Flowserve PLEUGER Bedienungsanleitung PDF herunterladen (Seite 6)

PLEUGER STANDARD USER INSTRUCTIONS ENGLISH 71569293 01-13

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Because of the risk of motor overload, S-series units

(pumps with axial impellers) must never be started

against a closed slider!

In order to avoid overheating the pump, a pump must

never be operated for more than 2 minutes against a

closed outlet valve.

In the time during which the empty riser is filled, the

ampere meter can display a higher current after

switch-on than specified in the data sheet, even after

the starting current has subsided.

Afterwards, the operating current must be lower than

the maximum permitted current as specified in the

data sheet.

SLOWLY open the outlet valve so as to not cause

overload to the well due to excessive delivery flow.

Open the slider slowly until the ampere meter displays

the operating current as specified in the data sheet.

After reaching the operating point for which the unit has

been designed, the current intake must approximately

match the one specified in the data sheet.

1.6.4 Products used in potentially explosive

atmospheres

Measures are required to:

 Avoid excess temperature

 Prevent build up of explosive mixtures

 Prevent the generation of sparks

 Prevent leakages

 Maintain the pump to avoid hazard

The following instructions for pumps and pump units

when installed in potentially explosive atmospheres

must be followed to help ensure explosion protection.

For ATEX, both electrical and non-electrical equipment

must meet the requirements of European Directive

94/9/EC. Always observe the regional legal Ex

requirements eg Ex electrical items outside the EU may

be required certified to other than ATEX eg IECEx, UL.

1.6.4.1 Scope of compliance

Use equipment only in the zone for which it is

appropriate. Always check that the motor and pump

equipment are suitably rated and/or certified for the

classification of the specific atmosphere in which they

are to be installed.

Where Flowserve has supplied only the bare shaft

pump or motor, the Ex rating applies only to that.

The party responsible for assembling the ATEX pump

set shall select any instruments or devices and the

motor cable and joint design and cable protection

suitable to the Ex environment according to ATEX

and IEC 60079-14. Fully submerged submersible

pump sets like electric cables are exempt from ATEX

Ex Marking. IEC 60079-14 requires that the cable

passing through an Ex Zone such as Zone 0, 1, 2, 20,

21 or 22 is correctly rated and protected by a suitable

Conduit or Armour design. Flowserve must be

advised the Ex Zone and area ATEX Classification in

any Caisson or atmosphere so that the appropriate

cable and pump set design is provided for the

application. If the Zone is Zone 0 or 20 a Flowserve

ATEX Category 2 or 3 Marked Pleuger CAVERN

design must not be used. All Pleuger CAVERN

designs use a liquid filled Conduit containing the

electric cable. Any additional applicable equipment

for ATEX must be provided with the necessary CE

Certificate/Declaration of Conformity establishing it is

suitable for the area in which it is to be installed.

The output from a variable frequency drive (VFD) can

cause additional heating effects in the motor and so, for

pump sets with a VFD, the ATEX Certification for the

motor must state that it is covers the situation where

electrical supply is from the VFD. This particular

requirement still applies even if the VFD is in a safe area.

1.6.4.2 Marking

An example of ATEX CAVERN equipment marking is

shown below. The actual classification of the pump

will be engraved on the nameplate.

II 2 GD k IIC T4 T135ºC IP68

Equipment Group

I = Mining

II = Non-mining

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