BOMBAS IDEAL RNI Series Use And Maintenance Instructions page 27

Bombas Ideal, S.A.
9. RUNNING, STARTING AND STOPPING
The operation of centrifugal pumps as RN, RNI and RNE is a simple and safe matter. Pump should not be used
for any purpose other than the one it was prepared for. If the conditions in the installation have varied, Bombas
Ideal S.A. or one of its technical services should be informed, in order to determine what changes might be
required to adapt to the new requirements.
9.1. Starting up.
Before starting up the following points should be taken into account:
1. Check the proper priming of the pump and pipelines, as the fluid should overflow the system to ensure
that all the air has been vented, especially any contained in the suction piping.
2. The packing should be properly placed and gently tightened.
3. Check that the shaft turns easily with your hand.
4. Check the alignment of the set in as described in 8.3.
5. Make sure that the sense of rotation coincides with the direction of the arrow located on the pump
body.
6. In the case of oil lubrication, check the filling level of the bearing box.
7. In the event of cooled sealing boxes, check the proper circulation of the cooling liquid.
8. Check that all the guards for the moving parts have been properly fitted.
For the first start up, after making all the checks, this should be done with the drive valve closed, to reduce
the consumption of the pump as far as possible. When the running speed has been reached, the valve should
slowly be opened, observing at the same time the variation in consumption, until this opens completely. In
normal operation the consumption, measured in amperes, should not be over what is stated on the motor plate.
9.2. Stopping the pump
To stop the pump, the delivery valve should be returned to the original position as before the start up. When
installation has a anti-water hammer device there is no need to close the delivery valve for stopping the pump.
Check that motor deceleration is normal and after it has completely stopped close the auxiliary circuits.
When the equipment is to be idle for long periods, the pump and piping should be completely drained, to
prevent the risks of frost during the winter and any possible rusting of the mechanical items that might be
caused through trapped liquid.
10. HANDLING AND CONTROLS
Centrifugal pumps performance is simple and safe and does not require any exhaustive checking, though to
guarantee proper operation it is important to take the following points into account both the first time this is
started up and after a long period running:
1. Operation should be silent and vibration-free. After the first 200 hours' use, check proper alignment
of the pump-drive set as described in 8.3.- Alignment of the set.
2. Check that the flow and service pressure match what is determined in the work fields (see the relevant
technical documentation from Bombas Ideal S.A.).
3. For equipment with electrical motors, check that the input current (consumption in amperes) is not
over the values stated in the motor characteristics plate.
4. The heat produced by friction between the packing and the shaft (in the case of pumps supplied with
packing) is removed by cooling with the same liquid as is pumped through, for which purpose a slight
drip should be ensured. If the dripping is too high and cannot be reduced by tightening the stuffing
box, the packing will have to be replaced as described in the Maintenance section.
27