
en
10 Installation and operating instructions • Wilo-Drain TM/TMW/TMR 32 • Ed.10/2023-04
•An energy-saving plug is in use
This reduces the energy supply to the pump and the pump may
heat up too much.
•Operation on start-up controls
The pump is not suitable for operation on a frequency converter
or a soft start control.
•Explosive atmospheres
Do not connect and operate the pump inside potentially ex-
plosive atmospheres!
5.3.1 Connection: Pump with plug
Provide for a socket (typeE or typeF) with earthing contact. To
connect the pump, insert the plug into the socket.
NOTICE
Pump starts up or is ready for operation!
Once the plug is connected to the socket, the pump
will either start immediately or be ready for opera-
tion:
• Pump without float switch: pump switches on
immediately!
• Pump with float switch: pump is ready for oper-
ation and will switch on depending on the fill
level!
▶We recommend switching the socket on and
off using a separate main switch!
5.3.2 Connection: Pump without a plug
DANGER
Risk of fatal injury due to electrical current!
Improper conduct when carrying out electrical work
can lead to death due to electric shock!
• Electrical work must be carried out by a qualified
electrician!
• Observe local regulations!
CAUTION
Irreparable damage as a result of water pen-
etration
Connection cables without plugs feature bare cable
ends. Water may penetrate the connection cable
and pump via these bare cable ends. This will des-
troy both the connection cable and the pump. Never
immerse the bare end of the connection cable in
fluid. Firmly seal it during storage.
If the pump is to be connected to a switchgear, cut off the plug.
Carry out connection to a switchgear as follows:
Wire colour Terminal in switchgear
Brown (bn) L (phase)
Blue (bl) N (neutral conductor)
Green/yellow (gn-ye) Earth (protective earth con-
ductor)
Adjust the motor protection
Set the motor protection switch to the rated current (see rating
plate).
6 Commissioning
DANGER
Risk of fatal injury due to electrical currents
in accessible basins!
Do not operate the pump if there are persons in
contact with the fluid. In the event of a fault this
may cause death by electric shock! Only activate the
pump when there are no longer any persons in con-
tact with the fluid.
NOTICE
Check the inlet quantity!
The maximum inlet volume flow must be less than
the maximum pump delivery rate. If the inlet quant-
ity is higher, the pump will not be able to pump
away the volume flow. The pump chamber may
overflow!
6.1 Before activating
Check the following prior to activation:
•Has the electrical connection been carried out in accordance
with regulations?
•Has the connection cable been routed safely?
•Can the float switch move freely?
•Temperature of the pumped fluid observed?
•Immersion depth observed?
•Are the pressure pipe and pump sump free of deposits?
•All gate valves in the pressure pipe open?
6.2 Switching on and off
The pump is switched on and off depending on the version:
•Pump with plug, without float switch
The pump will switch on immediately after the plug has been
inserted into the socket. To switch off the pump, pull the plug.
•Pump with plug and float switch
The pump will switch on and off automatically on reaching the
switching level:
–Upper floater: Pump on.
–Lower floater: Pump off.
6.3 Test run
If the pump is installed stationary (e.g. cesspool, overflow shaft),
carry out a test run. Check the following points with the test run:
•General conditions (inflow quantity, switching points)
•Direction of rotation (with 3~ motors)
The test run must include three pump cycles.
1. Flood the pump chamber: Open inlet.
NOTICE!The required feed quantity for the test run can also
be simulated using another water source.
2. When the switch-on level is reached: pump starts.
3. Switch-off level reached: pump stops.