DG Flugzeugbau DG-1001M Flight Manual page 52

4.5.1.3 Resetting the emergency extension system for normal operation
After an emergency extension the system must be reset for normal
operation. To accomplish this you must pull one of the 2 emergency
extension handles and simultaneously switch the toggle switch down. The
centre (red) and the lower green LED will shine.
Switch and handle must be operated until the centre LED stops shining and
only the lower green LED continues shining. The spindle drive will then
stop operating, then let go handle and switch.
Note: It may occur that the spindle drive stops before the gas strut is completely
reset. Allow the system 5 minutes to cool down and start the resetting process
again.
Thereafter you may retract the landing gear again according to section
4.5.1.1.
4.5.1.4 Part extension and retraction for inspection and servicing
The retraction may be stopped by switching the toggle switch down,
The extension may be stopped by switching the toggle switch up and
pressing simultaneously the press button.
Only the red LED will shine.
For any service work switch off the main switch!
With the procedures described in section 4.5.12.1 you may retract or extend
the landing gear again.
4.5.1.5 Precautionary measures against retracting the landing gear while on
the ground
If the glider is resting on the main landing gear the landing gear should not
be retracted, as retraction will result in damage of the landing gear. To
minimise the risk of such operating error the following safety features have
been incorporated:
1. If the toggle switch is switched up, nothing will happen.
2. If the toggle switch is switched up and the press button is pressed 1
time a warning tone will sound sound (only installed in Ser. No. M1 up
to M4), otherwise, nothing will happen.
3. The landing gear will be retracted only if one of the following
procedures will be used:
a) Hold the toggle switch switched up and press the press button 2
times within 2 seconds.
b) Hold the press button pressed and switch up the toggle switch 2
times within 2 seconds.
Caution: If you leave the DG-1000M unattended switch off the main switch to
prevent any operating error.
Issued: July 2015
Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited
Flight Manual DG-1000M
TN1000/27 EASA app. 4.15