Ammann APR 4920, Translation Of The Original Operating Instructions, Page: 48 / 160

3.1 Description
The APR 4920 / 5920 is a re vers ible vi brat ing plate op er at ing on
the ba sis of the twin-shaft vi bra tion sys tem prin ci ple. The en gine
drives the ex citer on the base plate via a cen trif u gal clutch and a
V-belt.
The ex citer pro duces the vi bra tion re quired for com pac tion as a
re sult of the built-in im bal ance.
The ma chine is guided at the tow-bar grip. It is op er ated with the
op er at ing con trols on the tow-bar.
APR 4920 / 5920 is suit able for all com pac tion work in the fields
of civil en gi neer ing an droad con struc tion.
It can be used to com pact all ground ma te ri als such as sand,
gravel, slag, crushed stone, as phalt and com pos ite sett pav ing.
3.1.1 Over view of com po nents
1 Ba se pla te with ex ci ter
2 En gi ne
3 Tow-bar
4 Ope ra ting con trols / tow-bar
5 Cen tral-point sus pen si on
3.2 Before operation
•
Stand the ma chi ne on an even sur fa ce.
•
Check
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the Engine oil level
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the hydraulic oil level
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the fuel supply
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that screw connections are secure
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condition and function of hydraulic hose lines
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the condition of the Engine and the machine.
•
Top-up any miss ing lu bri ca tion in ac cor dance with the lu bri ca -
tion ta ble
L
M
2
2
0
2
0
0
0
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2
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b
m
G
g
n
u t
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ci
dr
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A
8
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3. Operation
43
Take great care on downslopes. The ma chine
could slip down ow ing to loose ma te rial or if the
sur face is slip pery.
Do not use the ma chine on hard con crete, set as -
phal
tic sur faces, highly frozen or un sta ble sur -
faces.
Use per sonal pro tec tive equip ment (in par tic u lar
hear ing pro tec tors and safety shoes). Risk of loss
of hear ing!
Ob serve the safety con di tions.
Ob serve the op er a tion and main te nance instruc-
tions.
Read the En gine op er at ing in struc tions. Ob serve
the Importants on safety, op er a tion and main te -
nance con tained in them.