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VZ7 - Variable Speed Zebra
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VZ7 - Variable Speed Zebra

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The VZ-7 is a microprocessor-controlled diagnostic tool that performs sophisticated testing with only 4 switches. With it, a Tech will be able to:
  • Visually monitor signal calls from the furnace/air handler circuit boards.
  • Interrupt those signals and send the motor any signals you desire, to observe motor operation.
  • Get a visual display of motor RPM and the calculated CFM (on most systems).
  • Get a visual readout of all 4 system "taps". These selections help set up a system correctly.
  • Get a direct readout of the control voltage in the motor (low voltage here causes erratic operation).
  • And finally, IF a problem is traced to the motor, one switch press starts an automatic analysis to clearly indicate if the problem is in the motor's electronics, or one of 7 possible winding problems.
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Product ID VZ-7
  ISBN 768467400077
  Updated
03/05/2019
  •    Info
  •    Reviews
  •    Related
Many techs have some confusion about ECM motors and systems - and no wonder - with as many as 21 wires going to these new motors, you can't just use a voltmeter anymore for proper diagnosis.

"The prior generation of tools can help, but fall far short of giving the tech complete information on why a system isn't operating correctly."

The VZ-7 is a microprocessor-controlled diagnostic tool that performs sophisticated testing with only 4 switches. With it, a tech will be able to:
  • Visually monitor signal calls from the furnace/air handler circuit boards.
  • Interrupt those signals and send the motor any signals you desire, to observe motor operation.
  • Get a visual display of motor RPM and the calculated CFM (on most systems).
  • Get a visual readout of all 4 system "taps". These selections help set up a system correctly.
  • Get a direct readout of the control voltage in the motor (low voltage here causes erratic operation).
  • And finally, IF a problem is traced to the motor, one switch press starts an automatic analysis to clearly indicate if the problem is in the motor's electronics, or one of 7 possible winding problems.
GE, who makes a large share of these motors, reports that 41% of the motors returned to their factory actually have "no problem found". That means someone made an expensive misdiagnosis; it also means the real problem has not been corrected by replacing the motor. Almost any mistake in diagnosis on an ECM system will cost the Tech (or his customer) much more than this tool does!

Two DVDs are included; one that teaches Variable Speed System Theory, the second instructs the Tech how to use the VZ-7 to troubleshoot these systems.
  • Microprocessor controlled, but easy-to-use; only 4 switches
  • Rugged case with carry handle and lead storage compartment
  • Full-Color sleeve with point-of-purchase information
  • Quick-reference card bonded to inside lid of case
  • 2 Instructional DVDs included, plus an owner's manual
  • Package Weight: 2.2 lbs each
  • Standard Carton: 4 or 12 pieces
  • One year limited warranty
Click here to learn more about the VZ-7
Click here to download the VZ-7 operation manual
Click here to view and download the VZ-7 product flyer
 
2 Product Reviews - Average rating 5 / 5 (Show All)

Click to review this product

Great tool

- 04/09/2019

Works well

Excellent

- 04/09/2019

Excellent

Click to review this product

X-13 & Evergreen Motor Adapters (with DVD) for VZ-7
X-13 Motor adapter set for VZ-7
. 2-Piece adapter set necessary to connect your VZ-7 to the new X-13 ECM and Evergreen (variable speed) motors by General Electric. Instructions on DVD included.
Condenser ECM Motor Adapters (with DVD) for VZ-7
Condenser unit ECM fan motor adapter set for VZ-7.
3-Piece adapter set necessary to connect your VZ-7 to the new condensing unit ECM (Multi-Speed, Variable Torque) Motors by General Electric. Instructions on DVD included.
Flyer - VZ7 - Variable Speed Zebra
Flyer for Variable Speed Zebra, Full-color flyers that you may imprint with your Distributor information. These flyers are sent at no charge with your order of any other Zebra Products.

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