Norac UC4+ User manual

JOHN DEERE 4920
Installation Manual
Spray Height Controller
Improving the competitiveness of Industry and
Agriculture through Precision Measurement

Printed in Canada
Copyright ©2005-08 by NORAC Systems International Inc.
Reorder P/N: UC4+BC+JD6-INST Rev A (JOHN DEERE 4920)
NORAC Systems International Inc. reserves the right to improve products and their specifications without notice and without the
requirement to update products sold previously. Every effort has been made to ensure the accuracy of the information contained
in this manual. The technical information in this manual was reviewed at the time of approval for publication.

TABLE OF CONTENTS
1INTRODUCTION .................................................................................................................................. 1
2GENERAL SYSTEM DESCRIPTION .................................................................................................. 2
3PARTS LISTS ...................................................................................................................................... 3
4INSTALLATION PROCEDURE ........................................................................................................... 7
4.1 EXISTING SYSTEM CHECK ............................................................................................................... 7
4.2 BOOM SPEED TEST........................................................................................................................ 7
4.3 WING SENSOR INSTALLATION......................................................................................................... 9
4.4 MAIN LIFT SENSOR INSTALLATION ................................................................................................ 12
4.5 ROLL SENSOR INSTALLATION....................................................................................................... 13
4.5.1 Boom Roll Sensor Mounting.................................................................................................. 14
4.5.2 Chassis Roll Sensor Mounting .............................................................................................. 15
4.5.3 Inverted Roll Sensor Mounting .............................................................................................. 16
4.5.4 Temperature probe................................................................................................................ 16
4.6 HYDRAULIC INSTALLATION ........................................................................................................... 17
4.6.1 Valve Assembly ..................................................................................................................... 17
4.6.2 Valve Mounting...................................................................................................................... 18
4.6.3 Hydraulic Plumbing ............................................................................................................... 19
4.7 ELECTRICAL INSTALLATION .......................................................................................................... 21
4.8 COMPLETING THE INSTALLATION .................................................................................................. 26
5ELECTRICAL REFERENCE – CABLE DRAWINGS........................................................................ 27
5.1 ITEM C1: 44662B –SENSOR TRUNK CABLE................................................................................. 27
5.2 ITEM C02: 44668 –SENSOR BRANCH CABLE ............................................................................... 27
5.3 ITEM C02B: 44664 –CABLE UC4 CAN NODE DUAL.................................................................... 28
5.4 ITEM C03: 44656 –VALVE CABLE (VARIABLE RATE).................................................................... 28
5.5 ITEM C4: 44651 –VALVE EXTENSION CABLE ............................................................................... 29
5.6 ITEM C10: 44650-14 –POWER CABLE UC3 BOOM CONTROL JOHN DEERE .................................. 29
5.7 ITEM C12: 44658-10 –CABLE VALVE UC3 BC JD 4920.............................................................. 30

1
1 INTRODUCTION
Congratulations on your purchase of the NORAC UC4+ Spray Height Controller. This system is
manufactured with top quality components and is engineered using the latest technology to
provide operating features and reliability unmatched for years to come.
When properly used the system can provide protection from sprayer boom damage, improve
sprayer efficiency, and ensure chemicals are applied correctly.
Please take the time to read this manual completely before attempting to install the system. A
thorough understanding of this manual will ensure that you receive the maximum benefit from
the system.
YOUR INPUT CAN HELP MAKE US BETTER! If you find issues or have suggestions
regarding the parts list or the installation procedure, please don’t hesitate to contact us via
the information given below:
Phone: [phone] Canada (Toll Free)
1-866-306-6722 United States (Toll Free)
0-800-404-8389 United Kingdom (Toll Free)
1-306-664-6711 all other regions
E-mail: [email protected]
Website: www.norac.ca

2
2 GENERAL SYSTEM DESCRIPTION
Figure 1 depicts the general system layout of the UC4+ Spray Height Controller system.
Figure 1 – System Components and General Location
NOTICE:
Every effort has been made to ensure the
accuracy of the information contained in this
manual. All parts supplied are selected
specially to fit the sprayer to facilitate a
complete installation. However, NORAC
cannot guarantee all parts fit as intended due
to the variations of the sprayer by the
manufacturer. Please read this manual in
its entirety before attempting installation.
ATTENTION:
When installing the UC4+ System please be
aware that at a point in the installation your
sprayer booms will be inoperative until the
installation is complete. Any installation
procedure requiring boom movement will
need to be done first. Once the hydraulics
have been disconnected you must complete
the electrical installation before the booms
become operative.

3
3 PARTS LISTS
The parts that come with your UC4+ Spray Height Controller are listed in Table 1. The item number on
the left side of this table references each part.
Please ensure that all parts in your kit are present before proceeding with your installation.
Table 1 – JOHN DEERE 4920 Spray Height Controller System Parts (Rev A)
Item Part Number Name Quantity
B05 44706-01 KIT CABLE TIE BLACK 10 PCS 21 IN 150 PCS 7.5 IN 1
B10 44700-06 BRACKET VALVE MOUNTING STD 1
B11 44743 MOUNTING BRACKET MAIN LIFT SENSOR UC4 PLUS 1
B13 44728 MOUNTING BRACKET COMPLETE UC4 BREAKAWAY EXTENDED 2
B15 105415 CLAMP EXHAUST 2IN PLATED 4
B16 105416 CLAMP EXHAUST 1-1/4 IN PLATED 4
C01 44662B-40 CABLE UC3 SENSOR TRUNK AMPF TO AMPF BLACK STANDARD 40FEET 1
C02 44668 CABLE UC3 SENSOR BRANCH 1 AMP RECEPT 3 AMP PLUG BC 1
C02A 44664 CABLE UC4 CAN NODE DUAL 1
C03 44656 CABLE VALVE VARIABLE RATE 1
C04 44651 CABLE VALVE EXTENSION 1
C10 44650-14 CABLE POWER UC3 BOOM CONTROL JOHN DEERE 1
C12 44658-10 CABLE UC3 VALVE BC JD4920 1
E01 4461BC+ UC4 PLUS BOOM CONTROL PANEL 1
E02 44631 UC4 ULTRASOUND SENSOR 3
E03 44641 UC4 PLUS ROLL SENSOR W TEMPERATURE PROBE 1
E04 44642 UC4 PLUS ROLL SENSOR 1
H02 44863-23 HOSE ASSEMBLY 122R2-06 32IN L 6FORX 6FORX 2
H06 44862-06 HOSE ASSEMBLY 122R2-04 252 IN L 4FORX 4FORX 1
H20 44865-18 HYDRAULICS FITTING KIT - JD6 1
M01A 446BC+MAN6-1 MANUAL UC4+ BOOM CONTROL 2008 OPERATORS SMALL BOOKLET 1
M01B 446BC+MAN6-2 MANUAL UC4+ BOOM CONTROL 2008 QUICK REFERENCE SMALL BOOKLET 1
M10 UC4+BC+JD6-INST MANUAL INSTALLATION UC4+ JOHN DEERE 4920 1
M13 104557 GROMMET 7/8 ID X 1/4 GROOVE WIDTH X 1-1/4 GROOVE DIAMETER 1
V01 44933S VALVE BLOCK ASSEM UC4-BC 2-STATION CC/LS VARIABLE RATE 1

4
Table 2 – 44865-18 (Rev A) - Hydraulics Fittings Kit – JD6
Item Part Number Name Quantity Picture
F02 104369 PLUG - 6MBP 4
F03 104586 TEE ADAPTER - 6FORXR 6MORT 3
F04 104691 TEE ADAPTER - 4FORXR 4MORT 1
F05 104693 MALE ADAPTER - 4MOR 4MB 1
F06 104884 MALE TO FEMALE ADAPTER - 6MOR 8FORX 2
F07 104885 TEE ADAPTER - 8FORXR 8MORT 2
F08 105226 MALE TO FEMALE ADAPTER - 4MOR 6FORX 1
F09 44917 MALE ADAPTER - 6MB-6MOR MACHINED ORB 6
F10 44928 ORIFICE INSERT .047 IN ONE WAY 4
6 M B - 6 M OR X 90
SIZE IN
1/16TH'S
GENDER: MALE
OR FEMALE
90° ANGLE
SWIVEL
TYPE
GENDER
SIZE
TYPE:
B - ORB
J - JIC
OR - FLAT
FACE
P - PIPE
Fitting Name
Example:

5
The parts that come with your UC4+ System are shown below in their general installation
configuration.
Figure 2 – UC4+ Spray Height Controller Components

6
Figure 3 – Hydraulic Plumbing Schematic

7
4 INSTALLATION PROCEDURE
4.1 EXISTING SYSTEM CHECK
It is necessary to check the existing system’s
functionality before installing the UC4+
system.
1. Drive your sprayer onto a flat piece of
land, with unobstructed boom movement
(e.g. no power lines).
2. Test that all boom functions operate
correctly. As you test each function
check it off in Table 3.
It is necessary to test the boom
functions in all directions
Table 3 – Hydraulic System Function
Check Sheet
BOOM
FOLD
IN
FOLD
OUT UP DOWN
LEFT
MAIN
RIGHT
ROLL* N/
A
N/
A
*Some sprayers may not have this function.
4.2 BOOM SPEED TEST
IMPORTANT:
Raise/lower all boom sections several
times to warm up the hydraulic system.
Grease all moving parts for consistent
results.
1. Lower each boom and main section as
close to the ground as possible.
2. Set your sprayer at field working RPM
on the throttle and mark this value in
Table 4.
You will need a stopwatch or a
watch that displays “seconds” for
the next step.
3. Raise the LEFT boom from its extreme
LOW position to the very TOP of its
travel. Record the time this takes in
Table 4,“Trial #1” for “Left UP”.
4. Lower the LEFT boom from its extreme
HIGH position to the BOTTOM of its
travel. Record this time in Table 4,
Trial #1, for “Left DOWN”.
Be careful when lowering the
booms so they don’t hit the
ground.
5. Similarly, record two more time trials
(Trial #2 & #3) for the LEFT boom and
record in Table 4
6. Repeat Steps 1 through 5 for the RIGHT,
MAIN and ROLL functions.
Your sprayer may not have a roll
feature.
7. Average the three trials recorded for
each boom movement and record this
calculation in the “Average Time” slot in
Table 4.
8. These “Average Times” now represent
how quickly your system can react to
manual control. In Section 4.8, this
procedure is repeated with the UC4+
System installed for comparison and
troubleshooting purposes.

8
Table 4 – Boom Test Record (WITHOUT UC4+ System)
Working RPM:
Boom Trial #1
[Sec]
Trial #2
[Sec]
Trial #3
[Sec]
Avg Time
[Sec]
Left UP
Left DOWN
Right UP
Right Down
Main UP
Main DOWN
Roll CW
Roll CCW
Table 5 – Boom Test Record (WITH UC4+ System)
Working RPM:
Boom Trial #1
[Sec]
Trial #2
[Sec]
Trial #3
[Sec]
Avg Time
[Sec]
Left UP
Left DOWN
Right UP
Right Down
Main UP
Main DOWN
Roll CW
Roll CCW
Some sprayers may not have the Roll functions.

9
4.3 WING SENSOR INSTALLATION
1. Assemble the Breakaway Sensor
Mounting Brackets (B11) as show in
Figure 4 and Figure 5.
Figure 4 – Breakaway Sensor Bracket
Exploded View
Figure 5 – Breakaway Sensor Mounting
Bracket Assembly
To assemble the breakaway sensor
bracket:
a) Assemble the bolt and nut into the
collar.
b) Grease the bottom edge of the collar
and the angled tube of the base.
c) Place the collar onto the angled tube
of the mounting base.
d) Install the spring between the collar
and the upper ring of the base.
e) Insert tube through assembly and
tighten the collar
2. Mount the sensor bracket onto the boom.
If possible, mount the sensor
brackets while the booms are in
their folded position to ensure that
they will not interfere with
anything when the boom is folded
for transport.
3. The sensor mounting brackets can be
installed with the mounting base behind
(Figure 8) or in front of the tube (Figure
6).
It is advised to avoid mounting the
sensor bracket to a breakaway
portion of the boom because a
breakaway action can cause the
UC4+ system to force a boom close
to the ground.
Please refer to the UC4+ system
warranty at the end of the UC4+
Sprayer Boom Control Operator’s
Manual (M01) for implications.
4. Mount the NORAC UC4+ ultrasonic
sensor (E02) into the sensor brackets.
The sensors should be oriented forward
(ahead) of the boom (Figure 6 and
Figure 8)
When installing the UC4+ sensors
(E02), start with the smallest serial
number on the left hand side
proceeding to the largest serial
number on the right hand side
(Figure 9).

10
5. Sensor cables should run through the
mounting bracket tube and then behind
the member the bracket is mounted onto.
Cable-tie the connector in place. The
cable must not be allowed to hang below
the boom (Figure 6).
Figure 6 – Another Acceptable Mounting
Avoid mounting sensors in
locations where they may read
from parts of the boom as shown
in Figure 7.
Figure 7 – Poor Mounting
(Sensor Reading off Boom)
General mounting rules for UC4+
ultrasonic wing sensors:
a) In its lowest position, the sensor
mouth must be 9 inches or more
from the ground.
b) The bottom of the sensor must be at
least 9 inches in front of the spray
nozzles.
c) The bottom of the sensor must be at
least 9 inches above the spray
nozzles.
d) Ensure that there are no obstructions
within a 12-inch diameter circle
projected directly below the center of
the sensor.
e) The sensor should be approximately
vertical at normal operating heights.
Figure 8 – Sensor Mounting Guidlines
AB
B
D
C
Ultrasonic
Acoustic Cone

11
Figure 9 – Sensor Serial Number Installation Location
3 SENSOR SYSTEM
5 SENSOR SYSTEM

12
4.4 MAIN LIFT SENSOR INSTALLATION
1. Assemble the main lift sensor bracket
(B11) as shown in Figure 10.
Figure 10 – Main Lift Sensor Bracket
2. The bracket can then be mounted to the
lowest frame member on the center
section of the sprayer. The bracket
should be mounted so the sensor
mounting collar is in approximately the
center of the sprayer and ahead of the
boom (Figure 11 and Figure 12).
The sensor mounting collar must
not be behind the sprayer’s wheel.
The General Mounting Rules for
UC4+ Ultrasonic Sensors, from the
previous section, must be followed.
Figure 11 – Main Lift Sensor Bracket
Mounting Position
3. Mount the sensor onto the sensor
mounting collar (Figure 11).
Figure 12 – Main Lift Sensor Mounted in
the Correct Location
Bracket Tube
Sensor
Mounting Tab
Sensor Mounting
Colla
r
Bracket Base

13
4.5 ROLL SENSOR INSTALLATION
Mount the roll sensors to the included
roll sensor brackets using the machine
screws and nylon lock nuts, as illustrated
in Figure 13.
The roll sensors must be mounted
tightly to the brackets.
Figure 13 – Mounting the Roll Sensor to
the Roll Sensor Mounting Bracket
When mounting the roll sensors use the
following guidelines and refer to
Figure 14.
a) The smaller the distance between A
and Bin Figure 14, the better the
performance will be.
Distance “A” can not be more than
12”.
b) The roll sensors must not be
mounted below the pivot point.
c) Ensure the roll sensors are sitting
relatively level when the sprayer
chassis and boom are level.
d) Both roll sensors must be mounted
with the circular AMP connector
facing towards the Right-Hand Wing
(when looking from the rear of the
sprayer).
Figure 14 – Mounting Guildines for Center Pivot Sprayers
Connectors towards
Right-hand Wing Æ

14
Figure 15 – Roll sensor mounting with respect to sprayer orientation
4.5.1 Boom Roll Sensor Mounting
The boom roll sensor (E04) must be
mounted to the rotating part of the boom.
Follow these guidelines and refer to Figure
16 and Figure 18 to mount the sensor.
a) Make sure you are using the roll
sensor that does NOT have a
temperature probe (only one cable)
(E04).
b) The boom roll sensor must be
mounted to the rotating part of the
boom suspension.
c) Use cable-ties to secure the bracket
to a square edge feature (square
tube).
d) Ensure the AMP (circular) connector
exits towards the Right Hand Wing
(when looking from the rear of the
sprayer).
e) Securely cable-tie the connector to
the frame.
Figure 16 – Boom frame Roll Sensor Mounting Location
* The boom frame
roll sensor does not
have a temperature
probe

15
4.5.2 Chassis Roll Sensor Mounting
The chassis roll sensor must be mounted to a
non-rotating part of the boom. To mount the
chassis roll sensor, follow the following
guidelines and refer to Figure 17 and
Figure 18.
a) Make sure you are mounting the roll
sensor that does have a temperature
probe (2 cables) (E03).
b) Mount the chassis roll sensor (E03)
to a non-rotating part of the boom.
c) Cable-tie the bracket to a square
edge feature (square tube).
d) The AMP (circular) connector
MUST exit towards the Right Hand
Wing (when looking from the rear).
e) Securely cable-tie the connector to
the frame.
Figure 17 – Chassis Roll Frame Mounting Location
NOTE: The displayed roll sensor has 1 cable coming out of it, but it should have two.
Figure 18 – Boom and Chassis Roll Sensors Correclty Mounted
E04
E03

16
4.5.3 Inverted Roll Sensor Mounting
If desired, the Roll sensor may be mounted
inverted, so long as the connector exits
towards the right-hand boom. Inverted
mounting may be used to optimize the
mounting criteria as explained at the
beginning of Section 4.5
Figure 19 – Inverted roll sensor mounting may be applicable for optimal performance
4.5.4 Temperature probe
Fasten the temperature probe (E03) to the
UC4 valve block using the included
3/8x1/2” bolt as illustrated in Figure 20.
Figure 20 – UC4+ Valve block with
Temperature Probe Installed

17
4.6 HYDRAULIC INSTALLATION
WARNING!
The hydraulic system creates very high
pressure. Before disconnecting any
hydraulic lines ensure all pressure has
been bled from the system. When
changing the boom hydraulic hoses leave
the booms in TRANSPORT POSITION.
IMPORTANT:
Component failure due to oil
contamination is not covered under the
UC4+ System warranty. It is
recommended that a qualified technician
does the hydraulic installation.
4.6.1 Valve Assembly
1. On a clean surface remove all plastic
plugs from the NORAC hydraulic Valve
(V01) (Figure 21).
2. Install the 6MB-6MOR (F09) fittings on
the "P" and "T" ports and tighten to 18
ft-lbs.
Figure 21 – NORAC Valve Block
3. Install the 4MB-4MOR (F05) into the
"S" port and tighten to 11 ft-lbs.
4. Install the orifices (F10) into the "B"
port with the notch facing outward as
shown in Figure 22. An O-ring pick can
be used to ease installing the orifices
into their locations.
5. Install the orifices (F10) into the "A"
ports with the notch facing inward as
shown in Figure 22.
6. Install the 6MB-6MOR fittings (F09)
into the "A" and "B" ports and tighten to
18 ft-lbs.
Figure 22 – Valve Block Assembly
If the Roll Control Option is also
being installed the 3rd station valve
can be assembled before mounting
the valve. See the Roll Control
Option Installation Manual that
came with your kit.