OHAUS Frontier FC5714, Service Manual, Page: 21 / 43

SERVICE MENU 21
Page 21 of 43 SERVICE MANUAL FC5718/R © OHAUS Corporation
all for nothing. If the storage has been successful in the display „rpm/rcf“ the
value of the imbalance sensor and the word „StorE“ are indicated.
2.1.11 Submenu Check and calibration of the imbalance sensor
Here you can check or re-calibrate the imbalance sensor.
• Activate the operation menu as described under „Activation of the operation
menu (Part 1)”.
• Turn the potentiometer, until the special digit „F“ appears in the service
display.
• In the bottom line the real current value is indicated. In case this value is
outside „115“ +/- 1, you have to calibrate it by pressing the key rpm/rcf. As a
result „C 115“ +/- 1 will also be indicated in the top line in case the calibration
has been successful.
Attention : This setup should be done by service personnel only.
• If the word „Error“ appears in the display, the imbalance sensor is defective
and you have to replace the whole rotary encoder board (mounted on the
below side of the motor).
Attention : In case you have to replace the motor or the rotary encoder board
for any reason, a new calibration is required urgently .
Attention : After all points have been reviewed and/or set up, you have to
press shortly the key start to store all parameters. Otherwise the setups were
all for nothing. If the storage has been successful in the display „rpm/rcf“ the
value of the imbalance sensor and the word „StorE“ are indicated.