User manual

106
Version 2.4 (10/2011) en
Original instructions
Drum Motor
Maintenance and cleaning
Cleaning
¾ Remove foreign material from the drum.
¾ Do not use sharp-edged tools to clean the drum.
Cleaning the Drum Motor with
a high pressure washer
Only stainless steel or rust free Drum Motors with IP66 or IP69k sealing can be
cleaned with high-pressure washer.
Before cleaning with high-pressure, note the following:
• The distance between the high-pressure nozzle and the Drum Motor must be
at least 30 cm.
• The maximum pressure that should be used is shown in the table below.
• High pressure washing should be carried out whilst the Drum Motor is running
to prevent the possibility of ingress of water or damage to the seals.
The maximum cleaning temperature and pressure depends on the type of seal.
Hint
Material build up on the drum motor or on the underside of the belt will cause belt
misalignment and possibly belt damage. Material build up between the belt and
slide bed plate or rollers may also cause belt speed reduction and increase the
power requirement. Periodic cleaning will ensure a high drive efficiency and good
belt alignment.
Failure of seal due to high pressure
¾ Do not hold the nozzle in one position on the shaft seal
in order to wash out the labyrinth or seal.
¾ Move the nozzle constantly equally over the complete
Drum Motor.
Type of sealing Max.
temperature
Max. water
pressure
Remark
NBR IP66
sealing
80 °C 50 bar all series for general use
FPM IP66 Viton
sealing
80 °C 50 bar For i-series wet and food
applications
Re-greasable
NBR IP66
sealing
60 °C 50 bar For S- and E-series wet
and food applications
PTFE IP69K
sealing
80 °C 80 bar For SN-series wet and food
applications