Instructions
SWITCH BOX DETAIL
DECAL
(12737)
ON/OFF SWITCH (12682)
AUTO FEED
RELAY (12675)
FORWARD &
REVERSE
SWITCH
DISK SENSOR PLACEMENT
GAP
1/32" - 1/16"
SUBJECT: ELECTRONIC FEED
KIT (PN 73071)
FITS MODELS: CH5540H (74554)
INSTALLATION
WARNING
Before inspecting or servicing any part of this machine,
shut off power source, remove key, disconnect the
battery cables and make sure all moving parts have
come to a complete stop.
The electronic feed control kit is used to monitor the speed
of the feed roller to facilitate more efficient chipping.
Figure 1
Inspect kit to verify all items were received.1.
Remove the two washers and nuts from the proximity 2.
sensor of the harness.
Attach proximity sensor to the supplied proximity 3.
sensor bracket (73099-12) by feeding it through the top
hole in the bracket. Replace (on sensor) one nut and
washer removed in step 2. Insert the threaded portion
of proximity sensor through the bottom hole and add the
remaining washer and nut and secure.
Attach bracket to the end of existing bolt on bearing 4.
mount plate with 1/2” washer and nut. See Figure 2 for
mounting location.
Position the proximity sensor within .30" of the rotor 5.
shaft. When proper gap is achieved, tighten bracket in
place. Secure the harness to the top of the proximity
sensor bracket with provided nylon cable tie.
Remove roller cover by loosening and removing the five 6.
3/8” bolts and washers.
Attach LOFA Hydraulic Control (12674) to the holes 7.
drilled in the side of the roller support with iso-mounts
supplied on the control. Secure with four 8/32” locknuts.
See Figure 4 for mounting location detail.
CONTROL BOX PLATE
BEARING MOUNT PLATE
SWITCH MOUNT
WELDMENT
Figure 2
Replace roller cover removed in step 6.8.
Remove the control box plate from the top of the switch 9.
mount box. See Figure 1.
Attach the auto feed control relay to the switch mount 10.
weldment with two 8/32” x 3/4” screws and 8/32”
locknuts. Position the auto feed control relay with the
connectors facing downward. Refer to Figure 1.
Remove the knockout from control box plate.11.
Place the auto feed on/off switch (12682) in the space 12.
vacated by the knockout.
Instruction Sheet
PN 73072-00
Rev.083010
SENSOR ASSEMBLY
BLACK (-)
RED (+)
BLACK
ORG/BLK(REV.)
GRN/BLK(FOR.)
BLACK(-)
BLACK(-)
BLACK
GREEN
WHITE
BLACK
FORWARD
SWITCH
REVERSE
SWITCH
GRN/BLK
ORG/BLK
(N/O)
RED
(COM.)
RED
(COM.)
RED
LOFA
OPTION (+)
FUSE HOLDER
WITH 8 AMP FUSE
RED(+)
BLACK(-)
SPLICE
AT 9.5"
SPLICE
AT 7"
LOFA
OPTION (-)
12646 VALVE,
HYDRAULIC CONTROL
A B
1
3
4
6
7
9
RED
GREEN
WHITE
RED
12682
SWITCH ON/OFF
12675
RELAY CONTROL
GREEN WIRE INCLUDED IN
KIT CONNECT TO (N/O)
GREEN WIRE
INCLUDED IN KIT
DISK SENSOR
12745 HARNESS,
FEED CONTROL
12691 HARNESS,
HYD. FEED PTO
Instruction Sheet
Figure 3
HARNESS HOOKUP
Remove the green/black tracer wire from the forward hydraulic feed switch located in the switch mount box.1.
Connect green/black tracer wire to terminal #7 in the auto feed control relay.2.
Select one switch wire (12695) and connect the appropriate end to terminal #1 in the auto feed control relay.3.
Connect the remaining end of the switch wire (12695) to the spot vacated by the green/black tracer wire in step 1.4.
Pick the other switch wire (12695) and connect the appropriate end to terminal A in the auto feed control relay.5.
Connect the remaining end of the switch wire (12695) to either terminal in the relay 'On/Off' switch.6.
Connect the white wire from the PTO chipper harness to the remaining terminal in the relay bypass switch.7.
Connect the red male bullet connector on the PTO chipper harness to the red female bullet connector lead on the 8.
hydraulic feed switches.
Connect green wire on the PTO chipper harness to terminal B in the auto feed control relay.9.
Replace the control box plate.10.
Attach the auto feed instruction decal to the side of the control box plate.11.
Connect the black male bullet connector on the PTO chipper harness to the existing black female bullet connector on 12.
the feed control harness.
Hook-up the socket connector to the bottom of the LOFA Hydraulic Control.13.
Program the LOFA Hydraulic Control.14.
FEED SENSOR PROGRAMMING INSTRUCTION
Step 1. Initiating Program Mode
Hold down the "S" button while turning the engine key to the "on" position until "L" starts to flash on the LCD.1.
Step 2. Enter Low (L=Low) RPM
The "Low" setting is the RPM speed where the feed roller stops. The "up" arrow increases the RPM setting, while
the "down" arrow decreases the RPM setting. Setting the speed lower causes the engine to lug down more before
the feed roller stops.
Hold the appropriate (either up or down) arrow until the desired speed of 1400 RPM is displayed.1.
Push the "S" button once with the desired RPM setting displayed to save.2.
NOTE: DO NOT choose a setting equal to or below zero.
Step 3. Enter Normal (N=Normal) RPM
The "Normal" setting is the RPM speed the chipper rotor usually turns.
Hold the appropriate (either up or down) arrow until the desired speed of 1675 RPM is displayed.1.
Push the "S" button once with the desired RPM setting displayed to save.2.
Step 4. Enter High (H=High) RPM
The "High" setting is not needed with this application.
Set to zero (00) to deactivate.1.
Push the "S" button once with zero displayed to save.2.
Step 5. Enter Return (rEt=Return) RPM
The "Return" setting is the RPM speed where the feed roller restarts. The feed roller should restart before the rotor
reaches "Normal" RPM to maximize chipper efficiency.
Setting the speed higher allows the engine to recover more before the feed roller restarts.
Hold the appropriate (either up or down) arrow until the desired speed of 1425 RPM is displayed.1.
Push the "S" button once with the desired RPM setting displayed to save.2.
Step 6. Enter Number of Poles (IPU=Number of Poles)
The number of "Poles" is used to indicate the number of speed pickup devices.
Hold the appropriate (either up or down) arrow until one (1) is displayed.1.
Push the "S" button one with one (1) displayed to save.2.
Instruction Sheet
LOFA CONTROL (12674)
HARNESS, PTO
CHIPPER (12691)
DRILL HOLE
TO GROUND
LOFA
Figure 4
PARTS LIST, KIT# 73071
PART NUMBER DESCRIPTION QTY.
12674 CONTROL, LOFA (SPEED) 1
12675 RELAY, CONTROL 1
12682 SWITCH, OFF/ON 1
12691 HARNESS, HYD FEED PTO 1
12695 WIRE, SWITCH 2
12737 DECAL, AUTO FEED 1
15049 NUT, 1/2 CENTERLOCK GR8 ZP 1
15209 WASHER, #8 SAE 4
15255 NUT, #8X32 NYLOCK 2
15550 SCW 8X32X3/4 PAN PHP ZP 2
15640 NUT, M4-0.7 ZP HEX 4
17320 STRAP, NYLON TIE 1
73072 INSTRUCTIONS, ELECTRONIC FEED KIT 73071 1
73099-12 BRACKET, PROXIMITY SENSOR 1
ELECTRONIC FEED PARTS LIST (PN 73071)
ECHO BEAR CAT
www.bearcatproducts.com
237 NW 12th Street, West Fargo, ND 58078-0849
Phone: 701.282.5520 • Toll Free: 800.247.7335 • Fax: 701.282.9522
E-mail: service@bearcatproducts.com • sales@bearcatproducts.com
Instruction Sheet
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