Velocity Edge GX325 Manual de usuario descargar pdf (Pagina 29)

Tightening the Plate Pack

The plate pack tightening length (distance between the facing

surfaces of the “S” and “E” frames) is given on the assembly

drawing and on the unit data plate. The tightening dimension

is identiﬁ ed as “A Max.” and “A Min.” The unit is normally

tightened at the factory to the average dimension between “A

Max.” and “A Min.” “A Min.” is a minimum length. Consult the

SUPERCHANGER Engineering Department before tightening

the unit to a smaller dimension. CAUTION: On units

operating in excess of 200 psig, the tightening dimension is

to equal or approach the minimum dimension. The wrench

size required for the various SUPERCHANGER tightening bolt

diameters is shown below. Refer to the SUPERCHANGER

drawing for the actual bolt diameter.

Due to manufacturing tolerances, a unit is sometimes shipped

with a plate pack dimension greater than the minimum

dimension stated on the drawing. If leakage occurs, after a

period of time, tighten the unit to the minimum length. If the

plate pack length is shorter than the minimum length, damage

to the plates at contact points may result. If leakage occurs at the

minimum length, contact the SUPERCHANGER Engineering

Department for recommendations regarding gasket replacement

or additional tightening.

The end frame is

immovable with this

piping arrangement

Figure 39

Correct piping installation—disconnecting A and B connections will permit

movement of the end frame (top view).

Figure 40

Incorrect piping installation—the end frame is immovable (side view).

BOLT DIAMETER (in.) WRENCH SIZE (Across Flats) (in.)

3/4 1 1/4

1 1 5/8

1 1/4 2

1 1/2 2 3/8

1 3/4 2 3/4

2 3 1/8

2 1/4 3 1/2

2 1/2 3 7/8

An EZCHANGER Hydraulic Closing Device is available for assembly/disassembly of larger units. See page 45 for details.

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Velocity Edge GX325 Manual de usuario Pagina 29