Velocity Edge GX325 Manual de usuario descargar pdf (Pagina 37)

Steps for Manual Cleaning of Plates

1. Open the unit in accordance with disassembly procedures

on page 31.

2. Clean each plate separately. Depending upon the amount

of cleaning to be performed, the plate can be cleaned while

still hanging in the unit or removed, placed on a ﬂat surface

and cleaned.

3. Never use a steel brush or steel wool on the plates. If a

brush is required, use one with bristles that are softer than

the plate material. If iron is forcibly rubbed on a stainless

steel surface, it is impossible to remove all imbedded particles

and will result in accelerated rusting and/or corrosion. If it

is absolutely necessary that a metal brush be used, the brush

material must be compatible with the plate material.

4. Be careful not to scratch the gasket surfaces.

5. After brushing, each plate should be rinsed with clean water.

6. Use high pressure rinse when cleaning continuously glued

plate assemblies.

7. See “Plate Cleaning Tips” on page 38 for specific types

of deposits.

8. The gaskets must be wiped dry with a cloth. Solid particles

adhering to the gaskets cause damage and result in leakage

when the unit is put back in operation.

9. The lower portion of each plate as hung in the unit should

be inspected carefully and cleaned appropriately as this

is the primary area where residual solid material tends to

accumulate.

10. Wipe off the mating surface, i.e., the rear of the plate where

the gasket seats.

11. Upon completing the cleaning, inspection and installation of

each plate, the unit may be closed, tightened per the assembly

drawing and the tightening instructions (page 30), and placed

into operation.

CLEANING

SUPERCHANGER plate and frame type heat exchangers

are designed for both manual cleaning and cleaning-in-place

operations. Where possible, utilize a cleaning-in-place system

that will allow pumping water or cleaning solutions into the

unit without disassembling. A CIP system may be purchased

through Tranter. If this is not feasible, use the manual method.

Descriptions of the two cleaning procedures follow.

CAUTION

: Do not use chlorine or chlorinated water

to clean stainless steel, Hastelloy, Incolloy, Inconel

and 254SMO. Chlorine is commonly used to inhibit

bacteria growth in cooling water systems. It reduces

the corrosion resistance of stainless steel, Hastelloy,

Incolloy, Inconel and 254SMO. The “protection layer”

of these steels is weakened by chlorine and makes

them more susceptible to corrosion. This increase

in susceptibility to corrosion is a function of time

and the chlorine concentration. For any applications

where chlorination must be used with non-titanium

equipment, please contact the factory.

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Velocity Edge GX325 Manual de usuario Pagina 37

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