Installation and operating instructions Wilo-Rexa PRO 19
INSTALLATION
US English
Check oil level in sealing chamber
The sealing chamber has a hole for draining and fill
-
ing the chamber.
1.
Position the pump horizontally on a firm surface
with the screw plug facing upward.
Make sure that the pump cannot fall over and/or
slip.
2. Unscrew the screw plug (see Fig. 8).
3.
The oil should reach up to about 0.4 in (1 cm) below
the hole for the screw plug.
4. If there is not enough oil in the sealing chamber, top
it up. To do so, follow the instructions under “Oil
change” in the “Maintenance and repair” section.
5. Clean the screw plug, replace the seal ring if neces-
sary, and screw it back in.
5.3.2. Stationary wet well installation
A guide system must be installed for wet well instal-
lation. This must be ordered from the manufacturer
separately. The pipe system on the pressure side is
connected to this.
The connected pipe system must be self-sup-
porting, i.e. it must not be supported by the guide
system.
The operating space must be laid out so that the
guide system can be installed and operated without
difficulty.
If the motor emerges from immersion during opera-
tion, 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”
Fig. 2.: Wet well installation
1 Guide system
6 Lifting gear
2 Non-return valve
7a Min. water level for im-
mersed operation
3 Gate valve
7b Min. water level for non-
immersed operation*
4 Pipe elbow
8 Impact protection plate
5
Guide pipe
(to be provided by the
customer)
9 Inlet
A Minimum distances in parallel operation
B Minimum distances in alternating operation
Clearance “A”
DN 50
12 in (308 mm)
DN 65
15 in (385 mm)
DN 80
24 in (615 mm)
DN 100
24 in (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. Install 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 instal-
lation 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 opera-
tion, 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”
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.
Содержание Rexa PRO Series
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