Fukuda Denshi VaSera VS-1500, Service Manual

Page: 50 / 216

Chapter 5
Maintenance
5-18
Confidential Copying Prohibited
5.3.12 Confirming Pressure Accuracy
Use this function to confirm pressure accuracy.
5.3.12.1 Check Method
CAUTION
Be sure not to apply excessive pressure when applying pressure. The pressure
gauge could break.
(1) Connect the following items to the VS-1500.
・ A calibrated sphygmomanometer or pressure gauge
・
500ml air tanks
・ Inflation bulb
・
T-tubes
・ Air tubes
Connect the air tubes to the air connectors on the instrument. Perform a test for each site.
Consult our head office for information on how to set up the air tanks and the T-tubes.
(2) Press the (Menu) key to open the [Top Menu], then touch [Initial Setting/Maintenance] Æ
[Maintenance] Æ [OK ( ↵ )] Æ [Official Approval Mode] to open the [Official Approval Mode]
window.
(3) Disconnect one air tube connection to confirm that the pressure measurement units on the
VS-1500 and pressure gauge return to atmospheric pressure.
(4) Touch [Sensor Offset] to check that the pressure value in the [Official Approval Mode] window
indicates 0 mmHg.
(5) Reconnect the disconnected air tube.
(6) Use the inflation bulb to apply a pressure of 50 mmHg and maintain this pressure. Compare the
pressure value in the [Inspection Mode] window with that indicated by the pressure gauge.
(7) Confirm that the pressure difference is ±3 mmHg or less.
(8) Also compare the pressure values at 100, 150, 250 and 280 mmHg pressure.
(9) Touch [Return] to return to the [Maintenance menu].
CAUTION
If the pressure difference is ±3 mmHg or more, return the instrument to our factory for repair.
500ml air tank
Sphygmomanometer
or pressure gauge
Inflation bulb
T-tubes
Air tube