KSB moviBOOST Vt, Manual

Page: 15 / 24

moviBOOST Vt
14
8 Dismantling / reassembling the
pumps
The pumps can be individually dismantled to facilitate
maintenance.
Dismantling sequence :
1. Disconnect the pump from the power supply.
De-energize the pump via the motor protection switch.
2. Close the suction and discharge side valves.
Reassembly :
1. Insert pump (original spare part only), always use new
gaskets for unions and tighten. Check tightness of screwed
connection !
2. Fasten the pump foot to the baseplate using hexagon head
bolts.
3. Connect to power supply, switch on motor protection switch.
9 Returning to service
Return the unit to service as described under Commissioning/
start-up.
10 Maintenance
10.1 Operation monitoring
All technical systems require a certain degree of monitoring. The
same applies to our package units for which the following checks
and inspections are prescribed :
- Check the unit’s readiness for operation.
- Check the operation check run, if activated.
- With the aid of the pressure gauge, compare the start and
stop pressures of the pumps against the data on the name
plate.
- The pump’s mechanical seal allows little or no visible leakage.
It is maintenance-free.
- The motor requires practically no maintenance.
- Verify whether the accumulator pre-charge pressure
corresponds to the data in the pre-charge pressure table (see
section 14). Close the shut-off elements under the
accumulator for this purpose and drain the accumulator via
the drain valve. Remove the protective cap of the accumulator
valve and check the pressure with the aid of a tyre pressure
gauge. Add nitrogen as necessary.
Do not add any other gases.
11 Work on the control cabinet
Each pump can be switched off via the motor protection
switch.
The motor protection switches can be locked with a
padlock as a standard.
The pumps can be stopped by using the manual-0-
automatic switch (supplementary equipment). However,
this will not disconnect the system from the power
supply , i.e. all electric devices are still live, even if the
pumps are not in automatic operation mode.
Prior to working on the control cabinet or opening the motor
terminal box, set the master switch to “0” and unscrew
the back-up fuse.
Do not tamper with the control unit, which should only be
serviced by KSB’s customer service.
Prior to opening any electric equipment such as control
cabinet and motor terminal box, de-energize the system.
Even when the mains lamp goes out, check whether all
phases are actually dead prior to performing any work on
the control cabinet.
Control cabinet maintenance
It is recommended to have the control cabinet serviced once a
year. For this purpose you can take out a maintenance contract
with one of KSB’s Service Partners.
12 Inspection
KSB offers inspection services to relieve you as far as possible
of the routine necessity of inspecting your moviBOOST package
system(s). Take advantage of this additional after-sales service
by taking out a maintenance contract with KSB. Get in touch
with your Service Partner for details.
13 Check list
In the event that you decide to conduct your own inspections,
proceed according to the following check list at least once a year
:
1. Check the pumps and drives for quiet running and the
mechanical seal for integrity.
2. Check the flexible transmission element for wear.
3. Check the function and seal condition of the shut-off, drain
and non-return valves.
4. Clean the strainer in the pressure reducer (if applicable).
5. Check the expansion joints for wear (if applicable).
6. Verify the pre-charge pressure level and check the
accumulator for integrity, if required (see section 14 pre-set
pressure table).
7. Check automatic switching.
8. Check the ON and OFF points of the system.
9. Check if the functional check run is working.
10. Check the function of the overall system and compare the
actual data with the name plate data.
11. Check the water inlet, inlet pressure, lack-of-water
monitoring, flow monitoring and pressure reducer.
12. Check the inlet tank and float valve, if applicable. Check the
overflow for integrity and cleanliness.