Page 105
STAT
IM
2000/2000S Service Guide
96-108639 Rev 3.0
5. STAT
IM
2000S Calibration
STATIM 2000/2000S/2000 G4 Service Guide
1. Reference voltage verification / adjustment
To verify / adjust the reference voltage:
1. Ensure the unit is OFF.
2. Connect the control box (1) to the controller board (2).
3. Connect the digital voltmeter (5) 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 check that there is 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 steam generator offset value.
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. If the controller board is new and has never previously been calibrated, adjust the TC-ADJ
potentiometer (8) until the chamber thermocouple offset reads F5. If the controller board
has previously been calibrated this adjustment is not necessary.
7. As the cycle proceeds, the chamber temperature reaches the sterilization temperature,
drops to 115°C and then regains sterilization temperature.
8. After 20 - 40 seconds, a long beep will sound indicating that steam generator
thermocouple calibration is complete. The number in the upper left-hand corner of the
LCD has changed to display the new steam generator offset value.
00 00
Steam generator offset
value in hexadecimal
Difference between steam generator
and chamber temperature
Chamber temperature
Chamber offset value in hexadecimal
99 F1
Measured
chamber
pressure in kPa
Pressure
transducer
hexadecimal offset
---
20.00°C+1.00°C
Calculated chamber pressure
(for temperatures > 118°C)
D0 0099 F1---
20.00°C+1.00°C
The LCD appears:
example
To Next Page
Loading...
