13.TROUBLESHOOTING
Caution
•When trouble cannot be remedied even after following the instruction manual, contact your dealer or Fuji's service station (serivice engineer). Do not disassemble the device, as it results in electric shocks or injury.
13.1Troubleshooting of instrument
Trouble | Probable location | Check item | Remedy | |
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Decrease of sample | Filter (primary, second- | Check if filter element is clogged. | Clean or replace element. | |
gas flow rate |
| ary, tertiary filters) |
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| Diaphragm type aspirator | Check if aspirator is working normally. | Clean or replace. |
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| Check for abnormal sound or vibration. | Retighten screws or replace |
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| aspirator. |
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| Electronic gas cooler | Check if cooler is working normally, | Clean or replace. |
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| check cooling temperature and check for |
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| clogging of flow path. |
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| Conditioner | Water decreases in lower chamber. | Inject water and check the |
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| capillary (bypass). |
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| Gas leakage | Check for gas leakage in piping after | Retighten or replace parts. |
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| aspirator or at joints. |
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| Flowmeter | Check for accumulation of drainage or | Clean the flowmeter. |
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| dust in flowmeter. Check adjustment of | Adjust needle valve. |
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| needle valve. |
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| Piping, capillary | Check for bent or clogged piping. | Replace. |
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Increase of bubbling | Bypass flow path | Check for capillary. | Clean or replace. | |
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flow rate |
| Piping | Check for deviated joint. | Connect properly. |
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Rise of sample gas | Pressure control valve | Pressure control valve is clogged. | Disassemble and clean. | |
flow | (Note) |
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Indicated value is | Gas leakage | Check for gas leakage in parts before | Retighten or replace parts. | |
abnormal. |
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| aspirator such as secondary coarse filter |
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| holder, piping, joints, etc. |
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| Diaphragm | Check if aspirator is normally operating | Clean aspirator or replace |
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| type aspiration | and sample gas is flowing at set value. | parts such as diaphragm or |
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| value |
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| Adjust sample gas flow. |
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| Conditioner | Check if water level is normal. | Supply water. |
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| Check if air is aspirated. | Check primary filter. |
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| Dissolution of gas | Check for accumulation of drainage in | Clean, and tilt piping so |
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| piping. | drainage does not accumulate. |
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| Sampling pipe | Check if SUS pipe is used (for SO2 | Change to teflon tube. |
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| analyzer). |
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Note) Pressure control valve is used.
– 43 –