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Faults, causes and remedies
36
WILO GVA GmbH 2019-02
Mounting the mixer shaft on the drive unit
1
2
3
4
6
Fig. 16: Mounting the mixer shaft
1. Place the shrink disc on the upper end (tapered end) of the mixer shaft and slide up
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 [
}
38]”.
7. Ensure that the mixer shaft is securely attached.
▶ Drive unit is replaced. Install the mixer and put into service.
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Faults, causes and remedies
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.
DANGER
Risk of fatal injury due to dangerous lone working practices!
Work in chambers and narrow rooms as well as work involving risk of falling are dan-
gerous work. Such work may not be carried out autonomously! A second person
must be present for safety reasons.
WARNING
No persons may remain in the working area of the mixer!
Persons can suffer (serious) injury while the mixer is in operation! No persons may
therefore be present inside the working area. If persons should enter the mixer’s
working area, deactivate the mixer and safeguard it against being switched on again
by unauthorised persons!
WARNING
The propeller blade has sharp edges!
Sharp edges can form on the propeller blades. There is a risk of limbs being severed.
Wear safety gloves to protect against cuts.
