Roberts Irrigation
Company Inc.
Service school 2014
Contact information
P.O. Box 490
1500 Post Rd
Plover, WI 54467
Robertsirrigationwi.com
(715) 344-4747
fax (715) 344-4505
1-800-434-5224
In the north west contact
Barry Graham (715) 296- 4211
It does not take very much current to cause
serious injury or death. BE CAREFUL!!!
480 volt power if not properly used can kill you.
Arc Flash is the result of a rapid release of energy due to an arcing fault
between a phase bus bar and another phase bus bar, neutral or a
ground. During an arc fault the air is the conductor. Arc faults are
generally limited to systems where the bus voltage is in excess of 120
volts. Lower voltage levels normally will not sustain an arc. An arc fault is
similar to the arc obtained during electric welding and the fault has to be
manually started by something creating the path of conduction or a
failure such as a breakdown in insulation.
The cause of the short normally burns away during the initial flash and
the arc fault is then sustained by the establishment of a highly-conductive
plasma. The plasma will conduct as much energy as is available and is
only limited by the impedance of the arc. This massive energy discharge
burns the bus bars, vaporizing the copper and thus causing an explosive
volumetric increase, the arc blast, conservatively estimated, as an
expansion of 40,000 to 1. This fiery explosion devastates everything in its
path, creating deadly shrapnel as it dissipates.
The arc fault current is usually much less than the available bolted fault
current and below the rating of circuit breakers. Unless these devices
have been selected to handle the arc fault condition, they will not trip and
the full force of an arc flash will occur. The electrical equation for energy
is volts x current x time. The transition from arc fault to arc flash takes a
finite time, increasing in intensity as the pressure wave develops. The
challenge is to sense the arc fault current and shut off the voltage in a
timely manner before it develops into a serious arc flash condition.
When these pictures where taken this equipment was still
very hot and smoking.
This is why it is a good reason to make a walk around an
piece of electrical equipment before using to insure no
damage occurred since last use.
Also check lightening arrestors. If it is not in one piece or
has evidence of smoke coming out, it did it's job and
needs to be replaced.
The purpose of a lightening arrestor is to prevent
power surges from damaging equipment. It does
this by shorting the lines when the voltage
reaches a certain point and ideally blowing a fuse.
If the fuse is not blown it will continue to short until
it self destructs. When this happens it can simply
smoke up or dramatically explode.
The Safety Alert
Symbol
is displayed many
places
throughout this manual
and on your System to
indicate when there
is a potential for
Personal injury.
The movement of an Electrically Powered,
Gear-Driven, Irrigation System is relatively
slow. Moving parts are exposed and may
present a potential hazard. Therefore, keep
all equipment, vehicles, people, etc., out of
the System’s path.
DO NOT attempt to perform any
maintenance procedures until the Reinke
Main Control Panel Disconnect Switch and
all Pump and other Disconnect Switches
are locked in the “OFF” position.
Electrical component trouble-shooting and
replacement should be performed by a
certified Reinke Service Technician to
ensure built-in safety features remain intact.
This also ensures System remains compliant
with the National Electric Code and Reinke
Manufacturing Specifications. Replace all
Protective Guards and Shields before
restoring power to the System.
Do not allow anyone to ride or climb on the
System unless they are qualified and
required to do so for maintenance purposes.
The Tower Steps have been provided for
access to the Tower Control Boxes only.
They are not intended for access to the
Span. For instance, should the Sprinkler
Heads require service, use a ladder to
reach them from the ground.
Exercise caution when handling fuel near
Systems equipped with Combustion
Engine-driven Generators and Pumps.
If you suspect a short circuit or the System
is not working correctly, do not touch the
System and keep others away from it. Call
Roberts Irrigation. Electrical
component trouble-shooting and
replacement should be performed by a
certified Reinke Service Technician to
ensure built-in safety features remain
intact. This also ensures System remains
compliant with the National Electric Code
and Reinke Manufacturing Specifications.
When towing a System from field to field,
avoid ditches, rough terrain, overhead
power lines, etc. The Ground Wire MUST
be re-attached to the Ground Rod and
checked for electrical integrity each time
the System is towed.
Avoid any bodily contact with high pressure
water streams from Sprinklers and End
Guns.
Keep away from fields where the System is
chemigating. Make sure the applied
chemical and water does not blow or drift
past the area of intended operation. A
Check Valve must be installed between the
Pivot Center and the Pump to prevent the
mixture of water and chemical from
siphoning back into the irrigation water
source. Comply with all local, state, and
federal regulations.
Do not oversize Fuses. Fuses are sized for a
specific circuit. It is very important to make
sure you have the proper fuse size in place
before initially starting the System and
when replacing Fuses.
Keep away from the System during
thunderstorms or other severe weather
conditions. The Center Pivot is grounded
and the System is probably the highest
object in the field, making it a good
lightning receptor.
Be sure Protective Guards are installed on
all Belts and Driveshafts of Ancillary
Equipment such as Combustion Engines,
Electric Motors, Pumps, etc.
Do not operate System when temperatures
are below 40°F (4.5°C). This can cause
structural damage to the System.
In most states it is unlawful to spray water
on state and county roadways. This is a
serious hazard and must not be allowed.
Driveshafts may start without warning.
Keep away from Driveshafts to prevent
clothing or limbs from being entangled,
resulting in severe injury.
.
If your System is equipped with any AutoStop or Auto-Reverse Mechanism, make
sure they are working correctly and a
Tower Barricade is properly installed as
per this manual. Reinke disclaims any
and all liability (including any liability
created pursuant to the Irrigation
Systems Warranty) with regard to
damage to the Irrigation System, or to
other property, or personal injury or
death, caused by improper installation or
maintenance of Reinke-supplied Tower
Auto-Reverse or Auto-Stop Switches or
Tower Barricades, or by use of customer supplied
Barricades
Do not endanger your own life and
possibly the lives of others by being
Negligent.
Maintain adequate crop clearance.
Allowing the systems trussing to drag in
the crop can cause structural damage to
the system.
New laws coming into effect April 1st The following are
excerpts from a letter from the state. The full document
can be found at
http://dsps.wi.gov/Documents/Industry
%20Services/Forms/Electrical/Electrical%20FAQ.pdf
How to use a multimeter
Safety Information
A "Warning" statement identifies hazardous conditions and actions that could cause bodily harm or death.
A "Caution" statement identifies conditions and actions that could damage the Meter or the equipment under test.
To avoid possible electric shock or personal injury, follow these guidelines:
• Use the Meter only as specified in this manual or the protection provided by the Meter might
be impaired.
• Do not use the Meter or test leads if they appear damaged, or if the Meter is not operating
properly.
• Always use proper terminals, switch position, and range for measurements.
• Verify the Meter's operation by measuring a known voltage. If in doubt, have the Meter
serviced.
• Do not apply more than the rated voltage, as marked on Meter, between terminals or
between any terminal and earth ground.
• Use caution with voltages above 30 V ac rms, 42 V ac peak, or 60 V dc. These voltages pose
a shock hazard.
• Disconnect circuit power and discharge all high-voltage capacitors before testing
resistance, continuity, diodes, or capacitance.
• Do not use the Meter around explosive gas or vapor.
• When using test leads or probes, keep your fingers behind the finger guards.
• Only use test leads that have the same voltage, category, and amperage ratings as the meter
and that have been approved by a safety agency.
• Remove test leads from Meter before opening the battery door or Meter case.
• Comply with local and national safety requirements when working in hazardous
locations.
• Use proper protective equipment, as required by local or national authorities
when working
in hazardous areas.
• Avoid working alone.
• Use only the replacement fuse specified or the protection may be impaired.
• Check the test leads for continuity before use. Do not use if the readings are high
or noisy.
We will be discussing the Fluke 117 and
recommend it as an very capable basic meter.
It is available from many places and cost in the
range of $155.
Before doing any measurement you should check
the quality of his test probes and leads for both
physical wear and electrical fitness.
To check electrically set the meter to ohm and
hold both probes together. You should read near 2
ohms or less. If your leads do not read this or
appear damaged REPLACE IMMEDIATELY.
Most of the voltages that we will be testing will be
AC or alternating current and is what the power
company or your generator will supply.
DC or direct current is generally was is coming
from a battery.
Even though the 117 can
measure current it does
not measure past 10
amps and must be put
into the circuit.
We recommend the use
of a separate camp on
meter or probe for
current measurements
They can be purchased
for under $100
Even though the 117 can
measure current it does
not measure past 10
amps and must be put
into the circuit.
We recommend the use
of a separate camp on
meter or probe for
current measurements
They can be purchased
for under $100
Terminology
1 Riser pipe
2 Top elbow
3 Pivot leg
4 Pivot bearing
5 Cam Plate or Wheel
6 Main control panel
7 Pivot Boot
8 Collector ring
9 Pivot gasket
10 Incoming power
11 Lower elbow
12 Pivot walk way
Terminology
1 Tower top
2 Tower boot
3 Springs and spears
4 Tower box
5 Tower stiffener
6 Tower auto-stop/ auto
reverse
7 Center Drive
8 Wheel gear
9 Flange
10 Hook joint
Your tower auto stop or auto reverse should be
checked yearly for operation. This will also test the
safety circuit of the machine to insure there have
been no compromises
On the left is a helical center drive. It comes in several
gear ratios including 25.5:1, 30:1, 40:1, 60:1. Also there
is with and with out thermal protection. Corner arms do
not have thermal protection on there center drives.
The middle is an example of a worm gear. These come in
several gear ratios also 21:1, 30:1, 40:1, and 60:1.
On the right we have a rain resistant motor they come as
1 hp and 1.5 hp. Also with and with out thermal
protection.
When replacing any motor make sure that somewhere it
has thermal protection on it. This is what is going to save
the motor from burning up should something go wrong.
That protection will be built into the motor like the new
machines are or in the tower boxes like the old machines
were.
Terminology
At the beginning we start with
the pivot point.
Then all A towers
The next to last tower is the B
tower
The last tower is the C tower
on a straight machine.
Terminology
End boom
End gun
Booster pump
Terminology Control panel
Standard
Rpm Advanced / Pac 3
Rpm Preferred / Rams
Rpm Preferred touch
Why one panel
vs. the other?
Terminology
Service is where your power comes in from the
power company.
Normally from there it goes to the pump panel/vfd
Then off to the pivot.
All panels and equipment should be checked at
least yearly for holes, rust, or damage from
rodents or people.
Terminology
Pump Panel / Well panel
VFD
Terminology
Hinge tower
Corner arm/sac
Terminology Fuses
These are the various fuses that may be in your
pivots.
To test a fuse remove it from the circuit when the power
is off.
Place your meter in ohms. Place one lead on each metal
end of the fuse. A good fuse depending on the size and
type will read less than 10 ohms.
You can also place the meter in continuity and listen for
the beep.
Some fuses you can see are bad but do not count on that
meaning they are good. Fuses can look good and still be
bad.
Checking a pressure switch can be difficult. It
needs to have pressure to close. After getting it
closed it is just like checking a fuse. We are
looking for less than 5 ohms.
It can also be tested based on how it works in the
system.
The Pac timer can be tested for timing accuracy
with a stop watch.
Overwatering timers should be checked every
year. To do so start your system and turn it to 0%
or speed off. In about 20 minutes or less your
system should shut off.
Percent timers should also be checked yearly.
They would be tested with a stop watch. It times
with a pecentage of a minute. At 50% it would be
on for 30 seconds and off for 30 seconds.
Micro-switches typically have 3 screws on them.
There is a common or C, a normally open or N.O.
And a normally closed or N.C. When the switch is
not depressed is should read much like a fuse
between C and N.C. When the switch is depress it
should read between C and N.O.
Disconnect
It is just a special kind a switch.
To test this with the power off measure from one
side to the other side of the same “pole” or wire. It
should measure less than 5 ohms.
Contactors and relays are simply electrically
actuated switches. There are 2 things to check on
contactors and relays. The first being the coil. This
is where power is applied to activate the switch.
And the switch part it's self. The coil for the relay
should be check for ohms against a known value
specific to that relay. The contacts or switch part
should either be open or closed similar to the
micro-switch.
An overload is a current measuring device
designed to make sure a motor is not over
worked. It needs to be set to the full load current
of the motor it is being used on. It can be tested in
2 ways. The first is the control contacts or switch
to make sure it is closed to allow operation.
Second is through the measuring part of it to
make sure that it is not affecting the motor it is
working on.
Coils for valves are just like the coils for a relay or
contactor. They are measured against a known
value to determine if they are good.
The skinner coil used on many end guns should
have an ohm reading of 180 Ohms ± 10%. Care
must be taken when measuring any device that
the power is off and that it is sufficiently removed
from the circuit so it is not affected by the rest of
the circuit.
Arc suppressors
These reduce the arcing that occurs when power
is removed from a coil. They will increase the life
of the switch controlling it. Whenever changing a
contactor, relay, or coil with one on, or if it is
physically damaged, replace the arc suppressor
also.
Here we have an example 2 of the more common
end gun and 3 most common valves to control
them. The Nelson SR 100 and komet twin 101
end guns. And the nelson 800 valve, 2”
auquamatic, or komet 850 valve.
Here is one example of
a 2 horsepower
booster pump.
Currently they are
mounted different but
function the same.
The Basic Pivot
Color Code
1
2
3
4
5
6
7
8
9
10
Neutral
Percent
End gun
Safety
Ground
Forward
Reverse
L1
L2
L3
White
Orange
Yellow
Brown
Green
Purple
Pink / Old systems gray
Blue
Red
Black
This is also the order a collector ring is typically
wired.
To test the collector ring with the power off test
from the top wires to the bottom slip rings with a
meter for low ohm (less than 5) or continuity.
Make sure that when you do this you unhook one
side to ensure you are not reading other circuits.
Pivot stop switch
Check every year that this switch works and is adjusted
to hit the trip.
To test go into the collector ring and read between the
red and blue with an ohm meter. It should read less than
5 ohms without being tripped. And OL while tripped.
This switch works by opening the safety circuit. We will
discuss this in more detail later.
The end gun switch
This is used to automatically actuate the end gun on and off.
To test measure between blue and red just like a stop switch.
Care must be taken that the switch is rewired correctly the red
wire must be wire nutted to the yellow wire and the blue wire is
put into the slip ring. This is wired so that any induced voltage
from the other wires in the span cable is removed when the circuit
is off to ensure the end gun turns off.
The switch should also be checked yearly for alignment and
movement. If the switch does not spring into position it should be
replaced
Your pivot may not have either of these switches
depending on the type of panel that you have.
The A Box
The A box is the most common box on the system, it consists of a
disconnect, A contactor, 2 micro-switches, a set of cams and a yoke
with thumb screws. If you have an older system it may also include
overload protection. This box uses the alignment system to tell the
tower that it is on when to start and stop. If the tower gets out of
alignment it will shut the whole machine down. If the Disconnect in
the tower box is off the machine will not stay running.
The B Box
The B box is just like the A box but it also has the over
watering timer. This timer resets when the tower moves
and counts down when the tower stands still. If it does not
move in the allotted time the safety circuit will open up and
shut the machine down. Typically this is 20 minutes.
The C box
The C box is the simplest box to start with but when wired gets
more complex. It just has a disconnect and contactor to start
with. This is because you add several things into it. For example
you can have a booster pump, end gun solenoid, end run light,
GPS, Tower auto stop, and auto reverse. This is where the
safety gets hooked to neutral and sent back to the pivot panel.
Booster pump box
This box controls the booster pump if it is equipped. It consists of a disconnect, a
honeywell relay, pressure switch (depending on age), and a reversing contactor. The
purpose of the reversing contactor is to provide power to the pump so that is only spins in
one direction no matter which way the system is going. We will go into detail of this later.
The honeywell is there to allow the reversing contactor to operate properly. Every booster
pump should have a working pressure switch so that it will not run with out water. If it
does this will greatly decrease the life of the pump.
Main Control panel
Main disconnect
This is where our 3 phase 480 comes in and where our
first set of fuses are. With this off there should not be
power anywhere else in the panel.
Caution: Not all applications are the same, voltage may
be present.
After the power leaves here one place it will go is
to the transformer. This steps down the voltage
from 480 to 120 volts. There are 3 fuses here and
must be removed to be tested. Our control circuits
are powered with 120 volts.
The 3 phase power also will go to the main
reversing contactor. There are 2 contactors joined
together in a way that only one is able to pull in at
a time. This is what switches direction for the
machine. It does this by swapping 2 of the 3
phase wires depending on direction.
A pivot will run clockwise in forward and counter
clockwise in reverse. If it is trying to go in reverse
when it is suppose to be going forward it is out of
phase. A pivot needs to have the phasing checked
whenever it has a new power source applied to it.
To change and out of phase system to be in
phase it is recommended to swap L1 and L3, or
the out side 2 wires after the power has been
turned off. ALWAYS check to make sure the power
is off before working on any equipment.
The other part of the Reversing contactor is done
by the auxiliary contacts. These contacts send
120 volts down the forward and reverse wires,
depending on direction, to tell the towers which
way the system is running. They also provide us
with a source of power. This will be explained in
more detail later. When the pivot is to run forward,
the forward contactor's coil gets powered and
pulls in. The same happens with in reverse.
When the system is started these contactors are
what you hear “pull in.” If the machine does not
stay running on it's own you will hear them “drop
out.”
Another part of the reversing contactor involves
the safety circuit. The control of that comes from
our safety relay.
When the start button is pushed you are
overriding the machine's safety circuit. If the
safety is good the safety relay will “pull in” and
“latch” the main reversing contactor.
Next lets look at the safety circuit.
On our straight Reinke
machine we have a “cold”
safety. This means that
when safety is good we
bring back a neutral to the
main control panel. This
safety starts at the C box
and goes through things
like tower auto stops, tower
auto reverse, tower box
disconnects, safety micro
switches, and pivot stop
switches for example.
Any one of these items can open safety and stop
the machine. Safety should be check with the
power off by reading a continuity loop with an ohm
meter between safety and neutral, Brown and
white, any where on the system out to the end. Be
sure to isolate out that part of the circuit when
doing so. You should have a reading of less than
15 ohms when good.
If our safety in our machine is good it will “pull in” the
safety honeywell relay. One side of this relay is powered
with 120 volts. If the safety is open and the main
disconnect is on there will be 120 volts on the safety
circuit and the pivot side of the open. This is one more
reason to test with the disconnect off. The coil of this
relay should read 280 ohms.
With our safety relay “pulled in” and power to the
coil of one of our reversing contactors there is a
circuit and our contactor “pulls in” and allows our
machine to start running. This also provides 120
volts to some other circuits in our panel.
One of the things that gets power is the percentage
timer. This is what normally powers the 2 lights and
the end tower contactor to make the end tower run.
120 volts is applied to the “motor” and as time
goes by it opens and closes the contacts a
percentage of 60 seconds. The signal of 120 volts
is sent out on the orange wire when ever the end
tower is suppose to be moving. This also lights up
the running lights at the same time.
The next circuit is the end gun and water supply
circuit. When the water supply switch is turned on
and the machine is running 120 volts is sent out
on the yellow wire. Also the “well control”
honeywell is energized and closed. This will send
out the signal necessary for your pump to turn on
and or stay running.
The yellow wire is then closed or broken by the end gun
switch and sent out to the end tower. This is where it is
connected to the skinner coil or the booster pump box. If
it is a skinner coil it can be tested from the pivot with an
ohm reading. Switch on it should read around 190 ohms.
This varies based on machine.
Now that we have the basic system down lets
move onto some options.
Rpm Adv
Most of our system
and even pivot panel
stays the same.
However we remove
the 2 switches at the
pivot point. And the
“face plate” changes.
There are 2 fuses to
check on this timer.
They are different, one
is ¼ amp and the top
board is a 4 amp.
RPM Preferred /
RAMS
There are 3
fuses to be
check and
changed on the
back of here.
They are a value
of AGC 2.5.
This is similar to
the Adv. Panel as
far as the rest of
the system is
wired.
Rpm Touch
There are 3 fuses here
also they are all MDL
and value of 1.5 and 4
amps.
Caution needs to be
taken when removing
the fuse so the circuit
board it is mounted on
is not damaged.
The wireing is also
similar to the Pac 3 and
Rams on the rest of
the system
Cold wire GPS
This is the current end of system gps. This is what gives our
computerized pivot panel it's location information. When
your screen displays satellites this is where that information
is coming from. There are 2 wires for data and 3 wires for
power. That power is coming from forward or reverse and
neutral. On the next slide we will see how it is wired into the
end.
Trouble shooting End of system GPS
For the old style end of system GPS,
hot wire GPS, we are going to watch the
lights and see how they are blinking.
No power light on- Check incoming
power to Line Receiver. If you have
power then the receiver is bad
Unless the lights are blinking they have
no meaning.
Line data blinks when ever we receive
data from the end tower.
Data out blinks when ever we send data
to our computerized panel
Error blinks if the data coming from the
end is bad.
Both GPS units take time to acquire satellites to
run. This can be several seconds to several
minutes. This is normal. When you see a STALL
error on your panel or FRCD DR this means that
you are not receiving GPS data. With a STALL the
machine has shut down. Forced Dead reckoning it
is still operating and guessing where is should be
for a short time until the GPS updates or it turns
into a Stall.
This is one version of the old style end of system board or Hot wire.
The power light indicates we have power.
The base light indicates the board is put into a base recording mode.
The WAAS light indicates whether or not we are using the more
accurate WAAS satellites.
The Sats >3 light indicates when our satellite count has gone above 3
The Data out light indicates we are sending data to the pivot
The GPS data light indicates that we are getting data from our anttenna.
If you do not have GPS then you will have a
resolver in the collector ring for positioning data.
There are 2 data wires and 2 power wires. There
is also a fuse in this box ¼ amp AGC.
Operation
Trouble shooting
Alignment
Keep in mind that do to normal wear to the
structure of the machine alignment will have to be
adjusted. A machine can continue to run very
crooked for a very long time if the alignment is not
properly set. This however causes stress to the
machine if it is left for too long and too severe.
If your pump won't start
double check that the
power company does
not have you on control
for those of you that
are under this program.
Preseason Maintenance
Warranty for retro or replacement parts
Wheel gears
Center Drives
Electrical
5 years
2 years
2 years
When picking up a replacement parts we may
need information to activate the new parts
warranty. This includes the parts serial number,
the system serial number, system hours, old part
serial number, and field name.
If in the first 10 years
the gear oil is
replaced with
sprinkler lube it can
be extended another
2 years and 2000
hours.
It is recommended
this be done after the
first 2 years
A basic E2 span can weigh up to 4000 lbs empty,
use adequate lifting equipment when changing
any wheel gears or tires.
Before starting your turbine pump it is our
recommendation to let 1 gallon of mineral oil drip
down to prelubricate the pump.
Then throughout the season make sure your
dripper is adequately filled with mineral oil.
If you have a centrifugal pump make sure your
packing gland is properly adjusted.
Keep in mind if a vertical hollow shaft motor is to
be moved the oil must be removed to retain
warranty.
GE motor
Baldor motors used on centrifugal pumps and
some rotary phase converters
There is also a grease zerk on the under side of
the newer collector reels.
The first time the machine is to be run you should
check the operation of your sprinklers and
pressure regulators if equipped. With the
regulators it is important to make sure water is not
spraying out of the seems.
Also compare operating pressure to what your
system is suppose to be at. If it is too low it can
indicate that there is a problem with the water
supply.
Maintenance in season
If regular inspection of sand pumping is not kept
up this could happen to you.
If possible it is recommended to shut off as many
disconnects as possible( service, pump, and
pivot). This will isolate out each part in case there
is a lightning strike or power surge. This is
especially true if a storm is approaching.
Post season Maintenance
It is also recommend to lock equipment off if not in
use when there is concern about vandalism. If you
are going to leave it powered up be sure to pull
the control fuses on the well so that it can not be
accidentally started after the underground lines
have been pumped out.
Recommended replacement parts to have on hand
1 set of fuses for all equipment, this includes the service,
pump panel, pivot panel, and computerized panel
Pivot light bulbs
Optional replacement parts to have on hand
Tower contactor, microswitch, arc suppressor, and skinner
valve
RPM Advanced / PAC 3 timers
The original PAC 1 timer was designed to improve
on the mechanical % timers. It had a simple
design 2 dials to set the depth of application, one
for each direction.
The PAC 2 timer looks very similar to the current
PAC 3 timer. It has 4 buttons and a settings menu.
These timers can be simple percent timers or
upgraded to include Parks, 2 end guns, and
sector programing.
The PAC 3 timer is the current model. It can be
used in 3 levels of operation. The first being a
basic percentage timer. The next level adds a
park, end gun, and sector programing capability.
This is the PAC 2 end gun option. The highest
level is the RPM advanced add on board. This
option gives you park, end gun, sector, pressure
override and restart, auto reverse, and remote
control capabilities.
Running a pivot with a PAC 3 timer is very similar
to a basic percentage timer. The main differences
start with setting the speed. You are no longer
determining a percentage of speed but a depth of
application. The next difference comes when you
have the upgraded timers. Your end guns, and
park or pivot stop are not set in the timer. The last
major difference occurs with the RPM ADV, if set
to it can override the low pressure safety when
ever the machine is started automatically for a
predetermined time.
If your pivot does not try to pull in the main
contactor check this setting. You can verify what it
is suppose to be based on the board mounted on
top of the PAC timer to the right.