Before starting the pump, dismantle and clean the suction pipe. Any
foreign material in the pump should be removed.
3.1 Checking the pump body for foreign material
Remove the pump body as described below. The assembly drawing is
to be used for reference (page 2).
1. Disconnect the power supply.
2. Remove the pump body (item 1a,1b) by undoing the clamp ring
(item 9a) or body screws and carefully pull off the pump body
3. Turn the impeller (item 4) to ensure that there is no foreign
material behind it.
4. If there is any foreign material in the pump, remove it.
5. When the pump body is clean and free of foreign material, reas
semble the pump.
Mount the pump body as described below:
6. Check that the locating pin (item 8), where fitted, in the top of the
back plate mates with the half hole in the pump body and
carefully, to avoid damaging the O-ring, press the pump body
(item 1a,1b) in over the O-ring (item 6) and fasten with the clamp
ring (item 9a) or body screws, observing the correct tightening
torque.
M8: 30 Nm (22 lbf ft)
M10: 55 Nm (41 lbf ft)
M16: 180 Nm (132 lbf ft)
7. Install suction and discharge pipes. Check that the pipe unions
have been tightened properly and that pipe supports have been
fitted.
To make the pump body easier to fit, we recommend that you give the
O-ring a thin layer of food-approved, acid-free grease or soap.
3.2 Testing the pump
To check that the pump is working satisfactorily, pour water into the
pump and start it for a moment. Check the direction of rotation (fig. 2).
Listen for any unusual noises.
In pumps with water-flushed or steam-flushed shaft seals, the seal
chamber must be filled with water/steam.
Never allow the pump to run without liquid, as this will ruin the shaft
seal.
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. 15-30 l/hour).
3. Before start-up
4. Putting the pump into service
Fig. 2
381326 ISS Q 11.95
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