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TECO 302 Serie Manual De Instrucciones página 128

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If there is no power or the control box is damaged, lower the lift manually to its initial
position as follows:
1
After manual lowering of the lift, reset ordinary operating conditions.
Lift cannot be lifted if manual lowering valve is opened.
8.6.2 Emergency manual descent lift WITH MECHANICAL SAFETY DEVICES
If the lift is arrested in alarm state, as indicated by the white lamp, use the following
procedure to manoeuvre the lift:
• Press and hold the safety lock button. The mechanical safety devices lift and the board
emits a continuous beeping sound.
• Press the 'up' button to release the safety devices.
• Press the 'down' button to lower the lift.
• The control deactivates after 3 seconds, after which the procedure must be repeated
to continue and complete lowering the lift.
8.6.2.1 Emergency manual descent WITH MECHANICAL SAFETY DEVICES
In the event of lost power or control unit failure, use the following procedure to manually
lower the lift into the initial position:
• disconnect the machine from mains electricity and ensure that the main switch is turned to
"0";
• operate the manual pump PM to raise the lift sufficiently to disengage the mechanical
safety device
• turn screw A of solenoid valve YVA clockwise (or turn the screw to position 1) to lift the
128
8.6 manual and emergency lowering
8.6.1 Emergency manual descent Lift
WITHOUT MECHANICAL SAFETY DEVICES
2
Disconnect electrical power and make
sure the main switch is in "0" position;
Inside the control box, on the hydraulic
group, unscrew the knurled nuts (1)
and simultaneously anticlockwise (2);
Reset initial operating conditions to
lift platform.
26
Operator's m anual

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