Philips M3000A, Service Manual

Page: 140 / 293

Preventive Maintenance Tasks
124 Maintaining the Instrument
M3015A
NOTE 1. Allow 5 seconds between individual service procedures in order to ensure stable
equipment conditions.
2. When certain Monitor procedures are running (for example, AutoZero or purging),
service procedures are not possible and trying to start them will result in a message
“Service Operation Failed” in the status line on the Monitor. Wait until the Monitor has
completed the current operation, then restart the service procedure.
Preventive maintenance comprises the following activities:
• Perform visual inspection (see “Inspecting the Instrument” on page 122)
• Check the operating time for the pump and CO
2
scrubbers (Pump OpTime).
• If required, (operating time >15,000 hours), replace the pump and the CO
2
scrubber
( units
with serial number prefix DE020xxxxx only)
, and reset the operating time counter.
• Perform barometric pressure check and calibrate, if necessary, see “Barometric Pressure
Check and Calibration” on page 149.
• Perform leakage check, see “Leakage Check” on page 150.
• Perform Pump Check
• Perform flow check and calibrate, if necessary, see “Flow Rate Check and Calibration” on
page 151.
• Perform Noise Check
• Perform CO
2
calibration check; check the date of the last calibration and calibrate, if neces-
sary, see “CO
2
Gas Measurement Calibration Check” on page 152.
• If calibration done, perform CO
2
calibration verification using 2nd calibration gas
• If M3015A has been opened, perform a system safety test, see “Patient Safety Checks” on
page 159.
Tools Required
• Standard tools, e.g. screwdriver, tweezers
• ESD protection equipment
• Electronic flowmeter, M1026-60144
• Gas calibration equipment
•
Cal 1 gas 15210-64010 (5% CO
2
)
•
Cal 2 gas 15210-64020 (10% CO
2
)
•
Cal gas flow regulator M2267A
•
Cal tube 13907A
Required Replacement Part
• Pump assembly and CO
2
scrubber (M3015-29303)