AIRGUARD N28190 Blockage Prevention System Instruction Manual
- May 15, 2024
- AirGuard
Table of Contents
AIRGUARD N28190 Blockage Prevention System
PART KIT INSTALL INSTRUCTIONS
Title| Airguard Blockage Prevention System Upgrade Instructions| RELEASE
DATE| 2023-03-01
---|---|---|---
STEP| 1. Remove existing fan screen (Item 1) from the fan housing (Item 2).|
REV #| 1.0
PART KIT #| Varies
PARTS LIST
Item| Part #| Description
1| —| N28190 Fan Screen /or/ N37821 Fan Screen
2| —| N28190 Fan Housing /or/ N37821 Fan Housing
---|---|---
Title| Airguard Blockage Prevention System Upgrade Instructions| RELEASE
DATE| 2023-03-01
---|---|---|---
STEP| 2. Install supplied mounting bracket (Item 1) to fan housing (Item 2)
using existing bolts and nuts (Item 3). Angle mount bracket in a position that
ensures the supplied hydraulic hoses reach the fan motor. Additional holes in
bracket face (Item 4) are for easy access with an impact driver. Bracket may
look different than shown below.| REV #| 1.0
PART KIT #| Varies
| PARTS LIST | PARTS LIST |
|---|---|
| Item | Part # |
| 1 | 7556 /or/ 9026 |
| 2 | — |
| Title | Airguard Blockage Prevention System Upgrade Instructions |
| DATE | 2023-03-01 |
| --- | --- |
| STEP | 3. Bolt Oil Cooler/Radiator Assembly (Item 1) to BP System Bracket |
(Item 2) using supplied 10mm x 25mm Bolts (Item 3)and 10mm lock nuts (Item 4).
If only installing snorkel kit without Radiator, then install plastic plugs
(Item 5) onto BP Sytem Bracket (Item 2). This step of the installation may
already be completed at the Airguard facto- ry prior to shipping.| REV #| 1.0
PART KIT #| Varies
PARTS LIST
Item| Part #| Description
1| 7996| Oil Cooler and Manifold Assembly
2| 7546| Main BP System Bracket
3| 7515| Hex Bolt, 10mm x 25mm Grade 8.8
4| 7516| Lock Nut, 10mm Grade 8.8
---|---|---
5| 7683| BP System Bracket Plug
Title| Airguard Blockage Prevention System Upgrade Instructions| RELEASE
DATE| 2023-03-01
---|---|---|---
STEP| 4. Remove the packaging materials prior to the assembly of these
brackets. Mount BP System Main Bracket with Oil Cooler (Item 1) or Main
Bracket with Plugs (Item 2) to Fan bracket (Item 3) using supplied pivot pins
(Item 4). Secure in place with 3.5mm cotter pins (Item 5).| REV #| 1.0
PART KIT #| Varies
PARTS LIST
Item| Part #| Description
1| —| BP System Main Bracket with Oil Cooler
2| —| BP System Main Bracket with Plugs for Snorkel Only Install
3| —| Fan Bracket
4| 7502| Pivot Pin For BP Systems
---|---|---
5| 7513| 3.5mm Cotter Pin
Title| Airguard Blockage Prevention System Upgrade Instructions| RELEASE
DATE| 2023-03-01
---|---|---|---
STEP| 5. Attach Mesh Screen (Item 1) or Snorkel Housing (Item 2) to front of
BPS using latches (Item 3).| REV #| 1.0
PART KIT #| Varies
PARTS LIST
Item| Part #| Description
1| 7568| Mesh Screen
2| 7977| Snorkel Housing
3| —| Overcenter Latch
---|---|---
Title| Airguard Blockage Prevention System Upgrade Instructions| RELEASE
DATE| 2023-03-01
---|---|---|---
STEP| 6. Identify the model of aircart that the Airguard Blockage Prevention
System is being installed on. For models with external check valves, the
connections must be made on the tractor side of the hydraulic circuit as shown
below.| REV #| 1.0
PART KIT #| Varies
Title| Airguard Blockage Prevention System Upgrade Instructions| RELEASE
DATE| 2023-03-01
---|---|---|---
STEP| 7. Remove factory hoses (Item 1) from side of fan motor (Item 2).
Remove the hoses (Item 1) on the tractor side of the external check valve, as
shown below. Identify which hose is the pressure side of the circuit. On newer
models there is a shut off valve on the pressure side of the circuit. The
external check valve will have a direction- al arrow that always points to the
pressure side. If you do not have an external check valve you will attach
directly to the fan motor.| REV #| 1.0
PART KIT #| Varies
PARTS LIST
Item| Part #| Description
1| —| Existing Hose from Tractor to Fan Motor
2| —| Hydraulic Motor
3| —| External Check Valve
---|---|---
Title| Airguard Blockage Prevention System Upgrade Instructions| RELEASE
DATE| 2023-03-01
---|---|---|---
STEP| 8. Hoses may be routed to suit your specific aircart installation.
Install supplied 3/4” hydraulic hose (Item 1) to the “TRACTOR PRESSURE” port
of the radiator block (Item 2), using adapter (Item 3) to make the connection.
Use model specific connec- tion as per instuctions below to attach the other
end of the hose to the factory pres- sure line (Item 4) that was removed from
the fan motor.| REV #| 1.0
PART KIT #| Varies
All of the hydraulic connections in Step 8 to 12 should only be hand tightened until all hoses and fittings are installed. Some connections may need to be rotated in order to install other components.
PARTS LIST
Item| Part #| Description
1| 9016| BPS 3/4” Hydraulic Hose – 60”
2| —| “TRACTOR PRESSURE” Port – BP System Manifold
3| 7506| Fiting – Elbow – 3/4” JIC Male – 3/4” ORB Male
4| —| Tractor Supply (Pressure) Hydraulic Hose
---|---|---
5| 7242| Fitting – Straight – 5/8” JIC M – 3/4” JIC M
6| 7538| Fitting – Straight – 3/4” JIC M – 3/4” JIC M
Title| Airguard Blockage Prevention System Upgrade Instructions| RELEASE
DATE| 2023-03-01
---|---|---|---
STEP| 9. Install supplied 3/4” hydraulic hose (Item 1) to the “TRACTOR
RETURN” port of the radiator block (Item 2) using adapter (Item 3). Use model
specific connection as per instuctions below to attach the other end of the
hose to the factory pressure line (Item 4) that was removed from the fan
motor.| REV #| 1.0
PART KIT #| Varies
PARTS LIST
Item| Part #| Description
1| 9016| BPS 3/4” Hydraulic Hose – 60”
2| —| “TRACTOR RETURN” Port – BP System Manifold
3| 7506| Fiting – Elbow – 3/4” JIC Male – 3/4” ORB Male
4| —| Tractor Return Hydraulic Hose
---|---|---
5| 7242| Fitting – Straight – 5/8” JIC M – 3/4” JIC M
6| 7538| Fitting – Straight – 3/4” JIC M – 3/4” JIC M
Title| Airguard Blockage Prevention System Upgrade Instructions| RELEASE
DATE| 2023-03-01
---|---|---|---
STEP| 10. Install supplied 3/4” hydraulic hose (Item 1) to the “FAN PRESSURE”
port of the radiator block (Item 2) using adapter (Item 3). Use model specific
connection as per instuctions below to attach the other end of the hose to the
factory fan pressure line/ port (Item 4) coming from the fan motor.| REV #|
1.0
PART KIT #| Varies
PARTS LIST
Item| Part #| Description
1| 9016| BPS 3/4” Hydraulic Hose – 60”
2| —| “FAN PRESSURE” Port – BP System Manifold
3| 7506| Fiting – Elbow – 3/4” JIC Male – 3/4” ORB Male
4| —| Fan Supply (Pressure) Hydraulic Hose
---|---|---
5| 7539| Fitting – Elbow – 3/4” JIC M – 3/4” JIC F
6| 7226| Fitting – Straight – 3/4” JIC M – 5/8” JIC F
Title| Airguard Blockage Prevention System Upgrade Instructions| RELEASE
DATE| 2023-03-01
---|---|---|---
STEP| 11. Install supplied 3/4” hydraulic hose (Item 1) to the “FAN RETURN”
port of the radiator block (Item 2) using adapters (Item 3 & 5). Use model
specific connection as per instuctions below to attach the other end of the
hose to the factory fan return line/ port (Item 4) coming from the fan motor.|
REV #| 1.0
PART KIT #| Varies
PARTS LIST
Item| Part #| Description
1| 9016| BPS 3/4” Hydraulic Hose – 60”
2| —| “FAN RETURN” Port – BP System Manifold
3| 7543| Fitting – Straight – 3/4” JIC Male – 3/4” ORB Male
4| —| Fan Return Hydraulic Hose
---|---|---
5| 7539| Fitting – Elbow – 3/4” JIC M – 3/4” JIC F
6| 7226| Fitting – Straight – 3/4” JIC M – 5/8” JIC F
Title| Airguard Blockage Prevention System Upgrade Instructions| RELEASE
DATE| 2023-03-01
---|---|---|---
STEP| 12. Install supplied 1/2” hydraulic hose (Item 1) to the “CASE DRAIN”
port of the radiator block (Item 2) using adapters (Item 3 & 4). and to the
fan motor case drain line (Item 5). Use model specific connection as per
instuctions below to attach the other end of the hose to the factory fan case
drain line/port (Item 5) coming from the fan motor.| REV #| 1.0
PART KIT #| Varies
PARTS LIST
Item| Part #| Description
1| 7267| BPS 1/2” Hydraulic Hose – 60”
2| —| “FAN CASE DRAIN” Port – BP System Manifold
3| 7264| Fitting – Straight – 1/2” JIC Male – 3/8” ORB Male
4| 7686| Fiting – Elbow – 1/2” JIC M – 1/2” JIC F
5| —| Fan Case Drain Hydraulic Hose
---|---|---
6| 7263| Fitting – Tee – 1/2” JIC M – M – F
7| 7294| Fitting – Straight – 1/2” JIC M – 3/8” JIC F
8| 7293| Fitting – Tee – 3/8” JIC M – M – F
Title| Airguard Blockage Prevention System Upgrade Instructions| RELEASE
DATE| 2023-03-01
---|---|---|---
STEP| 13. If you have purchased a bypass kit for your BP System, please refer
to the bypass kit owners manual for connection instructions.| REV #| 1.0
PART KIT #| Varies
PARTS LIST
Item| Part #| Description
1| —| —
2| —| —
---|---|---
Title| Airguard Blockage Prevention System Upgrade Instructions| RELEASE
DATE| 2023-03-01
---|---|---|---
STEP| 14. Complete the hydraulic installation by ensuring that all
connections made in Step 8 to 13 are tightened. Position/Routing of hydraulic
hoses may vary to suit each spe- cific machine installation. Zip tie hoses to
reduce wear and ensure tidy installation.| REV #| 1.0
PART KIT #| Varies
WARNING
- Check for contaminants in oil. Dirty oil makes for plugged valves and can cause issues with over pressurizing the radiator core.
- Start tractor and warm oil prior to starting up fan. This should be done anytime the fan circuit is started up.
- Engage fan hydraulics at low flow rate and low fan RPM and slowly increase.
- Bleed hydraulic lines of air for stable oil flow.
- Check pressures at radiator gauge. If pressure is higher than normal, steps must be taken to reduce return line pressure.
- Call Airguard if you have any questions. 1-604-744-0070
START UP PROCEDURE
After you have installed the Airguard Blockage Prevention System it’s critical that you start the Aircart fans very slowly. You’re introducing an air pocket that must be moved slowly to the tractor while you prime the hydraulic lines with oil. This process is a good way to make sure your fittings are sealed and secure.
-
Get your oil warmed to 80-100 deg F. If your oil is cold, the viscosity is very high and it will not move through the internal components easily. By warming the oil first, everything will operate as it should.
-
Initiate your fans with 500 Fan RPM at 25% oil flow (or 10% of your max fan speed). If everything looks good, the pressure is just starting to register on the Airguard pressure gauge. If all your fittings are holding their seal, continue to the next step. If your fan is NOT moving, that’s okay. The oil is circulating. Operate this way for 5
NOTE: If there is a pressure spike at this low oil flow rate, there is potential for an air lock. Disconnect the end fitting on the Return Line at the SCV and drain off some oil to release the pressure. Reconnect the end fitting and repeat Step 2. -
Run 1000 Fan RPM at 45% oil flow (or 35% of your max fan speed). Operate for 5
-
Run 2000 Fan RPM at 65% oil flow (or 75% of your max fan speed). Operate for 5
-
Run 3500 Fan RPM at 85% oil flow (or 100% of your max fan speed). Operate for 3-5
-
Take time to ensure that your conveyor or auger is working properly in conjunction with your Airguard kit. Turn your fan RPM down to 50% oil flow and engage the conveyor/auger. If everything is operating as it should, you have successfully installed your Airguard Blockage Prevention System kit.
If there are any questions or concerns about the operations, call your AIRGUARD Sales Representative using contact information found at www.airguardproducts.com/contact or visit us at www.airguardproducts.com/productsupport.
Now you’re ready to operate! Follow the same warm up procedure you do every day and go seed. This is a procedure that we highly recommend at the beginning of each future season, to ensure the continuation of successful operations. It is a critical step in the introduction of new machinery to your farm operation. After the freeze and thaw of seasons we want to eliminate any air pockets or leaks that could slow preparations.
Title| Airguard Blockage Prevention System Upgrade Instructions| RELEASE
DATE| 2023-03-01
---|---|---|---
STEP| 16. There are three ways to mount the Snorkel Kit. It can be mounted
directly to the catwalk (Page 18), to the railing (Page 19), or using the
model-specific Snorkel Mounting Kit (Pages 20-25).| REV #| 1.0
PART KIT #| Varies
THREE SNORKEL MOUNTING OPTIONS
Title| Airguard Blockage Prevention System Upgrade Instructions| RELEASE
DATE| 2023-03-01
---|---|---|---
STEP| 17. Catwalk Installation: Drill two 7/16” holes in your catwalk
(Item 2) 1-3/4” apart. Using the two bolts (Item 3) and lock nuts (Item 4)
provided, bolt the top Snor- kel Inlet Assembly (Item 1) directly to the
catwalk. Use the bridge clamp (Item 5) to attach 8” flexible hose (Item 6) to
top Snorkel Inlet (Item 1).| REV #| 1.0
PART KIT #| Varies
PARTS LIST
Item| Part #| Description
1| 7576| Top Snorkel Inlet Assembly
2| —-| Catwalk
3| 7515| Hex Bolt, 10mm x 25mm GRADE 8.8
4| 7516| Lock Nut, 10mm GRADE 8.8
---|---|---
5| 7578| Bridge Clamp, 8”
6| 7572| Flexible Snorkel Hose – 8”
Title| Airguard Blockage Prevention System Upgrade Instructions| RELEASE
DATE| 2023-03-01
---|---|---|---
STEP| 18. Railing Installation: Using two of the bolts (Item 4) and
lock nuts (Item 5) pro- vided, hand-tighten the Snorkel Inlet 90deg mount
plate (Item 2) and the railing plate (Item 3) around the railing (Item 8).
Next, bolt the top Snorkel Inlet assembly (Item 1) to te mount plate (Item 2).
Straighten so that the assembly is perpendicular to the railing, then fully
tighten. Last, use the bridge clamp (Item 6) to attach 8” flexible hose (Item
7) to top Snorkel Inlet (Item 1).| REV #| 1.0
PART KIT #| Varies
PARTS LIST
Item| Part #| Description
1| 7576| Top Snorkel Inlet Assembly
2| 7593| Snorkel Inlet 90deg Mount Plate
3| 7989| Railing Plate
4| 7991| HEX BOLT, 10mm x 50mm GRADE 8.8
5| 7516| Lock Nut, 10mm
---|---|---
6| 7578| Bridge Clamp, 8”
7| 7572| Flexible Snorkel Hose – 8”
8| —-| Railing
Title| Airguard Blockage Prevention System Upgrade Instructions| RELEASE
DATE| 2023-03-01
---|---|---|---
STEP| 19. For Tow Behind Aircarts with fans at the rear. Install the bracket
(Item 1) onto Aircart Stair Stringer (Item 2) using existing stair tread
hardware (Item 3).| REV #| 1.0
PART KIT #| Varies
PARTS LIST
Item| Part #| Description
1| 7955| John Deere Snorkel Mount Bracket Assembly
2| —| Stair Stringer
3| —| Existing stair tread hardware
---|---|---
Title| Airguard Blockage Prevention System Upgrade Instructions| RELEASE
DATE| 2023-01-01
---|---|---|---
STEP| 20. For installations where fans are at the front of the aircart.
Install the brackets (Item 1 & 2) onto Aircart HSS Frame (Item 3) using
supplied hardware. Use 12mm x 30mm (Item 4) and 12mm lock nuts (Item 5) for
top connection. Use 12mm x 110mm-160mm (Item 6, 7 or 8) and 12mm lock nuts
(Item 5) for bottom connection. Bracket is designed to fit HSS Beams 3”-5” x
3”-10” in vertical or horizonal mount positions.| REV #| 1.0
PART KIT #| Varies
PARTS LIST
Item| Part #| Description
1| 7869| Adjustable HSS Backing Plate
2| 7873| Adjustable HSS Bracket Assembly
3| —| Aircart HSS Frame
4| 7861| Hex Bolt, 12mm x 30mm
5| 7669| Lock Nut, 12mm
---|---|---
6| 7862| Hex Bolt, 12mm x 110mm
7| 7863| Hex Bolt, 12mm x 130mm
8| 7864| Hex Bolt, 12mm x 160mm
Title| Airguard Blockage Prevention System Upgrade Instructions| RELEASE
DATE| 2023-03-01
---|---|---|---
STEP| 21. Mount outer vertical channel (Item 1) to Mount Bracket (Item 2)
using supplied 12mm x 80mm Bolts (Item 3) and 12mm lock nuts (Item 4). For
installations where fans are at the front of the Aircart, the vertical channel
(Item 1) can be installed in either direction depending on where there is room
to fit the snorkel kit.| REV #| 1.0
PART KIT #| Varies
PARTS LIST
Item| Part #| Description
1| 7865| Outer Vertical Channel
2| —| Mount Bracket
3| 7859| Hex Bolt, 12mm x 80mm
---|---|---
4| 7669| Lock Nut, 12mm
Title| Airguard Blockage Prevention System Upgrade Instructions| RELEASE
DATE| 2023-03-01
---|---|---|---
STEP| 22. Attach air intakes (Item 1) to upper vertical channel (Item 2)
using supplied 10mm x 25mm Bolts (Item 3) and 10mm lock nuts (Item 4). A
maximum of 4 intakes can be mounted. Use bridge clamp (Item 5) to attach 8”
flex hose (Item 6) to air intake (Item 1).| REV #| 1.0
PART KIT #| Varies
PARTS LIST
Item| Part #| Description
1| 7576| Air Intake Bracket
2| 7868| Upper Vertical Channel
3| 7515| Hex Bolt, 10mm x 25mm
4| 7516| Lock Nut, 10mm
---|---|---
5| 7578| Bridge Clamp, 8”
6| 7572| Flexible Snorkel Hose – 8”
Title| Airguard Blockage Prevention System Upgrade Instructions| RELEASE
DATE| 2023-03-01
---|---|---|---
STEP| 23. Determine desired height of air intakes and secure upper vertical
channel (Item 1) to lower vertical channel (Item 2) at that location. Use
supplied 12mm x 80mm Bolts (Item 3) and 12mm lock nuts (Item 4).| REV #| 1.0
PART KIT #| Varies
PARTS LIST
Item| Part #| Description
1| 7868| Upper Vertical Channel
2| 7865| Lower Vertical Channel
3| 7859| Hex Bolt, 12mm x 80mm
---|---|---
4| 7669| Lock Nut, 12mm
Title| Airguard Blockage Prevention System Upgrade Instructions| RELEASE
DATE| 2023-03-01
---|---|---|---
STEP| 24. For Tow Behind models with fans mounted at the rear. Mount
stabilizer bracket (Item 1) to upper vertical channel (Item 2) using supplied
12mm x 30mm Bolts (Item 3) and 12mm lock nuts (Item 4). Attach stabilizer
bracket (Item 1) to catwalk railing (Item 5) using backing plate (Item 6) and
supplied 12mm x 60mm Bolts (Item 7) and 12mm lock nuts (Item 4).| REV #| 1.0
PART KIT #| Varies
PARTS LIST
Item| Part #| Description
1| 9018| Railing Spacer
2| 7868| Upper Vertical Channel
3| 7861| Hex Bolt, 12mm x 30mm
4| 7669| Lock Nut, 12mm
5| —| Catwalk Railing
---|---|---
6| 7959| Railing Mount Plate
7| 7961| Hex Bolt, 12mm x 60mm
Title| Airguard Blockage Prevention System Upgrade Instructions| RELEASE
DATE| 2023-03-01
---|---|---|---
STEP| 25. Attach 8” flex hose (Item 1) to snorkel housing (Item 2) using
bridge clamp (Item 3). Zip tie 8” flex hoses to reduce wear and ensure tidy
installation.| REV #| 1.0
PART KIT #| Varies
PARTS LIST
Item| Part #| Description
1| 7977| Snorkel Housing
2| 7578| Bridge Clamp, 8”
3| 7572| Flexible Snorkel Hose – 8”
---|---|---
Title| Airguard Blockage Prevention System Upgrade Instructions| RELEASE
DATE| 2023-03-01
---|---|---|---
STEP| Installation is Completed. Ensure all hydraulic connections and bolts
are tightened.| REV #| 1.0
PART KIT #| Varies
PREVENTATIVE MAINTENANCE
- Ensure that the startup procedure on page 16 is performed every morning before seeding begins.
- Take extra precautions when seeding in cold weather.
- It is recommended that a bypass valve is purchased to allow for quicker startup.
TROUBLESHOOTING
| Trouble | Probable Cause | Remedy |
|---|
Fluctuating pressures on pressure gauges and strange noises coming from fan
motor.| High return line pressure| The logic cartridge on the BP System is set
to 750psi. Any value close to or above that will cause fluctuations and issues
with fan speed. Reduce return line pressure to fix this problem.
Faulty quick disconnect couplers| Replace quick disconnect couplers, inspect
ball valve to ensure proper working order
Restriction in return line due to small fitting| Replace fitting with a larger
one
Logic cartridge is contaminated| Clean or replace the logic cartridge as
needed
Fan won’t run| High return line pressure| The logic cartridge on the BP System
is set to 750psi. Any value close to or above that will cause fluctuations and
issues with fan speed. Reduce return line pressure to fix this problem.
Quick couplers are disconnected| Ensure that quick couplers are connected
properly
Logic cartridge is contaminated| Clean or replace the logic cartridge as
needed
Logic cartridge is faulty| Replace the logic cartridge
Hoses are hooked up incorrectly| Consult owner’s manual to see proper
installation of hoses
Cannot get fan speed up to normal levels| Pressure/flow is too low at tractor|
Increase pressure/flow
FREQUENTLY ASKED QUESTIONS
Q: Why can’t I operate my Blockage Prevention System without warming up my
tractor first?
A: Tractor motors and seeding equipment are built to withstand fast startups;
an aluminum radiator is not. On a cold day at 10% oil flow, your return
pressure could be at 500psi on our Blockage Prevention System. If you were to
do a fast startup in cold conditions, you could have a radiator fail.
Pressures could dramatically spike beyond the capacity of our 2400psi-rated
aluminum core.
Q: Will the Blockage Prevention System cause dramatic pressure drops in my
oil flow?
A: While the BPS will cause a slight pressure drop (approximately 400 RPM or
less), the drop in oil flow is negated because of the warm air being
transferred from the oil into the airstream. This allows the internal product
to flow more efficiently. The reason for the slight pressure drop is that the
oil has to pass through the orifices of the radiator, which are smaller than
the hoses used prior to the installation of the Blockage Prevention System.
Q: Does the Blockage Prevention System actually work?
A: We can honestly say that it does. The hotter the oil is in the hydraulic
lines, the more heat the Blockage Prevention System can extract out of that
oil. Since the mechanism is mounted on the face of the fan housing, the fan is
pulling air through the fins of the radiator while the air cart is
pressurizing up to operate. The hot oil, running through the radiator, acts
like a furnace and changes the air temperature on the inside face of the
radiator. That air is then pulled into the air cart stream and is pushed out
towards the openers, where the seed is placed into the furrow. Warmer air
holds more moisture. Humidity will stay in a vapor state when it is drawn in
and will be less likely to turn into a liquid while the air and all the hoses
and internal components are physically warmer. This allows the product to flow
through with less resistance and minimizes buildup of dusty fertilizer
internally. Seed and fertilizer will be delivered to the discharge outlets
without problems.
Q: What is the purpose of the new bypass valve?
A: The new bypass valve upgrade kit allows you to heat up your oil before
engaging your Blockage Prevention System. You can also choose whether or not
to use your BPS in the heat of the day.
Q: What pressure should the pressure gauge read on the Blockage Prevention
System?
A: 300-600psi is an acceptable pressure range when operating. The gauge reads
the pressure of the oil going through the radiator, on the return side of the
fan motor.
Q: Do I need to reset the relief valves on the V2 Blockage Prevention
System?
A: No you do not. The valves are preset to 750psi and 850psi. If they do get
changed or altered, please contact Airguard in order to have them reset.