© 2017 QuadH2O All Rights Reserved
SARAH2O PRO User Manual
22
III. Checking the motors
1. Check the rotors to confirm that they have not become loose.
2. Detach the propellers and start the motors. Listen carefully. If there is any abnormal noise,
please replace the motors. This may be a sign that the bearings have been worn out.
3. Detach the propellers and start the motors. Carefully examine the edge of the rotor and
confirm that the shaft is perfectly centered on the motor. Check for any abnormal or
excessive vibration. If any problems are detected, contact QUADH2O support to order
replacement motors.
4. Check for deformities by confirming that the gap between the motor and motor base is even.
If not contact QUADH2O Support to order replacement motors.
5. Ensure that the screws used to secure the motor base are tight and the plastic components
around the motors are in good condition. If not please tighten the screws and contact
QUADH2O support to order replacement components.
V. Checking the propellers
1. Check the propellers. If there is any bending, breakage or cracking on a propeller, if
damaged do not use it.
2. Check that the motors are level. See page 7 for more information.
3. Attach the propeller to the motor, turn on the aircraft, and place it on the ground. Stand 1
metre away from the aircraft and observe the rotating propellers. If you can see two distinct
propeller outline layers, when looking at a spinning propeller from the side, this propeller is
damaged and should not be used.
VI. Checking the IMU
1. Open DJI GO app to check the condition of the IMU and perform an advanced IMU
calibration. Place the aircraft in a cool environment and on a flat, stable surface. Do not touch
the craft during the calibration.
VII. Checking the control and video transmission system
1. Check the two antennas on the inside of the aircraft to ensure that they are secure. Also
check for any bending or damage to the cables.
2. Check the antennas of the remote controller for damage.
IX. Checking the dome, gimbal and camera
1. Check the dome for scratches. Light scratches can be removed with automotive polish. If
you are unable to remove the scratches contact QUADH2O support to order a replacement
dome.
2. Check the lens of the camera. If any dirt or residue is detected, gently clean the lens with the
provided cleaning cloth.
