SNT ACL2 120, Installation, Operation And Maintenance Manual, Page: 9 / 22

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4.1.2 Standard operating conditions
The actuator must be used in an environment whose conditions comply with the provisions of S
NT
. The
works necessary for obtaining and maintaining that conditions are in charge of the owner and, where
applicable, are in charge of the end user.
The actuator must be installed and used indoor only, in dry area with environmental conditions as specified
below:

Temperature range +0°C ÷ +40°C

Relative atmospheric humidity 5% ÷ 85%

No build up of condensation
THE USE OF THE ACTUATOR IN DIFFERENT CONDITIONS THAN JUST DESCRIBED MUST BE PREVIOUSLY
DECLARED AND AGREED WITH S
NT
, SINCE A SPECIAL EQUIPMENT OF THE PRODUCT MUST BE
PROVIDED.
4.1.3 Thermal limit
The actuator duty cycle permissible Fi [%] is the maximum working time expressed in percentage that the
actuator can perform during the reference time period of 10 minutes, under rated load stated in the
catalogue at ambient temperature 25°C, without risk of internal parts overheating.
𝑭
𝒊
[%] =
𝑀𝑎𝑥 𝑤𝑜𝑟𝑘𝑖𝑛𝑔 𝑡𝑖𝑚𝑒 𝑜𝑣𝑒𝑟 10 𝑚𝑖𝑛
10 𝑚𝑖𝑛
× 100
Linear drive Fi [%]
Acme screw (A
CL2
series) 30
Ball screw (
ACL2 B
series) 100
For the proper operation of acme screw linear actuators (A
C
L
2
series) do never exceed the
permissible duty cycle limit.
4.2 Personnel requirements / Qualifications
This manual must be made available to the personnel in charge of installation, start up and use of the
actuator. It is the responsibility of the machine builder:

use personnel with the necessary qualifications for the installation and commissioning of the
actuator;

periodically check the qualification of the assigned personnel;

check that the personnel in charge are aware of the contents of this manual.
5 STORAGE

Do not store outside.

Storage should be dry and dust-free.

Keep away from any aggressive media.

Protect from UV radiation.

Avoid mechanical vibrations.

Storage temperature: 0 to +50 °C.

Relative atmospheric humidity: max. 95% (no build up of condensation).

To store longer than 6 months, take care of moving the input shafts to prevent damages to
sealings.

Also check that all unpainted steel parts are adequately protected (oiled and /or greased) to
prevent oxidation.