Maintenance intervals
Table 5: Maintenance intervals
Interval
Maintenance work
Remark
Quarterly
Gas sampling unit:
•
Check fine filter and seals.
•
Clean or renew if necessary.
See SFU Operating Instructions
Instrument air (option):
•
Replace filter elements if required.
See Instrument Air Conditioning Operating
Instructions
Note
Depending on the system, it may be necessary to perform the following maintenance tasks
more frequently:
Check the analysis system.
Instrument air (option):
b
Check oil and water.
b
Clean drains if required.
b
Clean filter housing if required.
b
Check pressure.
See Instrument Air Conditioning Operating
Instructions
One filter pad each in the fan and air outlet
b
Check fine filter and seals.
b
Clean or renew if necessary.
Every 6
months
Gas sampling unit:
•
Replace the filter element and seals.
See SFU Operating Instructions
Related topics
•
SFU Gas Sampling Unit Operating Instructions
•
Instrument Air Conditioning Operating Instructions
10.5
Checking the system
10.5.1
Check assemblies
Procedure
1.
Check complete measuring system (from sample gas sampling to exhaust gas) for
outer damage.
2.
Check sample gas outlet for continuity.
3.
Check system cabinet for cleanness, dryness and freedom from corrosion.
4.
Check grounding conductors are free from corrosion.
5.
Check valve block and pressure reducer unit for leak tightness:
°
No permanent hissing noise should be noticeable.
°
Check no air is escaping from the connections, e.g., with leakage spray
10.5.2
Check external instrument air supply
Procedure
1.
Check pressure, oil, particle and water content according to the specification.
2.
If an external instrument air conditioning is provided:Check condition of filters.
Related topics
•
Specification of utility gases:
•
Filter conditions: See Instrument Air Conditioning Operating Instructions
10
MAINTENANCE
48
O P E R A T I N G I N S T R U C T I O N S | MCS200HW
8021889/1D1T/V3-1/2021-09 | SICK
Subject to change without notice
