Wilo TM 32/7, Installation And Operating Instructions Manual

Page: 25 / 96

25 WILO SE 08/2018
EN
English
The diameter of the pressure pipe (pipe/hose
connection) should not be smaller than the
pressure connection of the pipe because of the
increased risk of clogging and greater pressure
losses. To avoid pressure losses, it is recom-
mended that the pipe connection one number
higher is selected.
Stationary wet sump installation
In the case of a stationary wet sump installation of
the pump with a permanent pressure pipe, the pump
must be positioned and secured so that.
• The pressure pipe connection does not support
the weight of the pump.
• The load of the pressure pipe does not act on the
connecting socket.
• The pump is installed stress-free.
To protect against any backflow from the public
drainage pipe, the pressure pipe must be taken in
an arc over the locally established backflow level
(usually street level). A non-return valve does not
represent a guaranteed backflow seal.
• The attached non-return valve should be
installed if the pump is installed permanently.
• Seal the pipe connections to the pressure port
with Teflon tape.
NOTE: Permanent leakage in this area can lead to
destruction of the non-return valve and of the
screwed connection.
Transportable wet sump installation
In the case of a transportable wet sump installa- tion
with hose connection, the pump must be secured in
the shaft to prevent it from falling over and wander-
ing (e.g. secure chain / rope with slight pre-tension).
NOTE: When used in a sump 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 electric shock.
Only allow the electrical connection to be made
by an electrician approved by the local electric-
ity supplier and in accordance with the local reg-
ulations in force.
• The type of mains connection current and volt-
age must correspond to the details on the name
plate,
• Fuse in the power supply: 10 A, slow,
• Earth the installation according to the regula-
tions,
• The installation of a leakage current protection
switch to be provided on site for a trip current of
30 mA is recommended (caution when installing
outside).
• The pump is ready to connect.
To connect the pump to the switchgear, the
shock-proof plug is disconnected and the con-
necting cable is then connected as follows (see
Installation and operating instructions for the
switchgear):
3-wire connection cable: 3 x 1,0 mm²
Socket and switchgear must be installed in a dry
room and protected against flooding.
8. Commissioning
DANGER! Danger through electric shock!
The pump may not be used to drain swimming
pools / garden ponds or similar place if anyone is
in the water.
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 .
• When filling the shaft or lowering the pump
into the pit, make sure that the float switches
can move freely. The switch must switch off the
pump before the intake openings of the pump
can draw in air.
• After filling the shaft and opening the check
valve on the pressure side (if provided), the pump
starts up automatically when the switch-on level
“h” is reached and switches off as soon as the
switch-off level “h1” responds.
• Do not direct the jet of water to be fed into
the shaft at the suction strainer of the pump.
Entrained air can prevent the operating pump
from functioning if the vent slit in the housing is
blocked.
• The maximum volume of water entering the
shaft must not exceed the performance of the
pump. Keep an eye on the shaft when commis-
sioning the pump.
NOTE: The venting of the pump when commis-
sioned for the first time will be improved by sub-
mersion in the fluid at an angle or by positioning
it at a slight angle.
Adjusting the switching level of the float
switch
The perfect functioning of the level control sys- tem
is guaranteed if the details according to the table in
7.1 and Fig. 2 are observed.
The switching level (switch-on/off point) can be
changed via the free float switch cable by moving
the cable within the clip on the pump handle. The
level “h2 min” must be respected (see Fig. 2).
Pump H
min
B
min
L D
(mm)
TM 32/7 280 350 x 350 294 165
TM 32/8 280 350 x 350 293 165
TM 32/11 280 350 x 350 323 165
Pump h
max
h1
min
h2
min
(mm)
TM 32/7 237 50 14
TM 32/8 250 50 14
TM 32/11 280 50 14
Conductor Terminal
brown L1
blue N
green/yellow PE