Philips M3000A, Service Manual

Page: 170 / 293

Preventive Maintenance Tests
154 Testing the Instrument
NOTE When the PumpOpTime has been reset an INOP will be generated: “CO
2
OCCLUSION”. To
clear this INOP, you must perform a flow check and store the flow in Service Mode (select
“Store Flow”).
Documenting CO
2
Test Results
Test Expected Test Results What to record on service
record
Barometric Pres-
sure Check X1 = difference between the reference pressure and the
measured ambient pressure displayed on the M3046A
(X1<12 mmHg) PCO2:P/
X
1/
X
2/
X
3/
X
4/
X
5/
X
6/
X
7/
X
8
or
PCO2:F/
X
1/
X
2/
X
3/
X
4/
X
5/
X
6/
X
7/
X
8
P = passed, F = failed
X1: xx (two digits)
X2: x.x
X3: x.x
X4: xxx
X5: x.x
X6: x.x
X7: x.x
X8: x.x
Leakage Check
parts 1 and 2 X2 = Value of part 1 leakage check on Flowmeter
(X2< 4.0 ml/min)
X3 = Value of part 2 leakage check on Flowmeter
(X3< 4.0 ml/min)
Pump Check X4 = difference in pressure between cell pressure and
ambient pressure displayed on the M3046A during occlu-
sion (X4 >120 mmHg)
Flow Check X5 = difference between measured value and 50.0 ml/min
(X5<7.5 ml/min)
Noise Check X6 = Noise Index displayed on M3046A (X6<3.0)
CO
2
Gas Calibra-
tion Check
X7 = difference between measured CO
2
value and calcu-
lated value, based on 5% CO
2
cal. gas. (X7 < 2.6 mmHg)
CO
2
Cal Verifica-
tion
X8 = difference between measured CO
2
value and calcu-
lated value, based on 10% CO
2
cal. gas.
(X8 < ± {0.07 x value calculated})