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Page 83
STAT
IM 2000/2000S
Service Guide
96-106775 Rev 5.0
4. STAT
IM 5000 Calibration
STAT
IM
5000/5000S/5000 G4 Service Guide
1. Reference voltage verification / adjustment
To verify / adjust the reference voltage:
1. Turn the unit
oFF.
2. Connect the Control Box (1) to the Controller Board (2).
3. Connect the digital voltmeter (4) to the Vref terminals on the control box.
4. Set the voltmeter to read DC Volts with a resolution of 1mV.
5. Power the unit
oN
.
6. Adjust the Vref potentiometer until Vref is 2.520 V ± 0.001.
7. Once Vref is adjusted, apply a drop of non-conducting lacquer or nail polish to the
adjustment screw of the potentiometer.
2. Steam generator thermocouple calibration
To calibrate the steam generator thermocouple:
1. Turn the unit
oFF
and install a calibration jumper on Controller Board header W1.
2. Turn the unit
oN
. The LCD should appear and be similar to the diagram below:
3. To start a steam generator (self-calibrating) cycle,
press and hold
the UNWRAPPED cycle
button on the control box and press the
START
button. An asterisk * will appear next to
the message ‘CALIBRATING’.
4. If the asterisk * does not appear, press the
SToP
button on the control box twice to reset
the unit. Turn the power switch
oFF
then
oN
again.
5. Hold down the UNWRAPPED cycle button on the control box and press the
START
button
to start the self-calibration again.
6. During the steam generator warm up (before the cassette temperature reaches 100°C),
check that the displayed chamber temperature matches the reading on the digital
thermometer to within 2°C.
7. If the value is greater than 2°C adjust the TC-ADJ potentiometer (9) so that they match.
8. As the cycle proceeds, the chamber temperature reaches the sterilization temperature,
drops to 115°C and then regains sterilization temperature.
9. After 20-40 seconds, a long beep will sound indicating that steam generator calibration is
complete.
10. The number in the upper left-hand corner of the LCD has changed to display the new
steam generator offset value.
00>>CALIBRATING*<<F9
+1.00°C 20.00°C
Steam generator offset
value in hexadecimal
Difference between steam generator
and chamber temperature
Chamber temperature
Chamber offset value in hexadecimal
E8>>CALIBRATING*<<F5
+00.00°C 135.00°C
Example