Atlantic Boilers RS TURBOFLOW DN 65 S180+ Manual de operação e manutenção - Página 14

Procurar online ou descarregar pdf Manual de operação e manutenção para Equipamento industrial Atlantic Boilers RS TURBOFLOW DN 65 S180+. Atlantic Boilers RS TURBOFLOW DN 65 S180+ 18 páginas. Plate heat exchangers

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If you feel it is necessary to tighten beyond the recommen-

ded dimension,contact CIPRIANI's After-Sales Department

fluid

to obtain advice.

dards

h the

gainst

hat all

Fig.10

a ho-

• It is recommended to perform a pressure test after all main-

5.8 - Reassembly

cified

tenance on the plates and gaskets in order to check the

heat exchanger's internal and external tightness. The maxi-

• Before reassembling the heat exchanger,

mum pressure for each circuit should be equal to the ope-

make sure that all the plates and gaskets are

rating pressure and should never exceed the rated pressure

n the

(PS) specified on the nameplate. The recommended testing

clean and free of grease.

time is at least 10 minutes. Nevertheless, it remains the

e fra-

user's responsibility to check national standards and local

• When arranged correctly, the stacked plates

order

codes affecting such a test. If different test conditions are

ained

required, please note that the heat exchangers should ne-

form a honeycomb pattern (Fig.10).

ed on

ver be tested at pressures greater than the test pressure

(PT) specified on the nameplate and that the pressure diffe-

• The order of assembly and the plate

direction are specified on the plate

arrangement drawing

Procedure

• Starting from the frame plate, assemble the

plates on the bar one by one with the gaskets

facing the frame plate.

• Clean and lubricate the tie-rods, position

them on the frame, then tighten the nuts

gradually and evenly in the order indicated in

Fig. 11 until the correct dimension is obtained

between the plates (tightening dimension),

as specified on the nameplate. Check that

rences between the two circuits during testing should never

this dimension is the same on each side.

be higher than the maximum allowable differential pressure.

Overtightening may irreversibly distort the

• If a leak occurs, lower the pressure then retighten the nuts

and repeat the test. If the leak persists, check the gaskets

plates. If you feel it is necessary to tighten

and plates for signs of wear, damage or dirt. If necessary,

beyond the recommended dimension,contact

replace the gaskets.

Atlantic to obtain advice.

• It is recommended to perform a pressure

5.9 - Plate types

test after all maintenance on the plates and

gaskets in order to check the heat exchanger's

internal and external tightness. The maximum

pressure for each circuit should be equal to the

operating pressure and should never exceed

the rated pressure

(PS) specified on the nameplate. The

recommended testing time is at least 10

minutes. Nevertheless, it remains the user's

responsibility to check national standards and

local codes affecting such a test. If different test

conditions are

required, please note that the heat exchangers

ATLANTIC BOILERS, PO BOX 11, ASHTON UNDER LYNE, OL6 7TR T: 0161 621 5960 E: [email protected] www.atlanticboilers.com

The letter indicates the plate type:

Fig.11

should never be tested at pressures greater than

the test pressure (PT) specified on the nameplate

and that the pressure diffeences between the two

circuits during testing should never

be higher than the maximum allowable

differential pressure.

rences between the two circuits during testing should never

• If a leak occurs, lower the pressure then

be higher than the maximum allowable differential pressure.

retighten the nuts and repeat the test. If the leak

• If a leak occurs, lower the pressure then retighten the nuts

persists, check the gaskets and plates for signs of

and repeat the test. If the leak persists, check the gaskets

wear, damage or dirt. If necessary, replace the

and plates for signs of wear, damage or dirt. If necessary,

gaskets.

replace the gaskets.

5.9 - Plate types

The letter indicates the plate type:

A = HIGH EFFICIENCY plate with wide chevron pattern

B = LOW DELTA P plate with narrow chevron pattern

PORT HOLES FOR PLATES ON SINGLE-PASS UNITS

ODD

EVEN

DESCRIPTION

INITIAL

INTERMEDIATE

PARALLEL

FLOW

CODE

1 2 3 4

PORT HOLES POSITION FOR DEVIATION PLATE

1,2,4

1,3,4

1,2,3

2,3,4

Drilling the collectors. Code which indicates the position and the open or

closed status of the collectors.

1234 = Open 0 = Closed

e.g.: 1204: indicates that porthole No. 3 is closed.

ODD

INTERMEDIATE

FINAL

1 2 3 4

1,4

2,3

PORT HOLES

POSITION

PASSING

HOLES

BLIND

HOLES