
13
453345 ISS S 07.2010
Check the following before starting the pump:
- that the shaft guard has been fitted properly
- that there is free access for liquid
- that the valve on the discharge side is closed
The valve on the discharge side (if fitted) is closed during start-up to
reduce motor starting current, but should be opened again as soon as
the pump has been started.
4.1 Flushing water/steam/condensate etc.
In pumps with a flushed shaft seal, check that the supply of flushing
medium is open and that the flow of the medium is adequate
(approx. 4-8 gallons/hour).
5.1 Checking the shaft seal
Check the pump’s shaft seal for leaks on a regular basis. If the shaft
seal is leaking, replace it or its relevant parts as described below.
5.2 Replacing the shaft seal
The assembly drawing shows the position and construction of the shaft
seal - both ordinary seals and seals with water/steam flushing.
To replace the shaft seal, it is necessary to dismantle the pump as
described below. The assembly drawing on page 8 is to be used for
reference.
1.
Disconnect the power supply in the motor isolator by removing the
fuses and disconnecting the cables.
2.
Turn off the steam and flushing water supply.
3.
Close the inlet and discharge of the pump, and make sure that
there is no liquid in the pump body.
If the pump is used for hot and/or aggressive liquids, special
precau tions must be taken. In such cases, observe the local
regula tions for personal protection when working with these
products.
4.
Once the inlet and outlet pipes have been closed properly, release
the clamp ring (item 9a) or body screws, take off the pump body
(item 1a) and remove the impeller (item 4).
5.
Remove the stationary seal face (item 5.6) mounted in the back
plate (item 7a) with your fingers.
6.
Remove the O-ring (item 5.5) from the stationary seal face.
7.
Use your fingers to remove the rotary seal face (item 5.7) mounted
in the impeller (item 4).
4. Putting the Pump into Service
5. Maintenance
Dismantling the pump
Dismantling the shaft seal
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