Faults, Causes And Remedies - Wilo Vardo WEEDLESS-F Notice De Montage Et De Mise En Service

en
1 2
6 5
Fig. 15: Removing the mixer shaft
1 2
6
Fig. 16: Mounting the mixer shaft
10

Faults, causes and remedies

260
Faults, causes and remedies
Removing the mixer shaft from the drive unit
1 4
1 Mixer shaft
2 Shrink disc
3 Output shaft
4 Drive unit
5 Grub screw
6 Hexagon head screw
‡
Propeller blades are removed. See "Attaching the propeller blades [} 243]".
‡
Cover cap is removed. See "Mounting the cover cap [} 245]".
‡
Align mixer shaft and drive unit horizontally: Position scantlings under the mixer
shaft and drive unit. WARNING! Risk of crushing! Prop up the mixer and drive
unit in such a way that they will not tip over when dismantled!
1. Unscrew the grub screw.
2. Loosen the hexagon head screws on the shrink disc.
3. Remove the mixer shaft from the output shaft.
4. Remove the shrink disc from the mixer shaft.
Mounting the mixer shaft on the drive unit
1. Place the shrink disc on the upper end (tapered end) of the mixer shaft and slide up
3 4
as far as it will go.
2. Place the mixer shaft on the output shaft and slide up as far as it will go.
3. Turn the mixer shaft until the grub screw's take-up opening is exactly above the
groove on the output shaft.
4. Screw in the grub screw until hand-tight.
5. Tighten the shrink disc's hexagon head screws in a crosswise manner until hand-
tight.
6. Tighten hexagon head screws crosswise. For torque, see "Shrink disc tightening
torques [} 262]".
7. Ensure that the mixer shaft is securely attached.
▶ Drive unit is replaced. Install the mixer and put into service.
DANGER
Danger from fluids hazardous to health!
Risk of fatal injury in the case of mixers working in fluids hazardous to health! Wear
the following protective equipment while performing the work:
• Closed safety goggles
• Breathing mask
• Protective gloves
⇒ The equipment listed here is the minimum requirement; observe the spe-
cifications of work regulations! The operator must make sure that person-
nel have received and read work regulations!
DANGER
Risk of death due to electrocution!
Improper conduct when carrying out electrical work can lead to death due to electric
shock! Electrical work must be carried out by a qualified electrician in accordance
with the locally applicable regulations.
WILO GVA GmbH 2019-02