Flowserve MSP - Manual (Page 24)

MSP USER INSTRUCTIONS ENGLISH - 07/14
Page 24 of 35
6.6 Setting impeller clearance
No axial adjustment of the rotor is necessary.
6.7 Disassembly
Refer to section 1.6, Safety, before
dismantling the pump.
Before dismantling the pump for
overhaul, ensure genuine Flowserve replacement
parts are available.
Refer to sectional drawings for part numbers and
identification.
6.7.1 Dismantling of pump – 1 stage
1) Completely drain the pump by using the drain
connection. By pumping explosive or toxic media,
flush your system with Nitrogen.
2) Disconnect the motor from the main electricity
supply.
3) Secure the mechanical seal by putting the
mounting plates into the groove of the shaft
sleeve. Loose the clamping device, and
disconnect the seal piping.
Refer to mechanical seal drawing for
details.
Drain the seal system, if
applicable.
4) Loose the hex nuts [6581.2] to disconnect the
pump casing [1110] from the motor hydraulic
assembly. Use hexagon head bolt [6577] to
support this.
5) Pull out the motor hydraulic assembly and bring it
to a workshop.
6) Unsecure lockwasher [6541] and loose impeller
nut [2912] (right hand thread)
If the pump is equipped with an
inducer [2215] loose inducer.
7) Pull off the impeller [2200] by using two studs
screwed into the threads at the impeller shroud.
Remove also key [6700].
8) Loose socket head cap screws [6579.2] and pull
off the diffuser insert [1649].
Replace O-rings [4610.2],
[4610.1] after each disassembly.
9) Loose socket head cap screws [6579.3] and pull
off the casing cover [1221] together with the
mechanical seal.
10) Loose hex nuts [6581.3] and pull out the
mechanical seal.
11) Open the clamping ring [2542] and pull off the
pump shaft [2100] with help of the jack screws.
Pump shaft [2100] shall be pulled off
only if required (see chapter 6.8) to keep axial
clearance of impeller.
6.7.2 Dismantling of pump – 2 stage
10) Completely drain the pump by using the drain
connection. By pumping explosive or toxic media,
flush your system with Nitrogen.
11) Disconnect the motor from the main electricity
supply.
12) Secure the mechanical seal by putting the
mounting plates into the groove of the shaft
sleeve. Loose the clamping device, and
disconnect the seal piping.
Refer to mechanical seal drawing for
details.
Drain the seal system, if
applicable.
13) Loose the hex nuts [6581.2] to disconnect the
pump casing [1110] from the motor hydraulic
assembly. Use hexagon head bolt [6577] to
support this.
14) Pull out the motor hydraulic assembly and bring it
to a workshop.
15) Unsecure lockwasher [6541] and loose impeller
nut [2912] (right hand thread)
If the pump is equipped with an
inducer [2215] loose inducer.
7) Pull off impeller [2200] by using two studs
screwed into the threads at the impeller shroud.
8) Loose socket head cap screws [6579.1] pull out
the interstage plate [1471]
The interstage plate [1471] consist
of two parts which are pressed together and
cannot be disassembled.
Take care of the O-rings
[4610.1].
9) Pull off the bearing sleeve [3400] and the
second stage impeller [2200] from the shaft
[2100]. Use two studs screwed into the threads
at the impeller shroud. Remove also key [6700].
10) Now you can pull off the liner [1649]. Use
hexagon head bolt [6577] to support this. Loose
the socket head cap screws [6579.2] and pull off
the liner [1649]
11) Loose socket head cap screws [6579.3] and pull
off the casing cover [1221] together with the
mechanical seal.
Loose hex nuts [6581.3] and pull out the
mechanical seal.
12) Open the clamping ring [2542] and pull off the
pump shaft [2100] with help of the jack screws.