English
16
WILO AG 05/2008
Connecting cable
• Allocate the connecting cable wires as follows:
Pumps with P
2
1.5 kW:
Pumps with P
2
= 1.5 kW to 4.0 kW:
Wire the free cable end in the switchbox (see
Switchbox installation and operating instruc-
tions).
8 Commissioning
DANGER!
Danger through electric shock!
The pump must not be used for draining swim-
ming pools, garden ponds or similar installations
if anyone is in the water.
CAUTION! Danger of property damage!
Before installation, clear the pond and the sup-
ply pipes of all solid materials such as rubble.
8.1 Checking the direction of rotation (three-phase
motors only)
WARNING! Risk of injury!
• Jerking occurs when the freely suspended pump
is switched on. People may be injured if the
pump drops down. Make sure that the pump is
safely suspended and cannot drop down.
• The rotating impeller creates an increased risk
of injury. Do not reach into the pump housing
during operation.
The pumps are checked for the correct direction
of operation and set at the works.
Check that the pump is rotating in the correct
direction before submersion.
• To do this, suspend the pump safely in a hoist.
• 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, proceed as
follows:
• When using Wilo switchgear:
• The Wilo 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 damaged, small amounts of oil may
escape into the pumped fluid.
The water level must not drop below the permit-
ted minimum switch-off level.
• See the installation and operating instructions for
the level control device.
The switch-off point must be chosen so that the
operating conditions indicated in Intended use are
met.
The water level (
T
min
) (Fig. 2, 3, 4) may only
be reduced to the upper edge of the motor
(
T
min*
Construction with cooling 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 Wilo 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 instruc-
tions 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 per-
son is present outside the sump.
• Always wear protective clothing, mouth protec-
tion and gloves when working.
9.1 Maintenance intervals
Pump stations with Wilo-Drain STS 65 pumps
must be maintained by qualified personnel
according to EN 12056-4. 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 sufficiently with the
system through a detailed study of the installation
and operating instructions.
6-wire connection cable: 6x1.0 mm²
Wire no.
1
2
3
green/yellow 4
5
Terminal
U
V
W PE
WSK WSK
7-wire connection cable: 6x1.5 mm²
Wire no.
1
2
3
green/
yellow
4
5
6
Terminal
U V
W PE
WSK WSK not
allocated
