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ZSME000000016
8
EXCELL PRECISI
ON CO., LTD
3. Maintenance
Note: For certified systems, you must confirm that the system can be
re-calibrated. Before tearing off the seal for maintenance, a new calibration seal is required
for replacing after the maintenance.
Processing the maintenance every the other year. (higher repair and maintenance
frequency for particularly harsh environments)
3.1 Check SP151 to see if it is surrounded by intact and sealed correctly.
3.2 Remove the chassis cover and confirm that the sealing effect, if necessary, to replace
the damaged seal strip.
3.3 Check all internal cables labeled.
3.4 Check the tightness of all connected cables, and repair any loose or damaged
connections.
3.5 Check the internal and external grounding line, tighten it if loose.
4. Troubleshooting
When the electronic circuit system suffered from surge struck, it will operate automatically
and self-recovery. The SP151 service lifespan could be around 20 years, depends on the
lifespan of the protection components of the primary gas discharge tube.
Attention
Field cable that connected to two SP151 of the instrumentation, the isolated lines must be
connected and with a drain of pipeline.
When the isolated lines suffered from the surge, the gas discharge tube will discharge to
the earth to improve the overall protection.