Mindray WATO EX-55Pro, Service Manual

Page: 165 / 474

5-17
5.3.3 PEEP Valve Test
A PEEP valve test is conducted by checking whether the power supply voltage and drive and
feedback voltage of the PEEP valve are within the normal range. For the PEEP valve test screen,
refer to
5.3.2 Insp. Valve Test
.
5.3.4 Safety Valve Test
The safety valve test process is as follows: In the condition where drive gas is available, after
opening and then closing the safety valve, read the status of the gas drive pressure switch to
determine the actual status of the safety valve. If the status of the drive gas pressure switch detects
no pressure after you open the safety valve, or if the status of the drive gas pressure switch detects
pressure after you close the safety valve, the safety valve test fails. For the safety valve test screen,
refer to
5.3.2 Insp. Valve Test
.
5.4 Review Logs
Review logs include fault logs, maintenance logs, operation logs, and alarm logs. Fault logs record
faults of the machine that do not trigger a technical alarm. A maximum of 500 such records can be
stored. Maintenance logs record maintenance operations on the machine. A maximum of 500 such
records can be stored. Alarm logs record the physiological and technical alarms triggered on the
machine. A maximum of 500 such records can be stored. For details, see the following figure: