Flowserve Type R - Manual (Page 5)

R and RX SLURRY Pump USER INSTRUCTIONS ENGLISH 71569242 03-11 (E)
Page 5 of 54
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temperature or duty) it is requested that the user seeks
the written agreement of Flowserve before start up.
1.6 Safety
1.6.1 Summary of safety markings
These User Instructions contain specific safety markings
where non-observance of an instruction would cause
hazards. The specific safety markings are:
This symbol indicates electrical safety
instructions where non-compliance will involve a high
risk to personal safety or the loss of life.
This symbol indicates safety instructions where
non-compliance would affect personal safety and could
result in loss of life.
This symbol indicates “hazardous and toxic fluid”
safety instructions where non-compliance would affect
personal safety and could result in loss of life.
This symbol indicates safety instructions
where non-compliance will involve some risk to safe
operation and personal safety and would damage the
equipment or property.
This symbol indicates explosive atmosphere
zone marking according to ATEX. It is used in safety
instructions where non-compliance in the hazardous
area would cause the risk of an explosion.
This symbol is used in safety instructions to
remind not to rub non-metallic surfaces with a dry cloth;
ensure the cloth is damp. It is used in safety
instructions where non-compliance in the hazardous
area would cause the risk of an explosion.
This sign is not a safety symbol but indicates an
important instruction in the assembly process.
1.6.2 Personnel qualification and training
All personnel involved in the operation, installation,
inspection and maintenance of the unit must be
qualified to carry out the work involved. If the
personnel in question do not already possess the
necessary knowledge and skill, appropriate training and
instruction must be provided. If required the operator
may commission the manufacturer/supplier to provide
applicable training.
Always coordinate repair activity with operations and
health and safety personnel, and follow all plant safety
requirements and applicable safety and health laws
and regulations.
1.6.3 Safety action
This is a summary of conditions and actions to
prevent injury to personnel and damage to the
environment and to equipment. For products used
in potentially explosive atmospheres section 1.6.4
also applies.
NEVER DO MAINTENANCE WORK
WHEN THE UNIT IS CONNECTED TO POWER
GUARDS MUST NOT BE REMOVED WHILE
THE PUMP IS OPERATIONAL
DRAIN THE PUMP AND ISOLATE PIPEWORK
BEFORE DISMANTLING THE PUMP
The appropriate safety precautions should be taken
where the pumped liquids are hazardous.
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.
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.
APPLYING HEAT TO REMOVE IMPELLER
There may be occasions when the impeller has either
been shrunk fit on to the pump shaft or has become
difficult to remove due to products of corrosion.
If you elect to use heat to remove the impeller, it must
be applied quickly to the impeller boss. TAKE GREAT
CARE!
Before applying heat ensure any residual hazardous
liquid trapped between the impeller and pump shaft is
thoroughly drained out through the impeller keyway to
prevent an explosion or emission of toxic vapour. This
must be carried out with the shaft in the vertical
position. On some pump sizes a cavity exists in the
impeller bore so on occasions a significant volume of
liquid may drain out.
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.