Flowserve MSP - Manual (Page 26)

MSP USER INSTRUCTIONS ENGLISH - 07/14
Page 26 of 35
up, which decreases with the time of operation and
should stop after the seal is run in. Check the
temperature of the seal gland. I slight increase of
temperature may be observed during the run in
period. Flushing of primary mechanical seal is
performed according to API 610 flushing plan 01.
Plan 01 is similar to a Plan 11 except that internal
porting is used to direct flow to the seal chamber from
an area behind the impeller near the discharge.
The product is led internally through a bore of a small
diameter (reduction of quantity) from the seal
chamber to flush the primary seal.
Disassembly of the seal cartridge
is only allowed by authorized personal. Contact
Flowserve for any service of the mechanical seal. We
recommend to have a spare cartridge seal on stock
for easy replacement.
7.1.2 Single Mechanical Seal with API – Plan 11
Refer to mechanical seal drawing and
auxiliary piping drawing.
The pump is equipped with a single mechanical seal.
The cartridge design allows to change the
mechanical seal without taking it apart.
Try to turn the rotor by hand.If the
rotor cannot be turned, the pump must be
disassembled, refer to section 6.7.1 Dismantling
MSP.
Actions after start up:
Check all connections to the seal gland and the
mechanical seal itself against leakage. It is usual that
at the seal faces a small leakage occurs after start
up, which decreases with the time of operation and
should stop after the seal is run in. Check the
temperature of the seal gland. I slight increase of
temperature may be observed during the run in
period. The mechanical seal is flushed by an API
Plan 11 and the temperature at the seal gland should
be max. 10 °C (18 °F) above the pumped liquid
temperature, unless otherwise specified by
mechanical seal supplier.
In Plan 11, product is routed from the pump
discharge via an orifice to the seal chamber to
provide cooling for the seal and to vent air or vapors
from the seal chamber. Fluid then flows from the seal
cavity back into the process stream.
Disassembly of the seal cartridge
is only allowed by authorized personal. Contact
Flowserve for any service of the mechanical seal. We
recommend to have a spare cartridge seal on stock
for easy replacement.
7.1.3 Single Mechanical Seal with API – Plan 23
Refer to mechanical seal drawing and
auxiliary piping drawing.
The pump is equipped with a single mechanical seal.
The cartridge design allows to change the
mechanical seal without taking it apart.
Try to turn the rotor by hand.If the
rotor cannot be turned, the pump must be
disassembled, refer to section 6.7.1 Dismantling
MSP.
Actions after start up:
Check all connections to the seal gland and the
mechanical seal itself against leakage. It is usual that
at the seal faces a small leakage occurs after start
up, which decreases with the time of operation and
should stop after the seal is run in. Check the
temperature of the seal gland. I slight increase of
temperature may be observed during the run in
period. The mechanical seal is flushed by an API
Plan 23 and the temperature at the seal gland should
be below the pumped liquid temperature (refer to
mechanical seal drawing for temperature limit).
Plan 23 is the plan of choice for all hot water
services, and it is also desirable in many hydrocarbon
and chemical services where it is necessary to cool
the fluid establish the required margin between fluid
vapour pressure (at the seal chamber temperature)
and seal chamber pressure. In a Plan 23, the cooler
only removes seal face-generated heat plus heat
soak from the process.
For cooling flow and pressure
refer to GA-drawing.
Disassembly of the seal cartridge
is only allowed by authorized personal. Contact
Flowserve for any service of the mechanical seal. We
recommend to have a spare cartridge seal on stock
for easy replacement.
7.1.4 Dual Mechanical Seal unpressurized with
API–Plan 01+52
Refer to mechanical seal drawing and
auxiliary piping drawing.
The pump is equipped with a dual mechanical seal.
The cartridge design allows to change the
mechanical seal without taking it apart.
Try to turn the rotor by hand.If the
rotor cannot be turned, the pump must be