LTV 1200 - Measure Turbine Speed (T;S)

p/n 18603-001, Rev. C LTV
®
1200/1150 Ventilator Service Manual Page 6-21
Measure Turbine Speed (T/S)
1) Enter the SERVO menu. Run the ventilator in Servo mode at default settings (flow 10 and
turbine speed 4000) for approximately one minute to stabilize turbine speed.
2) Set up a multimeter to measure frequency. Connect the meter test leads as follows:
• black lead to the meter COM connection
• red lead to the meter VΩ connection.
3) Set the meter selector to Voltage (alternating or DC) and change to a frequency
measurement (Hz).
4) Connect the black meter test lead to chassis ground on the ventilator. Touch the red
meter test lead to PIN 15 of connector J5 on the Motor PCBA as shown below.