Flowserve WMV IDP - Manual (Page 8)

WMV, WMVS USER INSTRUCTIONS ENGLISH 26999970 10-12
Page 8 of 28
flowserve.com
1.6.4.5 Preventing sparks
To prevent a potential hazard from mechanical
contact, the coupling guard must be non-sparking
and anti-static for Category 2.
To avoid the potential hazard from random induced
current generating a spark, the baseplate must be
properly grounded.
Avoid electrostatic charge: do not rub non-metallic
surfaces with a dry cloth ; ensure cloth is damp.
For ATEX the coupling must be selected to comply
with 94/9/EC. Correct coupling alignment must be
maintained.
1.6.4.6 Additional requirement for metallic pumps
on non-metallic baseplates
When metallic components are fitted on a non-
metallic baseplate they must be individually earthed.
1.6.4.7 Preventing leakage
The pump must only be used to handle liquids
for which it has been approved to have the correct
corrosion resistance.
Avoid entrapment of liquid in the pump and associated
piping due to closing of suction and discharge valves,
which could cause dangerous excessive pressures to
occur if there is heat input to the liquid. This can occur if
the pump is stationary or running.
Bursting of liquid containing parts due to freezing
must be avoided by draining or protecting the pump
and ancillary systems.
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
1.6.4.8 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 6, 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.
EU regulation 547/2012 requires the statement on a
product nameplate: MEI
≥ 0.10 [--,-]. (See section
1.8.2, Ecodesign.)
1.7.2 Safety labels
1.8 Specific machine performance
1.8.1 General
For performance parameters see section 1.5, Duty
conditions. When the contract requirement specifies
these to be incorporated into User Instructions these
are included here. 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.