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6
Maintenance
Periodic maintenance is prescribed by Law and must be performed only by a
The frequency of the operations is shown in the specific paragraph.
IMPORTANT
m
Before performing any maintenance or cleaning:
– disconnect the electrical power supply by placing the main switch of the system, of the control panel and of the burner,
OFF
if any, at "
"
– close the fuel supply
– use all Personal Protective Equipment required by current Standards and Legislation
– wait for the generator and the system to cool down.
– Periodically purge (level indicators, probe support, if any, generator) to avoid the build-up of sludge
– check the efficiency of the control and adjustment instruments by carefully examining the electrical parts, the connections
and the mechanical parts (pressure switches);
– carry out burner maintenance (according to the relative instructions)
– check the torque of the flange bolts and the state of the gaskets
– check the state of the internal coating of the doors
– clean the tube bundle and turbulators
– carry out proper pump maintenance (bearings, mechanical seal)
– check the wear of the drain valves, replace them if necessary
– in case of backfire inside the combustion chamber, before a new ignition, check for any damage of the system, mainly close to
the combustion head.
PERIODIC VERIFICATIONS
WATER MONITORING
The system operator present inside the installation room must frequently check the glass indicator in order to avoid that the water
level inside the generator remains above the minimum value indicated by the glass level. Any lowering under the minimum value
shall trigger the two safety level switches.
PRESSURE MONITORING
The operator of the system in the installation room must frequently verify that the pressure of the generator steam remains below
the maximum value indicated on the generator assembly plate; a possible abnormal increase of the pressure must cause, at first,
the intervention of the safety pressure switch, then the opening of the safety valves.
Check intervals are specified in the table. They
Version 24 h operation without continuous supervision
Observation and tests
Safety valves
Level indicators
"TDS-BWD" drain devices (If present)
Shut-off valves
Water load control devices
Low level protection devices
High level protection devices
Temperature and pressure indicators
High pressure protection devices
Protection devices, water delivery quality (if present)
Safety systems
Pressurised parts, piping, flanges, joints
Maintenance
it is recommended to replace the probe ceramic spark plugs annually
MUST be thoroughly respected.
1 day
1 month
O
T(1)
T(2)
O
O
O
T(4)
O
O
T(4)
O
T (5)
O
O
Qualified Personnel
.
3 months
6 months
T(7)
T(8)
T (9)
T (10)
12 months
T(13)
T(13)
57
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