Mitsubishi Electric s-AIRME-G02 Instructions For Installation, Use And Maintenance Manual page 21

1. Zero calibration
The potentiometer adjustment in the figure is performed without applying any gas.
•
Connect the multimeter to the test pin (shown in red in the figure) and GND earth (pay attention to the connection
diagram on the board).
Measure the voltage with respect to earth (GND). Caution: it is mandatory to use the board earth to avoid an earth
loop.
•
Adjust with the potentiometer to 300 mV ± 1%.
•
Then calibrate the gain.
2. Gain calibration
(!) Pay attention to the gas flow rate supplied to the sensor via the flow regulator.
•
Place the calibration adapter on the sensor head
•
Screw the flow regulator onto the calibrated gas cylinder and connect the adapter tube to the cylinder
•
Calibrate the gain with the Service-Tool STL06 or PCE06 according to the attached manual.
3. After successful calibration, close the flow regulator valve and disconnect the calibration adapter from the sensor
head. Wait until the device shows a correct zero value again. Exit Special Mode.
4. Successful calibration must be documented with a report and a label must be placed on the sensor with the date for
the next calibration.
5. Record the maintenance done in the controller of the Rooftop unit.
For calibration procedures see the specific supplier's manual available in the reserved area.
NOTICE:
Refer to the MSR calibration manual for STL06 and PCE06.
Functional test
Carry out the functional test during commissioning and during any maintenance or replacement of the sensor.
Application calibrated gas with a concentration above the set alarm threshold.
The alarm relay (gas presence) and the LED must go into alarm status. The unit will display the gas presence alarm on the
keypad.
Replacing the sensor cartridge
• Disconnect the sensor head.
• Loosen the locking nut.
• Remove the obsolete sensor head.
• Take the new calibrated sensor head out of the original packaging, check the gas type, measuring range and valid calibration
date.
• Insert the sensor head and secure it with the locking nut.
• Connect the sensor head connector to the control board.
• Observe local regulations regarding electronic waste.
Installation, use and maintenance manual 21