October 2020
Installation, Operation and Maintenance Manual
MAN-10-04-100-0711-EN Rev. 0
40
Maintenance and Troubleshooting
Section 7: Maintenance and Troubleshooting
Section 7: Maintenance and Troubleshooting
7.1 Maintenance
7.1.1
Routine Maintenance
Approximately every 2 years:
Under normal operating conditions, the Keystone EPI2 is maintenance-free: no actuator
maintenance is formally required, even though visual inspection for grease leakage or
external visible damages is recommended every two years. When conditions are severe
(frequent operation or high temperatures), replace all seals that allow grease leakage or
water inlet.
NOTE
Before starting any maintenance operation, make sure that the mains and all other
service voltage connected to the terminal board are switched-off.
The following checks will assure optimum performance:
•
Make sure there are no grease leaks from the actuator housing
•
Check the external parts for possible damage and replace them immediately,
if necessary. In case the window glass is broken, the complete cover must be
replaced (see Chapter 8 for individual item numbers)
•
Repaint all areas where paint is missing. In chemically aggressive or saline
environments, remove rust from surfaces and protect with a rust preventative
•
Check that all nuts and bolts securing the actuator to the valve are tight.
If necessary, re-tighten with a dynamometric key
•
For severe applications or if actuator operation is infrequent,
perform maintenance checks more often
7.1.2
Special Maintenance
In case of actuator failure, please refer to Section ‘Trouble shooting’, Chapter 7.2, for
possible causes. Spare parts can be required from Emerson: please refer to the individual
item number shown in Chapter 8.
In case of malfunction in the mechanical / electronic components, in case of grease leaks
through the seals or in case of scheduled preventive maintenance, the actuator must be
disassembled: any damaged parts can be requested from Emerson with reference to the
attached exploded view drawings and parts lists.
It is essential that for every component to be required from Emerson the serial number of
the actuator together with the item number of the component are indicated in the request.
NOTE
After maintenance work a few operations must be performed to make sure that
movement is regular and there is no grease leakage through the seals.
