O P E R AT I O N
Page 29
Company operating instructions
In the case of particularly difficult lifting equipment
applications, the company must provide comprehensible
operating instructions in the language of the operator,
within the framework of this operation manual. Here,
measures for safe operation are stipulated in accordance
with the operating conditions.
Furthermore, it is essential that all the regulations set
out in sections
Intended use
and
Operating conditions,
page 14, are observed.
JDN Air Hoists can be equipped with various control
devices. All are suitable for use in explosion-hazardous
areas.
All control switches return to the zero position when
released.
C O N T RO L VA LV E O N M O T O R
Air control (E-, F-, FI-control) with MS
Control valve with upstream main-stream valve
The control valve consists of:
1. Main-stream valve
2. Direction control valve as rotary valve
3. Positioner (pneumatic actuation)
The main-stream valve lies upstream from the rotary
valve. If no control pressure is present, this valve is
closed and the rotary valve is depressurised. If control
pressure is applied from the hand control, the valve
opens and releases the main stream.
If the red EMERGENCY STOP button on the hand control
is pressed, all control lines are depressurised and the
main-stream valve is closed.
The rotary valve positioner is mechanically connected to
the rotary valve drive.
The positioner is actuated by the control air.
Air control (E-, F-, FI-control)
Control valve without upstream main-stream valve
The control valve consists of:
1. Direction control valve as rotary valve
2. Positioner (pneumatic actuation)
The rotary valve positioner is mechanically connected
to the rotary valve drive.
The positioner is actuated by the control air.
Rope control
Control valve without upstream main-stream valve
The control valve consists of:
1. Direction control valve as rotary valve
2. Positioner
The rotary valve positioner is mechanically connected
to the rotary valve drive.
For the purpose of actuation, the rotary valve is
connected directly to the control lever.
E - C O N T RO L
With E-control, lifting and lowering movements can be
controlled via two pushbuttons. The direction of move-
ment of the load hook is marked on the upper side of
the valve housing, above the pushbuttons.
Lift: Press the right pushbutton.
Lower: Press the left pushbutton.
E-control with EMERGENCY STOP button
C O N T R O L S
