Great Planes C-55 Brushed ESC - GPMM2055 - Manual (Page 3)

2. Move the throttle stick to full power. The motor will beep 5
times. Wait 5 seconds and the motor will beep 7 times.
3. Move the throttle stick to the brake position. The motor
will beep 3 times. The ESC is now ready to operate.
4. To switch the brake on, repeat the process.
Once the battery type and brake are set, they do not
require resetting once the ESC has been switched off.
ESC OPERATION
1. Switch on the transmitter.
2. Move the throttle stick to the brake position (towards you).
3. Press the on/off button on the ESC and listen for the
3 beeps.
4. Move the throttle stick to full power (away from you)
and listen for the 5 (brake on) or 7 (brake off) beeps
indicating full throttle. Move the throttle stick back to
brake immediately.
5. Move the throttle stick back to the brake position.
6. The ESC is now ready to operate.
7. To switch the ESC off, press the button until the lights
go out.
IMPORTANT: If the speed control does not operate
properly after following the above set-up procedure,
switch the throttle reversing switch on transmitter and
repeat the speed control set-up.
As a safety precaution to prevent the motor from starting
when the ESC is first switched on, you will need to move
the throttle to full and back to brake every time the ESC
is switched on.
Note: Once you have finished flying you must disconnect
the battery. Even though the ESC is switched off it still draws
a slight amount of current and will completely drain the
battery over an extended amount of time.
STEP 6 RANGE TEST
Because electric motors generate electrical noise it is
critical to range test the airplane, with the motor on,
before flying. With the antenna collapsed and a helper
holding the airplane, operate the flight controls while
walking away from the airplane. You should be able to
get approximately 75' to 100' away before losing control
of the airplane. Next, check the range with the motor
running at half throttle. The range should be close to the
range you got with the motor off. If it is not, you may need
to move the receiver, receiver antenna servo leads or
speed control to a different location.
OPTIONAL RECEIVER BATTERY
A separate receiver battery may be needed if high-
power servos are used. With a helper holding the
airplane and the motor running, move all the servos
simultaneously. If the servos slow down or stop, a
separate receiver battery should be used.
Installing A Separate Receiver Battery:
1. Remove the red wire from the ESC receiver plug. To
do this use a small flat bladed screwdriver to raise the
plastic tab holding the metal pin. Carefully pull the red
wire out of the receiver plug and insulate the pin with
heat-shrink tubing or electrical tape.
LIFT PLASTIC TAB
WHITE
RED (+)
BLACK (–)
2. Plug the ESC into the throttle channel on the receiver.
3. Connect a separate receiver battery to a receiver
switch harness and plug this into the battery slot of the
receiver. In most electric planes a 300mAh receiver
battery will work well. If the ESC is used in an electric
sailplane a 600mAh receiver battery is recommended.
4. To operate the receiver, first switch on the switch
harness, then the ESC. Reverse the order to shut the
receiver off.
TROUBLESHOOTING GUIDE
SPEED CONTROL DOES NOT WORK
Problem: Motor and receiver do not work.
1. Make sure motor battery is charged.
2. The plug between the motor battery and ESC may not
be making contact.
3. Check that the ESC plug is correctly plugged into
the receiver.
4. Unplug the ESC from the receiver and plug a receiver
battery into the receiver. Does the radio work now? If it
does, the problem may be the ESC and requires servicing.
Problem: The ESC runs but cannot be controlled.
1. Make sure the ESC is plugged into the correct slot in
the receiver.
2. Check that the transmitter is adjusted properly.
SPEED CONTROL WORKS
(BUT OTHER PROBLEMS EXIST)
Problem: Receiver glitches or stutters while motor
is running.
1. The three motor capacitors are not installed correctly
or have broken.
2. Receiver is mounted too close to the ESC.
3. The receiver antenna is routed too close to the motor
battery, ESC or wires.
4. The motor battery/ESC plugs do not fit tightly.
Problem: Motor slows down after only a few minutes
of running.
1. The prop on the motor may be too large, causing high
current draw and overheating the speed control. The
thermal protection is slowing the motor.
2. The motor may be damaged (bent shaft, tight bearing
or shorted winding) causing high current draw.
3. The ESC may need more cooling air flowing over it.
Problem: Motor runs backwards.
1. The ESC is wired to the motor backwards.
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