andrews SUPAflo EVO SF60 EVO, Инструкция по установке и обслуживанию

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Maintenance
40
Check physical and chemical water
After some weeks of operation,
check the main physicals and chemi -
cals parameters of water:
pH
7 - 9.5
Hardness
< 20 °fH
Electrical
Conductivity
<150 µS/cm
Chlorides
<50 mg/l
Sulphides
<50 mg/l
Nitrides
<50 mg/l
Iron
<0.5 mg/l
If the values are higher, a suitable
water treatment system must be
used.
Water pressure and quality
Check if the water pressure and
quality meet the requirements.
Consult the chapter “commission -
ing: water and hydraulic system” for
more detailed information.
Water flow rate
Check if the water flow rate through
the boiler is within the limits. Con -
sult the chapter “commissioning:
check water flow” for more detailed
information.
Combustion analysis
Check the combustion at full load
and minumum load, correct the
settings if necessary. An additional
reference check at 50% load is rec -
ommended. Consult the chapter
“commissioning: combustion analy -
sis” for more detailed information.
Gas pressure
Check the dynamic pressure of the
gas supply to the boiler, when the
boiler is running at full load. In case
of a boiler cascade, all boilers should
be running at full load. See technical
data for required values.
Gas tightness check
Check the tightness of all sealed
connections with an approved soap
or electronic analyzer, for example:
•
Test points;
•
Bolt connections;
•
Gaskets of mixing system, etc.
Safety devices
Check the functionality and the set -
tings of all safety devices connected.
Consult the chapter “commission -
ing: Check functionality of safety
devices” for more detailed informa -
tion.
Water physical and chemical check
Gas and water quality
Safety devices