Setting Relay Logic Switch - MacDon R1 FR Series Operator's Manual

5. Ensure that upper proximity sensor (B) (inset) is within 1 3
mm (1/32 1/8 in.) of top link (A) when the 3-point hitch is
fully raised.
NOTE:
Auxiliary lift cylinders (C) should be fully extended and to
assist the 3 point hitch by lifting the header with lift
linkage (D).
6. On the left side of the carrier frame, ensure upper and
lower sensors (A) are within 1 3 mm (1/32 1/8 in.) of
inboard lift linkage (B).

4.7.4 Setting Relay Logic Switch

The R1 FR s hydraulic lift assist system uses sensors and electronics for automatic control. The electronic relay logic
assembly has three setting options.
The relay logic assembly is located on the left side of the carrier
frame at the back of the header. Switch (A) on the bottom of
the cover has three positions. Select the position that suits your
application:
Automatic (right): select the automatic setting when
operating in normal conditions. The auxiliary lift cylinders
will extend or retract according to feedback from the
position sensors.
Off (center): select this mode to turn the lift assist system
off when servicing, transporting, or storing the header.
Manual (left): select this mode to use the tractor s front
hydraulic circuit controls to manually extend or retract the
auxiliary lift cylinders.
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MAINTENANCE AND SERVICING
Figure 4.222: R1 FR – Fully Raised Position
B
Figure 4.223: Carrier Frame – Left Auxiliary Lift
Linkage
Figure 4.224: Relay Logic Assembly
201
B
D
A
B
A
A
C
A
Revision A