Flowserve SIHI dry Standard H Series, Instruction & Operation Manual

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67
Flowserve US Inc.
SIHI
dry
dry dry
dry
Standard Standard Standard Standard M Series
Dry Running Vacuum Pump
Issue Date: November 21, 2016 Copyright: FLOWSERVE SIHI Pumps Rev 1
10.5.1 Disassembly
In this section the disassembly of the vacuum pump is described. All parts must be replaced only by
original spare parts to ensure the reliable operation of the pump. The disassembly should start at
suction side.
10.5.1.1 Preparation
Notice! Removing remaining fluid / solids.
Therefore:
Before working on the pump any remaining fluid and
solids residues must be removed by flushing the
pump with a suitable liquid in order to avoid any
injuries when opening the pump.
Danger! Toxic Media.
Therefore:
Caution when handling dangerous or toxic
substances. Flushing does not guarantee in every
case that all areas are cleaned in such a way that
they become free from residues. Especially in the gap
between the bearing casing and inner wall of the rotor
units, residues of fluids or solids may remain. These
residues cannot be removed by means of flushing.
The preparations for the disassembly have to be carried out as described in chapter 9 shutdown
instructions.
1. Isolate the power supply of the pump.
2. Drain the pump and adjacent pipelines / fittings between the shut off valves in suction and
discharge lines.
3. Remove the suction and discharge line and all attached fittings.
4. Separate the cooling water supply at the motor casing and cooling water outlet on top of the
pump casing and drain cooling water. When doing so note that cooling water remains in the
cooling spiral mounted inside of the screw pump casing. Plug connections to avoid spillage.
5. Remove (if fitted) all temperature transmitters from the pump casing.
10.5.1.2 Removal of the Suction Cover
The housing cover (16.20) can be lifted by
hand from the spindle pump casing.
1. The housing cover is removed from the
pump casing by unscrewing the 8 hexagon
head screws M10x45 (90.12).
2. Remove the suction cover (16.20) from
the pump casing (10.30) and put it on a
clean surface. Check the machined face
for no marks or scratches (sealing may be
affected).
3. Remove the ‘O’-ring (41.20) from its
groove in the top of the pump casing and
replace with by new ring during
reassembly. [Clean the groove]
Figure 26: Removal of suction cover