Sterling 238 User Manual

Page of 43
Powder Hopper Loaders 
Page 33 
 
6 Maintenance 
6-1 Routine 
Maintenance 
Cleaning Filters 
Check the condition of the filter assembly frequently until you can 
determine a filter-cleaning interval. Units conveying dusty or fine 
materials need more frequent cleaning. Note that a clogged filter 
can reduce the overall capacity of the loader.  
 
Replace the filter bags if they show any signs of wear. You can 
obtain replacements from the manufacturer. 
 
To gain access to the filter, release the cover latches and lift the 
hopper/lid assembly off, grasping the lip of the filter assembly and 
remove. 
 
 
 
CAUTION
Do not lift the cover assembly by the motor, piping, or 
accumulator. 
 
These components are not designed to support the 
assembly.
 
 
 
Checking Flex Hose for Wear 
Worn hoses can cause leaks and reduce conveying rates. Check the 
hose regularly. 
 
 
Inspect Material Discharge Valves 
Look for signs of wear, improper operation, or material 
obstruction. Make sure that the flapper discharge valve is secure 
and free from all obstructions. 
 
Note:  Powder hopper loaders that convey very abrasive and/or 
very dusty materials may require more frequent 
maintenance.