EN.IO.APC.APR.ALW
Revision 02.A.005/2020.06
33
10. MAINTENANCE
10.1. Periodic inspections
Periodic inspections shall be carried out in accordance with applicable standards. During the inspec-
tion, the condition of the pressure (absence of loosened elements and leaks) and electrical (check of
connections reliability and condition of gaskets and glands) connectors, condition of separating dia-
phragms (tarnish, corrosion) and stability of fixing of the housing and mounting bracket (if used) shall
be checked. Check the processing characteristics by performing the operations specific for the CALI-
BRATION and possibly CONFIGURATION procedure.
10.2. Non-periodic inspections
If the transmitter at the installation site has been exposed to mechanical damage, pressure overload,
hydraulic pulses, overvoltage, deposits, medium crystallization, undercutting of the diaphragm, or in-
correct operation of the transmitter is detected, the device should be inspected. Check the condition
of the diaphragm, clean it, check the electrical functionality of the transmitter and the processing
characteristics.
If there is no signal in the transmission line or its value is improper, check the supply line,
connection status on terminal blocks, connectors, etc. Check if the supply voltage and
load resistance are correct.
10.3. Cleaning/washing
To remove impurities from the external surfaces of the transmitter wipe it with a cloth dampened in
water.
10.3.1. Diaphragm cleaning
The only possible method of cleaning the transmitter diaphragms is to dissolve the sludge produced.
Do not remove deposits and impurities from the transmitter diaphragms, which are
formed during operation, mechanically using tools, since the diaphragms and the trans-
mitter can be damaged.
10.4. Spare parts
Parts of the transmitter that may be worn or damaged and thus replaced: cover seal.
Other parts in the case of ATEX, PED type of transmitter may be replaced only by
the manufacturer or an authorized representative.
10.5. Repair
Faulty or non-operational transmitter shall be provided to the manufacturer.
10.6. Returns
In the following cases, the transmitter should be returned directly to the manufacturer:
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need for repair;
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need for factory calibration;
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replacement of improperly selected/shipped transmitter.
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