Flowserve QLQ Vertical Worthington User Manual
Page 8
QLQ, QLQC USER INSTRUCTIONS ENGLISH 87900027 – 06/14
Page 8 of 61
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 shall 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 and correct alignment must be
maintained.
1.6.4.6 Preventing leakage
The pump shall 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 auxiliary systems.
Where there is the potential hazard of a loss of a seal
barrier fluid or external flush, the fluid shall be
monitored.
If leakage of liquid to atmosphere can result in a
hazard, users shall 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 6.
1.7 Nameplate and safety labels
1.7.1 Nameplate
For details of nameplate, see the Declaration of
Conformity.
1.7.2 Safety labels
1.8 Specific machine performance
For performance parameters see section 1.5, Duty
conditions. Pump performance data are summarized
on pump data sheet which is included in proper
section of “Job User’s Instruction”.