5. Maintenance
Page 54 MF0121ACP_uc.docx Manual for Node AM4
Specified Standard Tolerances
Nominal torque
ran
e
Prescriptive
limits
Nominal torque
ran
e
Prescriptive limits
≤ 0.5 N-m ± 0.05 N-m
≤ 6.0 N-m ± 0.60 N-m
≤ 1.0 N-m ± 0.10 N-m
≤ 8.0 N-m ± 0.70 N-m
≤ 1.5 N-m ± 0.15 N-m
≤ 11.0 N-m ± 0.90 N-m
≤ 2.0 N-m ± 0.20 N-m
≤ 20.0 N-m ± 1.50 N-m
≤ 3.0 N-m ± 0.30 N-m
≤ 35.0 N-m ± 2.00 N-m
≤ 4.0 N-m ± 0.40 N-m
≤ 50.0 N-m ± 3.50 N-m
≤ 5.0 N-m ± 0.50 N-m
table 5-4 Specified standard tolerances
Note: Terminate each open RF connector by 50 ohms, to avoid internal oscillation.
Note: Observe that all components have watertight sealings.
After replacement of components all screws have to be fastened tight to
ensure watertightness.
Note: After the replacement of a component, check whether the system has to be
levelled anew.
Note: Do not forget to reinstall the splash water shield and vandalism cover (if this
option is installed) after the replacement procedure to ensure safe operation.
Note: It is recommended to disconnect the Node AM from mains (power-supply
line) before an RF card is mounted or dismounted. In case the Node AM is
not allowed to be disconnected from mains, the RF card which needs to be
replaced must be disabled via software in the Technician page before
removing it. This is to avoid possible damage when inserting the new RF
card.
If any FRU not contained in the following chapter needs to be replaced, please contact
customer service for additional instructions.
To Next Page
Loading...
General