Wilo Drain TS Notice De Montage Et De Mise En Service page 17

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.
NOTE: In order not to damage the float switch
cable when adjusting the level, the clip has to be
released.
If necessary, by pegging the float switch in a
higher position, a drainage level of up to approx-
imately 8 mm (TSW: 18 mm) can be achieved.
To do this, release the float switch clip on the
pump handle.
Raise the float switch in relation to the handle
and, working in the opposite direction, fix the
cable, as close to the switch as possible, on the
handle again with the aid of the clip. The auto-
matic system is then switched off and the pump
runs continuously.
An automatic operation can also be achieved
with the aid of switchgear from the accessories
range.
WILO SE 09/2014
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, which is filled
with medical white oil.
Only specialist companies or Wilo After-sales
Service may open the encapsulated motor.
Cleaning the pump
Depending on the use of the pump, fouling can
occur within the suction strainer and the impeller.
Rinse off he pump under running water after use.
1 Switch off the power supply. Disconnect the
mains plug.
2 Drain the pump
3 The suction strainer is bolted to the pump hous-
ing. Undo the 2 screws on the suction strainer
with a suitable screwdriver and remove the suc-
tion strainer.
4 Clean the suction strainer under running water.
5 Undo the 4 screws on the bottom part of the
pump housing and remove the housing. Handle
the O-ring between the pump housing and motor
housing carefully.
6 Clean the impeller and pump housing under run-
ning water. The impeller must turn freely.
7 Replace damaged or worn parts with original
spares.
8 Re-assembly the pump in the reverse order.
English
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