7 Maintenance
55
7
Maintenance
To use the exhaust gas analysis instrument for a long period of time in a good condition,
maintenance and inspection are always necessary.
The maintenance interval depends on the using condition as well as on the sample gas
property. In the beginning of the operation, follow the recommended interval shown below so
that it works also for the pre-maintenance.
After that, economical maintenance/inspection works will be discussed according to the actual
operating condition as necessary.
7.1
Daily Inspection
According to the situation, periodically perform the inspection by 1 to 7 days of interval.
At calibration be sure to check if the specified performance is satisfied.
Q
Analyzer
Q
Sampling system
Note
For replacement and cleaning of each part, refer to " 7.3 Maintenance of Sampling Devices " (page 61).
CAUTION
High voltage is being applied to the Electrical Leakage Breaker.
Never touch the terminals when the power is on.
CAUTION
Calibration gas is under high pressure. Handle it carefully.
• Check the installation state of the pressure regulator.
• Check the temperature of installation site.
(Storage and operating temperature is specified as 40ºC or less based on high-
pressure gas regulations.)
Check item
Contents of inspection
Reference
Sample gas flow
Confirm a flow rate of 0.6 L/min ±0.1 L/min
Existence of alarm generation Confirm that the alarm is not generated.
page 54
Check item
Contents of inspection
Reference
Secondary filter 1, 2
Check for dirt on surface. If dirty, replace it.
page 62
Electronic cooler
Confirm that the temperature of electric cooler is 0ºC to 8ºC
(under 15ºC if the temperature inside the cabinet is over 40ºC) in
the ANALOG INPUT 2 screen (Fig. 31 page 36).
Also confirm the fan rotation.
page 36
Drain trap 1
Replace the primary filter element if the water causes bubbling.
page 61
If the water level is low, perform watering until the water starts
being discharged from the drain trap 2.
(The water level might be low by drying the atmosphere in
winter.)
page 8
Mist catcher
Check for dirt. If dirty, replace it.
page 64
Calibration gas
If the residual pressure is below approximately 1 MPa, replace
the gas.
page 19
