Bucher iValve i250 - Hand Pump and Emergency Lowering

iValve Lift Control Valve 5 Operating controls and indicators
13/31
300-I-9010544-EN-01/10.2014
5.2 Hand pump / Emergency lowering
iValve i250
The iValve comes with a combination of hand pump and emergency
lowering valve as standard.The car can be moved upward with the hand
pump when needed, and downward by means of the emergency-lower
ing facility.
Operating the hand pump
Caution
1
1. Push the extension pipe onto the lever stub of the hand pump as
far as it will go, then retract by approx. 3cm
2. Swing the hand pump lever up and down
DANGER!
Car descent
Can lead to death or serious injuries.
Before operating the emergency-lowering valve, make sure that
there are no people or materials in the lift shaft.
Operating the emergency lowering
Caution
90°
1
2
3007019379
3
1. Push the extension pipe onto the lever stub of the hand pump as
far as it will go, then retract by approx. 3cm
2. Push the hand pump lever down
Temporary deactivation of piston slack rope safety device
(preload pressure)
In order to prevent slack-rope build up as per EN81-2 number 12.9.1.5
operation of the emergency lowering valve will leave a preload pressure
of 6bar.
In order to temporarily deactivate the preload pressure:
3. Turn the slack rope safety device (1) by 90°clockwise. See pictures
4. Push the hand pump lever down (with extension pipe) until the
pressure is completely relieved
5. Turn the slack rope safety device (1) by 90°anticlockwise to the
original position
Issue: 09.2015
13/31
Reference: 300-I-9010544-EN-01