Flowserve ESP2 Instrukcja Użytkownika Pobierz pdf (Strona 28)

ESP2 USER INSTRUCTIONS ENGLISH PCN-(71569292) 4-12

Page 28 of 64

A variety of seal piping plans designed to suit certain

pumping conditions and liquids are available.

FIGURE 5-1

FIGURE 5-2

SEAL

SEALS

REQUIRING

In.

NO SETTING

Durametallic:

John Crane:

Group 1 RAC

52.3

Group 1 PSS

0.0

T-1 double

2.06

Group 2 PSS

0.0

1100

Group 2 RAC

52.3

Group 3 PSS

0.0

Cartridge T-1B

2.06

Chesterton:

Group 3 RAC

71.4

Group 1 221

1.6

88S

2.81

0.0625

28LD

Group 1 VO

73.2

Group 2 221

1.6

1215

2.88

0.0625

2215

Group 2 VO

76.2

Group 3 221

1.6

Flexibox:

3.00

0.0625

FFET

Group 3 VO

John Crane:

Sealol:

John Crane:

Group 1 8B2

44.5

611

Group 2 37FS

1.750

623

1.968

Group 2 8B2

44.5

Borg-Warner:

Group 3 37FS

1.750

Uniseal I

1.968

Group 3 8B2

44.5

Uniseal II

1.750

Durametallic:

X-100

X-200

P-50

CRO double

Chesterton:

123

155

241

255

5.1.2.2 Packing the stuffing box

Inspect the stuffing box to see if it contains packing.

The pump normally leaves the factory with the

stuffing box unpacked, and it must be packed before

the pump is put into service. A complete set of

packing cut to proper lengths is included with other

loose parts in a box attached to the pump skid. The

stuffing box should be packed in the following

manner:

a) Remove (or raise out of the way) the stuffing box

gland.

b) Carefully clean the stuffing box (with a lint free

doth) clear of any scale build up and foreign

matter which may have entered during shipment

or storage.

c) In packing the stuffing box put in one ring at a

time, pushing it well into place. Two rings of

packing must be installed, and then the seal

cage, then succeeding rings of packing until the

box is filled. THE JOINTS OF SUCCEEDING

RINGS MUST BE STAGGERED. See Figure 5.3

for additional packing information.

d) After the last ring of packing is in place, draw up

the nuts on the gland (4120.1) evenly finger

tight, then tighten nuts an extra 1/4 turn to initially

set the packing. A slight amount of leakage

through the gland is necessary for proper

lubrication. Packing glands must never be

tightened to the point where leakage from the

packing is stopped.

e) Preserve any left over packing for future use.

After the packing has been compressed under

operating conditions, there may be enough room

to allow another ring to be inserted.

There is a tapped hole leading into

the stuffing box for the purpose of sealing the

packing with liquid or grease. When the packing is

compressed, the seal cage must be in line with this

passage.

Shutting off leakage flow from the

packing will result in burned packing and scored

shafts.

FIGURE 5-3

Packing Information

Group 1

Group 2

Group 3

Packing size, square (inches)

0.31

0.38

Packing arrangement

2-C-3

Seal Cage width

0.50

0.75

0.50

Shaft Diameter

1.125

1.500

1375

1.123

1498

1873

Shaft

1 2 ... 23 24 25 26 27 28 29 30 31 32 33 ... 61 62

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