Flowserve MP1 Sier-Bath - Manual (Page 5)

MP1 USER INSTRUCTIONS ENGLISH 26999958 – 10-12
Page 5 of 48 flowserve.com
The product must not be operated beyond
the parameters specified for the application. If
there is any doubt as to the suitability of the
product for the application intended, contact
Flowserve for advice, quoting the serial number.
If the conditions of service on your purchase order
are going to be changed (for example pumping,
temperature or duty) it is requested that you/the user
seek our written agreement 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 would affect
personal safety.
This symbol indicates safety instructions where
non-compliance would affect personal safety.
This symbol indicates safety instructions where
non-compliance would affect protection of a safe life
environment.
This symbol indicates safety
instructions where non-compliance would affect the
safe operation or protection of the pump or pump unit.
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 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.)
RELIEF VALVE PIPED BACK TO THE
SUCTION PIPE REQUIRED
The Twin Screw Pumps are positive displacement
pumps and will build up considerable pressure if
discharge line is blocked.
Customer shall include a properly sized safety relief
valve for the maximum expected flow at the
maximum expected operating pressure + 10% or the
maximum allowed working pressure (MAWP),
whichever is the lowest. Safety relief valve shall be
connected close to the discharge of the pump. The
pipeline discharging from the safety relief valve
should go back to the suction tank, if at all possible;
if not, it could be connected to the suction line of the
pump but only if well upstream so as to not create
excessive combined pressure. This discharge line
shall not be blocked at all. Customer shall also
include additional provisions to stop the process if
the discharge pressure is above the maximum
allowable pressure criteria; the pump shall not be
recirculating the flow for other than a very short time
due to the safety risk of the temperature exceeding
the allowable limit.
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
START THE PUMP WITH OUTLET
VALVE FULLY OPENED
(Unless otherwise instructed at a specific point in the
user instructions.) This is recommended to minimize
the risk of overloading and damaging the pump
motor at zero flow. The pump outlet control valve