Unical BAHR'UNO, Instructions On Installation, Use And Maintenance

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Instructions for routine maintenance
Carry out the following checks:
- check the mechanical and electrical efficiency of the adjust -
ment and safety devices;
- adjust the sealing of all gaskets both on the fumes and the
water sides;
- readily replace defective gaskets steam side to prevent the
continuing loss of leaks damages the sealing surface of the
flanges of the manhole ring;
- promptly replace defective gaskets smoke side if affecting the
front door to prevent the high temperature gas leaks from
causing local overheating with possible deformation of the
structure;
- check the status of the feed pump;
- check the combustion parameters;
- check the efficiency of the water treatment system;
- analyse the feed and operating water to check that the values
are within the prescribed range of values; in case of high al-
kalinity, increase boiler water drains.
Instructions for extraordinary maintenance
Soot deposits on the heat exchange walls impede the transmis-
sion of heat with decay of the yield and consequent waste of
fuel.
Scale deposits on the water side of the same walls as well as
produce effects similar to those described above, are the cause
of breaks (cracks on the tube plates, cracks on the pipes etc.) or
dangerous overheating.
Interventions to prevent the above phenomena consist in:
SMOKE SIDE:
- brushing the furnace;
- extraction of turbulators from the tube bundle;
- disassembly and cleaning of rear smoke chamber;
- cleaning of tubes by brush;
- removal of all deposits
In the meantime, check the door gaskets and thoroughly
clean the rear smoke chamber and the smoke fitting;
The frequency of these extraordinary main-
tenance depends on the type of fuel and the
combustion quality: on average every 3-4
months for combustion with dense naphtha
and at least once a year with use of diesel and
gas.
WATER SIDE:
- disassembly of level probes;
- opening of manhole;
- internal inspection to ascertain the presence of deposits or
signs of corrosion;
- complete analysis of the feed and operating water as pre-
scribed by the supplier of the water treatment system.
WARNINGS
The significant presence of deposits must
be removed by chemical wash of the gener-
ator carried out by specialised companies;
In the presence of deposits or the begin-
ning of corrosion (confirmed by the chem -
ical analysis), it is necessary to service the
water treatment system;
Deposits on the rods of the level control
unit probes are removed by simply sand-
ing with abrasive cloth: for the safety level
switch unit probe follow the instructions of
the Manufacturer of the same, attached to
the document envelope with the generator;
Carefully reassemble all the components
paying attention to the connections that
should not be reversed.
Should it be necessary due to leaks or seep-
ing of the safety valve, care must be taken in
the possible shutter and housing grinding,
operations to be requested directly from the
Manufacturer of the valve.
Please note that the opening of the manhole
mandatorily requires the replacement the
relative gasket.
4.2 - GENERAL RULES FOR THE DISPOSAL
ATTENTION!
DISPOSAL OF THE EQUIPMENT MUST BE
NOTIFIED TO THE NATIONAL AUTHORITIES
(INAIL, ARPA, ASL) AND MUST BE CARRIED
OUT IN COMPLIANCE WITH THE COMPUL-
SORY LEGISLATION ON INDUSTRIAL WASTE
DISPOSAL.