Flowserve CESM-1 - Manual (Page 5)

CESM 1 MULTI-LINGUAL 11-09
Page 5 of 32 flowserve.com
Guarding is supplied fitted to the pump set. In
member countries of the EU and EFTA, it is a legal
requirement that fasteners for guards must remain
captive in the guard to comply with the Machinery
Directive 2006/42/EC. When releasing such guards, the
fasteners must be unscrewed in an appropriate way to
ensure that the fasteners remain captive. Whenever
guarding is removed or disturbed ensure that all the
protective guards are securely refitted prior to start-up.
FLUORO-ELASTOMERS (When fitted.)
When a pump has experienced temperatures over
250 ºC (482 ºF), partial decomposition of fluoro-
elastomers (example: Viton) will occur. In this
condition these are extremely dangerous and skin
contact must be avoided.
THERMAL SHOCK
Rapid changes in the temperature of the liquid within
the pump can cause thermal shock, which can result
in damage or breakage of components and should be
avoided.
HANDLING COMPONENTS
Many precision parts have sharp corners and the wearing
of appropriate safety gloves and equipment is required
when handling these components. To lift heavy pieces
above 25 kg (55 lb) use a crane appropriate for the mass
and in accordance with current local regulations.
HOT (and cold) PARTS
If hot or freezing components or auxiliary heating
supplies can present a danger to operators and
persons entering the immediate area action must be
taken to avoid accidental contact. 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) o r
below -5 °C (23 °F) in a restricted zone, or exceed s
local regulations, action as above shall be taken.
A RELIEF VALVE PIPED BACK TO THE
SUCTION LINE IS REQUIRED (NOT APPLICABLE
TO CENTRIFUGAL PUMPS)
Positive displacement pumps will build up
considerable pressure if the discharge line is blocked.
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.
ENSURE CORRECT LUBRICATION
(See pump User Instructions, Commissioning,
startup, operation and shutdown.)
START THE PUMP WITH OUTLET
VALVE PARTLY OPENED (unless otherwise instructed
at a specific point in the pump User Instructions)
This is recommended to minimize the risk of
overloading and damaging the pump motor at full or
zero flow. Pumps may be started with the valve
further open only on installations where this situation
cannot occur. The pump outlet control valve may
need to be adjusted to comply with the duty following
the run-up process. (See pump User Instructions,
Commissioning start-up, operation and shutdown.)
NEVER RUN THE PUMP DRY
ONLY CHECK DIRECTION OF
MOTOR ROTATION WITH COUPLING ELEMENT/
PINS REMOVED
Starting in reverse direction of rotation will damage the
pump.
INLET VALVES TO BE FULLY OPEN
WHEN PUMP IS RUNNING
Running the pump at zero flow or below the
recommended minimum flow continuously will cause
damage to the seal.
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.
HIGH MAGNETIC FIELDS
Persons working with permanent magnet parts
must be made aware that there is a potential
danger from magnetic fields eg influence on heart
pacemakers, credit cards, computers, computer
tapes/discs and watches.
Great care must be taken when working with or
assembling/dismantling magnetic rotors because
of the very high forces which can be created by
the magnets.
When shipping raw or bare magnet assemblies,
especially by air, special precautions may be
necessary.