Interroll Drum motor series i, S, S/A, D
Maintenance and cleaning
Version 4.1 (06/2015) en-US 
Translation of original instruction manual
95
Seal type Max. 
temperature
Max. water 
pressure
Comment
NBR IP66 seal
80 °C 50 bar All series for general use
NBR or FPM 
IP66 seal
80 °C 50 bar i-series for wet and foodgrade applications
Relubricating NBR 
IP66 seal
60 °C 50 bar S-series for wet and foodgrade applications
4
  Relubricate motors of the S-series after 
cleaning (See "Relubricating the drum 
motor", page 90).
PTFE IP69K seal
80 °C 80 bar D-series for wet and foodgrade 
applications
 
NOTICE
Risk of damages to the drum motor due to improper cleaning
4
 Never use an acidic cleaner together with a chlorinated cleaner since the resulting 
dangerous chlorine gases can damage stainless steel and rubber components.
4
 Do not apply any acidic cleaners to aluminum or zinc-plated components.
4 Avoid temperatures over 55 °C so that no proteins can be deposited on the surface. Remove 
greases at lower temperatures and with suitable cleaners.
4
 Avoid water pressures over 20 bar so that no aerosols are created.
4 Maintain a distance of 30 cm between the nozzle and the surface to be cleaned.
4 Do not direct the nozzle directly onto the labyrinth and the seals.
4  Wipe off larger, loose contamination.
4  Pre-clean with water (20 bar, 55 °C).
4  Direct the nozzle down onto the surface at an angle of 45°.
4  For a more thorough cleaning, clean seals, grooves and other recesses with a soft brush.
4  In case of heavy contamination, use a soft brush and/or a plastic scraper together with 
spraying water.
4
  Clean for approx. 15 minutes using a cold alkaline or acidic agent.
4  Spray off cleaner with water (20 bar, 55 °C).
4  Disinfect with cold agents for approx. 10 min.
4  Spray off with water (20 bar, 55 °C).
4  After cleaning, check surfaces, grooves and recesses for residues.
For scale deposits, we recommend the use of an acidic cleaner 1 to 4 times per month.
If a cleaning with chlorine is permissible, we recommend alkaline cleaners and disinfectants. In 
this case, the last disinfecting step can be omitted depending on the degree of contamination.
 4 Observe the corresponding certificates at www.interroll.com.
Hygienic cleaning