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7. INSTALLATION AND ELECTRICAL CONNECTION
DANGER! Risk of fatal injury!
Improper installation and improper electrical connec-
tions can result in a risk of fatal injury.
•The installation and electrical connections should only
be done by properly skilled staff and in compliance
with applicable regulations!
•Follow all accident prevention regulations!
7.1 Installation
The pump was deigned both for fixed and for mobile installa-
tion.
CAUTION! Danger of material damage!
Danger of damage due to improper handling.
Lift the pump using a chain or a rope attached to the
handle. Never lift using the power / float switch cable or
on the pipe / hose connection.
The installation site and shaft for the pump must be frost-free.
The
shaft
must
be
(„MINI SUBSON MF...") is guaranteed free movement.
The diameter of the pressure pipe (pipe / hose connection)
may not be less than the diameter of the pump's pressure port.
To avoid loss of pressure, make the pipe connection one size
larger.
Connection of the pressure pipe
•Pipe connection: For a fixed pump installation, we recom-
mend the use of the coupling supplied (Rp 1 / Rp 1¼) with an
integrated non-return valve.
Seal the pipe connections to the pump pressure port with
Teflon tape. Constant leaks in this area lead to the destruction
of the non-return valve and the screwed connection.
To prevent any flow back from the public sewer, the pressure
pipe should be arched so as to pass above the locally deter-
mined backflow level (usually street level).
•Hose connection: The hose nozzle enables a hose (Ø 20 or 25
mm) to be connected. The diameter of the hose nozzle may
have to be adapted by cutting off the upper part to corre-
spond to the diameter of the hose.
With a mobile installation, the pump should be secured in the
shaft concerned to prevent it from falling over or wandering
off. (e.g. fix the chain with a small amount of tension).
NOTE: When used in a pit without a firm base, the pump
must be put on a sufficiently large plate or hung from a
rope or a chain in a suitable position.
7.2 Electrical connection
DANGER! Risk of fatal injury!
If the electrical connection is not made properly, there
is a risk of fatal injury from an electric shock.
The electrical connection must be made by an electri-
cian approved by the local energy supply company in
compliance with the applicable local regulations [e.g.
VDE regulations].
•The type of power supply and its voltage must correspond to
the specifications on the name plate,
•Fuse in the power supply: 10 A, slow blow,
•Earth the system as required by regulations,
•We recommend the installation of a protective residual cur-
rent device (RCD) with a trip current of < 30 mA (this is manda-
tory, when used outdoors!).
•To connect the pump to switchgear, the power supply plug
has to be cut off and the connection cable then has to be
wired as follows:
such
that
the
float
Wire
brown
blue
green/yellow
The power socket or switchgear must be installed in a dry
space that can not be flooded.
8. COMMISSIONING
CAUTION! Risk of damage to the pump!
The pump must not run dry. Running dry shortens the life
of the motor and of the mechanical seal.
You must ensure that the float switch is completely free to
move (MINI SUBSON MF...). The switch must turn the pump off
before it can suck air in..
Adjusting the switch level of the float switch
The switching level (point to switch on/off) can be adjusted by
sliding the cable to the float switch within the holding ring.
If necessary, water can be pumped away to a level of at least
switch
5 mm by manually lifting the float switch.
The inward flow of water in the shaft should not be aimed
directly at the pump's suction basket. This can cause air bub-
bles to be introduced into the pump, preventing the pump
from working properly when starting.
The maximum flow rate into the shaft must not exceed the
maximum pump flow rate. Observe the shaft closely during the
commissioning.
9. MAINTENANCE
WARNING! Danger of electric shock!
Dangers from electrical energy must be eliminated
•For all maintenance and repair work on the pump, it
must be electrically isolated and unauthorised switch-
on must be prevented.
•Any damage to the connection cable must always be
repaired by a properly qualified electrician.
To prevent the pump from seizing, owing to longer periods of
disuse, its proper working should be checked at regular inter-
vals (every 2 months) by manually lifting the float switch or by
directly switching it on, to let the pump run briefly.
Even a small amount of wear on the shaft seal ring or the
mechanical seal can lead to pollution of the pumped liquid,
owing to oil leaking from the oil chamber.
The encapsulated motor may only be opened by specialist
companies or by Salmson customer service.
9.1 Cleaning the pump
Depending on how the pump is used, impurities can be depos-
ited within the suction basket or impeller. After use, wash the
pump down under running water.
1. Remove the power. Remove the power plug!
2. Empty the pump
3. The suction basket snaps into the pump housing. Use a
screwdriver to push the catches back and remove the suc-
tion basket.
4. Clean the basket under running water.
5. Undo the 4 screws on the lower part of the pump housing
and remove the housing. Take care with the O-ring
between the pump housing and the motor housing.
6. Clean the impeller and pump housing under running water.
The impeller must turn freely.
7. Damaged or worn parts must be replaced with original
spare parts.
8. Reassemble the pump in the reverse order.
12
Terminal
L1
N
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