Vetter Flexible packers - Manual (Page 7)

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4. Operation of the Flexible packer
In this chapter you will find 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 floor 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 Inflate the Flexible packer only after the pipe has been cle-
aned.
4.2 Never exceed the pre-specified operating
pressure
9 Inflate the packer to the pre-specified 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 inflating the
packer
9 During repair work no persons are to remain in the area of
danger.
9 The area of danger is defined 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.