Wilo Rexa PRO Notice De Montage Et De Mise En Service page 17

INSTALLATION
Clearance "A"
DN 50 308 mm
DN 65 385 mm
DN 80 615 mm
DN 100 615 mm
Work steps
1. Installation of the guide system: about 3-6 h
(see the installation and operating instructions for
the guide system).
2. Preparing the pump for operation on a guide sys-
tem: about 1-3 h
(see the installation and operating instructions for
the guide system).
3. Installing the pump: about 3-5 h
• Check that the guide system is firmly fixed and
functions properly.
• Secure the lifting equipment to the pump with
the shackle, lift the pump, and then lower slowly
onto the guide pipes in the operating space.
• Hold the power supply cables slightly taut when
lowering.
• When the pump is connected to the guide
system, ensure that the power supply cables are
secured adequately to prevent them falling down
and or being damaged.
• Have the electrical connections made by a quali-
fied electrician.
• The pressure connection is sealed by its own
weight.
4. Installing optional accessories, such as dry-running
protection or level controls.
5. Starting up the pump: about 2-4 h
• As described in the "Commissioning" section
• For new installation: Flood the operating space
• Vent the pressure pipe.
5.3.3. Portable wet well installation
In this installation type, the pump has to be
equipped with a pump foot (available as an option).
This is attached to the suction port and ensures the
minimum ground clearance and a secure footing
if placed on a solid bearing surface. In this ver-
sion, the pump can be positioned anywhere in the
operating space. If used in an operating space with
a soft bearing surface, a hard base must be used to
prevent sinking. A pressure hose is connected on
the pressure side.
If operated for longer periods of time in this in-
stallation type, the pump must be fastened to the
floor. This prevents vibration and ensures quiet and
low-wearing running.
If the motor emerges from immersion during oper-
ation, the following operating parameters must be
strictly observed:
• The max. fluid temperature and ambient tempera-
ture is 104 °F (40 °C).
• Specifications for "non-immersed operating mode"
Installation and operating instructions Wilo-Rexa PRO
CAUTION: beware of burns!
The housing parts can heat up to well above
104 °F (40 °C). There is a risk of burns! After
switching it off, let the pump cool down to am-
bient temperature.
Fig. 3.: Portable installation
1 Lifting gear
2 Pump foot
Pipe elbow for hose
3 connection or Storz pipe
coupling
4 Storz pipe coupling
Work steps
1. Preparing pumps: about 1 h
• Install the pump foot on the suction connection.
• Install the pipe elbow on the pressure connection.
• Fasten the pressure hose to the pipe elbow with
a hose clip.
Alternatively, a Storz pipe coupling can be
installed on the pipe elbow and a Storz hose cou-
pling can be installed on the pressure hose.
2. Installing the pump: about 1-2 h
• Position pump in installation location. If neces-
sary, secure lifting equipment to the pump with
a shackle, lift the pump, and then lower to the
intended location (sump, pit).
• Check that the pump is vertical and on a solid
bearing surface. Avoid sinking.
• Route the power supply cable so it cannot be
damaged.
• Have the electrical connections made by a quali-
fied electrician.
• Route the pressure hose so that it is not damaged
and fasten it at certain points (e.g. outflow).
DANGER: risk of pressure hose becoming sepa-
rated!
Uncontrolled separation or movement of the
pressure hose can result in injuries. Secure the
pressure hose appropriately. Prevent buckling of
the pressure hose.
3. Starting up the pump: about 1-3 h
• As described in the "Commissioning" section
5.3.4. Stationary dry well installation
In this installation type, the operating space is di-
vided into a collector tank and a machine room. The
fluid is collected in the collector tank and the pump
is installed in the machine room. The operating
space must be prepared according to the manufac-
turer's configuration or planning guide. The pump
US English
5 Storz hose coupling
6 Pressure hose
Min. water level for im-
7a
mersed operation
Min. water level for
7b
non-immersed operation
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