Flowserve PLEUGER Bedienungsanleitung PDF herunterladen (Seite 8)

PLEUGER STANDARD USER INSTRUCTIONS ENGLISH 71569293 01-13

Page 8 of 40 flowserve.com

Bursting of liquid containing parts due to freezing

must be avoided by draining or protecting the pump

and ancillary systems.

Locking system for mechanical seals must be

monitored for leaks of the delivery medium and the

locking medium.

Where there is the potential hazard of a loss of a seal

barrier fluid or external flush, the fluid must be monitored.

If leakage of liquid to atmosphere can result in a

hazard, install a liquid detection device.

1.6.4.7 Maintenance to avoid the hazard

CORRECT MAINTENANCE IS REQUIRED TO

AVOID POTENTIAL HAZARDS WHICH GIVE A

RISK OF EXPLOSION

The responsibility for compliance with maintenance

instructions is with the plant operator.

To avoid potential explosion hazards during

maintenance, the tools, cleaning and painting

materials used must not give rise to sparking or

adversely affect the ambient conditions. Where there

is a risk from such tools or materials, maintenance

must be conducted in a safe area.

It is recommended that a maintenance plan and

schedule is adopted. (See section 8, Maintenance.)

1.7 Nameplate and safety labels

1.7.1 Nameplate

For details of nameplate, see the Declaration of

Conformity, or separate documentation included with

these User Instructions.

1.7.2 Safety labels

Oil lubricated units only:

1.8 Specific machine performance

1.8.1 General

For performance parameters see section 1.5, Duty

conditions. Where performance data has been supplied

separately to the purchaser these should be obtained

and retained with these User Instructions if required.

1.8.2 Ecodesign

EU regulation 547/2012 of the Directive

2009/125/EC, for the minimum efficiency of defined

classes of water pumps requires that products must

show their Minimum Efficiency Index (MEI) value.

The EU benchmark MEI ≥ 0.70. Also product

information must be available to users.

Performance curves will have been provided with the

quotation or order or are available at flowserve.com.

The efficiency of a pump with trimmed impeller is

usually lower than that of a pump with the full impeller

diameter. Trimming of the impeller will adapt the

pump to a fixed duty point, leading to reduced energy

consumption. The minimum efficiency index (MEI) is

based on the full impeller diameter.

The operation of this water pump with variable duty

points may be more efficient and economic when

controlled by, for example, by the use of a variable

speed drive that matches the pump duty to the system.

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