Wilo Drain STS 40 A Série Notice De Montage Et De Mise En Service page 13

7.1.2 Portable wet installation
For portable wet installation with hose connec-
tion, the pump must be secured in the pit against
moving or falling over (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
electrician approved by the local energy supply
company in compliance with the applicable local
regulations.
• The type of power supply (single phase or 3 phase)
and its voltage must correspond to the specifica-
tions on the name plate
• Fuse in the power supply: 16 A, slow blow
• Earth the system as required by regulations
• Using a residual current device ≤ 30 mA
• Using a mains disconnection device with an open-
ing of at least 3 mm
• The pump is ready for connection.
Pump with three-phase motor (3~400V):
For the three-phase connection, connect the
wires at the free end of the cable as follows:
4-wire connection cable: 4x1,0 mm²
Wire Terminal
brown U
black V
blue W
green/yellow PE
Wire up the free end of the cable in the switch box
(see the installation and operating instructions of
the switch box).
8 Commissioning
DANGER! Beware of electric shock!
The pump may not be used to empty swimming
pools, garden ponds or similar if there are people
in the water.
CAUTION! Danger of material damage!
Before installation, clean the pond and the sup-
ply pipes from all solid materials such as rubble.
8.1 Checking the direction of rotation (three-phase
motors only)
NOTE: If the pump is running in the wrong sense,
the flow is significantly reduced.
You must check the direction of rotation of the
pump before you immerse it. An arrow on the top
of the motor housing shows the correct direction
of rotation.
Installation and operating instructions Wilo-Drain STS 40
• Hold the pump in your hand.
• Switch the pump on briefly. The pump recoils in
the opposite direction (anticlockwise) to the
motor's direction of rotation.
• If the direction of rotation is incorrect, swap two
phases of the mains connection.
8.2 Adjusting the level control
CAUTION! Danger of material damage!
Do not allow the mechanical seal to run dry.
Dry running shortens the life of the motor and
the mechanical seal. If the mechanical seal is
damaged, small amounts of oil may escape into
the pumped fluid.
• The water level may not sink below the minimum
pump immersion depth. Set the level control to
the following minimum level: Fig. 2a, 2b
• Min 90 mm: Operating mode S3: see Technical
data
• Min 250 mm: Operating mode S1: see Technical
data
• When filling the shaft or powering the pump into
the pit, make sure the float switch (Wilo-Drain STS
40) can move freely.
• Switch on the pump.
9 Maintenance
Maintenance and repairs may only be carried out
by qualified experts!
WARNING! Beware of infection!
Wear suitable protective clothing (safety
gloves) for maintenance in order to prevent any
risk of infection.
Danger! Beware of fatal injury!
When working on electrical equipment, there is
a risk of a fatal shock.
• For all maintenance and repair work on the
pump, it must be electrically isolated and unau-
thorised switch-on must be prevented.
• Any damage to the connection cable must
always be repaired by a properly qualified elec-
trician.
• Change the oil in the mechanical seal chamber
once a year.
• Unscrew the oil drain plug with seal ring
(Fig. 3, Pos. A).
• Lay the pump on its side until oil flows out (catch
it in a suitable receptacle and take it for proper
disposal).
NOTE: When you change the oil, the old oil and
water have to be disposed of as hazardous waste.
The oil is not biodegradable.
• Fill the pump with new oil (see Technical data).
• Screw in the oil drain plug and seal ring.
English
11