Vetter Flexible packers User Manual download pdf (Page 7)

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4. Operation of the Flexible packer

In this chapter you will nd out about which sources of com-

pressed air that can be used for Vetter pipe and test sealing bags.

With operation of the packer, the corresponding

pressure stages are to be observed.

4.1 Checking the correct position of the

packer

9 The maximum permitted pressure of the packer in the open

is 0.5 bar.

9 It is to be observed that when positioning the packer, the pa-

cker cladding does not touch the oor of the shaft. Any sharp

objects can cause damage to the cladding.

9 The packer is either pushed or pulled to the damaged positi-

on.

9 Inate the Flexible packer only after the pipe has been cle-

aned.

4.2 Never exceed the pre-specied operating

pressure

9 Inate the packer to the pre-specied operating pressure (re-

fer to the label on each packer). Due to expansion of the rub-

ber cladding it is recommended that the operating pressure

be checked.

9 Check the controller regularly before each functional opera-

tion.

9 If the maximum permissible operating pressure is exceeded,

the packer can be destroyed.

4.3 Things to be observed when inating the

packer

9 During repair work no persons are to remain in the area of

danger.

9 The area of danger is dened as being the area of the pipe as

well as channel and shaft areas in which the packer is situa-

ted.

WARNING: It is not permitted to remain in the

danger area. An accident can cause serious

injuries and even fatalities.

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Vetter Flexible packers User Manual Page 7