5. MAINTENANCE
The Apex system requires some routine maintenance.
Thissectionprovidesinformationaboutthefollowing:
• Schedule for routine maintenance
• Procedures for routine maintenance/parts replacement
5.1 ROUTINE MAINTENANCE SCHEDULE
The following table lists the recommended Apex system maintenance tasks and their frequency.
Sensor Type Frequency Maintenance Action Equipment
Required
All models On overrange Calibrate the Test gas,
gas alarm system (see regulator,
Chapter4). ow
Replace the sensor housing.
cartridge if necessary.
All models On suspected Calibrate the Test gas,
exposure to system (see regulator,
contaminating Chapter4). ow
gases Replace the sensor housing.
cartridge if necessary.
All models 3monthly Checkthelters/cartridge
face for cleanliness.
Replace if required.
All models 6 monthly Calibrate the Test gas,
system (see regulator,
Chapter4). ow
housing.
Cl2, O2, and NH3 Annually Replace the sensor
cartridge if required.
H2S, CO 2 yearly Replace the sensor
cartridge if required.
Note: NoroutinecalibrationisrequiredfortheTransmitterUnitorCertiedSensorelectronics.
Only the cartridge can be re-calibrated. This procedure is also sometimes referred to as
system or sensor calibration.