MacDon M155 - 5 Maintenance and Servicing; Service Preparation and Access

OPERATION
NOTE:
This procedure can also be used to change the draper speed “on the go”.
CAUTION
Check to be sure all by stan d e rs have cleared the area.
1. Engage header.
2. Set HEADER INDEX switch (B) to OFF.
3. Press DISPLAY SELECTOR button ( E) to show ##.# DRAPER SPEED on the cab display module (CDM) (A).
Displayed value (##.#) = draper speed (mph or km/h
23
).
4. Press FAST (C) or SLOW (D) on the CDM un til desired draper speed is displaye d at (A).
4.6.8 K nife Speed
The ideal cutting speed of the knife should achieve a clean cut. Crop types and conditions usually influence
the knife and forward speeds.
Table 4.2 Knife Speed Table
Header Description
Knife Speed
Minimum Maximum
Type
Size (ft)
rpm
24
spm
25
rpm
24
spm
25
15 750 1500 950 1900
20 and 25 700 1400 850 1700
30 800 1600
Draper with
double knife
35 700 1400
20 and 25 750 1500
30
600 1200
Draper with
single knife
35 550 1100
700 1400
When the header is first attached to the windrower, the windrower control module (WCM) receives a code from the
header that determines the knife speed range and the minimum speed.
Thedesiredspeedcanbeprogrammedonthecabdisplaymodule(CDM)andstoredintheWCMmemorysothe
knife will operate at the original set-point after the header is detached and reattached to the windrower.
If no header code is detected, the CDM displays N O HEADER and the knife speed reverts to the Operator ’s selection
from a range of 800–1000 strokes per minute.
Refer to the header operator’s manual for the suggested knife speed for a variety of crops and conditions.
NOTE:
The knife speed cannot be programmed outside the range specified for each header.
23. Depending on CDM programming.
24. Revolutions per minute is the speed of knife drive box pulley
25. Strokes per minute of knife (rpm x 2)
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