Flowserve Mark 3 Sealed Metallic Durco - Manual (Page 5)

MARK 3 USER INSTRUCTIONS ENGLISH 71569102 01-13
Page 5 of 72 flowserve.com
HOT (and cold) PARTS
If hot or freezing components or auxiliary heating
equipment can present a danger to operators and
persons entering the immediate area, action must be
taken to avoid accidental contact (such as shielding). If
complete protection is not possible, the machine access
must be limited to maintenance staff only with clear
visual warnings and indicators to those entering the
immediate area. Note: bearing housings must not be
insulated and drive motors and bearings may be hot.
If the temperature is greater than 80 °C (175°F) or
below -5 °C (23 °F) in a restricted zone, or
exceeds local regulations, action as above shall
be taken.
HAZARDOUS LIQUIDS
When the pump is handling hazardous liquids care
must be taken to avoid exposure to the liquid by
appropriate siting of the pump, limiting personnel
access and by operator training. If the liquid is
flammable and/or explosive, strict safety procedures
must be applied.
Gland packing must not be used when pumping
hazardous liquids.
PREVENT EXCESSIVE EXTERNAL
PIPE LOAD
Do not use pump as a support for piping. Do not
mount expansion joints, unless allowed by Flowserve
in writing, so that their force, due to internal pressure,
acts on the pump flange.
NEVER RUN THE PUMP DRY
OR WITHOUT PROPER PRIME (Casing flooded)
NEVER OPERATE THE PUMP
WITH THE DISCHARGE VALVE CLOSED
(Unless otherwise instructed at a specific point in the
User Instructions.)
(See section 5, Commissioning start-up, operation
and shutdown.)
NEVER OPERATE THE PUMP
WITH THE SUCTION VALVE CLOSED
It should be fully opened when the pump is running.
NEVER OPERATE THE PUMP
AT ZERO FLOW OR FOR EXTENDED PERIODS
BELOW THE MINIMUM CONTINUOUS FLOW
DO NOT RUN THE PUMP AT
ABNORMALLY HIGH OR LOW FLOW RATES
Operating at a flow rate higher than normal or at a flow
rate with no back pressure on the pump may overload
the motor and cause cavitation. Low flow rates may
cause a reduction in pump/bearing life, overheating of
the pump, instability and cavitation/vibration.
NEVER EXCEED THE MAXIMUM
DESIGN PRESSURE (MDP) AT THE
TEMPERATURE SHOWN ON THE PUMP
NAMEPLATE
ENSURE CORRECT
LUBRICATION
(See section 5, Commissioning, startup, operation
and shutdown.)
See section 3 for pressure versus temperature ratings
based on the material of construction.
THE PUMP SHAFT MUST TURN
CLOCKWISE WHEN VIEWED FROM THE MOTOR
END
It is absolutely essential that the rotation of the motor
be checked before installation of the coupling spacer
and starting the pump. Incorrect rotation of the pump
for even a short period can unscrew the impeller,
which can cause significant damage.
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.
Scope of compliance 1.6.4.1
Use equipment only in the zone for which it is
appropriate. Always check that the driver, drive
coupling assembly, seal 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, the Ex rating applies only to the pump. The
party responsible for assembling the ATEX pump set