Strebel S-CB Px 120, Руководство по установке, эксплуатации и техническому обслуживанию

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S-CB Px 120 Manual 103
Gas/air ratio
With every service check and/or maintenance of the boiler always check the gas/air ratio by measuring the CO
2
percentage (flue gas) at the maximum and minimum load of the boiler. If necessary adjust these values. See for
information chapter 15 “Adjusting and setting the burner”.
Pump
Check the electrical parts and the motor of the pump for a correct functioning. The pump must generate a suffi-
cient water flow over the (heat exchanger of) the boiler. When the pump produces noise, is operational for more
than five years or has signs of water leakage it is recommended to replace the pump as a precaution.
When defects and abnormalities are found by the service engineer during service and maintenance and
these are not repairable, this information should be reported to the owner/end-user of the installation.
Also the owner/end-user should be advised how to fix these defects and these defects should be report-
ed in the service report / log file of the boiler.
During service and maintenance the gas, supply air, flue gas and condensate connections are discon-
nected, checked and replaced. Make sure that all these components are mounted correctly before com-
missioning the boiler again.
Reassembling the burner door correctly onto the heat
exchanger:
IMPORTANT:
Before mounting the burner door, make sure that its gas-
kets and insulation are in excellent shape.
If any signs of damage or ageing are present, these parts
must be replaced.
The burner door unit must be reassembled to the heat
exchanger just in the reverse way of its disassembling, as
described earlier in this section, on page 100.
Carry out the final mounting of the burner door by follow-
ing the next steps:
- Place the burner door with its holes over the six threa-
ded studs.
Careful! When handling too rough or misplacing the
holes over the threaded studs, the burner door insula-
tion and/or gaskets can be damaged.
Assure yourself that the door is well positioned with res-
pect to the threaded studs, before pushing it onto the
exchanger.
- Now keep the burner door firmly in place by pushing the
gas/air nose with one hand at the middle at point A .
- Then turn-tighten the flange nuts with the other hand as
far as possible onto the threaded studs.
Now the burner door is in place and the nuts can be tigh-
tened with a torque key.
- Tighten the nuts in the order given in the picture
below
- The specified torque value for tightening the bur-
ner door flange nuts is
8 Nm
- tighten in given order
- torque value = 8 Nm
18.
USER INSTRUCTIONS
After installing and commissioning the boiler, demonstrate the operation of the entire central heating system to the
end-user. The user should be made familiar with all safety precautions of the boiler and the installation. The user
should be instructed that service and maintenance of the boiler is required every 12 months. Regular service and
maintenance is essential for a safe and proper operation of the boiler. Hand over the documents that are supplied
with the boiler.