Maintenance And Repair - Siemens SITRANS FC720 Operating Instructions Manual

17 Maintenance and repair

Applicable country-specific regulations for opening and repairing electrical devices must
be observed.
Risk of injury and damage to the flow meter due to ignition after sparking,
DANGER
if there is mechanical impact
▶ Avoid strong mechanical impacts on the flow meter during maintenance work.
Risk of injury due to electrical shock, as well as damage to the flow meter,
WARNING
due to insufficiently trained personnel
▶ Only have skilled personnel maintain and repair the flow meter.
Risk of injury due to electrical shock, as well as damage to the flow meter
WARNING
▶ Do not perform maintenance outdoors during rain.
Risk of injury from slipping or falling flow meter
WARNING
▶ Observe notes about the transport of the flow meter in chapter Transport [} 20];
Risk of injury due to electrical shock, as well as damage to the flow meter,
WARNING
due to maintenance work in areas at risk of explosion
▶ When maintaining the flow meter in areas at risk of explosion, compliance with the
Risk of injury from electrical shock due to insufficiently closed housing
WARNING
▶ After completion of the maintenance work, check that the housing covers of the
Risk of open/ close the transmitter cover
WARNING
▶ Please be sure to handle the transmitter cover carefully so that there are no
Risk of opening the gas-filling-plug of the sensor
WARNING
▶ When opening the gas-filling-plug of the sensor, ensure that the sensor housing is
Risk of damage to the flow meter due to electrostatic discharge (ESD)
NOTICE
▶ When performing maintenance work on the flow meter, appropriate ESD protective
these also apply accordingly during maintenance work.
applicable Explosion Proof Type Manual is mandatory.
transmitter have been properly installed.
damages and foreign matter adhesion at its thread and O-ring when it is opened or
closed. Keep checking their condition and clean the threads in case of adhering the
foreign matter. Replace the cover in case the threads receive damages. Replace the
O-ring if there is any scarring or transformation and apply silicone based grease at
the O-ring in case of the shortage and exhaustion of grease.
pressure-less and free of hazardous fluids.
measures must be taken.
A5E52748387-AA, 2023/09
FC7x0
Maintenance and repair
147 / 180