Sampo Rosenlew Comia c4, Instruction Book

Page: 83 / 141

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If the sample is not clean, the reason could be:
Insuf ¿ cient fan speed
Incorrect direction of fans
Grain sieve holes too large for crop
Chaffer sieve set too wide open
Forward speed too low
insuf ¿ cient load on the threshing mechanism
Crop sparse in places and weedy
Cylinder-concave clearance too small
Too many breaks in threshing
turning, etc.
Malfunction Problems
The cylinder winds up and gets clogged:
Crop damp or green
Forward speed too high
Cylinder-concave clearance too wide
Cylinder speed too low
Cylinder bars damaged or worn
Rear beater damaged
The grain auger gets clogged:
Chaffer sieve set too wide open
Insuf
¿ cient fan speed
The return auger gets clogged:
Grain sieve holes too small
Grain sieve blocked
Insuf
¿ cient fan speed
Chaffer sieve set too wide open
Cleaning Instructions When Going From One Crop To Another
Drive the combine on level ground. Change the gear into neutral and lock the
parking brake. Remove the ignition key whenever the engine is switched off to ascertain
that no outsiders can start the combine. Do not implement any cleaning operations with the engine
running!
Cleaning with compressed air is recommended. An appropriate brush may also be used.
Support the reel and the cutting table in their top positions.
Open the stone trap and empty it with a cassette key, for instance.
Open all cleaning doors
not those to the grain tank .
Remove and clean all sieves.
Clean the supporting grooves of the sieves in the shaker shoe.
Lock the back door in the shaker shoe.
Remove and clean the bottom grooves in the straw walkers.
Run the threshing mechanism for 2-3 min. with the cleaning fan at maximum speed and push the direction lever
to and fro.
Lift and lower the cutting table, but do not start it. Leave the table in its bottom position.
Stop the threshing mechanism.
Check that the grain pan is empty. If necessary, remove and clean the cassettes.
Check the spaces between the return and grain augers and remove any remaining grain.
Shake the chain of the feeding elevator to make the grains run down. Clean the elevator inside and out.
Clean the cutting table.
Remove the bottom augers of the grain tank and the part of the unloading pipe in the grain tank.
Brush the bottom furrows, discharging the grains through the bottom door.
Clean the unloading pipe by turning the auger manually counter-clockwise with the pipe being raised half way
up to make the grains run out through the bottom door.
After cleaning, re
¿ t the parts and close the doors.