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GAS LEAK MONITORING AND AIR FILTER CLEANING (STANDARD)
In addition, it is strongly recommended to carry out periodical tests to check any gas leak and air filter cleanliness.
Monitoring
Gas leak detection
Air filter cleaning
LIFECYCLE OF MAIN COMPONENTS
The lifetime of system components is shown in the table below.
These devices must be replaced once their useful lifetime expires:
COMPONENTS
Level switch
Pressure switch
Safety modules
Combustion control unit
Gas valve
Gas pressure switch
Air pressure switch
ATTENTION
a
The electronic level relays present inside the control panel must be replaced after 8 years of operation since their
useful lifetime has expired.
METHODS FOR CHECKING THE SAFETY DEVICES
CHECKING OF THE MINIMUM LEVEL SAFETY LEVEL SWITCHES
Position yourself in front of the control panel, leave the steam outlet valve open with standard withdrawal, turn off the pump by
setting switch to "0", wait for the natural lowering of the generator water level. To accelerate this operation, operate on the sludge
drain valve.
IMPORTANT
m
The two safety devices must trigger when the water level reaches the "minimum" mark indicated on the side of the
glass indicators. Should this not be the case, check the whole level switch, which consists of:
– electronic level regulator; check it is intact and, if not, proceed with replacement
– connection cable between control panel and probe; possible interruption and/or short circuit
– level probe; check for possible breakage of the ceramic part and consequent loss of electrical insulation
– level dipstick; possible scale build-ups preventing the probe-water current passage or possible dipstick detachment.
If check outcome is positive, set pump control to "AUT".
CHECK THE MAXIMUM LEVEL SWITCH (IF ANY)
Set the pump switch on the control panel to MAN and wait for the water level to increase inside the generator.
Check that the pump stops when the maximum point visible in the glass indicator has been reached.
CHECK OF THE SAFETY PRESSURE SWITCH
The safety pressure switch must be calibrated at a pressure lower than that of the safety valve.
To check the correct activation of the safety pressure switch, increase the calibration of the regulation pressure switch(es) and
check burner turning off and shut-off alarm activation from the control panel (visually follow the indication provided by the
manometer).
Maintenance
Modes
Check of the load loss extent at the filter
Max. frequency
12 months
12 months
LIFETIME (years)
8
10
20
10
10
20
20
59
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