12
| Troubleshooting/maintenance/repair
Electronics/motor
overheated
Insufficient cooling
Improve cooling.
Overloaded motor
Check if the correct fan is used for your application.
Ambient temperature too high
Check if the correct fan is used for your application.
The motors of the IV...EC have a LED in the opening on the back side that indicates the solution status to help in the fault
diagnostics:
Blinking
periods /
status
Condition
ON time
[sec]
OFF time
[sec]
Wait /
interval time
(off) [sec]
ON
Fan is running
Speed bigger than zero
-
-
OFF
Fan is stopped
Speed equals zero
Warning
The LED in OFF condition doesn`t mean that there
is no power supply to the drive.
Observe 2.3
-
-
2
Under voltage
0.1
0.1
-
3
Overload / over current
0.25
0.25
2
6
Overvoltage
0.25
0.25
2
9
Communication timeout
Failure in the drive to motor communication.
0.25
0.25
2
10
Watchdog timeout
Failure in the drive processor (Software)
0.25
0.25
2
11
Locked rotor
0.25
0.25
2
Note:
For all other damage/defects, please contact Systemair. Defective safety-relevant fans (for Ex and smoke
extraction applications) must be replaced completely.
Maintenance
Warranty claims can only be made if maintenance work is carried out correctly and written evidence thereof is
provided.
We recommend regular maintenance intervals to ensure continuous fan operation. These maintenance intervals are
specified in the “Activities” table below. In addition, the operator must carry out follow-up activities such as cleaning,
replacing defective components or other corrective measures. For traceability reasons, a maintenance plan must be
created which documents the work carried out. This must be created by the operator. If the operating conditions are
"extreme", the maintenance intervals must be reduced so that maintenance is carried out more frequently. Examples
of extreme operating conditions:
• Fan unit in rare use (less than once a month)
• Fan used for emergency operation
• Durable ambient temperature > 40 ºC or < -10 ºC
218839 | 002
Summary of Contents for 218463
Page 4: ......
