Maintenance
29
4
Maintenance
Periodic maintenance is an obligation required by the safety Legislation and duration of the appliance, and it must only be
entrusted to professionally qualified personnel.
The frequency of the operations is shown in the specific paragraph.
m
IMPORTANT
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,
if any, at "
OFF
"
–
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);
it is recommended to replace the probe ceramic spark plugs annually
–
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.
PERIODIC VERIFICATIONS
The frequency of verifications is shown in the table.
It MUST be strictly observed
.
Observation and tests
6 hours
1 day
1 week
1 month
3
months
6
months
12
months
Safety valves
O
T(9)
Level indicators
T(4)
"TDS-BWD" Unloading devices
(if present)
T(5)
Shut-off valves
O
T(10)
Water load control devices
O
Low level protection devices
(if present)
T(1)
O
T(15)
High level protection devices
(if present)
T(3)
Temperature and pressure indicators
O
High pressure protection devices
O
T(2)
T(15)
Protection devices, quality of water in generator
(if present)
O
T(7)
Protection devices, quality of supply water
(if present)
O
T(11)
Safety systems
O
T(12)
Pressurised parts, piping, flanges, joints
O
Temperature, pressure control devices
O
T(13)
Load system, pumps/valves
O
T(8)
Analysis of the water quality
T(6)
Burner control (combustion)
O
T(14)
O Observe the proper operation of the generator in all its parts.
There must be no leakage from the safety valves.
There must be no leakage from the shut-off valves, piping, flanges, joints, pressurised parts in general.
Visually check, through the glass indicators, the correct water level. Check pump(s), modulating valve (if installed).
Verify the correct display and adjustment of temperatures/pressures.
Check for alarms from the protection devices.
Verify the proper operation of the burner.
