Fuji Electric ZSJ Instruction Manual page 82

4.2.2 Details of periodical check items
Check
Maintenance & check items
Manual calibration
of analyzer
Filling pressure of
standard gas (3.4L cylinder)
Warranty period of
standard gas
Water level of gas
conditioner
Gas conditioner filter
and O-ring
Capillary
Diaphragm type gas
aspirator
Leaks through
Pressure regulator
Catalyst of NO /NO
2
converter (if provided)
Reference gas purifier
Metal mesh filters and
O ring for gas extractor
Gas extractor flanges
Peltier gas cooler
Contamination of
piping or leaks
Water in the gas
conditioner
Analyzer unit
NO and SO scrubber
X 2
inspection (if provided)
INZ-TN2ZSJ-E
Recommended
cycle
1. Perform zero/span calibration (See Section 3.8).
1. If filling pressure is 1MPa or less, replace the standard gas cylinder
(See Section 4.3.9).
Once/week
1. If the primary pressure gauge (right) for the Pressure regulator drops to
2MPa, please order a standard gas cylinder.
If the pressure gauge is 1MPa or less, please replace the standard gas
cylinder with a new one. (See section 4.3.9)
1. If the water level is below A and B of the gas conditioner (See Fig. 4-1),
Once/month
supply water by supplied water bottle (See Section 4.3.10).
1. Replace gas conditioner filter every 6 months or if it turns black
(See Section 4.3.2).
2. Replace O-ring at the gas conditioner filter every 6 months or if it cracks
(See Section 4.3.2).
1. Replace if clogged (See Section 4.3.6).
Once/
1. Wash the diaphragm clean by water if foreign matter is attached, or
6 months
replace (See Section 4.3.4).
2. Turn valves by 90° before using them if they are dirty, or replace valves
after they are used once (see Section 4.3.4).
1. Set the secondary pressure (pressure gauge on the left) to about 29 kPa,
and close the stop valve of the standard gas cylinder.
Read and record the primary pressure gauge (pressure gauge on the right).
After maintaining the condition for about one hour, check the primary
gauge (pressure gauge on the right). If the value of the gauge is not
reduced, there is no leakage.
If leakage is found, retighten the connection or replace the packing.
Note: Before performing the above operation, check that automatic
calibration does not start during the leakage inspection.
Once/
1. Replacement (NO
6 months
Once/year
1. Replacement
1. Replace O-ring once a year or if it cracks (See Section 4.3.1).
2. If the metal filter is dirty, wash it clean (See Section 4.3.2) or replace
the filter (See Section 4.3.1).
If leaks are found via flanges, retighten or replace.
1. Check the operation of the fan.
Once/year
2. Check the temperature. (See Section 4.3.5).
1. Wash it clean or replace.
If water in the gas conditioner is dirty, clean.
1. Regardless of any phenomena that occurred, ask the manufacturer to
perform inspection and maintenance.
1. Replaced when all catalysts become brown or once a year.
Maintenance & check procedures
, once/6months at 7 ppm or lower)
2
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