Wilo -Drain TM 32 Einbau- Und Betriebsanleitung Seite 26

English
On version TMR, to reach the maximum low suc-
tion level, the float switch must be manually lifted.
A small degree of water evacuation (lateral slit
between suction strainer and housing) when level
"h2" is reached is normal and necessary to ensure
the operational safety of the pump.
• 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 quantity of water feeding into
the shaft may not exceed the pump's capacity.
Monitor the sump during commissioning.
• To increase the required capacity (by approx.16%
of the delivery head) the whirl system device of
the TMW pump can be shut down as follows
(fig. 3):
- Pull the mains plug
- Remove pump from the sump,
- Remove the 4 screws (pos. 2) below the suc-
tion basket,
- Remove the whirl device (pos. 1), rotate by
180° and secure again with the 4 screws,
- Lower pump again and start up.
9. Maintenance
Maintenance and repairs may only be carried out
by qualified experts!
DANGER! Risk of fatal injury!
There is a mortal danger through shock when
working on electrical equipment.
• Before any maintenance and repair work,
the pump must be switched off and prevented
from being switched on again in an unauthor-
ised manner.
• Damage to the connecting cable may only be
repaired by a qualified electrical contractor in
principle.
• When checking the function following long
downtimes, avoid contact with the fluid.
In order to prevent blockage of the pump result-
ing from long downtimes, its ability to function
should be checked at regular intervals (every 2
months) by manual raising of the float switch
or direct switching-on and brief start-up of the
pump.
Minor wear of the rotary shaft seal and mechani-
cal seal can lead to fouling of the liquid following
an oil leak from the oil chamber.
The pump should therefore be serviced after
approx. 2,000 operating hours by a specialist or
Wilo After-sales Service, mainly in order to check
the seals.
Only specialist companies or Wilo After-sales
Service may open the encapsulated motor.
26
Cleaning the pump
Depending on the use of the pump, fouling can
occur within the suction strainer and the impel-
ler. Rinse off he pump under running water after
use.
1 - Switch off the power supply. Disconnect the
mains plug!
2 - Drain the pump
TMW
3 - The whirl device is screwed to the suction
strainer (Fig. 3).
• Loosen 4 screws (∅3.5 x 14),
• Remove whirl device,
4 - The suction strainer is screwed to the pump
housing,
• Loosen 4 screws (∅4 x 60),
• Remove suction strainer, handle O-ring (∅155
x 2) between suction strainer / pump housing
and O-ring (∅14 x 2) in the bypass hole (neces-
sary for the whirl function) with care.
TM/TMR
4 - The suction strainer is screwed to the pump
housing,
• Loosen 4 screws (∅4 x 60),
• Remove suction strainer, handle O-ring (∅155
x 2) between suction strainer / pump housing
with care.
5 - Clean the impeller and pump housing under
running water. The impeller must turn freely.
6 - Replace damaged or worn parts with original
spares.
7 - Re-assembly the pump in the reverse order.
WILO SE 08/2018