AU
9
6.1 First
start-up
The pump cannot operate with a closed impulsion
valve, as this may lead to overheating of the pumped
liquid. If it is necessary to work with the discharge valve
closed, a minimum flow relief device is required at the output.
This device does not form part of the pump and will be
separate from the pump's discharge flange.
Other recommended devices include the constant
output orifice plates, constant bypass valves and
automatic recirculation valves. If you require further details,
please check with KSB ITUR.
The pump cannot work in closed suction valve
conditions. If this condition may come about, the plant
operator must use a device which detects this condition and
forces the pump to halt when it occurs.
6.1.1 Lubricant
Monobloc pumps do not have friction bearings, meaning they
do not require lubricant.
BEARINGS:
Lubricated with grease. PUMP WITHOUT GREASE
NIPPLES:
The pump bearings are closed on both sides and
have lifetime lubrication. Lubricant is not required.
Lubricated with grease. PUMP WITH GREASE NIPPLES:
The pump leaves the factory with the bearings greased for
approximately 1000 hours of operation. See lubricant in
section 7.2.2.
Pumps lubricated with oil:
The pump
leaves the factory without oil in the bearings
support. Once installed, proceed to fill it. See lubricant in
section 7.2.2.
See section 7.2.2 to know the type of lubrication of each pump
FRICTION BEARINGS:
Lubricated with pumping fluid If the pumped fluid is clean
(without particles in suspension) and non-aggressive, the
friction bearings are lubricated with the pumped fluid.
Lubricant is not required.
The bearings must be lubricated with oil/grease in a
good state, to which end it is essential to follow the
lubrication instructions indicated in 7.2.2.
If the bearings support suffers impediments which
prevent correct air-cooling, the resulting excess
temperature may be excessive for the classification
temperature class. For this reason, the support must be kept
free of obstacles, thus facilitating natural air cooling.
6.1.2
Filling (priming) of the pump
The pump must be primed before starting up for the first time
or following a long period of inactivity. To do this:
EQUIPMENT IN LOAD:
1. Disconnect the voltage from the motor or batteries.
2. Close the suction valve and the discharge valve.
3. Remove the venting plug located in the casing or open a
discharge pipe vent (before the check valve).
4. Partially open the suction valve until the liquid overflows
through the vent.
5. Close the vent.
6. Fully open the suction valve.
7. Check the rotation direction of the pump.
8. Fully open the discharge valve.
EQUIPMENT IN SUCTION
1. Disconnect the voltage from the motor or batteries.
2. Close the discharge valve.
3. Remove the venting plug located in the casing or
open a discharge pipe vent (before the check valve).
4. Pour the liquid to be pumped through the vent until it
overflows.
5. Close the vent.
6. Check the rotation direction of the pump.
7. Fully open the discharge valve.
The priming should be checked in subsequent start-ups.
Shaft sealing
Packing: The gland nuts must be gently tightened (by hand).
The gland must form a right angle to the shaft. There should
be a larger leak after filling the pump and before starting up.
Mechanical seal: The mechanical seal does not require
maintenance. Check that there are no leaks.
6.1.3 Final
control
Make the final check of the group alignment in accordance
with 5.2. The coupling/shaft must allow easy manual rotation.
Note
Check all the auxiliary connections are
correct and functioning.
Note
According to the
rules on the prevention of
accidents at work
, equipment cannot be started up
without protection for the coupling. If the buyer has
expressly requested that this guard be excluded from supply,
it must be provided by the user.
Before and during the operation of the pump, the
coupling guard must be in place and firmly secured.
Regularly check this state in order to prevent problems
resulting from incorrect positioning or deficient attachment.
The coupling guard must be free of any foreign elements.
6.1.4 Start-up
Before starting up the group, check all the sections with
regards to chapter 6.
The start-up must be carried out with the suction valve
completely open and the impulsion valve partially closed.
Once the pump has reached its service speed and the suction
air has been eliminated, regulate the operation point using the
impulsion valve.
If the electric motor guard is triggered when starting up, close
the impulsion valve more until the equipment starts up
normally.
The pump must NEVER work with zero flow or flow
which is less than the operating minimum, as internal
recirculation will cause the fluid to heat up quickly,
leading to hazards (including explosion) as a result of the high
pressures reached within the frame. Check the minimum flow
in the operation curves.
