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•If the direction of rotation is incorrect, proceed as follows:
– When using Salmson switchgear:
– The Salmson switchgear is designed so that the connected
pump is operated in the correct direction of rotation. If the
direction of rotation is wrong, 2 phases/conductors of the
mains power supply to the switchgear must be changed
over.
– In the case of switchboxes provided on site:
– If the direction of rotation is wrong, change over 2 phases.
8.2 Setting the level control device
CAUTION! Danger of property damage!
Do not allow the mechanical seal to run dry!
Dry running shortens the service life of the motor and
the mechanical seal. If the mechanical seal is dam-
aged, small amounts of oil may escape into the
pumped fluid.
The water level must not drop below the permitted minimum
switch-off level.
•See the installation and operating instructions for the level con-
trol device.
The switch-off point must be chosen so that the operating con-
ditions indicated in Intended use Intended use are met.
The water level (
min ) (FIG. 2, 3, 4) may only be reduced to
the upper edge of the motor (
ing jacket). The level control is to be set at this minimum level.
8.3 Operating conditions in a potentially explosive
environment
See additional operating instructions for
9. MAINTENANCE
Maintenance and repairs may only be carried out by qualified
experts!
It is recommended that the pump is maintained and checked
by Salmson After-Sales Service.
DANGER! Risk of fatal injury!
There is a mortal danger through shock when working
on electrical equipment.
• Work on electrical equipment may only be done by
electricians approved by the local electricity supplier.
•Before working on electrical equipment, switch it off
and prevent it from being switched on again.
•Follow the installation and operating instructions for the
pump, level control device and other accessories.
DANGER! Danger of suffocation
Toxic or health-hazardous substances in sewage sumps
may lead to infections or suffocation.
•Only work in the pump sump when another person is
present outside the sump.
•Always wear protective clothing, mouth protection and
gloves when working.
9.1 Maintenance intervals
Pump stations with FVO 206 pumps must be maintained by
qualified personnel according to EN12056-4. The intervals must
not exceed:
•¼ year in the case of commercial companies
•½ year in the case of apartment building stations
•1 year in the case of detached house stations
The system operator must make sure that all the maintenance,
inspection and installation work is done by authorised and
qualified personnel, who have acquainted themselves suffi-
ciently with the system through a detailed study of the installa-
tion and operating instructions.
min* Construction with cool-
NOTE: When drafting a maintenance plan, expensive
repairs can be avoided and a fault-free operation of
the system can be achieved with a minimum of main-
tenance effort. The Salmson-After-Sales Service is avail-
able for commissioning and maintenance work. A
maintenance report must be issued.
9.2 Maintenance procedure
•Open pump sump, station and ventilate.
•Inspect the inside visually
– Deposits on the pump, sump floor and on the accessories
•Shut off sewage inlet(s) (e.g. with air plugs)
•Measure the pump delivery head when Q = 0 m³/h.
– If the flow rate of the pump drops by more than 10%, lift it
out of the sump. Then check the impeller and the pump
housing for wear.
•Check the sump level.
•Drain the sump manually until slurping operation.
– Check the sump floor for deposits.
– Clean the sump if there are major deposits.
•Fill the sump and carry out a trial run.
•If the delivery head cannot be measured
– Wait until the sump is filled and the pump starts up
– Measure the time between switching on and off (t) and also
the drop in level (Δh).
– Calculate the flow rate according to the following formula.
With the horizontal section A, the following general formula
can be used:
2
] x Δh [cm] / t [s]
Q [m³/h] = 36 x A [m
Sump type
Formula
Q [m³/h] = 28.3 x Δh [cm] / t [s]
Sump Ø1000
Q [m³/h] = 63.6 x Δh [cm] / t [s]
Sump Ø1500
Q [m³/h] = 113.1 x Δh [cm] / t [s]
Sump Ø2000
Q [m³/h] = 36 x A [m] x B [m] x Δh [cm] / t [s]
Square sump
9.3 Oil change
WARNING! Risk of injury!
The pumps are heavy and can fall over.
People may be injured if the pump is not properly
secured during maintenance work.
Always check the stability of the pump and use suitable
hoisting gear.
WARNING! Risk of injury!
An overpressure may prevail in the sealing chamber/
separation chamber.
If the oil drain plug is undone, hot oil may spurt out
under pressure and cause injury or scalding. Before
changing the oil, put on protective goggles and undo
the oil drain plug with care.
WARNING! Danger to the environment!
Oil may leak out if the pump is damaged or dismantled.
This can damage the environment.
Avoid damage and adopt suitable measures to take
up the oil.
Have the oil changed once a year or after 1000 operating
hours during a maintenance operation.
•Provide suitable hoisting gear depending on the weight of the
pump.
•Oil type and fill volumes: see 5.2 Technical data.
NOTE: When you change the oil, the old oil and water
have to be disposed of as hazardous waste!
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