Maximum Merlin (pre-2001) - Manual (Page 6)

MERLIN
TROUBLE SHOOTING
(WIND SPEED)
IF THERE IS WIND......
IF THERE IS NO WIND......
Samuel Barnett Boulevard
New Bedford, MA 02745
(508) 995-2200
1
2
3
Disconnect the black and white wires from the back of the of the indicator and connect
them to volt-ohmeter as shown. Set for low range AC Volts.
1
Disconnect the black and white wires from the back of the of the indicator and connect
them to volt-ohmeter as shown. Set the range for Ohms.
If the sensor delivers the above approximate voltages, plus or minus, depending on an
estimate of the wind speed, the fault lies in the indicator. If it does not deliver these
voltages, the fault lies in the sensor or installed wire.
If the sensor is operating properly, you will achieve these approxiamte readings:
8-9 MPH = 0.15 VAC rms
17 MPH = 0.31 VAC rms
51 MPH = 0.97 VAC rms
102 MPH = 2.00 VAC rms
2 If the sensor and wire are good, the ohm meter should indicate between 500 and
1,000 ohms. If there is a good reading on the ohm meter, then the idicator is at fault.
If the reading is wrong, then the sensor or installed wire is at fault.
FROM AC
ADAPTER
FROM ROOF TOP
SENSORS
VOLT-OHMETER
BLACK AND
WHITE WIRES