RC, RCV
10
5.4.3
Check rotation direction.
Check the motor rotation direction by starting
up and immediately shutting down. The
rotation direction must correspond with that shown by the
pump arrow located on the pump casing or support. If the
rotation direction is not correct, any two phases L1, L2 or L3 of
the power cable must be inverted in the motor terminal box.
Should the process require the rotation direction of the
supplied pump to be inverted, check with KSB ITUR.
The incorrect rotation of the pump may lead to the incorrect
operation of the seal and the heating of its faces. For this
reason, correct rotation direction must be ensured using the
arrow shown on the pump, with the pump completely filled
with liquid and properly vented.
6
Start-up
Before starting up, both the pump and the mechanical seal
process pipes, where appropriate, must be completely filled
with liquid.
It is necessary to prevent the formation of explosive
atmosphere inside. Although there are interior evacuation
conducts which remove the possibility of the air becoming
blocked, it is necessary to fully vent the pump and its process
pipes, when fitted, before starting up the pump.
Start-up shall be carried out when all the necessary
mechanical, hydraulic, electrical and pneumatic connections
are complete. The coupling guard must as well be in place
and firmly secured.
The safety bypass valve should be regulated before starting
up, bearing in mind the work pressure values and the
maximum permitted by the facility.
Motor checks.
When making the electrical connection, ensure the
type of current and nominal voltage shown on the
motor's factory plate concur with the type of current
and the mains voltage in the place of installation.
Follow the indications described in the motor manual.
Checks in diesel or petrol motor.
Follow the manufacturer's instructions provided with the
equipment.
6.1
First start-up
The pump cannot operate with a closed impulsion
valve, as this may lead to excess pressure of the
pumped liquid.
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
shutdown when it occurs.
6.1.1
Lubricant
BEARINGS:
Lubricated with pumping fluid:
The pump bearings are
lubricated with the pumped fluid. Lubricant is not required.
FRICTION BEARING BUSHES:
Lubricated with pumping fluid
: The pump friction bearing
bushes are lubricated with the pumped fluid. Lubricant is not
required.
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:
If it is wished that the equipment in suction is self-primed,
proceed to an installation with siphon as indicated in the figure
. If such installation is not possible proceed as follows:
1. Disconnect the voltage from the motor or batteries.
2. Remove the venting plug located in the casing or
open a discharge pipe vent (before the check valve).
3. Close the discharge 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
Mechanical seal: The mechanical seal does not require
maintenance. Check that there are no leaks.
Lip seal: Check that there are no leaks
6.1.3
Final control
Make the final check of the group alignment in accordance
with
. The coupling/shaft must allow easy manual rotation.
Check all the auxiliary connections are
correct and functioning.
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
-
Start-up must be with the suction and impulsion valves
fully open.
-
During the priming stage, check that all the suction pipe
air is perfectly discharged.
Note
Note
