
of turbidity. If the deviation is to high a message appears on the end of the result
print out. This effect may be caused by unfavourable calibration references or by a
pollution of the optical system. Please check both of them before you perform the
next measurement to grant reasonable results.
11.2. Failure detection
The CHEMOTRONIC provides with safety precautions in case of system fault occurs.
The safety functions performed by the microprocessor control unit recognise the
following failures:
detected failure effect
1. PT100 trouble Temp. Display: "----"
2. Temperature doesn't increase The measurement will be
interrupted after 90 sec.
3. Stirring Motor Trouble Prog. Display: "E2"
4. Cooling Motor Trouble Prog. Display: "E4"
5. Overtemp of Channel1/2 Prog. Display:
"E16"/"E32"
If any of the previous error occurs a current measurement will be interrupted and
the restart disabled with exception of item 2. The device checks continuously the
correct internal temperature state at critical points within a period of some
milliseconds. In this way the CHEMOTRONIC reacts by switching off the heaters in a
short time if any over temperature will be detected, so that the devices offers a
maximum of safety.