Please Note: Calibration can only be adjusted in a positive
direction, as the MicroRPM measures the highest peak value.
Therefore, if the reading was greater than that on the Water
Manometer, the calibration screw must be turned anti-clockwise
rst, before calibration is attempted.
To calibrate the MicroRPM, connect to the Water Manometer as
before, lling the syringe to obtain the required negative pressure.
To change the calibration, slowly turn the calibration screw in
a clockwise direction until the same value is displayed on the
MicroRPM.
Servicing
If your unit requires service or repair please see page 144 for
contact details.
A full service manual including circuit diagrams and parts list is
available on request.
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