October 2020
Installation, Operation and Maintenance Manual
MAN-10-04-100-0711-EN Rev. 0
14
Installation
Section 4: Installation
4.3 Coupling Block
The electric actuator is delivered with drive details and ange in accordance with the
technical characteristics required by the customer, ready to be installed onto the valve.
Only one insert is included in the actuator package delivered to end users.
NOTE
Check the ‘ambient temperature range’ printed on the nameplate, for the correct
utilisation with respect to the ambient temperature. Installation in ambient with
temperature range outside the specied values will invalidate the warranty.
!
WARNING
During normal operation the temperature of the actuator surface can reach 30 °C (86 °F)
above the ambient temperature.
NOTE
In case the screws of the cover, of the terminal compartment and of the OM3 must be
replaced, SS Aisi 316 Class A4 grade 80 screw must be used with minimum yield strength
600 N/mm², The screw size is M6 X 25 mm. Other screws used for the assembly of the other
various parts of the explosionproof enclosure shall be a SS AISI 316 Class A4 Grade 70, with
minimum yield strength of 450 N/mm². Every time the main cover, the terminal compartment
cover and the OM3 are reassembled, make sure to tight all the screws with 5 Nm torque.
NOTE
For the model E171 and 2000 of the Keystone EPI2 Series only: during installation, the
user shall take into consideration that the actuator was assessed at a low risk impact
energy at 2J.
!
WARNING
Never lift the valve/actuator assembly without securing slings to both the valve and the
actuator. Never use the handwheel to lift the actuator.
Figure 6 Overview of one type of insert and drive details of the Keystone EPI2
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