Preventive Maintenance
65
6
Verify N
2
O:O
2
ratio system.
a
Set the O
2
and N
2
O valves to minimum.
b
Rotate the N
2
O valve throughout its range from 0.5 to 10 l/min.
c
Using the readings from the flow tube, verify that no less than 25%
±
5% O
2
can be achieved
at any N
2
O flow rate.
4.3.4.3 Electrical Tests
1
Check convenient AC outlets.
a
Verify AC voltage is present at each AC outlet with the Mains switch in the ON or
OFF position.
CAUTION:
Perform the following electrical safety inspection as the last step after completing a
repair or after routine maintenance.
2
Conduct electrical safety inspection.
3
Test of electric safety according to IEC 601-1:
a
Test the protective conductor resistance.
b
For the measurement, use a test set according to IEC 601-1.
c
The maximum protective conductor resistance must not exceed 0.1 Ohms.
d
Enter the result into the test protocol.
4
Test the leakage current.
a
For the measurement use a test set according to IEC 601-1.
b
Before the measurement of the leakage current, withdraw the power supply cable of all units
form the convince receptacles at the rear side of the apparatus.
c
The maximum leakage current must not exceed 500µA (0.5 mA).
d
Enter the result into the test protocol.
5
Test the insulation resistance.
a
For the measurement, use a test set according to IEC 601-1.
b
The insulation resistance must be higher than 70 MOhms.
c
Enter the result into the test protocol.
Summary of Contents for Modular+
Page 1: ...HEYER Modular Anesthesia System Service Manual Rev 2 1 0 Software version Service software 1 8...
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Page 26: ...Repair Information 26 2 14Ventilator pneumatic Fig 6 Ventilator pneumatic...
Page 90: ...Preventive Maintenance 90...
Page 98: ...Preventive Maintenance 98 Fig 45 How to measure the voltages U1 and U2...
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