Atlantic Boilers RS TURBOFLOW DN 50 S070+ Panduan Pengoperasian & Pemeliharaan - Halaman 9
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Halaman Cetak4 - OPERATION
4.1 - Commissioning
• Make sure that the heat exchangers do not
operate under conditions that are severer than
the design conditions (pressure, temperature, flow
rate, fluid type).
• Make sure that the tightening dimension
matches that shown on the nameplate. Never
tighten beyond this dimension.
• Open the valves slowly to avoid water
hammering and thermal shock. Sudden changes
in temperature or pressure as well as sudden
inrushes of hot fluid in a cold unit (or vice versa)
may damage the gaskets and plates and cause
leaks.
• Make sure that the heat exchanger is not
subject to vibrations or frequent short cycles.
• Purge air from the two circuits completely after
circulating the fluids. Air left inside the circuits
may cause product overheating, reduce the
exchanger's efficiency and increase the risks of
corrosion.
4.2 - Post-commissioning tests
After running the system for one hour:
• Check for signs of leaks. Weak flow rates,
however, are normal during commissioning.
• Check the pressures and temperatures of all
the fluids being circulated.
5 - MAINTENANCE
• All maintenance operations must be carried out
by qualified, trained personnel.
• The heat exchanger may not be altered in any
way without Atlantic's consent.
• As the maintenance intervals depend on a
multitude of parameters (fluids, temperatures,
etc.), the frequency of preventive maintenance is
left to the operator's judgment. Nevertheless, a
maintenance inspection is recommended at least
once a year.
• Periodically check the condition of the corrosion
protection coatings and apply touch-ups as
needed.
5.1 - Preventive maintenance
• Our experience shows that, when used
under normal operating conditions, gasketed
heat exchangers have a service life of over 10
years. We advise against opening them too
often.
• Inquire about applicable environmental
standards and prevailing legislation,
particularly regarding the frequency of
checks and what to do in the event of a leak.
• Once a year, test the operation of all safety
devices, check the condition of the insulation,
look for signs of external corrosion and test
the pressure on the heat exchanger outlet.
• Record all periodic checks and problems in
the maintenance log.
Short-term storage (< 3 months)
1) Gradually lower the pressure in each circuit.
2) Turn off the pumps and close the shut-off
valves, starting with the hot circuit and then
the cold circuit.
3) Let the heat exchanger cool to room
temperature.
4) Completely drain the heat exchanger and
close the drain and vent valves.
Long-term storage (> 3 months)
Carry out the above steps as well as the
following:
1) Flush the heat exchanger circuits with water
to remove all residue.
2) Loosen the nuts on the tie bolts to reduce
the compression on the gaskets.
3) Apply a rust preventive on the tie bolts.
4) When recommissioning the heat exchanger,
lubricate the tie bolts and guide bars then go
to section 4.1.
5) Retighten the plates to the dimension
shown on the nameplate.