Wilo Rexa CUT GE Series - 10 Faults, Causes and Remedies

Faults, causes and remedies en
Installation and operating instructions Wilo-Rexa CUT GE 33
▪Size 5 Allen key
▪Suitable equipment for fixing the rotating blade in place
Work steps
12
3
5
4
Fig.11: Setting the blade gap
1 Blade
2 Cutting plate
3 Shims
4 Fastening screw
5 Impeller
‡ Protective equipment has been fastened on
‡ Pump cleaned and disinfected if necessary
‡ The required tools are ready for use
1. Fix the rotating blade in place with suitable equipment.
2. Unscrew the blade fastening screw. WARNING!Danger of cutting injuries! The
blade has sharp edges. Wear suitable protective gloves.
3. Remove the blade.
4. Set a gap of 0.1 to 0.2mm (0.004...0.008in) by removing or replacing shims. At-
tention: NOTICE!The blade must not grind against the cutting plate.
5. Attach the blade again.
6. Screw in the fastening screw. Max. tightening torque: 37Nm (27 ft·lb)
7. Measure the gap and repeat the work steps if necessary.
10 Faults, causes and remedies
DANGER
Danger due to fluids hazardous to health!
Danger of death in case of pumps with fluids hazardous to health! Wear the follow-
ing 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 the work regulations! The operator must make sure that the
personnel have received and read the 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.