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Installation and operating instructions Wilo-Drain MTS 40.../MTS 40E...
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• In the case of a stationary installation, install a non-
return valve and a stop valve with full passage cross-
section in the pressure pipe. These valves are to be
installed above each pump for multiple pumps installa-
tions.
• “Original-Wilo-accessories” are recommended to
guarantee perfect functioning of the pump/system.
7.1.1 Sump installation (Fig 1.)
Sump installation
Choose a suitable location
• Take into account the necessary pit depth H + X:
H: Height of fiberglass sump
X: Sand bed layer, X
min =
8 in (200 mm)
• Take into account the position of the inflow connec-
tion, pressure outlet and ventilation connection.
• Take into account the depth of the inlet connection and
a % fall for the inlet pipe.
Excavate the pit
• Excavate pit with a depth (H + X),
X
min =
8 in (200 mm).
At the floor level, the pit should have a diameter which
is 6.5 ft (2 m) larger than that of the sump. Observe the
applicable regulations for excavation work/civil engi-
neering/construction work (slope angle, pit lining). If
required due to the groundwater level, the pit must be
protected using a groundwater drawdown.
• Make sand bed layer (X; non-cohesive, grain size
0-1½ in (0-32 mm), no sharp-edged parts, minimum
thickness Xmin = 8 in (200 mm)) and compact and level
until a pit depth of (H) is reached.
Insert the fiberglass sump
• Prepare the inflow pipe, ventilation pipe and pressure
outlet pipe on site.
• Insert the fiberglass sump in the pit.
• Align the inlet and pressure outlet connection to the
pipes prepared on site.
• Check the alignment and position of the fiberglass
sump including sump cover in relation to the surround-
ing ground level and adjust if necessary.
• Connect inflow pipe and pressure outlet pipe.
Connect the pipes.
• Connect the inlet pipe to the pit, maintaining a fall in
the direction of the fiberglass sump.
• Connect the pressure pipe to the pressure outlet and
make it frost-proof.
• Install and lay all pipes so that there is no tension.
• Test that it is leakproof, according to the relevant reg-
ulations.
Backfill the pit.
• Backfill the pit in layers (max. layer depth 12 in
(300 mm)) all round with non-cohesive beds of equal
depth (sand/grit without sharp-edged parts, grain size
0-1½ in (0-32 mm)) and seal properly (97% simple
Proctor compaction). Make sure that the fiberglass
sump is vertical and avoid deformation!
During backfilling, ensure that the sump is kept in
position and that it does not swell. If necessary, fill
the sump with water before backfilling and compac-
tion in order to ensure this.
• If the surrounding ground is made up of cohesive mate-
rial, the top layer of the filling can be backfilled with an
approx. 1½ ft (0.5 m) thick layer of this material and
compacted to improve the sump‘s adaptation to the
surroundings.
Install the pump
See point 7.1.2.
Remove coarse contaminants from the fiberglass sump.
NOTE:
The valves should not be connected directly to the
pressure port or the pipe elbow. A device to vent the
pump must be provided. Otherwise the air cushion
cannot open the non-return valve.
WARNING! Risk of injury!
People may fall into the open sump and suffer seri-
ous injury.
• Once the fiberglass sump is installed, always close it
with a WILO sump cover that is suitable for the
application.
• Have a WILO sump cover available when the instal-
lation work starts.
CAUTION! Risk of damage!
Incorrect installation can result in damage to the
product.
• Please ensure that installation work is only carried
out by qualified personnel!
• Install and check the pump station according to the
relevant standards, e.g. DIN EN 1610 (Laying and
checking sewage pipes and drains)!
• Observe national and regional regulations!
• Observe the installation and operating instructions
for accessories!
NOTE:
If outdoor temperatures are persistently cold (below
32 °F (0 °C)), there is a risk of frost in the sump due to
insufficient water exchange, particularly if the sump is
not being used or is only being used occasionally.
• In this case, appropriate insulation measures must be
taken on-site in the area above the pump cover.
• If you do not want to operate the sump at all, we recom-
mend you empty the sump and the pipe fully.
NOTE:
When using this pump, the stud bolts of the pump
(pump feet) must be removed from beneath the pump
housing!
Содержание Drain MTS 40 Series
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