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12
Installation and operating instructions • Wilo-Rexa FIT-S • Ed.01/2022-03
1
5
6
3
4
2
OFF!
S1
S2, S3
Fig. 4:
Wet well installation, stationary
1
Suspension unit
2
Non-return valve
3
Stop valve
4
Guide pipes (provided by the customer)
5
Lifting equipment
6
Attachment point for lifting equipment
✓
Place of use prepared.
✓
Suspension unit installed.
✓
Coupling connection mounted on the pump.
1.
Use a shackle to attach the lifting equipment to the attach-
ment point on the pump.
2.
Lift the pump and swing it over the opening of the pump
chamber.
3.
Slowly drain the pump and thread the guide pipes into the
coupling connection.
4.
Lower the pump until it sets on the suspension unit and is
connected automatically.
CAUTION! Hold the connection
cables slightly taut when lowering the pump!
5.
Loosen the lifting gear from the lifting equipment and secure
it against falling at the pump chamber outlet.
6.
Correctly route the connection cables and lead them out of
the pump chamber.
CAUTION! Do not damage the connec-
tion cables!
- No chafing or kinking.
- Do not immerse the cable end in the fluid.
- Observe the bending radii.
▶
Pump installed, make the electrical connection.
6.4.4
Portable wet well installation
Attach the pump support foot (available separately as an access-
ory) to the pump. The pump support foot allows the pump to be
positioned anywhere at the place of use. A pressure hose is con-
nected on the discharge side.
•
Use a hard surface or underlay at the place of use to prevent
sinking on a soft bearing surface.
•
If the pump is used at the same location for a longer period of
time, bolt the pump support foot to the floor. This reduces vi-
brations and enables quiet operation.
1
6
5
3
4
2
OFF!
S1
S2, S3
Fig. 5:
Portable wet well installation
1
Pump support foot
2
Pipe elbow with hose connection or Storz fixed coupling
3
Storz hose coupling
4
Pressure hose
5
Lifting equipment
6
Attachment point
✓
Place of use prepared.
✓
Pump support foot mounted.
✓
Discharge connection prepared: Hose connection or Storz
coupling fitted.
✓
Soft bearing surface: solid surface available.
1.
Use a shackle to attach the lifting equipment to the attach-
ment point on the pump.
2.
Lift and align the pump at the installation location.
3.
Place the pump on a firm bearing surface. Avoid sinking!
4.
Secure the pump against moving and falling over: Bolt the
pump support foot to the floor.
5.
Lay the pressure hose and fasten it properly at the appropriate
place (e.g. drainage).
6.
Correctly route the connection cables.
CAUTION! Do not
damage the connection cables!
- No chafing or kinking.
- Do not immerse the cable end in the fluid.
- Observe the bending radii.
▶
Pump installed, make the electrical connection.
6.4.5
Level control
The “A” version is equipped with a float switch. The pump is
switched on and off depending on the fill level. The switching level
is determined by the cable length of the float switch.
Observe the following points during installation:
•
Float switch must be able to move freely!
•
The minimum permissible water level is
not fallen short of
!
•
The maximum switching frequency is
not exceeded
!
In order to achieve larger switching differences in case of
strongly fluctuating fill levels, provide a level control with two
measuring points.
