Operation Description; Equipment Overview; Operating Control At The Tow-Bar - Ammann AVP 2220 Mode D'emploi

3. Operation
3.1 Description
The AVP 2220/2620/3020/3520 is a reversible vibrating plate op-
erating on the basis of the twin-shaft vibration system principle.
The engine drives the exciter on the baseplate via a centrifugal
clutch and a V-belt. The exciter produces the vibration required
for compaction as a result of the built-in imbalance.
The machine is guided at the tow-bar grip. It is operated with the
operating controls on the tow-bar.
The AVP 2220/2620/3020/3520 is suitable for all compaction
work in the fields of civil engineering an droad construction.
It can be used to compact all ground materials such as sand,
gravel, slag, crushed stone, asphalt and composite sett paving.
Take great care on downslopes. The machine
could slip down owing to loose material or if the
surface is slippery.
Danger
Do not work on hard concrete or set asphalt sur-
facing.

3.1.1 Equipment overview

1 2
1 Engine
2 Central point suspension
3 Tow-bar
4 Operating control/tow-bar
5 Base plate with exciter
3 4
5

3.2 Operating control at the tow-bar

b
0
a
max
B3299050.cdr
1 Control lever
a forward
b reverse
The control lever serves for adjustment of the unbalances in the
exciter and in turn for coninuous regulation.
–
Forward (I) / point compacting (0) / reverse (II)
–
the speed of the machine
The control lever remains automatically in position only when set
to the maximum forward travel setting (a). In any other position,
the control lever moves in the direction of maximum forward
travel when released.
If the control lever is operated too quickly several times, the shift
lever will block in reverse travel. In this case:
–
Release lever in forward travel position up to maximum for-
ward travel position
–
Blocking is cleared within a few seconds and perfect shifting is
possible
The control lever can be operated only with the engine running.
The lever blocks if operated when the machine is stationary.
Blocking is immediately cleared when the engine is restarted.
2 Engine speed control lever
min Idle (detent position)
max Full load
The motor speed can be adjusted steplessly with the control le-
ver. At minimum motor speed (min), the drive to the exciter is dis-
connected at the centrifugal clutch and the motor idles.
The centrifugal clutch engages when the control lever is moved
approximately ¼ of its adjustment travel.
The motor speed should always be well below or
well above the engaging speed of the centrifugal
clutch, otherwise, the clutch linings will wear very
Attention
quickly or could even be destroyed.
29
1
min
2