Heyer Modular+ - Electrical Tests

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 Modular
+
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.