12.1.
17
Mixers - replaceable RA models
8. Malfunctions
18
8 .
M a l f u n c t i o n s
Fig. 9 Malfunction
Malfunction
Cause
Remedy
No function possible
• Plug connections of the power supply are
loose
• Emergency switch not engaged
• Check and attach the mains plug
• Engage fan hood aperture
Pivoting sash propeller does not
open
• Vanes are deformed
• Vanes are stuck together
• Replace pivoting sash propeller
• Clean carefully
Mixer shaft oscillates very power-
fully
• Pivoting sash propeller does not open
• Bend the shaft
• Motor shaft bearing has been worn down
• Clean carefully or replace the pivoting sash pro-
peller
• Replace the shaft and check the pivoting sash
propeller
• Send the entire mixer to be repaired
Liquid runs out of the leakage
holes onto the flange housing
(mixer connection side)
• Mechanical seal or motor shaft seal has
been damaged
• Send the entire device to be repaired or replace
the spare parts
Liquid runs out of the shaft cou-
pling (coupling piece)
• Agitator shaft seal has been damaged
• Send the entire mixer to be repaired or replace
the spare parts
High noise level
• Bearing of the motor is damaged
• Send the entire mixer to be repaired or replace
the spare parts
ATTENTION
• Do not replace the centred agitator shafts when they are fully operational as they will cause the
shaft to rotate unevenly. This will cause the motor shaft bearings to swing out and destroy the
mechanical seal and the motor shaft seal.
Depending on the extent of the damage, the liquid enters into the motor and may cause a short
circuit.
