Mindray WATO EX-55Pro, Service Manual

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4.14.4 Total Flow Sensor Self Test
NOTE

Perform this test after sensor calibration if the total flow sensor is replaced.
1 Turn on the O2 and N2O supplies, and ensure that O2 and N2O are within the normal
input pressure range.
2. If the system has been powered on and N2O has been adjusted, power off and then on
the system to ensure that the system is in the initial startup state.
3. Set the system to enter the EFCS mode and set the balance gas to N2O.
4. Adjust the N2O flow to a value (for example, 2 L/min) and retain this value for more
than 2 seconds. The N2O flow must not be set to zero in this period.
5. A message [Total Flow Sensor Self Test in Progress] is displayed on the main screen.
After the self test is successfully completed, the message disappears and the N2O flow
reaches the set value stably.
6. If the self test failed, the BFCS is displayed and an alarm [Electronic Flow Control Error]
is reported
4.15 Electrical Safety Inspection
NOTE

Perform electrical safety inspection after servicing or routine maintenance. Before
the electrical safety inspection, make sure all the covers, panels, and screws are
correctly installed.

The electrical safety inspection should be performed once a year.
4.15.1 Auxiliary Electrical Outlet Test
Verify the mains voltage is present at each auxiliary outlet when the anesthesia machine is
connected with power.
4.15.2 Top Light, Auxiliary Gas Supply and Total Flowmeter
Backlight Test
1. Turn on the top-mounted lamps on the bottom side of the top plate.
2. Verify that the top light works at the low brightness level when the switch is set to
I
,
works at the high brightness level when the switch is set to
II
, and top light, auxiliary
gas supply and total flowmeter backlight is turned off when the switch is set to
O
.
3. Verify that the brightness of each LED of top light are the same, and the switch
II
is in
the front of
I
.
2. Verify that the total flowmeter and auxiliary gas supply backlight can be lit on when the
switch is set to
I
and
II
, and the brightness is stable and even.