1884 Eastman Ave.,
Bldg. 112
Ventura, California
93003 USA
t: 805 654-7000
f: 805 654-7064
Power Connections
1. How do I connect line power to the Variable Frequency Drive?
2. How do I connect power to the motors?
3. What are the cable specifications?
4. How long can the cable lengths be between the Blower and Variable Frequency Drive?
Operation
5. What is the proper impeller rotation direction?
6. How do I change blower speed?
7. How can I view kW consumption?
8. What is the security code for the Variable Frequency Drive?
9. What is the red light on Variable Frequency Drive?
10. How do I clear a Variable Frequency Drive fault?
11. What is a Hardware Overload Variable Frequency Drive Fault?
Filters
12. How do I change filters?
13. When do I change filters?
Air Components
14. What is the best way to orient an Air Knife?
15. What is the best way to orient a JetBlast™ Nozzle System?
Smart Control
16. How can I add a manual on-off switch?
17. How do I add control sensors?
1. How do I connect line power to the Variable Frequency Drive?
Only use a qualified electrician and follow all applicable electrical codes. Refer to the drive nameplate for correct power supply requirements and refer to the included Adjustable Frequency AC Drive User Manual. The Adjustable Frequency AC Drive User Manual and worldwide electrical certifications are also available online at: http://www.ab.com/drives/ powerflex/70/index.html or at http://mms.rockwellautomation.com/idc/groups/literature/
documents/um/20a-um001_-en-p.pdf.
See Adjustable Frequency AC Drive User Manual for complete list of considerations when
wiring your Adjustable Frequency AC drive.
JetAir Factory Enclosed Systems must be connected to an incoming power supply. Incoming wire is designed to be brought through a side wall of the enclosure. Use only a qualified electrician to pierce the enclosure wall and to bring incoming power to the terminal block located in the enclosure.
2. How do I connect power to the motors?
The JET-2™ motor is a special ‘high-speed’ motor that is matched specifically to the JetAir supplied Adjustable Frequency AC Drive (i.e., frequency inverter or variable frequency drive) shipped with the motor. The motor must always be powered and controlled by the JetAir supplied Adjustable Frequency AC Drive. Use of any other AC Drive, other than the one supplied with the motor, voids the blower warranty.
DO NOT, under any circumstance, bypass the AC Drive and connect the JET-2™ high speed motor directly to line power. This will void the warranty and will destroy the motor.
Use a qualified electrician only. Refer to the drive nameplate for correct power supply requirements and refer to the included Adjustable Frequency AC Drive User Manual. The Adjustable Frequency AC Drive User Manual and worldwide electrical certifications are also available online at: www.ab.com/drives/powerflex/70/index.html.
The Adjustable Frequency AC Drive User Manual addresses wiring requirements. Always use a qualified electrician and follow all applicable electrical codes.
Connect customer supplied AC Drive grade cable (see www.ab.com/drives/powerflex/70/index.html), 10AWG or greater, between the Adjustable Frequency AC Drive and JetAir Blower Motor as indicated in the diagram below. Motor lead length between AC Drive and motor not to exceed 40’. Consult the Allen Bradley ‘PowerFlex Adjustable Frequency AC Drive User Manual’ included with the drive or look online for specific information about motor lead lengths, device protection, grounding, and general wiring recommendations.
JetAir Motor Junction Box
Adjustable Frequency AC Drive Terminals T1, T2 and T3.
Note: U1 is wired to T2 and V1 is wired to T1 in order to achieve proper counter clockwise impeller rotation. However, motor (impeller) rotation must be visually verified for proper installation.
3. What are the cable specifications?
AC Drive grade cable (see www.ab.com/drives/powerflex/70/index.html), 10AWG or greater. However, always use and consult a qualified electrician and follow all applicable electrical codes.
4. How long can the cable lengths be between the Blower and Variable Frequency Drive?
Cable lengths be between the Blower and Variable Frequency Drive should be no longer than forty feet for locations with 460-480VAC Power. Contact JetAir Technologies for installations requiring longer distances between Adjustable Frequency AC Drives and Motors.
5. What is the proper impeller rotation direction?
The blower should be rotating counter clockwise while looking from the impeller side of the blower. Correct motor rotation will provide optimum performance. However, substantial flow and pressure will still be achieved when running backwards despite significant efficiency loss.
Backwards impeller rotation will also cause damaging vibration on high-speed motor. Backwards running of blower will invalidate warranty.
If impeller rotation is clockwise (incorrect), then change to counter clockwise (correct) by switching input power leads from the Adjustable Frequency AC Drive to the motor on terminals V1 and W1 in the motor junction box. Note: switching incoming (i.e., line) power leads to the Drive does not affect motor rotation.
JetAir Motor Junction Box
6. How do I change blower speed?
JetAir Technologies Factory Programs and Tests your blower prior to shipment. To change the speed of the blower, you will need an Adjustable Frequency AC Drive Controller often called a Human Interface Module (HIM). HIMs insert into the front face plate of your Adjustable Frequency AC Drive. A HIM has an LCD screen and a digital keypad that will enable you to program its operation.
With the system on, you should see the LCD illuminated.
7. How can I view kW consumption?
To view kW consumption, you will need an Adjustable Frequency AC Drive Controller often
called a Human Interface Module (HIM). HIMs insert into the front face plate of your Adjustable Frequency AC Drive. A HIM has an LCD screen and a digital keypad that will enable you to program its operation.
With the system on, you should see the LCD illuminated.
8. What is the security code for the Variable Frequency Drive?
We recommend that you contact JetAir Technologies before you change and factory presettings.
The security code for the Variable Frequency Drive is “ 1 8 8 4 .”
9. What is the red light on Variable Frequency Drive?
The red light indicates a FAULT Condition with the drive. To clear fault, press 
or Cycle Power.
10. How do I clear a Variable Frequency Drive fault?
To clear fault, press or Cycle Power.
11. What is a Hardware Overload Variable Frequency Drive Fault?
The Adjustable Frequency AC Drive is programmed to protect itself and the motor in the event there is an excessive amperage draw by the motor. This can be caused by a Motor Failure, an Impeller Crash or a Drive Failure. It can also be caused by overspeeding the blower. Overspeeding can occur when the drive is set to run above its output capability or if it is run wide open without hoses and air components attached.
If the motor and drive appear to be running, check hose connections and/or lower speed. Don’t forget to clear the fault by pressing or cycling power, before re-starting system.
12. How do I change filters?
Improper filtration or operating the blower without a filter will void the warranty. Cylinder
Filters and Panel Filters are available for all JetAir Blowers and Enclosure Systems for normal
operating environments and HEPA applications.
Warning: Do not operate blower without filter in place or filter lid unattached!
Cylinder Filter Installation Procedure:
- Seat circular aluminum inlet adapter into the intake of the volute housing with the two holes in the adapter lined up at 12 and 6 o’clock over the threaded bosses in the housing. The adapter will fit loosely, this is by design.
- Pass the short threaded end of one of two threaded rods through the 12 o’clock hole in
the inlet adapter and thread into volute housing boss. Finger tighten the rod. - Pass the short threaded end of the second rod through the 6 o’clock hole in the inlet
adapter and thread into volute housing boss. Finger tighten the rod. - Re-Seat the aluminum inlet adapter into volute housing by gently pushing the adapter
until it lands square on the volute intake. - Tighten both rods further by using vice-grips, turning each rod another ¼ turn to the
right. - Place the polyester or paper cylinder filter over rods and slide the filter down the rods
until it lands gently against the volute housing. Note that the filter element itself does not have a ‘top’ or ‘bottom’ and may go on from either end. - Align the top hole (so the JetAir Sticker is upright position) of the filter cover over 12
o’clock rod and push filter cover gently against the filter. - Align the bottom hole in the filter cover over the 6 o’clock rod and push filter cover
against the filter. The rod may be maneuvered by hand in order to line the rod up with the hole in the cover. - Thread the filter cover retaining knobs over the top and bottom ends of the threaded
rods and tighten until the filter cover and filter fit snugly against the volute housing. Do not over tighten as this will deform the filter cover.
Panel Filter Installation Procedure for Enclosure:
- Open the door of the blower enclosure and slide filter into position along guide rails near
the top of the enclosure. Note air flow direction arrow on the side of the panel air filter.
Correct air flow is from the top of the enclosure down into the blower compartment. - Make sure the access door is closed and securely fastened.
- Change filters when the Filter Change Gage indicator needle moves from green to red,
indicating a plugged filter. - Inspect enclosure at blower outtake and make sure outtake gasket is in place between
the enclosure wall and blower outtake. This seal assures no air will bypass the filter into the blower compartment.
Do not operate blower with access door open or unattached. Inspect enclosure for any
loose items. Do not store any items in enclosure.
13. When do I change filters?
Under normal conditions, filters should be replaced when Filter Change Gage indicates “red”
instead of “green.” In addition and if you are not using a JetAir Filter Change Gage, JetAir
recommends visual inspections every two months.
A Filter should be changed any time a filter has a visible hole through its body.
Filters with excessive particle loading should be replaced immediately. It is possible your
site has particles in the air that are smaller than the pore size of the filter. This will be
become evident if the filter appears heavily loaded or discolored and the filter gage still
reads “green.” We reccomend changing the filter immediately if this is seen.
14. What is the best way to orient an Air Knife?
Air Knives tend to be most effective when rotated 15º below the horizontal plane (as
shown). Further the highest point of the Air Knife Gap should be the first point of contact to meet the highest point on your part or container (as shown).
15. What is the best way to orient a JetBlast™ Nozzle System?
When using the JetBlast™ like an Air Knife, orient it similarly but 1.5-2.5” from the container. When using the JetBlast™ for part or can end drying the JetBlast™ should (typically) be mounted closer to the part or item to be blown-off.
16. How can I add a manual on-off switch?
On the Terminal Block of the Adjustable Frequency AC Drive there is a jumper wire (20AWG)
between Adjustable Frequency AC Drive Terminals #2 and #7. Place your AllenBradley
switch “between” these terminals.
17. How do I add control sensors?
See above, #15, or contact JetAir Technologies or contact AllenBradley. We have experiences with a variety of sensors that take advantage of Adjustable Frequency AC Drive’s digital i/o and 0-20mA analog i/o.