English (GB)
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9. Start-up
Proceed as follows:
1. Remove the fuses or switch off the mains switch.
2. Check the motor liquid level in the cooling chamber.
See section 10.1 Checking and changing the motor liquid.
3. Check whether the impeller can rotate freely.
4. Check whether the monitoring units, if used, are operating
satisfactorily.
5. For pumps in a submerged installation, make sure that the
pump is submerged in the liquid.
6. For pumps in a dry installation, make sure that there is liquid in
the tank supplying the pumped liquid.
7. Open the isolating valves, if fitted.
8. Check whether the system has been filled with liquid and
vented.
9. Check the setting of the level switches.
10.Start the pump and check the pump operation for abnormal
noise or vibrations.
11.After start-up, the actual pump duty point must be established
as accurately as possible so that it can be checked whether
the operating conditions are as desired.
The operation of the pump should always take place in
accordance with established routines with scheduled checks of
pump monitoring equipment and accessories (valves, etc.). Make
sure that the pump and equipment settings cannot be changed by
unauthorised persons.
10. Maintenance and service
Maintenance and service must be carried out by specially trained
persons.
Before carrying out maintenance and service, make sure that the
pump has been thoroughly flushed with clean water. Rinse the
pump parts in water after dismantling.
Pumps running normal operation should be inspected every
2000 operating hours or at least once a year. If the pumped liquid
is very muddy or sandy, the pump should be inspected every
1000 operating hours or every six months.
The following points should be checked:
• power consumption
• motor liquid level.
When the pump is new or after replacement of the shaft seals,
check the motor liquid level and its water content after one week
of operation. If the motor liquid level has dropped, the shaft seal
may be defective. See section 10.1 Checking and changing the
motor liquid.
• Cable entry
Make sure that the cable entry is waterproof and that the
cables are not sharply bent or pinched.
See section 8.3 Cable data
• Impeller clearance
Check the impeller clearance. See section 10.2 Inspection and
adjustment of impeller clearance.
• Pump parts
Check the pump housing etc. for possible wear. Replace
defective parts.
• Ball bearings
Check the shaft for noisy or heavy operation (turn the shaft by
hand). Replace defective ball bearings. A general overhaul of
the pump is usually required in case of defective ball bearings
or poor motor function. This work must be carried out by an
authorised service workshop.
Warning
Before manual starting or changeover to
automatic control, make sure that no persons are
working on or near the pump.
Warning
Before the first start-up and after a long standstill
period, make sure that the pump has been filled
with pumped liquid.
In case of abnormal noise or vibrations from the
pump or other pump or liquid supply failures,
stop the pump immediately. Do not attempt to
restart the pump until the cause of the fault has
been found and the fault corrected.
The pump may only be started for a very short
period without being submerged for checking of
direction of rotation.
Warning
During maintenance and service, including
transportation to service workshop, always
support the pump by means of lifting chains or
place it in horizontal position to secure stability.
Warning
Before starting work on the pump, make sure that
the fuses have been removed or the mains switch
has been switched off. It must be ensured that the
power supply cannot be accidentally switched
on. All rotating parts must have stopped moving.
Dispose of the motor liquid in accordance with
local regulations.
Number of poles Quantity of motor liquid
SE
[ltr.]
SL
[ltr.]
212.84.5
412.84.5
614.15.4
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