CIPRIANI BRAZED PLATE HEAT EXCHANGERS, Руководство по монтажу и эксплуатации

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ENGLISENGL
8
ENGLISH
If the BPHE is installed between the control valve and the differential pressure regulator
it must be verified, if there is not generated negative pressure while closing both
flow/pressure adjusting devices that can cause blockages in the system.
Regularly check the efficiency of the control device functionality and control the obtained
values. It would allow determining on time the interference in the operation of the BPHE (the
changes of the hydraulic parameters of the system, the necessity to perfoem washing-out).
Make sure to avoid any working conditions during operation which may exceed the
systems design limiting parameters and operation instructions.
Before switching off of the BPHE make sure that all the pumps are switched off. To stop
the operation of the BPHE slowly close the supply valves (first should be terminated the side
with the highest pressure). After long downtime of the object it is required to fully drain and
clean the BPHE. It is made due to the danger of freezing, as well as in the BPHE are used
dangerous and hazardous liquids, because the not completing of the actions might lead to
biological pollution.
While terminating the operation of the BPHE, it is required to stop the primary channel
first and only afterwards - the second. Restarting the operation, the secondary circuit is
launched first and only afterwards - the second, to reduce the possibility of heat exchanger
overheating.
Operating the BPHE by temperatures below 0°C (32°F) or above +40°C (104°F), is
required to use corresponding insulation.
In case of non-standard use not described in the manual, contact the manufacturer or
the representatives of the company for further information.
8. Protection against freezing
Freezing can lead to a severe damage of the BPHE due to formation of ice. If operating
conditions approach the freezing point, antifreeze agents, such as solutions of glycol, must
be applied.
The freezing might lead to damage of the BPHE.
Using the BPHE in refrigeration units as an evaporator, thoroughly check the parameters
of the BPHE with corresponding calculations. Use only corresponding regulation devices.
Avoid using of a vacuum pipe.
Use corresponding insulation for the BPHE.
9. Fouling, scaling, clogging
The reason of clogging of the BPHE and the emerging of scale can be reasoned with
several factors, for example, the velocity of flow, temperature, the quality of water.
To prevent the emerging and precipitation of small particles in the BPHE (> 1mm) install a
corresponding filters on the inputs to the heat exchanger (100

m). On the contrary, the
clogging of the plate channels becomes possible, which can also lead to the reduction of