9.9 EC-fans: Replacing fan package
The vibration limits of the fan for a test conducted at site depend on the selected reference measuring
point. At site, the reference point for outside measurement is in the leg near the fan. Always use the same
measurement point or points.
Table 11: Vibration limits of fan
Condition
Vibration limit [mm/s]
Alarm
7.1...9
Shutdown
9...14
9.9 EC-fans: Replacing fan package
WARNING:
Before starting the service operation, ensure that the electrical supply is reliably
isolated; use the lockout/tag-out system. Always check with a voltmeter that the unit
is electrically isolated and shut off.
WARNING:
EC-fans
: Electrical load (>50 μC) between mains wire and protective earth
connection after switching of the supply when switching multiple devices in parallel.
Electric shock, risk of injury. Ensure that you have sufficient protection against
accidental contact.
Before working on the electrical connection, short the connections to the mains
supply and PE.
EC-fans
: Terminals and connections have voltage even in a unit that is shut off.
Electric shock. Wait for five minutes after disconnecting the voltage at all poles before
opening the device.
WARNING:
EC-fans
: High temperature at the electronics enclosure. Danger of burn injuries.
Ensure that you have sufficient protection against accidental contact.
©
Alfa LU-VE, Rev-04
78
Alfa LU-VE is a trademark registered and owned by LU-VE Group.
Alfa LU-VE reserves the right to change specifications without prior notification.
