2013/09 - Kessel

6. Commissioning
6.1 General instructions
The commissioning of lifting stations should follow DIN 1986
Part 31.
After complete and proper installation and connection of all listing
station components as well as accessories and pipe / electrical
work, the lifting station can be placed into operation.
The outlet closure valve of each pump must be in the open position.
Important: The commissioning of the Aqualift F should be
handled by a licensed professional.
Confirm before commissioning that the local voltage and power
meets the requirement of the lifting station. Again check all
connections as well as cables – is the mains ON/OFF switch
functioning? Are all local and international electrical regulations
met? Are all the explosion proof requirements for a lifting station
met?
Do not place the lifting station into operation if any damage to
the motor, control unit, cable or lifting station is visible.
Please follow all safety instructions in Chapter 1 of the manual.
This lifting station is not approved for pumping any fluids / mediums
which are not approved for the lifting station materials.
Before placing the system into operation make sure that all electrical
connections are done in accordance with Chapter 5 of
this manual.
Check:
- The operational data
- The oil level
- The rotation of the pumps
- The electrical connections
- Proper installation of the motors / pumps
The pump must be completely filled with the pumping
medium in order to prevent an explosive atmosphere from
developing. The pump can only be operated so that air cannot
enter the pump housing.
Commissioning
Before commissioning it must be checked that the wastewater
level is not below the ‘Minimum Wastewater Level’ (See
Section 4.4). During S1 operation of the pump, the pump should
be completely submersed. Operating the pump not submerged
will cause premature wear and tear on the pump.
6.1.1 Intake of floating matter
Pumps with S-impellers are recommended for pumping wastewaters
with floating matter. In these cases, it is recommended
that the pumps run in a slightly tilted position. In addition,
S-impellered pumps should run for an additional 10 seconds
after the intake level has been reached.
6.1.2 Pumping medium temperature
Max pumping medium temperature of explosion rated
pumps is 40 deg C. The operator of this pumpstation must
ensure that the operational temperature of this system (pumping
medium temperature) does not exceed this level.
Do not operate this system with pumping mediums above
the noted maximum temperature
6.1.3 Pump Starts
The maximum pump starts per hour must not exceed 30.
6.1.4 Operating Voltage
The highest allowable departure from operating voltage is:
± 10% with non explosion proof systems
± 10% with explosion proof systems
The maximum allowable voltage difference between the phases
is 1%
6.1.5 Density of Pumping Medium
The max specific weight of the pumping medium is 1.1. Please
contact the manufacturer for using this system with pumping
mediums with a specific weight greater than 1.1.
6.2 Non-operating conditions / Storage
6.2.1 Storage of new pumps
- Pumps should be stored in the vertical position in a dry location
in their original packaging
- Spray the interior side of the pump housing with oil.
6.2.2 Requirements for longer duration storage
6.2.2.1 Pump check without pump removal
In order to insure proper pump operation, the pumps should be
manually run 4 times per year for a short period of time (approx
1 minute). Pre-requisite to this check is that sufficient
pumping medium is inside the pumping chamber (above Level
1 mark – see illustration in. 4.3)
6.2.2.2 Storage of removed pumps
Before storing pumps that have already been in service, all
check up and maintenance work should take place including lubricating
the pumps as discussed in 6.2.1
Operating the pumps in non-submersible conditions causes
excessive wear and tear on the pumps and should be
prevented
58