3 months – Inspect temperature probe for fraying or other damage. 3 months – Inspect SpO2 cord for fraying or other damage. 3 months – Inspect accessories for fraying or other damage. 1 year Blood pressure calibration – Verify each pressure is within "3 mmHg of the target pressure (except for 0 mmHg which should be within "1.0 mmHg). Temperature calibration check. SpO2 accuracy – from 70% to 100%. Pogledaj 27. Stranu u manual, tamo pise da su sve procedure navedene u tom poglavlju deo routine preventive maintenance-a. Doduse nije naveden interval, pa ne znam da li treba da se potrazi u onom fajlu sa intervalima.