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2.4 Inspecting and adjusting the impeller clearance
DANGER
Electric shock
Death or serious personal injury
- Before inspection, make sure that the motor is
switched off and that the main switch is locked in
position 0.
Check the impeller clearance every time service is
FM
carried out to prevent hot surfaces in the hydraulic
parts.
Pressure range
E = Extra low pressure
L = Low pressure
M = Medium pressure
H = High pressure
S = Super high pressure
You can inspect the impeller clearance of installation types S and
C directly through the pump inlet.
You can inspect and adjust the installation types D and H with the
pump installed on the base stand and connected to the pipes.
2.4.1 Adjusting the impeller clearance
1. Loosen the set screws by two full turns each.
2. Close the impeller clearance by lightly tightening the fastening
screws diagonally until the impeller touches the pump
housing.
Do not use too much force when tightening the
fastening screws as this may damage the bearings.
3. Loosen the fastening screws to make the correct gap under
the heads of the fastening screws. See fig. 6.
Use the clearance stated in the impeller clearance
table above.
4. Tighten the set screws tightly. For more information about
torques, see section
7.4 Tightening torques and
5. Tighten the fastening screws diagonally.
Set screw
Fastening screw
Impeller clearance adjustment
Fig. 6
6
Impeller clearance X
[in (mm)]
0.028 ± 0.004 (0.7 ± 0.1)
0.028 ± 0.004 (0.7 ± 0.1)
0.023 ± 0.004 (0.6 ± 0.1)
0.023 ± 0.004 (0.6 ± 0.1)
0.019 ± 0.004 (0.5 ± 0.1)
lubricants.
X inch (mm)
Fastening screw
3. Preparing the dismantling of the product
3.1 Transporting the product
You can transport the pump in vertical or horizontal position.
Make sure that the pump cannot roll or fall over.
See the installation and operating instructions for SE, SL 12-42
Hp (9-30 kW). Use the QR code and link on the front page of this
document.
3.2 Handling and storing the product
3.2.1 Contaminated products
CAUTION
Biological hazard
Minor or moderate personal injury
- Flush the product thoroughly with clean water and
rinse the product parts in water after dismantling.
3.2.2 Lifting the product
Make sure that all lifting equipment is rated for the
purpose.
Check the lifting equipment for damage before
attempting to lift the product.
DANGER
Crushing hazard
Death or serious personal injury
- Make sure that the shackles are tightened before
attempting to lift the product. Tighten if necessary.
DANGER
Crushing hazard
Death or serious personal injury
- Always lift the product by its lifting bracket or by
means of a forklift truck if the product is fixed on a
pallet.
Do not lift the product by the power cable.
It may result in electric short circuit and risk of chock
when the product is connected to the mains. The
cable and cable entry may be damaged, leading to
loss of watertightness and consequent severe
damage to the motor.
The product weighs between 639 and 1521 lb (290 and 690 kg)
without accessories. It is therefore very important to use the
correct lifting equipment. The product weight is stated on the
pump nameplate.
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