Flowserve M-series PolyChem - Manual (Page 8)

USER INSTRUCTIONS PolyChem M-SERIES ENGLISH 71569218 07-11
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Page 8 of 60
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If the operation of the system cannot avoid this
condition, fit an appropriate dry run protection device
(for example liquid detection or a power monitor).
To avoid potential hazards from fugitive emissions of
vapour or gas to atmosphere the surrounding area
must be well ventilated.
1.6.4.5
Preventing sparks
To prevent a potential hazard from mechanical
contact, the coupling guard must be non-sparking.
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.
Additional requirement for metallic pumps on
non-metallic baseplates
When metallic components are fitted on a non-
metallic baseplate they must be individually earthed.
1.6.4.6
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.
If leakage of liquid to atmosphere can result in a
hazard, install a liquid detection .
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 6, Maintenance.)
1.7 Nameplate and safety labels
1.7.1
Nameplate
For details of nameplate, see the Declaration of
Conformity and section 3.
1.7.2
Safety labels
Oil lubricated units only:
1.8 Specific machine performance
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.